Annotation of html5/spec/syntax.html, revision 1.779
1.2 mike 1: <!DOCTYPE HTML>
1.755 mike 2: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie"><head><title>8 The HTML syntax — HTML 5</title><style type="text/css">
1.1 mike 3: pre { margin-left: 2em; white-space: pre-wrap; }
4: h2 { margin: 3em 0 1em 0; }
5: h3 { margin: 2.5em 0 1em 0; }
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17: dd dl + p { margin-top: 1em; }
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21: dt dfn { font-style: italic; }
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23: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
24: pre em { font-weight: bolder; font-style: normal; }
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26: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
27: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
28: table thead { border-bottom: solid; }
29: table tbody th:first-child { border-left: solid; }
1.475 mike 30: table tbody th { text-align: left; }
1.1 mike 31: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
32: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
33:
34: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
35: .matrix, .matrix td { border: none; text-align: right; }
36: .matrix { margin-left: 2em; }
37: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
38: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
39: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
40:
41: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
42: img.extra { float: right; }
43: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; }
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45: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
46: pre.css:first-line { color: #AAAA50; }
47: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #EEFFEE; }
48: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
49: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
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52: dl.switch { padding-left: 2em; }
53: dl.switch > dt { text-indent: -1.5em; }
54: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
55: dl.triple { padding: 0 0 0 1em; }
56: dl.triple dt, dl.triple dd { margin: 0; display: inline }
57: dl.triple dt:after { content: ':'; }
58: dl.triple dd:after { content: '\A'; white-space: pre; }
59: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
60: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
61: a .diff-new { border-bottom: 1px blue solid; }
62:
63: h2 { page-break-before: always; }
64: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
65: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
66:
67: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]), li > span:not([title=""]):not([class="XXX"]):not([class="impl"]) { border-bottom: solid #9999CC; }
68:
69: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
70: div.head p { margin: 0; }
71: div.head h1 { margin: 0; }
72: div.head .logo { float: right; margin: 0 1em; }
73: div.head .logo img { border: none } /* remove border from top image */
74: div.head dl { margin: 1em 0; }
1.671 mike 75: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
1.1 mike 76:
77: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
78: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
79: body > .toc > li > * { margin-bottom: 0.5em; }
80: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
81: .toc, .toc li { list-style: none; }
82:
83: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
84: .brief li { margin: 0; padding: 0; }
85: .brief li p { margin: 0; padding: 0; }
86:
87: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
88: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
89: .category-list li { display: inline; }
90: .category-list li:not(:last-child)::after { content: ', '; }
91: .category-list li > span, .category-list li > a { text-transform: lowercase; }
92: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
93:
94: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
95: .XXX > :first-child { margin-top: 0; }
96: p .XXX { line-height: 3em; }
1.159 mike 97: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
98: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
99: .annotation :link, .annotation :visited { color: inherit; }
100: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
101: .annotation span { border: none ! important; }
1.1 mike 102: .note { color: green; background: transparent; font-family: sans-serif; }
103: .warning { color: red; background: transparent; }
104: .note, .warning { font-weight: bolder; font-style: italic; }
105: p.note, div.note { padding: 0.5em 2em; }
106: span.note { padding: 0 2em; }
107: .note p:first-child, .warning p:first-child { margin-top: 0; }
108: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
109: .warning:before { font-style: normal; }
110: p.note:before { content: 'Note: '; }
111: p.warning:before { content: '\26A0 Warning! '; }
112:
113: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
114: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
115: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
116:
117: h4 { position: relative; z-index: 3; }
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119: .element {
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136: content: ' ';
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140: }
141:
1.149 mike 142: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
143: td > .example:only-child { margin: 0 0 0 0.1em; }
1.1 mike 144:
145: .tall-and-narrow {
146: font-size: 0.6em;
147: column-width: 25em;
148: column-gap: 1em;
149: -moz-column-width: 25em;
150: -moz-column-gap: 1em;
151: -webkit-column-width: 25em;
152: -webkit-column-gap: 1em;
153: }
154:
155: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
156: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
157: ul.domTree li li { list-style: none; }
158: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
159: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
160: ul.domTree span { font-style: italic; font-family: serif; }
161: ul.domTree .t1 code { color: purple; font-weight: bold; }
162: ul.domTree .t2 { font-style: normal; font-family: monospace; }
163: ul.domTree .t2 .name { color: black; font-weight: bold; }
164: ul.domTree .t2 .value { color: blue; font-weight: normal; }
165: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
166: ul.domTree .t7 code, .domTree .t8 code { color: green; }
167: ul.domTree .t10 code { color: teal; }
168:
1.736 mike 169: body.dfnEnabled dfn { cursor: pointer; }
170: .dfnPanel {
171: display: inline;
172: position: absolute;
173: z-index: 10;
174: height: auto;
175: width: auto;
176: padding: 0.5em 0.75em;
177: font: small sans-serif, Droid Sans Fallback;
178: background: #DDDDDD;
179: color: black;
180: border: outset 0.2em;
181: }
182: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
183: .dfnPanel :link, .dfnPanel :visited { color: black; }
184: .dfnPanel p { font-weight: bolder; }
185: .dfnPanel * + p { margin-top: 0.25em; }
186: .dfnPanel li { list-style-position: inside; }
187:
1.671 mike 188: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
189: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
190: #configUI p label { display: block; }
191: #configUI #updateUI, #configUI .loginUI { text-align: center; }
192: #configUI input[type=button] { display: block; margin: auto; }
1.267 mike 193: </style><style type="text/css">
194:
1.292 mike 195: .applies thead th > * { display: block; }
196: .applies thead code { display: block; }
197: .applies tbody th { whitespace: nowrap; }
198: .applies td { text-align: center; }
199: .applies .yes { background: yellow; }
200:
1.267 mike 201: .matrix, .matrix td { border: none; text-align: right; }
202: .matrix { margin-left: 2em; }
203:
204: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
205: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
206: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
207:
208: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
209: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
210: #table-example-1 caption { padding-bottom: 0.5em; }
211: #table-example-1 thead, #table-example-1 tbody { border: none; }
212: #table-example-1 th, #table-example-1 td { border: solid thin; }
213: #table-example-1 th { font-weight: normal; }
214: #table-example-1 td { border-style: none solid; vertical-align: top; }
215: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
216: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
217: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
218: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
219: #table-example-1 tbody td:first-child::after { content: leader(". "); }
220: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
221: #table-example-1 tbody td:first-child + td { width: 10em; }
222: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
223: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
224:
225: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
226: .apple-table-examples * { font-family: "Times", serif; }
227: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
228: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
229: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
230: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
231: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
232: .apple-table-examples td { text-align: right; vertical-align: top; }
233: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
234: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
235: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
236: .apple-table-examples sup { line-height: 0; }
237:
1.724 mike 238: .details-example img { vertical-align: top; }
239:
240: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
1.671 mike 241: function getCookie(name) {
242: var params = location.search.substr(1).split("&");
243: for (var index = 0; index < params.length; index++) {
244: if (params[index] == name)
245: return "1";
246: var data = params[index].split("=");
247: if (data[0] == name)
248: return unescape(data[1]);
249: }
250: var cookies = document.cookie.split("; ");
251: for (var index = 0; index < cookies.length; index++) {
252: var data = cookies[index].split("=");
253: if (data[0] == name)
254: return unescape(data[1]);
255: }
256: return null;
257: }
258: function load(script) {
259: var e = document.createElement('script');
260: e.setAttribute('src', 'http://www.whatwg.org/specs/web-apps/current-work/' + script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
261: document.body.appendChild(e);
262: }
263: function init() {
264: if (location.search == '?slow-browser')
265: return;
266: var configUI = document.createElement('div');
267: configUI.id = 'configUI';
268: document.body.appendChild(configUI);
269: // load('reviewer.js'); // would need cross-site XHR
270: if (document.getElementById('head'))
271: load('toc.js');
272: load('styler.js');
273: // load('updater.js'); // would need cross-site XHR
1.724 mike 274: load('dfn.js'); // doesn't support split-out specs, but, oh well.
1.671 mike 275: // load('status.js'); // would need cross-site XHR
276: if (getCookie('profile') == '1')
277: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
278: fixBrokenLink();
279: }
280: </script><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css">
1.2 mike 281: <script src="link-fixup.js"></script>
1.755 mike 282: <link href="editing.html" title="7 User interaction" rel="prev">
1.2 mike 283: <link href="spec.html#contents" title="Table of contents" rel="index">
1.755 mike 284: <link href="named-character-references.html" title="8.5 Named character references" rel="next">
1.671 mike 285: </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
1.1 mike 286: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
1.183 mike 287: <h1>HTML5</h1>
1.1 mike 288: <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2>
1.642 mike 289:
1.123 mike 290: </div><nav>
1.755 mike 291: <a href="editing.html">← 7 User interaction</a> –
1.2 mike 292: <a href="spec.html#contents">Table of contents</a> –
1.755 mike 293: <a href="named-character-references.html">8.5 Named character references →</a>
1.779 ! mike 294: </nav><p>This is revision 1.3757.</p>
1.659 mike 295:
1.1 mike 296:
1.755 mike 297: <h2 id="syntax"><span class="secno">8 </span><dfn>The HTML syntax</dfn></h2><p class="note">This section only describes the rules for resources
1.725 mike 298: labeled with an <a href="infrastructure.html#html-mime-type">HTML MIME type</a>. Rules for XML resources
299: are discussed in the section below entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
1.755 mike 300: syntax</a>".</p><h3 id="writing"><span class="secno">8.1 </span>Writing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><div class="impl">
1.1 mike 301:
302: <p><i>This section only applies to documents, authoring tools, and
303: markup generators. In particular, it does not apply to conformance
304: checkers; conformance checkers must use the requirements given in
305: the next section ("parsing HTML documents").</i></p>
306:
1.123 mike 307: </div><p>Documents must consist of the following parts, in the given
308: order:</p><ol><li>Optionally, a single U+FEFF BYTE ORDER MARK (BOM) character.</li>
1.1 mike 309:
310: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
311: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
312:
313: <li>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a>.
314:
315: </li><li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
316: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
317:
1.159 mike 318: <li>The root element, in the form of an <code><a href="semantics.html#the-html-element-0">html</a></code> <a href="#syntax-elements" title="syntax-elements">element</a>.</li>
1.1 mike 319:
320: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
321: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
322:
323: </ol><p>The various types of content mentioned above are described in the
1.123 mike 324: next few sections.</p><p>In addition, there are some restrictions on how <a href="semantics.html#character-encoding-declaration" title="character encoding declaration">character encoding
1.1 mike 325: declarations</a> are to be serialized, as discussed in the
1.123 mike 326: section on that topic.</p><div class="note">
1.1 mike 327:
1.159 mike 328: <p>Space characters before the root <code><a href="semantics.html#the-html-element-0">html</a></code> element, and
329: space characters at the start of the <code><a href="semantics.html#the-html-element-0">html</a></code> element and
330: before the <code><a href="semantics.html#the-head-element-0">head</a></code> element, will be dropped when the
1.1 mike 331: document is parsed; space characters <em>after</em> the root
1.159 mike 332: <code><a href="semantics.html#the-html-element-0">html</a></code> element will be parsed as if they were at the end
333: of the <code><a href="semantics.html#the-body-element-0">body</a></code> element. Thus, space characters around the
1.1 mike 334: root element do not round-trip.</p>
335:
336: <p>It is suggested that newlines be inserted after the DOCTYPE,
337: after any comments that are before the root element, after the
1.159 mike 338: <code><a href="semantics.html#the-html-element-0">html</a></code> element's start tag (if it is not <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>), and after any comments
339: that are inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element but before the
340: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 341:
1.123 mike 342: </div><p>Many strings in the HTML syntax (e.g. the names of elements and
1.1 mike 343: their attributes) are case-insensitive, but only for characters in
1.547 mike 344: the ranges U+0041 to U+005A (LATIN CAPITAL LETTER A to LATIN CAPITAL
345: LETTER Z) and U+0061 to U+007A (LATIN SMALL LETTER A to LATIN SMALL
1.1 mike 346: LETTER Z). For convenience, in this section this is just referred to
1.755 mike 347: as "case-insensitive".</p><h4 id="the-doctype"><span class="secno">8.1.1 </span>The DOCTYPE</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments. </i><span><a href="http://www.w3.org/html/wg/tracker/issues/4">ISSUE-4</a> (html-versioning) blocks progress to Last Call</span></p><p>A <dfn id="syntax-doctype" title="syntax-doctype">DOCTYPE</dfn> is a mostly useless,
1.123 mike 348: but required, header.</p><p class="note">DOCTYPEs are required for legacy reasons. When
1.1 mike 349: omitted, browsers tend to use a different rendering mode that is
350: incompatible with some specifications. Including the DOCTYPE in a
351: document ensures that the browser makes a best-effort attempt at
1.123 mike 352: following the relevant specifications.</p><p>A DOCTYPE must consist of the following characters, in this
1.588 mike 353: order:</p><ol class="brief"><li>A U+003C LESS-THAN SIGN character (<).</li>
354: <li>A U+0021 EXCLAMATION MARK character (!).</li>
1.1 mike 355: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">DOCTYPE</code>".</li>
356: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
357: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">HTML</code>".</li>
358: <li>Optionally, a <a href="#doctype-legacy-string">DOCTYPE legacy string</a> (defined below).</li>
359: <li>Zero or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.588 mike 360: <li>A U+003E GREATER-THAN SIGN character (>).</li>
1.1 mike 361: </ol><p class="note">In other words, <code><!DOCTYPE HTML></code>,
1.123 mike 362: case-insensitively.</p><p>For the purposes of HTML generators that cannot output HTML
1.1 mike 363: markup with the short DOCTYPE "<code title=""><!DOCTYPE
364: HTML></code>", a <dfn id="doctype-legacy-string">DOCTYPE legacy string</dfn> may be inserted
365: into the DOCTYPE (in the position defined above). This string must
1.123 mike 366: consist of:</p><ol class="brief"><li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 367: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">SYSTEM</code>".</li>
1.444 mike 368: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 369: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>quote mark</i>).</li>
1.465 mike 370: <li>The literal string "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>".</li>
1.1 mike 371: <li>A matching U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (i.e. the same character as in the earlier step marked <i>quote mark</i>).</li>
372: </ol><p class="note">In other words, <code><!DOCTYPE HTML SYSTEM
373: "about:legacy-compat"></code> or <code><!DOCTYPE HTML SYSTEM
374: 'about:legacy-compat'></code>, case-insensitively except for the bit
1.724 mike 375: in single or double quotes.</p><p>The <a href="#doctype-legacy-string">DOCTYPE legacy string</a> should not be used unless
1.1 mike 376: the document is generated from a system that cannot output the
1.755 mike 377: shorter string.</p><h4 id="elements-0"><span class="secno">8.1.2 </span>Elements</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>There are five different kinds of <dfn id="syntax-elements" title="syntax-elements">elements</dfn>: <a href="#void-elements">void elements</a>,
1.373 mike 378: <a href="#raw-text-elements">raw text elements</a>, <a href="#rcdata-elements">RCDATA elements</a>,
379: <a href="#foreign-elements">foreign elements</a>, and <a href="#normal-elements">normal elements</a>.</p><dl><dt><dfn id="void-elements">Void elements</dfn></dt>
1.1 mike 380:
381: <dd><code><a href="the-canvas-element.html#the-area-element">area</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>,
1.159 mike 382: <code><a href="tabular-data.html#the-col-element">col</a></code>, <code><a href="interactive-elements.html#the-command">command</a></code>, <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>,
383: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>,
1.1 mike 384: <code><a href="forms.html#the-keygen-element">keygen</a></code>, <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>,
1.159 mike 385: <code><a href="text-level-semantics.html#the-param-element">param</a></code>, <code><a href="video.html#the-source-element">source</a></code></dd>
1.1 mike 386:
1.373 mike 387: <dt><dfn id="raw-text-elements">Raw text elements</dfn></dt>
1.1 mike 388:
389: <dd><code><a href="semantics.html#script">script</a></code>, <code><a href="semantics.html#the-style-element">style</a></code></dd> <!-- iframe and
1.91 mike 390: noscript don't count as raw text for syntax purposes -->
1.1 mike 391:
1.373 mike 392: <dt><dfn id="rcdata-elements">RCDATA elements</dfn></dt>
1.1 mike 393:
1.159 mike 394: <dd><code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="semantics.html#the-title-element-0">title</a></code></dd>
1.1 mike 395:
1.373 mike 396: <dt><dfn id="foreign-elements">Foreign elements</dfn></dt>
1.1 mike 397:
1.724 mike 398: <dd>Elements from the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>
399: and the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dd>
1.1 mike 400:
1.373 mike 401: <dt><dfn id="normal-elements">Normal elements</dfn></dt>
1.1 mike 402:
403: <dd>All other allowed <a href="infrastructure.html#html-elements">HTML elements</a> are normal
404: elements.</dd>
405:
406: </dl><p><dfn id="syntax-tags" title="syntax-tags">Tags</dfn> are used to delimit the start
1.373 mike 407: and end of elements in the markup. <a href="#raw-text-elements" title="raw text
408: elements">Raw text</a>, <a href="#rcdata-elements" title="RCDATA
409: elements">RCDATA</a>, and <a href="#normal-elements" title="normal
410: elements">normal</a> elements have a <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> to indicate where they
411: begin, and an <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> to
412: indicate where they end. The start and end tags of certain
413: <a href="#normal-elements">normal elements</a> can be <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>, as described
1.1 mike 414: later. Those that cannot be omitted must not be omitted. <a href="#void-elements">Void
415: elements</a> only have a start tag; end tags must not be
1.373 mike 416: specified for <a href="#void-elements">void elements</a>. <a href="#foreign-elements">Foreign
417: elements</a> must either have a start tag and an end tag, or a
418: start tag that is marked as self-closing, in which case they must
419: not have an end tag.</p><p>The contents of the element must be placed between just after the
1.1 mike 420: start tag (which <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied,
421: in certain cases</a>) and just before the end tag (which again,
422: <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied in certain
423: cases</a>). The exact allowed contents of each individual element
424: depends on the content model of that element, as described earlier
425: in this specification. Elements must not contain content that their
426: content model disallows. In addition to the restrictions placed on
427: the contents by those content models, however, the five types of
1.123 mike 428: elements have additional <em>syntactic</em> requirements.</p><p><a href="#void-elements">Void elements</a> can't have any contents (since there's
1.1 mike 429: no end tag, no content can be put between the start tag and the end
1.373 mike 430: tag).</p><p><a href="#raw-text-elements">Raw text elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, though it has <a href="#cdata-rcdata-restrictions">restrictions</a> described
431: below.</p><p><a href="#rcdata-elements">RCDATA elements</a> can have <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, but the text
432: must not contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.
1.1 mike 433: There are also <a href="#cdata-rcdata-restrictions">further
1.373 mike 434: restrictions</a> described below.</p><p><a href="#foreign-elements">Foreign elements</a> whose start tag is marked as
435: self-closing can't have any contents (since, again, as there's no
436: end tag, no content can be put between the start tag and the end
437: tag). <a href="#foreign-elements">Foreign elements</a> whose start tag is <em>not</em>
438: marked as self-closing can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, <a href="#syntax-cdata" title="syntax-cdata">CDATA sections</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.588 mike 439: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><div class="note">
1.374 mike 440:
441: <p>The HTML syntax does not support namespace
442: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
443:
444: <p>For instance, consider the following HTML fragment:</p>
445:
446: <pre><p>
447: <svg>
448: <metadata>
449: <!-- this is invalid -->
450: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
451: </metadata>
452: </svg>
453: </p></pre>
454:
455: <p>The innermost element, <code title="">cdr:license</code>, is
456: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
457: XML). In fact, as the comment in the fragment above says, the
458: fragment is actually non-conforming. This is because the SVG
459: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
460:
461: </div><p><a href="#normal-elements">Normal elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.588 mike 462: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>. Some
463: <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 464: content they are allowed to hold, beyond the restrictions imposed by
465: the content model and those described in this paragraph. Those
1.123 mike 466: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 467: giving the element's name. HTML elements all have names that only
1.464 mike 468: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
469: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
470: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
471: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 472: elements</a>, may be written with any mix of lower- and uppercase
473: letters that, when converted to all-lowercase, matches the element's
1.755 mike 474: tag name; tag names are case-insensitive.</p><h5 id="start-tags"><span class="secno">8.1.2.1 </span>Start tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-start-tag" title="syntax-start-tag">Start tags</dfn> must have the
1.123 mike 475: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.588 mike 476: SIGN character (<).</li>
1.1 mike 477:
478: <li>The next few characters of a start tag must be the element's
479: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
480:
481: <li>If there are to be any attributes in the next step, there must
482: first be one or more <a href="infrastructure.html#space-character" title="space character">space
483: characters</a>.</li>
484:
485: <li>Then, the start tag may have a number of attributes, the <a href="#syntax-attributes" title="syntax-attributes">syntax for which</a> is described
486: below. Attributes may be separated from each other by one or more
487: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
488:
1.766 mike 489: <li>After the attributes, or after the <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a> if there are no attributes,
490: there may be one or more <a href="infrastructure.html#space-character" title="space character">space
491: characters</a>. (Some attributes are required to be followed by
492: a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes
493: section</a> below.)</li>
1.1 mike 494:
495: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 496: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
1.588 mike 497: element</a>, then there may be a single U+002F SOLIDUS character
498: (/). This character has no effect on <a href="#void-elements">void elements</a>,
499: but on <a href="#foreign-elements">foreign elements</a> it marks the start tag as
500: self-closing.</li>
1.1 mike 501:
502: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
1.588 mike 503: SIGN character (>).</li>
1.1 mike 504:
1.755 mike 505: </ol><h5 id="end-tags"><span class="secno">8.1.2.2 </span>End tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-end-tag" title="syntax-end-tag">End tags</dfn> must have the
1.123 mike 506: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.588 mike 507: SIGN character (<).</li>
1.1 mike 508:
509: <li>The second character of an end tag must be a U+002F SOLIDUS
1.588 mike 510: character (/).</li>
1.1 mike 511:
512: <li>The next few characters of an end tag must be the element's
513: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
514:
515: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
516: character">space characters</a>.</li>
517:
1.588 mike 518: <li>Finally, end tags must be closed by a U+003E GREATER-THAN SIGN
519: character (>).</li>
1.1 mike 520:
1.755 mike 521: </ol><h5 id="attributes"><span class="secno">8.1.2.3 </span>Attributes</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-attributes" title="syntax-attributes">Attributes</dfn> for an element
1.123 mike 522: are expressed inside the element's start tag.</p><p>Attributes have a name and a value. <dfn id="syntax-attribute-name" title="syntax-attribute-name">Attribute names</dfn> must consist of
1.1 mike 523: one or more characters other than the <a href="infrastructure.html#space-character" title="space
524: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
525: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
526: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
527: the control characters, and any characters that are not defined by
1.462 mike 528: Unicode. In the HTML syntax, attribute names, even those for
529: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
530: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 531: case-insensitive</a> match for the attribute's name.</p><p><dfn id="syntax-attribute-value" title="syntax-attribute-value">Attribute values</dfn> are a
1.1 mike 532: mixture of <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, except with the
1.123 mike 533: additional restriction that the text cannot contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><p>Attributes can be specified in four different ways:</p><dl><dt>Empty attribute syntax</dt>
1.1 mike 534:
535: <dd>
536:
537: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
538: name</a>.</p>
539:
540: <div class="example">
541:
542: <p>In the following example, the <code title="attr-fe-disabled"><a href="forms.html#attr-fe-disabled">disabled</a></code> attribute is given with
543: the empty attribute syntax:</p>
544:
545: <pre><input <em>disabled</em>></pre>
546:
547: </div>
548:
549: <p>If an attribute using the empty attribute syntax is to be
550: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
551: character</a> separating the two.</p>
552:
553: </dd>
554:
1.2 mike 555: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 556:
557: <dd>
558:
559: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
560: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
561: characters</a>, followed by a single U+003D EQUALS SIGN
562: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
563: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
564: addition to the requirements given above for attribute values,
565: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
1.588 mike 566: characters</a>, any U+0022 QUOTATION MARK characters ("),
567: U+0027 APOSTROPHE characters ('), U+003D EQUALS SIGN
568: characters (=), U+003C LESS-THAN SIGN characters (<), U+003E
569: GREATER-THAN SIGN characters (>), or U+0060 GRAVE ACCENT
570: characters (`), and must not be the empty string.</p>
1.463 mike 571:
572: <!-- The ` character is in this list on a temporary basis, waiting
573: for IE to fix it's parsing bug whereby it treats ` as an
574: attribute value delimiter. Otherwise, escaping software that
575: tries to be clever and not use quotes when it doesn't need to
576: could be tricked by an attacker.
577:
578: Posit a site that allows the user to input text that is used
579: verbatim in two attributes, such that the user can set the
580: first attribute's value to:
581:
582: `
583:
584: ...and the second to:
585:
586: ` onload='...payload...' end=x
587:
588: ...with the assumption that the site is going to not quote
589: the first one, and quote the second one with double quotes:
590:
591: <body title=` class="` onload='...payload...' end=x">
592:
593: In IE, this is treated as:
594:
595: <body title=' class="'
596: onload='...payload...'
597: end='x"'>
598:
599: -->
600:
1.1 mike 601:
602: <div class="example">
603:
604: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
605: with the unquoted attribute value syntax:</p>
606:
607: <pre><input <em>value=yes</em>></pre>
608:
609: </div>
610:
611: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 612: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 613: character (/) allowed in step 6 of the <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> syntax above, then there
1.1 mike 614: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
615:
616: </dd>
617:
618: <dt>Single-quoted attribute value syntax</dt>
619:
620: <dd>
621:
622: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
623: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
624: characters</a>, followed by a single U+003D EQUALS SIGN
625: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
626: character">space characters</a>, followed by a single U+0027
1.588 mike 627: APOSTROPHE character ('), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 628: addition to the requirements given above for attribute values,
1.588 mike 629: must not contain any literal U+0027 APOSTROPHE characters ('), and
630: finally followed by a second single U+0027 APOSTROPHE character
631: (').</p>
1.1 mike 632:
633: <div class="example">
634:
635: <p>In the following example, the <code title="attr-input-type"><a href="forms.html#attr-input-type">type</a></code> attribute is given with the
636: single-quoted attribute value syntax:</p>
637:
638: <pre><input <em>type='checkbox'</em>></pre>
639:
640: </div>
641:
642: <p>If an attribute using the single-quoted attribute syntax is to
643: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
644: character</a> separating the two.</p>
645:
646: </dd>
647:
648: <dt>Double-quoted attribute value syntax</dt>
649:
650: <dd>
651:
652: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
653: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
654: characters</a>, followed by a single U+003D EQUALS SIGN
655: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
656: character">space characters</a>, followed by a single U+0022
1.588 mike 657: QUOTATION MARK character ("), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 658: addition to the requirements given above for attribute values,
1.588 mike 659: must not contain any literal U+0022 QUOTATION MARK characters ("),
660: and finally followed by a second single U+0022 QUOTATION MARK
661: character (").</p>
1.1 mike 662:
663: <div class="example">
664:
665: <p>In the following example, the <code title="attr-fe-name"><a href="forms.html#attr-fe-name">name</a></code> attribute is given with the
666: double-quoted attribute value syntax:</p>
667:
668: <pre><input <em>name="be evil"</em>></pre>
669:
670: </div>
671:
672: <p>If an attribute using the double-quoted attribute syntax is to
673: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
674: character</a> separating the two.</p>
675:
676: </dd>
677:
678: </dl><p>There must never be two or more attributes on the same start tag
679: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 680: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
681: one of the namespaced attributes given by the local name and
682: namespace of the first and second cells of a row from the following
683: table, it must be written using the name given by the third cell
684: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
1.724 mike 685: </th></tr></thead><tbody><tr><td> <code title="">actuate</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:actuate</code>
686: </td></tr><tr><td> <code title="">arcrole</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:arcrole</code>
687: </td></tr><tr><td> <code title="">href</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:href</code>
688: </td></tr><tr><td> <code title="">role</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:role</code>
689: </td></tr><tr><td> <code title="">show</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:show</code>
690: </td></tr><tr><td> <code title="">title</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:title</code>
691: </td></tr><tr><td> <code title="">type</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:type</code>
692: </td></tr><tr><td> <code title="">base</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> <!-- attr-xml-base --> </td><td> <code title="">xml:base</code>
693: </td></tr><tr><td> <code title="">lang</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> </td><td> <code title="">xml:lang</code>
694: </td></tr><tr><td> <code title="">space</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> </td><td> <code title="">xml:space</code>
695: </td></tr><tr><td> <code title="">xmlns</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns</code>
696: </td></tr><tr><td> <code title="">xlink</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns:xlink</code>
1.671 mike 697: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in <a href="#syntax">the
1.755 mike 698: HTML syntax</a>.</p><h5 id="optional-tags"><span class="secno">8.1.2.4 </span>Optional tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>Certain tags can be <dfn id="syntax-tag-omission" title="syntax-tag-omission">omitted</dfn>.</p><p class="note">Omitting an element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> does not mean the element
1.1 mike 699: is not present; it is implied, but it is still there. An HTML
1.159 mike 700: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 701: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 702: the markup.</p><!-- <html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
703: first thing inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
704: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
705: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted <!--if the
1.1 mike 706: element is empty, or--> if the first thing inside the
1.159 mike 707: <code><a href="semantics.html#the-head-element-0">head</a></code> element is an element.</p><!-- </head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
708: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
709: immediately followed by a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
710: element is empty, or if the first thing inside the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 711: element is not a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>, except if the first thing
1.159 mike 712: inside the <code><a href="semantics.html#the-body-element-0">body</a></code> element is a <code><a href="semantics.html#script">script</a></code> or
1.1 mike 713: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
1.724 mike 714: tag is present, the parser makes <style> and <script type="text/javascript"> elements
1.1 mike 715: between </head> and <body> end up in the <head> instead of implying
1.159 mike 716: the <body> --></p><!-- </body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
717: tag</a> may be omitted if the <code><a href="semantics.html#the-body-element-0">body</a></code> element is not
1.123 mike 718: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </li> --><p>A <code><a href="semantics.html#the-li-element">li</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 719: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
720: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 721: is no more content in the parent element.</p><!-- </dt> --><p>A <code><a href="semantics.html#the-dt-element">dt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 722: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
723: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 724: <code><a href="semantics.html#the-dd-element">dd</a></code> element.</p><!-- </dd> --><p>A <code><a href="semantics.html#the-dd-element">dd</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 725: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
726: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
727: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 728: parent element.</p><!-- </p> --><p>A <code><a href="semantics.html#the-p-element">p</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 729: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
730: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
731: <code><a href="semantics.html#the-article-element">article</a></code>, <code><a href="semantics.html#the-aside-element">aside</a></code>, <code><a href="semantics.html#the-blockquote-element">blockquote</a></code>,
1.305 mike 732: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 733: <code><a href="semantics.html#the-div-element">div</a></code>, <code><a href="semantics.html#the-dl-element">dl</a></code>, <code><a href="forms.html#the-fieldset-element">fieldset</a></code>,
1.305 mike 734: <code><a href="semantics.html#the-footer-element">footer</a></code>, <code><a href="forms.html#the-form-element">form</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a></code>,
735: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a></code>,
736: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a></code>, <code><a href="semantics.html#the-header-element">header</a></code>, <code><a href="semantics.html#the-hgroup-element">hgroup</a></code>,
737: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="interactive-elements.html#menus">menu</a></code>, <code><a href="semantics.html#the-nav-element">nav</a></code>,
738: <code><a href="semantics.html#the-ol-element">ol</a></code>, <code><a href="semantics.html#the-p-element">p</a></code>, <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.1 mike 739: <code><a href="semantics.html#the-section-element">section</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>, or <code><a href="semantics.html#the-ul-element">ul</a></code>,
740: element, or if there is no more content in the parent element and
1.123 mike 741: the parent element is not an <code><a href="text-level-semantics.html#the-a-element">a</a></code> element.</p><!-- </rt> --><p>An <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 742: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
743: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 744: element, or if there is no more content in the parent element.</p><!-- </rp> --><p>An <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 745: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
746: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 747: element, or if there is no more content in the parent element.</p><!-- </optgroup> (the text assumes <optgroup> can only be inside a
1.1 mike 748: <select>; commented out text below can handle the non-<select> case
1.123 mike 749: if we ever allow it) --><p>An <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 750: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
751: <code>select</code> element and--> is immediately followed by
752: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
753: that are ancestors of the <code>optgroup</code> element, up to and
754: including the first ancestor element that is not an
755: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 756: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 757: <select><optgroup></select>
758: <p id=x><optgroup></optgroup>x</p>
759: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
760: <p><optgroup id=x><optgroup></optgroup>x</p>
761: <p><optgroup><optgroup id=x>x</p>
1.123 mike 762: --><!-- </option> --><p>An <code><a href="forms.html#the-option-element">option</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 763: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
764: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
765: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 766: if there is no more content in the parent element.</p><!-- <colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 767: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
768: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
769: preceded by another <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> has been omitted. (It can't be
1.123 mike 770: omitted if the element is empty.)</p><!-- </colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 771: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 772: <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </thead> --><p>A <code><a href="tabular-data.html#the-thead-element">thead</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 773: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
774: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 775: element.</p><!-- <tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 776: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
777: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
778: preceded by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or
779: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
780: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 781: empty.)</p><!-- </tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 782: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
783: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 784: element, or if there is no more content in the parent element.</p><!-- </tfoot> --><p>A <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 785: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
786: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 787: no more content in the parent element.</p><!-- </tr> --><p>A <code><a href="tabular-data.html#the-tr-element">tr</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 788: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
789: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 790: is no more content in the parent element.</p><!-- </td> --><p>A <code><a href="tabular-data.html#the-td-element">td</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 791: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
792: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 793: element, or if there is no more content in the parent element.</p><!-- </th> --><p>A <code><a href="tabular-data.html#the-th-element">th</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 794: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
795: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 796: element, or if there is no more content in the parent element.</p><p><strong>However</strong>, a <a href="#syntax-start-tag" title="syntax-start-tag">start
1.755 mike 797: tag</a> must never be omitted if it has any attributes.</p><h5 id="element-restrictions"><span class="secno">8.1.2.5 </span>Restrictions on content models</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>For historical reasons, certain elements have extra restrictions
1.123 mike 798: beyond even the restrictions given by their content model.</p><p>A <code><a href="tabular-data.html#the-table-element">table</a></code> element must not contain <code><a href="tabular-data.html#the-tr-element">tr</a></code>
1.1 mike 799: elements, even though these elements are technically allowed inside
800: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
801: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
802: put inside a <code><a href="tabular-data.html#the-table-element">table</a></code> in the markup, it will in fact imply
1.304 mike 803: a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag before it.)</p><p>A single <a href="#syntax-newlines" title="syntax-newlines">newline</a> may be
804: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 805: tag</a> of <code><a href="semantics.html#the-pre-element">pre</a></code> and <code><a href="forms.html#the-textarea-element">textarea</a></code>
806: elements. This does not affect the processing of the element. The
1.304 mike 807: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 808: <em>must</em> be included if the element's contents themselves start
809: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
810: otherwise the leading newline in the contents would be treated like
811: the optional newline, and ignored).</p><div class="example">
1.1 mike 812: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
813: <pre><pre>Hello</pre></pre>
814: <pre><pre><br>Hello</pre></pre>
1.755 mike 815: </div><h5 id="cdata-rcdata-restrictions"><span class="secno">8.1.2.6 </span>Restrictions on the contents of raw text and RCDATA elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>The text in <a href="#raw-text-elements" title="raw text elements">raw text</a> and
1.373 mike 816: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
817: contain any occurrences of the string "<code title=""></</code>"
818: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 819: case-insensitively match the tag name of the element followed by one
820: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 821: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.755 mike 822: GREATER-THAN SIGN (>), or U+002F SOLIDUS (/).</p><h4 id="text"><span class="secno">8.1.3 </span>Text</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-text" title="syntax-text">Text</dfn> is allowed inside elements,
1.1 mike 823: attributes, and comments. Text must consist of Unicode characters.
824: Text must not contain U+0000 characters. Text must not contain
1.316 mike 825: permanently undefined Unicode characters (noncharacters). Text must
826: not contain control characters other than <a href="infrastructure.html#space-character" title="space
827: character">space characters</a>. Extra constraints are placed on
828: what is and what is not allowed in text based on where the text is
1.755 mike 829: to be put, as described in the other sections.</p><h5 id="newlines"><span class="secno">8.1.3.1 </span>Newlines</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-newlines" title="syntax-newlines">Newlines</dfn> in HTML may be
1.1 mike 830: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
831: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.755 mike 832: U+000A LINE FEED (LF) characters in that order.</p><h4 id="character-references"><span class="secno">8.1.4 </span>Character references</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>In certain cases described in other sections, <a href="#syntax-text" title="syntax-text">text</a> may be mixed with <dfn id="syntax-charref" title="syntax-charref">character references</dfn>. These can be used
1.1 mike 833: to escape characters that couldn't otherwise legally be included in
1.588 mike 834: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND character
835: (&). Following this, there are three possible kinds of character
836: references:</p><dl><dt>Named character references</dt>
1.1 mike 837:
838: <dd>The ampersand must be followed by one of the names given in the
839: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
1.677 mike 840: case. <span class="impl">The name must be one that is terminated by
841: a U+003B SEMICOLON character (;).</span></dd>
1.1 mike 842:
843:
844: <dt>Decimal numeric character reference</dt>
845:
846: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 847: character (#), followed by one or more digits in the range U+0030
848: DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing a base-ten
849: integer that corresponds to a Unicode code point that is allowed
850: according to the definition below. The digits must then be followed
851: by a U+003B SEMICOLON character (;).</dd>
1.1 mike 852:
853:
854: <dt>Hexadecimal numeric character reference</dt>
855:
856: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 857: character (#), which must be followed by either a U+0078 LATIN
858: SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL LETTER X
859: character (X), which must then be followed by one or more digits in
860: the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061
861: LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041
862: LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
1.464 mike 863: representing a base-sixteen integer that corresponds to a Unicode
864: code point that is allowed according to the definition below. The
865: digits must then be followed by a U+003B SEMICOLON character
866: (;).</dd>
1.378 mike 867:
868: </dl><p>The numeric character reference forms described above are allowed
869: to reference any Unicode code point other than U+0000, permanently
870: undefined Unicode characters (noncharacters), and control characters
871: other than <a href="infrastructure.html#space-character" title="space character">space
872: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 873: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
874: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
875: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
1.755 mike 876: (<), or another U+0026 AMPERSAND character (&).</p><h4 id="cdata-sections"><span class="secno">8.1.5 </span>CDATA sections</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-cdata" title="syntax-cdata">CDATA sections</dfn> must start with
1.1 mike 877: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
878: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
879: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
880: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
881: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
882: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
883: that the text must not contain the three character sequence U+005D
884: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
885: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
886: section must be ended by the three character sequence U+005D RIGHT
887: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.724 mike 888: SIGN (<code title="">]]></code>).</p><div class="example">
889:
890: <p>CDATA sections can only be used in foreign content (MathML or
891: SVG). In this example, a CDATA section is used to escape the
892: contents of an <code>ms</code> element:</p>
893:
894: <pre><p>You can add a string to a number, but this stringifies the number:</p>
895: <math>
896: <ms><![CDATA[x<y]]></ms>
897: <mo>+</mo>
898: <mn>3</mn>
899: <mo>=</mo>
900: <ms><![CDATA[x<y3]]></ms>
901: </math></pre>
902:
1.755 mike 903: </div><h4 id="comments"><span class="secno">8.1.6 </span>Comments</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-comments" title="syntax-comments">Comments</dfn> must start with the
1.1 mike 904: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
905: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
906: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
907: restriction that the text must not start with a single U+003E
1.588 mike 908: GREATER-THAN SIGN character (>), nor start with a U+002D
909: HYPHEN-MINUS character (-) followed by a U+003E GREATER-THAN SIGN
910: (>) character, nor contain two consecutive U+002D HYPHEN-MINUS
911: characters (<code title="">--</code>), nor end with a U+002D
912: HYPHEN-MINUS character (-). Finally, the comment must be ended by
1.1 mike 913: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 914: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 915:
1.755 mike 916: <h3 id="parsing"><span class="secno">8.2 </span>Parsing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 917:
918: <p><i>This section only applies to user agents, data mining tools,
919: and conformance checkers.</i></p>
920:
921: <p class="note">The rules for parsing XML documents into DOM trees
922: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
923: syntax</a>".</p>
924:
925: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
926: rules described in this section to generate the DOM trees. Together,
927: these rules define what is referred to as the <dfn id="html-parser">HTML
928: parser</dfn>.</p>
929:
930: <div class="note">
931:
932: <p>While the HTML syntax described in this specification bears a
933: close resemblance to SGML and XML, it is a separate language with
934: its own parsing rules.</p>
935:
1.183 mike 936: <p>Some earlier versions of HTML (in particular from HTML2 to
937: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 938: (if any) web browsers ever implemented true SGML parsing for HTML
939: documents; the only user agents to strictly handle HTML as an SGML
940: application have historically been validators. The resulting
941: confusion — with validators claiming documents to have one
942: representation while widely deployed Web browsers interoperably
943: implemented a different representation — has wasted decades
944: of productivity. This version of HTML thus returns to a non-SGML
945: basis.</p>
946:
947: <p>Authors interested in using SGML tools in their authoring
948: pipeline are encouraged to use XML tools and the XML serialization
949: of HTML.</p>
950:
951: </div>
952:
953: <p>This specification defines the parsing rules for HTML documents,
954: whether they are syntactically correct or not. Certain points in the
955: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
956: errors</dfn>. The error handling for parse errors is well-defined:
957: user agents must either act as described below when encountering
958: such problems, or must abort processing at the first error that they
959: encounter for which they do not wish to apply the rules described
960: below.</p>
961:
962: <p>Conformance checkers must report at least one parse error
963: condition to the user if one or more parse error conditions exist in
964: the document and must not report parse error conditions if none
965: exist in the document. Conformance checkers may report more than one
1.174 mike 966: parse error condition if more than one parse error condition exists
1.1 mike 967: in the document. Conformance checkers are not required to recover
968: from parse errors.</p>
969:
970: <p class="note">Parse errors are only errors with the
971: <em>syntax</em> of HTML. In addition to checking for parse errors,
972: conformance checkers will also verify that the document obeys all
973: the other conformance requirements described in this
974: specification.</p>
975:
976: <p>For the purposes of conformance checkers, if a resource is
977: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
978: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
979:
1.266 mike 980: </div><div class="impl">
1.1 mike 981:
1.755 mike 982: <h4 id="overview-of-the-parsing-model"><span class="secno">8.2.1 </span>Overview of the parsing model</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 983:
984: <p>The input to the HTML parsing process consists of a stream of
985: Unicode characters, which is passed through a
986: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
987: construction</a> stage. The output is a <code>Document</code>
988: object.</p>
989:
990: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
991: support scripting</a> do not have to actually create a DOM
992: <code>Document</code> object, but the DOM tree in such cases is
993: still used as the model for the rest of the specification.</p>
994:
995: <p>In the common case, the data handled by the tokenization stage
1.159 mike 996: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
997: insertion">it can also come from script</a>, e.g. using the <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> API.</p>
1.1 mike 998:
1.724 mike 999: <p><img alt="" src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png"></p>
1.1 mike 1000:
1001: <p id="nestedParsing">There is only one set of states for the
1002: tokenizer stage and the tree construction stage, but the tree
1003: construction stage is reentrant, meaning that while the tree
1004: construction stage is handling one token, the tokenizer might be
1005: resumed, causing further tokens to be emitted and processed before
1006: the first token's processing is complete.</p>
1007:
1008: <div class="example">
1009:
1010: <p>In the following example, the tree construction stage will be
1011: called upon to handle a "p" start tag token while handling the
1012: "script" start tag token:</p>
1013:
1014: <pre>...
1015: <script>
1016: document.write('<p>');
1017: </script>
1018: ...</pre>
1019:
1020: </div>
1021:
1022: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
1023: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
1024: pause flag</dfn>, which must be initially set to false.</p>
1025:
1.266 mike 1026: </div><div class="impl">
1.1 mike 1027:
1.755 mike 1028: <h4 id="the-input-stream"><span class="secno">8.2.2 </span>The <dfn>input stream</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1029:
1030: <p>The stream of Unicode characters that comprises the input to the
1031: tokenization stage will be initially seen by the user agent as a
1032: stream of bytes (typically coming over the network or from the local
1033: file system). The bytes encode the actual characters according to a
1034: particular <em>character encoding</em>, which the user agent must
1035: use to decode the bytes into characters.</p>
1036:
1037: <p class="note">For XML documents, the algorithm user agents must
1038: use to determine the character encoding is given by the XML
1.104 mike 1039: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 1040:
1041:
1.755 mike 1042: <h5 id="determining-the-character-encoding"><span class="secno">8.2.2.1 </span>Determining the character encoding</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1043:
1044: <p>In some cases, it might be impractical to unambiguously determine
1045: the encoding before parsing the document. Because of this, this
1046: specification provides for a two-pass mechanism with an optional
1047: pre-scan. Implementations are allowed, as described below, to apply
1048: a simplified parsing algorithm to whatever bytes they have available
1049: before beginning to parse the document. Then, the real parser is
1050: started, using a tentative encoding derived from this pre-parse and
1051: other out-of-band metadata. If, while the document is being loaded,
1052: the user agent discovers an encoding declaration that conflicts with
1053: this information, then the parser can get reinvoked to perform a
1054: parse of the document with the real encoding.</p>
1055:
1056: <p id="documentEncoding">User agents must use the following
1057: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
1058: the character encoding to use when decoding a document in the first
1059: pass. This algorithm takes as input any out-of-band metadata
1060: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
1061: and all the bytes available so far, and returns an encoding and a
1062: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
1063: confidence is either <i>tentative</i>, <i>certain</i>, or
1064: <i>irrelevant</i>. The encoding used, and whether the confidence in
1065: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
1066: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
1067: encoding is necessary, e.g. because the parser is operating on a
1068: stream of Unicode characters and doesn't have to use an encoding at
1069: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
1070: <i>irrelevant</i>.</p>
1071:
1072: <ol><li><p>If the transport layer specifies an encoding, and it is
1073: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1074: <i>certain</i>, and abort these steps.</p></li>
1075:
1076: <li><p>The user agent may wait for more bytes of the resource to be
1077: available, either in this step or at any later step in this
1078: algorithm. For instance, a user agent might wait 500ms or 512
1079: bytes, whichever came first. In general preparsing the source to
1080: find the encoding improves performance, as it reduces the need to
1081: throw away the data structures used when parsing upon finding the
1082: encoding information. However, if the user agent delays too long to
1083: obtain data to determine the encoding, then the cost of the delay
1084: could outweigh any performance improvements from the
1085: preparse.</p></li>
1086:
1087: <li><p>For each of the rows in the following table, starting with
1088: the first one and going down, if there are as many or more bytes
1089: available than the number of bytes in the first column, and the
1090: first bytes of the file match the bytes given in the first column,
1091: then return the encoding given in the cell in the second column of
1092: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1093: <i>certain</i>, and abort these steps:</p>
1094:
1095: <!-- this table is present in several forms in this file; keep them in sync -->
1096: <table><thead><tr><th>Bytes in Hexadecimal
1097: </th><th>Encoding
1098: </th></tr></thead><tbody><!-- nobody uses this
1099: <tr>
1100: <td>00 00 FE FF
1101: <td>UTF-32BE
1102: <tr>
1103: <td>FF FE 00 00
1104: <td>UTF-32LE
1105: --><tr><td>FE FF
1106: </td><td>UTF-16BE
1107: </td></tr><tr><td>FF FE
1108: </td><td>UTF-16LE
1109: </td></tr><tr><td>EF BB BF
1110: </td><td>UTF-8
1111: <!-- nobody uses this
1112: <tr>
1113: <td>DD 73 66 73
1114: <td>UTF-EBCDIC
1115: -->
1116: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1117: (BOMs).</p></li>
1118:
1119: <li><p>Otherwise, the user agent will have to search for explicit
1120: character encoding information in the file itself. This should
1121: proceed as follows:
1122:
1123: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1124: input stream, initially pointing at the first byte. If at any
1125: point during these substeps the user agent either runs out of
1126: bytes or decides that scanning further bytes would not be
1127: efficient, then skip to the next step of the overall character
1128: encoding detection algorithm. User agents may decide that scanning
1129: <em>any</em> bytes is not efficient, in which case these substeps
1130: are entirely skipped.</p>
1131:
1132: <p>Now, repeat the following "two" steps until the algorithm
1133: aborts (either because user agent aborts, as described above, or
1134: because a character encoding is found):</p>
1135:
1136: <ol><li><p>If <var title="">position</var> points to:</p>
1137:
1138: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1139: <dd>
1140:
1141: <p>Advance the <var title="">position</var> pointer so that it
1142: points at the first 0x3E byte which is preceded by two 0x2D
1143: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1144: after the 0x3C byte that was found. (The two 0x2D bytes can be
1145: the same as the those in the '<!--' sequence.)</p>
1146:
1147: </dd>
1148:
1149: <dt>A sequence of bytes starting with: 0x3C, 0x4D or 0x6D, 0x45 or 0x65, 0x54 or 0x74, 0x41 or 0x61, and finally one of 0x09, 0x0A, 0x0C, 0x0D, 0x20, 0x2F (case-insensitive ASCII '<meta' followed by a space or slash)</dt>
1150: <dd>
1151:
1152: <ol><li><p>Advance the <var title="">position</var> pointer so
1153: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1154: 0x2F byte (the one in sequence of characters matched
1155: above).</p></li>
1156:
1157: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1158: an attribute</a> and its value. If no attribute was
1159: sniffed, then skip this inner set of steps, and jump to the
1160: second step in the overall "two step" algorithm.</p></li>
1161:
1162: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1163: then return to step 2 in these inner steps.</p></li>
1164:
1165: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1166: the attribute's value, interpreted as a character
1167: encoding.</p></li>
1168:
1169: <li><p>Otherwise, the attribute's name is "<code title="">content</code>": apply the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for
1170: extracting an encoding from a Content-Type</a>, giving the
1171: attribute's value as the string to parse. If an encoding is
1172: returned, let <var title="">charset</var> be that
1173: encoding. Otherwise, return to step 2 in these inner
1174: steps.</p></li>
1175:
1176: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1177: change the value of <var title="">charset</var> to
1178: UTF-8.</p></li>
1179:
1180: <li><p>If <var title="">charset</var> is a supported
1181: character encoding, then return the given encoding, with
1182: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1183: <i>tentative</i>, and abort all these steps.</p></li>
1184:
1185: <li><p>Otherwise, return to step 2 in these inner
1186: steps.</p></li>
1187:
1188: </ol></dd>
1189:
1.464 mike 1190: <dt>A sequence of bytes starting with a 0x3C byte (ASCII <), optionally a 0x2F byte (ASCII /), and finally a byte in the range 0x41-0x5A or 0x61-0x7A (an ASCII letter)</dt>
1.1 mike 1191: <dd>
1192:
1193: <ol><li><p>Advance the <var title="">position</var> pointer so
1194: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1195: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1196: (ASCII >) byte.</p></li>
1.1 mike 1197:
1198: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1199: attribute</a> until no further attributes can be found,
1200: then jump to the second step in the overall "two step"
1201: algorithm.</p></li>
1202:
1203: </ol></dd>
1204:
1205: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1206: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1207: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1208: <dd>
1209:
1210: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1211: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1212: 0x3C byte that was found.</p>
1213:
1214: </dd>
1215:
1216: <dt>Any other byte</dt>
1217: <dd>
1218:
1219: <p>Do nothing with that byte.</p>
1220:
1221: </dd>
1222:
1223: </dl></li>
1224:
1225: <li>Move <var title="">position</var> so it points at the next
1226: byte in the input stream, and return to the first step of this
1227: "two step" algorithm.</li>
1228:
1229: </ol><p>When the above "two step" algorithm says to <dfn id="concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1230: attribute</dfn>, it means doing this:</p>
1231:
1232: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1233: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1234: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1235: substep.</p></li>
1236:
1237: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1238: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1239: one.</p></li>
1240:
1241: <li><p>Otherwise, the byte at <var title="">position</var> is the
1242: start of the attribute name. Let <var title="">attribute
1243: name</var> and <var title="">attribute value</var> be the empty
1244: string.</p></li>
1245:
1246: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1247:
1.464 mike 1248: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1249: name</var> is longer than the empty string</dt>
1250:
1251: <dd>Advance <var title="">position</var> to the next byte and
1252: jump to the step below labeled <i>value</i>.</dd>
1253:
1254: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1255: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1256:
1257: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1258:
1.464 mike 1259: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1260:
1261: <dd>Abort the "get an attribute" algorithm. The attribute's
1262: name is the value of <var title="">attribute name</var>, its
1263: value is the empty string.</dd>
1264:
1.464 mike 1265: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1266: Z)</dt>
1.1 mike 1267:
1268: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1269: name</var> (where <var title="">b</var> is the value of the
1270: byte at <var title="">position</var>).</dd>
1271:
1272: <dt>Anything else</dt>
1273:
1274: <dd>Append the Unicode character with the same code point as the
1275: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1276: bytes outside the ASCII range are handled here, since only
1277: ASCII characters can contribute to the detection of a character
1278: encoding.)</dd>
1279:
1280: </dl></li>
1281:
1282: <li><p>Advance <var title="">position</var> to the next byte and
1283: return to the previous step.</p></li>
1284:
1285: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1286: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1287: advance <var title="">position</var> to the next byte, then,
1288: repeat this step.</p></li>
1289:
1290: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1291: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1292: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1293: string.</p></li>
1294:
1295: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1296: =) byte.</p></li>
1.1 mike 1297:
1298: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1299: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1300: advance <var title="">position</var> to the next byte, then,
1301: repeat this step.</p></li>
1302:
1303: <li><p>Process the byte at <var title="">position</var> as
1304: follows:</p>
1305:
1.464 mike 1306: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1307:
1308: <dd>
1309:
1310: <ol><li>Let <var title="">b</var> be the value of the byte at
1311: <var title="">position</var>.</li>
1312:
1313: <li>Advance <var title="">position</var> to the next
1314: byte.</li>
1315:
1316: <li>If the value of the byte at <var title="">position</var>
1317: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1318: an attribute" algorithm. The attribute's name is the value of
1319: <var title="">attribute name</var>, and its value is the
1320: value of <var title="">attribute value</var>.</li>
1321:
1.464 mike 1322: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1323: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1324: than the value of the byte at <var title="">position</var>.</li>
1325:
1326: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1327: the value of the byte at <var title="">position</var>.</li>
1328:
1329: <li>Return to the second step in these substeps.</li>
1330:
1331: </ol></dd>
1332:
1.464 mike 1333: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1334:
1335: <dd>Abort the "get an attribute" algorithm. The attribute's
1336: name is the value of <var title="">attribute name</var>, its
1337: value is the empty string.</dd>
1338:
1339:
1.464 mike 1340: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1341: Z)</dt>
1.1 mike 1342:
1343: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1344: value</var> (where <var title="">b</var> is the value of the
1345: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1346:
1347: <dt>Anything else</dt>
1348:
1349: <dd>Append the Unicode character with the same code point as the
1350: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>. Advance <var title="">position</var> to the next byte.</dd>
1351:
1352: </dl></li>
1353:
1354: <li><p>Process the byte at <var title="">position</var> as
1355: follows:</p>
1356:
1357: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1358: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1359: >)</dt>
1.1 mike 1360:
1361: <dd>Abort the "get an attribute" algorithm. The attribute's
1362: name is the value of <var title="">attribute name</var> and its
1363: value is the value of <var title="">attribute value</var>.</dd>
1364:
1.464 mike 1365: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1366: Z)</dt>
1.1 mike 1367:
1368: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1369: value</var> (where <var title="">b</var> is the value of the
1370: byte at <var title="">position</var>).</dd>
1371:
1372: <dt>Anything else</dt>
1373:
1374: <dd>Append the Unicode character with the same code point as the
1375: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1376:
1377: </dl></li>
1378:
1379: <li><p>Advance <var title="">position</var> to the next byte and
1380: return to the previous step.</p></li>
1381:
1382: </ol><p>For the sake of interoperability, user agents should not use a
1383: pre-scan algorithm that returns different results than the one
1384: described above. (But, if you do, please at least let us know, so
1385: that we can improve this algorithm and benefit everyone...)</p>
1386:
1387: </li>
1388:
1389: <li><p>If the user agent has information on the likely encoding for
1390: this page, e.g. based on the encoding of the page when it was last
1391: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1392: <i>tentative</i>, and abort these steps.</p></li>
1393:
1.322 mike 1394: <li>
1395:
1396: <p>The user agent may attempt to autodetect the character encoding
1397: from applying frequency analysis or other algorithms to the data
1.568 mike 1398: stream. Such algorithms may use information about the resource
1399: other than the resource's contents, including the address of the
1400: resource. If autodetection succeeds in determining a character
1.322 mike 1401: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1402: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1403:
1404: <p class="note">The UTF-8 encoding has a highly detectable bit
1405: pattern. Documents that contain bytes with values greater than
1406: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1407: while documents with byte sequences that do not match it are very
1408: likely not. User-agents are therefore encouraged to search for
1.485 mike 1409: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1410:
1411: </li>
1.1 mike 1412:
1.501 mike 1413: <li>
1414:
1415: <p>Otherwise, return an implementation-defined or user-specified
1416: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1417: <i>tentative</i>.</p>
1418:
1419: <p>In controlled environments or in environments where the
1420: encoding of documents can be prescribed (for example, for user
1421: agents intended for dedicated use in new networks), the
1422: comprehensive <code title="">UTF-8</code> encoding is
1423: suggested.</p>
1424:
1425: <p>In other environments, the default encoding is typically
1426: dependent on the user's locale (an approximation of the languages,
1.760 mike 1427: and thus often encodings, of the pages that the user is likely to
1428: frequent). The following table gives suggested defaults based on
1429: the user's locale, for compatibility with legacy content. Locales
1430: are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1431:
1432: <!-- based on mozilla 1.9.1 localizations:
1433: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1434:
1.504 mike 1435: <table><thead><tr><th>Locale language
1.501 mike 1436: </th><th>Suggested default encoding
1437: </th></tr></thead><tbody><tr><td>ar
1438: </td><td>UTF-8
1439:
1440: </td></tr><tr><td>be
1441: </td><td>ISO-8859-5
1442:
1443: </td></tr><tr><td>bg
1444: </td><td>windows-1251
1445:
1446: </td></tr><tr><td>cs<!-- -CZ -->
1447: </td><td>ISO-8859-2
1448:
1449: </td></tr><tr><td>cy
1450: </td><td>UTF-8
1451:
1452: </td></tr><tr><td>fa<!-- -IR -->
1453: </td><td>UTF-8
1454:
1455: </td></tr><tr><td>he<!-- -IL -->
1456: </td><td>windows-1255
1457:
1458: </td></tr><tr><td>hr
1459: </td><td>UTF-8
1460:
1461: </td></tr><tr><td>hu<!-- -HU -->
1462: </td><td>ISO-8859-2
1463:
1464: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1465: </td><td>windows-31J <!-- Shift_JIS -->
1466:
1467: </td></tr><tr><td>kk
1468: </td><td>UTF-8
1469:
1470: </td></tr><tr><td>ko<!-- -KR -->
1471: </td><td>windows-949 <!-- EUC-KR -->
1472:
1473: </td></tr><tr><td>ku
1474: </td><td>windows-1254 <!-- ISO-8859-9 -->
1475:
1476: </td></tr><tr><td>lt
1477: </td><td>windows-1257
1478:
1479: </td></tr><tr><td>lv<!-- -LV -->
1480: </td><td>ISO-8859-13
1481:
1482: </td></tr><tr><td>mk<!-- -MK -->
1483: </td><td>UTF-8
1484:
1485: </td></tr><tr><td>or
1486: </td><td>UTF-8
1487:
1488: </td></tr><tr><td>pl<!-- -PL -->
1489: </td><td>ISO-8859-2
1490:
1491: </td></tr><tr><td>ro
1492: </td><td>UTF-8
1493:
1494: </td></tr><tr><td>ru
1495: </td><td>windows-1251
1496:
1497: </td></tr><tr><td>sk
1498: </td><td>windows-1250
1499:
1500: </td></tr><tr><td>sl
1501: </td><td>ISO-8859-2
1502:
1503: </td></tr><tr><td>sr
1504: </td><td>UTF-8
1505:
1506: </td></tr><tr><td>th
1507: </td><td>windows-874 <!-- TIS-620 -->
1508:
1509: </td></tr><tr><td>tr<!-- -TR -->
1510: </td><td>windows-1254 <!-- ISO-8859-9 -->
1511:
1.503 mike 1512: </td></tr><tr><td>uk
1.501 mike 1513: </td><td>windows-1251
1514:
1515: </td></tr><tr><td>vi
1516: </td><td>UTF-8
1517:
1518: </td></tr><tr><td>zh-CN
1519: </td><td>GB18030
1520:
1521: </td></tr><tr><td>zh-TW
1522: </td><td>Big5
1523:
1524: </td></tr><tr><td>All other locales
1525: </td><td>windows-1252
1526:
1527: </td></tr></tbody></table></li>
1.1 mike 1528:
1529: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1530: be set to the value returned from this algorithm, at the same time
1531: as the user agent uses the returned value to select the decoder to
1532: use for the input stream.</p>
1533:
1.582 mike 1534: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1535: of the HTTP specification, which requires that the encoding be
1536: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1.647 mike 1537: encoding declaration</a> to the contrary, and of RFC 2046,
1.582 mike 1538: which requires that the encoding be assumed to be US-ASCII in the
1539: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1540: contrary. This specification's third approach is motivated by a
1541: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1542:
1.1 mike 1543:
1.755 mike 1544: <h5 id="character-encodings-0"><span class="secno">8.2.2.2 </span>Character encodings</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1545:
1.237 mike 1546: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1547: encodings, but may support more.</p>
1548:
1549: <p class="note">It is not unusual for Web browsers to support dozens
1550: if not upwards of a hundred distinct character encodings.</p>
1551:
1.365 mike 1552: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1553: every character encoding they support, and should support all the
1554: IANA-registered names and aliases of every character encoding they
1555: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1556:
1557: <p>When comparing a string specifying a character encoding with the
1558: name or alias of a character encoding to determine if they are
1559: equal, user agents must remove any leading or trailing <a href="infrastructure.html#space-character" title="space character">space characters</a> in both names, and
1560: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1561: case-insensitive</a> manner.</p>
1562:
1.539 mike 1563: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1564: first column of the following table to either convert content to
1565: Unicode characters or convert Unicode characters to bytes, it must
1566: instead use the encoding given in the cell in the second column of
1567: the same row. When a byte or sequence of bytes is treated
1568: differently due to this encoding aliasing, it is said to have been
1569: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1570:
1571: <table><caption>Character encoding overrides</caption>
1572: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1573: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1574: <a href="references.html#refsEUCKR">[EUCKR]</a>
1575: <a href="references.html#refsWIN949">[WIN949]</a>
1576: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1577: <a href="references.html#refsRFC1345">[RFC1345]</a>
1578: <a href="references.html#refsGBK">[GBK]</a>
1579: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1580: <a href="references.html#refsRFC1345">[RFC1345]</a>
1581: <a href="references.html#refsGBK">[GBK]</a>
1582: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1583: <a href="references.html#refsRFC1345">[RFC1345]</a>
1584: <a href="references.html#refsWIN1252">[WIN1252]</a>
1585: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1586: <a href="references.html#refsRFC1345">[RFC1345]</a>
1587: <a href="references.html#refsWIN1254">[WIN1254]</a>
1588: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1589: <a href="references.html#refsISO885911">[ISO885911]</a>
1590: <a href="references.html#refsWIN874">[WIN874]</a>
1591: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1592: <a href="references.html#refsRFC1345">[RFC1345]</a>
1593: <a href="references.html#refsWIN949">[WIN949]</a>
1594: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1595: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1596: <a href="references.html#refsWIN31J">[WIN31J]</a>
1597: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1598: <a href="references.html#refsTIS620">[TIS620]</a>
1599: <a href="references.html#refsWIN874">[WIN874]</a>
1600: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1601: <a href="references.html#refsRFC1345">[RFC1345]</a>
1602: <a href="references.html#refsWIN1252">[WIN1252]</a>
1603: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1604: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1605: violation</a> of the W3C Character Model specification, motivated
1606: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1607:
1608: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1609: been found, user agents must default to UTF-16LE.</p>
1610:
1611: <p class="note">The requirement to default UTF-16 to LE rather than
1612: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1613: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1614:
1615: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1616: encodings. <a href="references.html#refsCESU8">[CESU8]</a> <a href="references.html#refsUTF7">[UTF7]</a> <a href="references.html#refsBOCU1">[BOCU1]</a> <a href="references.html#refsSCSU">[SCSU]</a></p>
1617:
1618: <p>Support for encodings based on EBCDIC is not recommended. This
1619: encoding is rarely used for publicly-facing Web content.</p>
1620:
1621: <p>Support for UTF-32 is not recommended. This encoding is rarely
1622: used, and frequently implemented incorrectly.</p>
1623:
1624: <p class="note">This specification does not make any attempt to
1625: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1626: and use of these encodings can thus lead to unexpected behavior in
1627: implementations of this specification.</p>
1628:
1629:
1630:
1.755 mike 1631: <h5 id="preprocessing-the-input-stream"><span class="secno">8.2.2.3 </span>Preprocessing the input stream</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1632:
1633: <p>Given an encoding, the bytes in the input stream must be
1634: converted to Unicode characters for the tokenizer, as described by
1635: the rules for that encoding, except that the leading U+FEFF BYTE
1636: ORDER MARK character, if any, must not be stripped by the encoding
1637: layer (it is stripped by the rule below).</p> <!-- this is to
1638: prevent two leading BOMs from being both stripped, once by the
1639: decoder, and once by the parser -->
1640:
1641: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1642: could not be converted to Unicode code points must be converted to
1643: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1644:
1645: <p class="note">Bytes or sequences of bytes in the original byte
1646: stream that did not conform to the encoding specification
1647: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1648: errors that conformance checkers are expected to report.</p>
1649:
1.438 mike 1650: <p>Any byte or sequence of bytes in the original byte stream that is
1651: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1652: error</a>.</p>
1653:
1654: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1655: any are present.</p>
1656:
1.300 mike 1657: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1658: character regardless of whether that character was used to determine
1659: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1660: motivated by a desire to increase the resilience of user agents in
1661: the face of naïve transcoders.</p>
1662:
1.316 mike 1663: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1664: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1665: them to suddenly turn into codepoints when they go through a UTF-16
1666: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1667: CHARACTERs. Any occurrences of such characters and code points are
1668: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1669:
1670: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1671: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1672: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1673: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1674: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1675: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1676: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1677: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1678: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1679: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1680: errors</a>. These are all control characters or permanently
1681: undefined Unicode characters (noncharacters).</p>
1.1 mike 1682:
1683: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1684: characters are treated specially. Any CR characters that are
1685: followed by LF characters must be removed, and any CR characters not
1686: followed by LF characters must be converted to LF characters. Thus,
1687: newlines in HTML DOMs are represented by LF characters, and there
1688: are never any CR characters in the input to the
1689: <a href="#tokenization">tokenization</a> stage.</p>
1690:
1691: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1692: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1693: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1694: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1695: to have been <i><a href="#consumed">consumed</a></i>.</p>
1696:
1697: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1698: character or just before the end of the input stream) where content
1.159 mike 1699: inserted using <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> is actually
1.1 mike 1700: inserted. The insertion point is relative to the position of the
1701: character immediately after it, it is not an absolute offset into
1702: the input stream. Initially, the insertion point is
1.10 mike 1703: undefined.</p>
1.1 mike 1704:
1705: <p>The "EOF" character in the tables below is a conceptual character
1706: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1707: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1708: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1709: character</dfn> (inserted by the <code title="dom-document-close"><a href="embedded-content-0.html#dom-document-close">document.close()</a></code> method) is
1.1 mike 1710: consumed. Otherwise, the "EOF" character is not a real character in
1711: the stream, but rather the lack of any further characters.</p>
1712:
1713:
1.755 mike 1714: <h5 id="changing-the-encoding-while-parsing"><span class="secno">8.2.2.4 </span>Changing the encoding while parsing</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1715:
1716: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1717: encoding</dfn>, it must run the following steps. This might happen
1718: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1719: failed to find an encoding, or if it found an encoding that was not
1720: the actual encoding of the file.</p>
1721:
1722: <ol><li>If the new encoding is identical or equivalent to the encoding
1723: that is already being used to interpret the input stream, then set
1724: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1725: <i>certain</i> and abort these steps. This happens when the
1726: encoding information found in the file matches what the
1727: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1728: encoding, and in the second pass through the parser if the first
1729: pass found that the encoding sniffing algorithm described in the
1730: earlier section failed to find the right encoding.</li>
1731:
1732: <li>If the encoding that is already being used to interpret the
1733: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1734: <i>certain</i> and abort these steps. The new encoding is ignored;
1735: if it was anything but the same encoding, then it would be clearly
1736: incorrect.</li>
1737:
1738: <li>If the new encoding is a UTF-16 encoding, change it to
1739: UTF-8.</li>
1740:
1741: <li>If all the bytes up to the last byte converted by the current
1742: decoder have the same Unicode interpretations in both the current
1743: encoding and the new encoding, and if the user agent supports
1744: changing the converter on the fly, then the user agent may change
1745: to the new converter for the encoding on the fly. Set the
1746: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1747: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1748: <i>certain</i>, and abort these steps.</li>
1749:
1750: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1751: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1752: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1753: sniffing algorithm</a> and instead just set the encoding to the
1754: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1755: <i>certain</i>. Whenever possible, this should be done without
1756: actually contacting the network layer (the bytes should be
1757: re-parsed from memory), even if, e.g., the document is marked as
1758: not being cacheable. If this is not possible and contacting the
1759: network layer would involve repeating a request that uses a method
1760: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1761: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1762: <i>certain</i> and ignore the new encoding. The resource will be
1763: misinterpreted. User agents may notify the user of the situation,
1764: to aid in application development.</li>
1765:
1.266 mike 1766: </ol></div><div class="impl">
1767:
1.755 mike 1768: <h4 id="parse-state"><span class="secno">8.2.3 </span>Parse state</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1769:
1.755 mike 1770: <h5 id="the-insertion-mode"><span class="secno">8.2.3.1 </span>The insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1771:
1772: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1773: the primary operation of the tree construction stage.</p>
1774:
1775: <p>Initially, the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion mode: initial">initial</a>". It can change to
1776: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1777: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1778: "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>", "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head noscript</a>",
1.540 mike 1779: "<a href="#the-after-head-insertion-mode" title="insertion mode: after head">after head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>", "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>",
1.1 mike 1780: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>", "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table text</a>", "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>", "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>",
1781: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1782: "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>", "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>", "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>", "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
1783: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1784: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1785: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1786: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1787: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1788: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1789: frameset</a>" during the course of the parsing, as described in
1790: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1791: how tokens are processed and whether CDATA sections are
1792: supported.</p>
1793:
1794: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1795: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1796: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1797: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1798: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1799: "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>", and "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>", are special, in
1800: that the other modes defer to them at various times. When the
1801: algorithm below says that the user agent is to do something
1802: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1803: mode", where <var title="">m</var> is one of these modes, the user
1804: agent must use the rules described under the <var title="">m</var>
1805: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1806: <a href="#insertion-mode">insertion mode</a> unchanged unless the rules in <var title="">m</var> themselves switch the <a href="#insertion-mode">insertion mode</a>
1807: to a new value.</p>
1808:
1809: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1810: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1811: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1812: is also set. This is the insertion mode to which the tree
1813: construction stage will return.</p>
1.1 mike 1814:
1815: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1816: mode: in foreign content">in foreign content</a>", the
1817: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1818: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1819: foreign content">in foreign content</a>" mode to handle HTML
1820: (i.e. not foreign) content.</p>
1821:
1822: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1823: mode appropriately</dfn>, it means the UA must follow these
1824: steps:</p>
1825:
1826: <ol><li>Let <var title="">last</var> be false.</li>
1827:
1.604 mike 1828: <li>Let <var title="">foreign</var> be false.</li>
1829:
1.1 mike 1830: <li>Let <var title="">node</var> be the last node in the
1831: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1832:
1.604 mike 1833: <li><i>Loop</i>: If <var title="">node</var> is the first node in
1834: the stack of open elements, then set <var title="">last</var> to
1835: true and set <var title="">node</var> to the <var title="">context</var> element. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1836:
1837: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1.604 mike 1838: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" and jump to the
1839: step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1840:
1841: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1842: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1843: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1.604 mike 1844: mode: in cell">in cell</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1845:
1846: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1847: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1.604 mike 1848: mode: in row">in row</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1849:
1850: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1851: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, then switch the
1852: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1.604 mike 1853: table body">in table body</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1854:
1855: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1.604 mike 1856: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>" and jump to
1857: the step marked <i title="">end</i>.</li>
1.1 mike 1858:
1859: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1860: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>" and
1.604 mike 1861: jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1862: case</a>)</li>
1.1 mike 1863:
1864: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1.604 mike 1865: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" and jump to the
1866: step marked <i title="">end</i>.</li>
1.1 mike 1867:
1.159 mike 1868: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.604 mike 1869: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" ("<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>"! <em> not "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>"</em>!) and jump to
1870: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1871: case</a>)</li> <!-- This is only here for now in case people
1872: think that the spec accidentally omitted it and try to "fix"
1873: it. Note that noscript-in-head is also handled this way. This is
1874: all intentional. The only thing it doesn't handle is the
1875: scripting-disabled fragment parsing case for a <head> element
1876: containing a <noscript> which itself contains something other than
1877: a <link> or a <style> element; you'd expect that to break out of
1878: the <noscript> but it doesn't. This is an edge case that doesn't
1879: affect the spec, since the algorithm for fragment parsing is only
1880: used for innerHTML/outerHTML/insertAdjacentHTML(), where we know
1881: scripting is enabled. -->
1.1 mike 1882:
1.159 mike 1883: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.604 mike 1884: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and jump to the
1885: step marked <i title="">end</i>.</li>
1.1 mike 1886:
1.5 mike 1887: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.604 mike 1888: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>" and jump to
1889: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1890: case</a>)</li>
1.1 mike 1891:
1.159 mike 1892: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1893: then <!--: if the <span><code title="">head</code> element
1894: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1895: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1896: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1897: to "<span title="insertion mode: after head">after head</span>".-->
1.604 mike 1898: Then, <!-- in either case, --> jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li> <!-- if the
1899: head element pointer can ever be non-null when we're going through
1900: these steps, we'll need to uncomment out the commented-out bits -->
1901:
1.724 mike 1902: <li>If <var title="">node</var> is an element from the <a href="infrastructure.html#mathml-namespace">MathML
1903: namespace</a> or the <a href="infrastructure.html#svg-namespace">SVG namespace</a>, then set the
1.604 mike 1904: <var title="">foreign</var> flag to true.</li>
1.1 mike 1905:
1906: <li>If <var title="">last</var> is true, then switch the
1907: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1.604 mike 1908: body">in body</a>" and jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1909:
1910: <li>Let <var title="">node</var> now be the node before <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1911: elements</a>.</li>
1912:
1.604 mike 1913: <li>Return to the step marked <i>loop</i>.</li>
1914:
1915: <li><i>End</i>: If <var title="">foreign</var> is true, switch the
1916: <a href="#secondary-insertion-mode">secondary insertion mode</a> to whatever the
1917: <a href="#insertion-mode">insertion mode</a> is set to, and switch the
1918: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1919: foreign content">in foreign content</a>".</li>
1.1 mike 1920:
1.755 mike 1921: </ol><h5 id="the-stack-of-open-elements"><span class="secno">8.2.3.2 </span>The stack of open elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1922:
1923: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1924: stack grows downwards; the topmost node on the stack is the first
1925: one added to the stack, and the bottommost node of the stack is the
1926: most recently added node in the stack (notwithstanding when the
1927: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1928:
1929: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1930: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1931: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1932: stack.</p>
1933:
1934: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1935: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1936: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1937: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1938: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1939: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1940:
1.159 mike 1941: <p>The <code><a href="semantics.html#the-html-element-0">html</a></code> node, however it is created, is the topmost
1.1 mike 1942: node of the stack. It never gets popped off the stack.</p>
1943:
1944: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1945: stack.</p>
1946:
1947: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1948: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1949: one. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of
1950: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1951: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1952: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1953:
1954: <p>Elements in the stack fall into the following categories:</p>
1955:
1956: <dl><dt><dfn id="special">Special</dfn></dt>
1957:
1958: <dd><p>The following HTML elements have varying levels of special
1959: parsing rules: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="the-canvas-element.html#the-area-element">area</a></code>,
1960: <code><a href="semantics.html#the-article-element">article</a></code>, <code><a href="semantics.html#the-aside-element">aside</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>,
1.724 mike 1961: <code><a href="obsolete.html#basefont">basefont</a></code>, <code><a href="obsolete.html#bgsound">bgsound</a></code>,
1.159 mike 1962: <code><a href="semantics.html#the-blockquote-element">blockquote</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>,
1.5 mike 1963: <code><a href="obsolete.html#center">center</a></code>, <code><a href="tabular-data.html#the-col-element">col</a></code>, <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code>,
1.755 mike 1964: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID <code>datagrid</code>-->,
1.422 mike 1965: <code><a href="semantics.html#the-dd-element">dd</a></code>, <code><a href="interactive-elements.html#the-details-element">details</a></code>, <code><a href="obsolete.html#dir">dir</a></code>,
1966: <code><a href="semantics.html#the-div-element">div</a></code>, <code><a href="semantics.html#the-dl-element">dl</a></code>, <code><a href="semantics.html#the-dt-element">dt</a></code>,
1.762 mike 1967: <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>, <code><a href="forms.html#the-fieldset-element">fieldset</a></code>, <code><a href="semantics.html#the-figure-element">figure</a></code>,
1.422 mike 1968: <code><a href="semantics.html#the-footer-element">footer</a></code>, <code><a href="forms.html#the-form-element">form</a></code>, <code><a href="obsolete.html#frame">frame</a></code>,
1969: <code><a href="obsolete.html#frameset">frameset</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a></code>,
1970: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a></code>,
1971: <code><a href="semantics.html#the-head-element-0">head</a></code>, <code><a href="semantics.html#the-header-element">header</a></code>, <code><a href="semantics.html#the-hgroup-element">hgroup</a></code>,
1972: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <!-- <code>image</code>,
1973: (commented out because this isn't an element that can end up on the
1974: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
1975: <code><a href="forms.html#the-input-element">input</a></code>, <code><a href="obsolete.html#isindex-0">isindex</a></code>, <code><a href="semantics.html#the-li-element">li</a></code>,
1976: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="obsolete.html#listing">listing</a></code>, <code><a href="interactive-elements.html#menus">menu</a></code>,
1977: <code><a href="semantics.html#meta">meta</a></code>, <code><a href="semantics.html#the-nav-element">nav</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>,
1978: <code><a href="obsolete.html#noframes">noframes</a></code>, <code><a href="semantics.html#the-noscript-element">noscript</a></code>, <code><a href="semantics.html#the-ol-element">ol</a></code>,
1979: <code><a href="semantics.html#the-p-element">p</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>, <code><a href="obsolete.html#plaintext">plaintext</a></code>,
1980: <code><a href="semantics.html#the-pre-element">pre</a></code>, <code><a href="semantics.html#script">script</a></code>, <code><a href="semantics.html#the-section-element">section</a></code>,
1.589 mike 1981: <code><a href="forms.html#the-select-element">select</a></code>, <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1982: <code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>,
1983: <code><a href="semantics.html#the-title-element-0">title</a></code>, <code><a href="tabular-data.html#the-tr-element">tr</a></code>, <code><a href="semantics.html#the-ul-element">ul</a></code>,
1.724 mike 1984: <code><a href="obsolete.html#wbr">wbr</a></code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 1985:
1986: <dt><dfn id="scoping">Scoping</dfn></dt>
1987: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
1988: an element in scope">scopes</a> for various parts of the
1.5 mike 1989: parsing: <code><a href="obsolete.html#the-applet-element">applet</a></code>, <code><a href="forms.html#the-button-element">button</a></code>,
1.159 mike 1990: <code><a href="tabular-data.html#the-caption-element">caption</a></code>, <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="obsolete.html#the-marquee-element">marquee</a></code>,
1991: <code><a href="text-level-semantics.html#the-object-element">object</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>, <code><a href="tabular-data.html#the-td-element">td</a></code>,
1.1 mike 1992: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
1993:
1994: <dt><dfn id="formatting">Formatting</dfn></dt>
1995: <dd><p>The following HTML elements are those that end up in the
1996: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>: <code><a href="text-level-semantics.html#the-a-element">a</a></code>,
1.5 mike 1997: <code><a href="text-level-semantics.html#the-b-element">b</a></code>, <code><a href="obsolete.html#big">big</a></code>, <code><a href="text-level-semantics.html#the-code-element">code</a></code>,
1998: <code><a href="text-level-semantics.html#the-em-element">em</a></code>, <code><a href="obsolete.html#font">font</a></code>, <code><a href="text-level-semantics.html#the-i-element">i</a></code>,
1.724 mike 1999: <code><a href="obsolete.html#nobr">nobr</a></code>, <code><a href="obsolete.html#s">s</a></code>, <code><a href="text-level-semantics.html#the-small-element">small</a></code>,
1.5 mike 2000: <code><a href="obsolete.html#strike">strike</a></code>, <code><a href="text-level-semantics.html#the-strong-element">strong</a></code>, <code><a href="obsolete.html#tt">tt</a></code>, and
2001: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 2002:
2003: <dt><dfn id="phrasing">Phrasing</dfn></dt>
2004: <dd><p>All other elements found while parsing an HTML
2005: document.</p></dd>
2006:
1.234 mike 2007: </dl><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-the-specific-scope" title="has an element in the specific scope">have an element in a
2008: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
2009: match state:</p>
1.1 mike 2010:
2011: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
2012: node</a> (the bottommost node of the stack).</p></li>
2013:
2014: <li><p>If <var title="">node</var> is the target node, terminate in
2015: a match state.</p></li>
2016:
1.234 mike 2017: <li><p>Otherwise, if <var title="">node</var> is one of the element
2018: types in <var title="">list</var>, terminate in a failure
2019: state.</p></li>
1.1 mike 2020:
2021: <li><p>Otherwise, set <var title="">node</var> to the previous
2022: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
2023: 2. (This will never fail, since the loop will always terminate in
2024: the previous step if the top of the stack — an
1.159 mike 2025: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 2026:
1.234 mike 2027: </ol><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-scope" title="has an element in scope">have an element in scope</dfn> when
2028: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
2029: of the following element types:</p>
2030:
2031: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
2032: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
2033: <li><code><a href="semantics.html#the-html-element-0">html</a></code> in the HTML namespace</li> <!-- (This can only happen if the <var title="">node</var> is the topmost node of the <span>stack of open elements</span>, and prevents the next step from being invoked if there are no more elements in the stack.) -->
2034: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2035: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
2036: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
2037: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
2038: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
2039: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
2040: <li><code title="">foreignObject</code> in the SVG namespace</li>
2041: </ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-list-item-scope" title="has an element in list item scope">have an element in list
2042: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2043: scope</a> consisting of the following element types:</p>
2044:
2045: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
2046: in scope</a></i> algorithm.</li>
2047: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
2048: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
2049: </ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-table-scope" title="has an element in table scope">have an element in <em>table
2050: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2051: scope</a> consisting of the following element types:</p>
2052:
2053: <ul class="brief"><li><code><a href="semantics.html#the-html-element-0">html</a></code> in the HTML namespace</li> <!-- (This can only happen if the <var title="">node</var> is the topmost node of the <span>stack of open elements</span>, and prevents the next step from being invoked if there are no more elements in the stack.) -->
2054: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2055: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 2056: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
2057: or removed from, the <code>Document</code> tree. In particular, the
2058: stack is not changed in this situation. This can cause, amongst
2059: other strange effects, content to be appended to nodes that are no
2060: longer in the DOM.</p>
2061:
2062: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
2063: the stack is manipulated in a random-access fashion.</p>
2064:
2065:
1.755 mike 2066: <h5 id="the-list-of-active-formatting-elements"><span class="secno">8.2.3.3 </span>The list of active formatting elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2067:
2068: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
2069: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
2070:
2071: <p>The list contains elements in the <a href="#formatting">formatting</a>
2072: category, and scope markers. The scope markers are inserted when
1.159 mike 2073: entering <code><a href="obsolete.html#the-applet-element">applet</a></code> elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code>
1.1 mike 2074: elements, marquees, table cells, and table captions, and are used to
1.5 mike 2075: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 2076: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 2077: tables.</p>
2078:
2079: <p class="note">The scope markers are unrelated to the concept of an
2080: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
2081: scope</a>.</p>
2082:
2083: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
2084: elements</a> is associated with the token for which it was
2085: created, so that further elements can be created for that token if
2086: necessary.</p>
2087:
2088: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
2089: active formatting elements</dfn>, the UA must perform the following
2090: steps:</p>
2091:
2092: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
2093: elements</a>, then there is nothing to reconstruct; stop this
2094: algorithm.</li>
2095:
2096: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2097: active formatting elements</a> is a marker, or if it is an
2098: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2099: there is nothing to reconstruct; stop this algorithm.</li>
2100:
2101: <li>Let <var title="">entry</var> be the last (most recently added)
2102: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2103: elements</a>.</li>
2104:
2105: <li>If there are no entries before <var title="">entry</var> in the
2106: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2107: 8.</li>
2108:
2109: <li>Let <var title="">entry</var> be the entry one earlier than
2110: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2111: elements</a>.</li>
2112:
2113: <li>If <var title="">entry</var> is neither a marker nor an element
2114: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2115: 4.</li>
2116:
2117: <li>Let <var title="">entry</var> be the element one later than
2118: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2119: elements</a>.</li>
2120:
2121: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2122: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2123:
2124: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2125: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2126: elements</a> so that it is the new <a href="#current-node">current
2127: node</a>.</li>
2128:
2129: <li>Replace the entry for <var title="">entry</var> in the list
2130: with an entry for <var title="">new element</var>.</li>
2131:
2132: <li>If the entry for <var title="">new element</var> in the
2133: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2134: entry in the list, return to step 7.</li>
2135:
2136: </ol><p>This has the effect of reopening all the formatting elements that
2137: were opened in the current body, cell, or caption (whichever is
2138: youngest) that haven't been explicitly closed.</p>
2139:
2140: <p class="note">The way this specification is written, the
2141: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2142: elements in chronological order with the least recently added
2143: element first and the most recently added element last (except for
2144: while steps 8 to 11 of the above algorithm are being executed, of
2145: course).</p>
2146:
2147: <p>When the steps below require the UA to <dfn id="clear-the-list-of-active-formatting-elements-up-to-the-last-marker">clear the list of
2148: active formatting elements up to the last marker</dfn>, the UA must
2149: perform the following steps:</p>
2150:
2151: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2152: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2153:
2154: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2155: formatting elements</a>.</li>
2156:
2157: <li>If <var title="">entry</var> was a marker, then stop the
2158: algorithm at this point. The list has been cleared up to the last
2159: marker.</li>
2160:
2161: <li>Go to step 1.</li>
2162:
1.755 mike 2163: </ol><h5 id="the-element-pointers"><span class="secno">8.2.3.4 </span>The element pointers</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2164:
2165: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2166: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2167: pointer</dfn> are both null.</p>
2168:
1.159 mike 2169: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2170: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2171: element pointer</a> gets set to point to this node.</p>
2172:
2173: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2174: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2175: whose end tag has not yet been seen. It is used to make form
2176: controls associate with forms in the face of dramatically bad
2177: markup, for historical reasons.</p>
2178:
2179:
1.755 mike 2180: <h5 id="other-parsing-state-flags"><span class="secno">8.2.3.5 </span>Other parsing state flags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2181:
1.755 mike 2182: <p>The <dfn id="scripting-flag">scripting flag</dfn> is set to "enabled" if <a href="web-application-apis.html#concept-n-script" title="concept-n-script">scripting was enabled</a> for the
1.1 mike 2183: <code>Document</code> with which the parser is associated when the
2184: parser was created, and "disabled" otherwise.</p>
2185:
2186: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2187: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2188: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2189: don't execute in that case.</p>
2190:
2191: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2192: created. It is set to "not ok" after certain tokens are seen.</p>
2193:
1.266 mike 2194: </div><div class="impl">
1.1 mike 2195:
1.755 mike 2196: <h4 id="tokenization"><span class="secno">8.2.4 </span><dfn>Tokenization</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2197:
2198: <p>Implementations must act as if they used the following state
2199: machine to tokenize HTML. The state machine must start in the
2200: <a href="#data-state">data state</a>. Most states consume a single character,
2201: which may have various side-effects, and either switches the state
2202: machine to a new state to <em>reconsume</em> the same character, or
2203: switches it to a new state (to consume the next character), or
2204: repeats the same state (to consume the next character). Some states
2205: have more complicated behavior and can consume several characters
1.541 mike 2206: before switching to another state. In some cases, the tokenizer
2207: state is also changed by the tree construction stage.</p>
1.1 mike 2208:
1.541 mike 2209: <p>The exact behavior of certain states depends on the
2210: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2211: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2212: buffer</var></dfn> to track progress.</p>
1.1 mike 2213:
2214: <p>The output of the tokenization step is a series of zero or more
2215: of the following tokens: DOCTYPE, start tag, end tag, comment,
2216: character, end-of-file. DOCTYPE tokens have a name, a public
2217: identifier, a system identifier, and a <i>force-quirks
2218: flag</i>. When a DOCTYPE token is created, its name, public
2219: identifier, and system identifier must be marked as missing (which
2220: is a distinct state from the empty string), and the <i>force-quirks
2221: flag</i> must be set to <i>off</i> (its other state is
2222: <i>on</i>). Start and end tag tokens have a tag name, a
2223: <i>self-closing flag</i>, and a list of attributes, each of which
2224: has a name and a value. When a start or end tag token is created,
2225: its <i>self-closing flag</i> must be unset (its other state is that
2226: it be set), and its attributes list must be empty. Comment and
2227: character tokens have data.</p>
2228:
2229: <p>When a token is emitted, it must immediately be handled by the
2230: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2231: can affect the state of the tokenization stage, and can insert
2232: additional characters into the stream. (For example, the
1.1 mike 2233: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2234: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2235: characters into the stream being tokenized.)</p>
2236:
2237: <p>When a start tag token is emitted with its <i>self-closing
2238: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2239: self-closing flag">acknowledged</dfn> when it is processed by the
2240: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2241:
2242: <p>When an end tag token is emitted with attributes, that is a
2243: <a href="#parse-error">parse error</a>.</p>
2244:
2245: <p>When an end tag token is emitted with its <i>self-closing
2246: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2247:
1.541 mike 2248: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2249: tag name matches the tag name of the last start tag to have been
2250: emitted from this tokenizer, if any. If no start tag has been
2251: emitted from this tokenizer, then no end tag token is
2252: appropriate.</p>
2253:
1.1 mike 2254: <p>Before each step of the tokenizer, the user agent must first
2255: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2256: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2257: tokenizer, yielding control back to the caller.</p>
1.1 mike 2258:
2259: <p>The tokenizer state machine consists of the states defined in the
2260: following subsections.</p>
2261:
1.541 mike 2262:
1.333 mike 2263: <!-- Order of the lists below is supposed to be non-error then
2264: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2265:
1.541 mike 2266:
1.755 mike 2267: <h5 id="data-state"><span class="secno">8.2.4.1 </span><dfn>Data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2268:
2269: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2270:
2271: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2272: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2273: state</a>.</dd>
1.1 mike 2274:
1.541 mike 2275: <dt>U+003C LESS-THAN SIGN (<)</dt>
2276: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2277:
2278: <dt>EOF</dt>
2279: <dd>Emit an end-of-file token.</dd>
2280:
2281: <dt>Anything else</dt>
2282: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2283: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2284:
1.755 mike 2285: </dl><h5 id="character-reference-in-data-state"><span class="secno">8.2.4.2 </span><dfn>Character reference in data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.618 mike 2286:
2287: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2288: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2289:
2290: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2291: token.</p>
2292:
2293: <p>Otherwise, emit the character token that was returned.</p>
2294:
2295: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
2296:
2297:
1.755 mike 2298: <h5 id="rcdata-state"><span class="secno">8.2.4.3 </span><dfn>RCDATA state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2299:
1.541 mike 2300: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2301:
1.541 mike 2302: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.618 mike 2303: <dd>Switch to the <a href="#character-reference-in-rcdata-state">character reference in RCDATA
1.541 mike 2304: state</a>.</dd>
1.1 mike 2305:
2306: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2307: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2308:
2309: <dt>EOF</dt>
2310: <dd>Emit an end-of-file token.</dd>
1.1 mike 2311:
1.541 mike 2312: <dt>Anything else</dt>
2313: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2314: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2315:
1.755 mike 2316: </dl><h5 id="character-reference-in-rcdata-state"><span class="secno">8.2.4.4 </span><dfn>Character reference in RCDATA state</dfn></h5>
1.618 mike 2317:
2318: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2319: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2320:
2321: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2322: token.</p>
2323:
2324: <p>Otherwise, emit the character token that was returned.</p>
2325:
2326: <p>Finally, switch to the <a href="#rcdata-state">RCDATA state</a>.</p>
2327:
2328:
1.755 mike 2329: <h5 id="rawtext-state"><span class="secno">8.2.4.5 </span><dfn>RAWTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2330:
1.541 mike 2331: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2332:
1.541 mike 2333: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2334: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2335:
2336: <dt>EOF</dt>
2337: <dd>Emit an end-of-file token.</dd>
2338:
2339: <dt>Anything else</dt>
1.541 mike 2340: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2341: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2342:
1.755 mike 2343: </dl><h5 id="script-data-state"><span class="secno">8.2.4.6 </span><dfn>Script data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2344:
1.541 mike 2345: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2346:
1.541 mike 2347: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2348: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2349:
1.541 mike 2350: <dt>EOF</dt>
2351: <dd>Emit an end-of-file token.</dd>
1.1 mike 2352:
1.541 mike 2353: <dt>Anything else</dt>
2354: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2355: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2356:
1.755 mike 2357: </dl><h5 id="plaintext-state"><span class="secno">8.2.4.7 </span><dfn>PLAINTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2358:
1.541 mike 2359: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2360:
1.541 mike 2361: <dl class="switch"><dt>EOF</dt>
2362: <dd>Emit an end-of-file token.</dd>
1.1 mike 2363:
1.541 mike 2364: <dt>Anything else</dt>
2365: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2366: token. Stay in the <a href="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2367:
1.755 mike 2368: </dl><h5 id="tag-open-state"><span class="secno">8.2.4.8 </span><dfn>Tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2369:
1.541 mike 2370: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2371:
1.541 mike 2372: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2373: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2374:
1.541 mike 2375: <dt>U+002F SOLIDUS (/)</dt>
1.755 mike 2376: <dd>Switch to the <a href="#end-tag-open-state">end tag open state</a>.</dd>
1.1 mike 2377:
1.541 mike 2378: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2379: <dd>Create a new start tag token, set its tag name to the
2380: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2381: character's code point), then switch to the <a href="#tag-name-state">tag name
2382: state</a>. (Don't emit the token yet; further details will
2383: be filled in before it is emitted.)</dd>
1.1 mike 2384:
1.541 mike 2385: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2386: <dd>Create a new start tag token, set its tag name to the
2387: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2388: name state</a>. (Don't emit the token yet; further details will
2389: be filled in before it is emitted.)</dd>
1.1 mike 2390:
1.541 mike 2391: <dt>U+003F QUESTION MARK (?)</dt>
2392: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2393: comment state</a>.</dd>
1.1 mike 2394:
1.541 mike 2395: <dt>Anything else</dt>
2396: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2397: character token and reconsume the <a href="#current-input-character">current input
2398: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2399:
1.755 mike 2400: </dl><h5 id="end-tag-open-state"><span class="secno">8.2.4.9 </span><dfn>End tag open state</dfn></h5>
1.1 mike 2401:
1.541 mike 2402: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2403:
2404: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2405: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2406: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2407: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2408: state</a>. (Don't emit the token yet; further details will be
2409: filled in before it is emitted.)</dd>
2410:
2411: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2412: <dd>Create a new end tag token, set its tag name to the
2413: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2414: name state</a>. (Don't emit the token yet; further details will
2415: be filled in before it is emitted.)</dd>
1.1 mike 2416:
2417: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2418: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2419: state</a>.</dd>
2420:
2421: <dt>EOF</dt>
2422: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2423: character token and a U+002F SOLIDUS character token. Reconsume
2424: the EOF character in the <a href="#data-state">data state</a>.</dd>
2425:
2426: <dt>Anything else</dt>
2427: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2428: comment state</a>.</dd>
2429:
1.755 mike 2430: </dl><h5 id="tag-name-state"><span class="secno">8.2.4.10 </span><dfn>Tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2431:
2432: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2433:
2434: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2435: <dt>U+000A LINE FEED (LF)</dt>
2436: <dt>U+000C FORM FEED (FF)</dt>
2437: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2438: <dt>U+0020 SPACE</dt>
2439: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2440:
2441: <dt>U+002F SOLIDUS (/)</dt>
2442: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2443:
2444: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2445: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2446: state</a>.</dd>
2447:
2448: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2449: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2450: character</a> (add 0x0020 to the character's code point) to the
2451: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2452: state</a>.</dd>
2453:
2454: <dt>EOF</dt>
2455: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2456: <a href="#data-state">data state</a>.</dd>
2457:
2458: <dt>Anything else</dt>
2459: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2460: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2461:
1.755 mike 2462: </dl><h5 id="rcdata-less-than-sign-state"><span class="secno">8.2.4.11 </span><dfn>RCDATA less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2463: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2464:
2465: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2466:
2467: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2468: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2469: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2470:
2471: <dt>Anything else</dt>
2472: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2473: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2474: state</a>.</dd>
2475:
1.755 mike 2476: </dl><h5 id="rcdata-end-tag-open-state"><span class="secno">8.2.4.12 </span><dfn>RCDATA end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2477: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2478:
2479: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2480:
2481: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2482: <dd>Create a new end tag token, and set its tag name to the
2483: lowercase version of the <a href="#current-input-character">current input character</a> (add
2484: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2485: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2486: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2487: the token yet; further details will be filled in before it is
2488: emitted.)</dd>
2489:
2490: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2491: <dd>Create a new end tag token, and set its tag name to the
2492: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2493: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2494: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2495: the token yet; further details will be filled in before it is
2496: emitted.)</dd>
2497:
2498: <dt>Anything else</dt>
2499: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2500: character token, and reconsume the <a href="#current-input-character">current input
2501: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2502:
1.755 mike 2503: </dl><h5 id="rcdata-end-tag-name-state"><span class="secno">8.2.4.13 </span><dfn>RCDATA end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2504: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2505:
2506: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2507:
2508: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2509: <dt>U+000A LINE FEED (LF)</dt>
2510: <dt>U+000C FORM FEED (FF)</dt>
2511: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2512: <dt>U+0020 SPACE</dt>
2513: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2514: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2515: state</a>. Otherwise, treat it as per the "anything else" entry
2516: below.</dd>
2517:
2518: <dt>U+002F SOLIDUS (/)</dt>
2519: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2520: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2521: state</a>. Otherwise, treat it as per the "anything else" entry
2522: below.</dd>
2523:
2524: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2525: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2526: token</a>, then emit the current tag token and switch to the
2527: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2528: else" entry below.</dd>
2529:
2530: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2531: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2532: character</a> (add 0x0020 to the character's code point) to the
2533: current tag token's tag name. Append the <a href="#current-input-character">current input
2534: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2535: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2536:
2537: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2538: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2539: tag token's tag name. Append the <a href="#current-input-character">current input
2540: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2541: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2542:
2543: <dt>Anything else</dt>
2544: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2545: character token, a character token for each of the characters in
2546: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2547: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2548: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2549:
1.755 mike 2550: </dl><h5 id="rawtext-less-than-sign-state"><span class="secno">8.2.4.14 </span><dfn>RAWTEXT less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2551: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2552:
2553: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2554:
2555: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2556: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2557: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2558:
2559: <dt>Anything else</dt>
2560: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2561: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2562: state</a>.</dd>
2563:
1.755 mike 2564: </dl><h5 id="rawtext-end-tag-open-state"><span class="secno">8.2.4.15 </span><dfn>RAWTEXT end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2565: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2566:
2567: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2568:
2569: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2570: <dd>Create a new end tag token, and set its tag name to the
2571: lowercase version of the <a href="#current-input-character">current input character</a> (add
2572: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2573: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2574: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2575: the token yet; further details will be filled in before it is
2576: emitted.)</dd>
2577:
2578: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2579: <dd>Create a new end tag token, and set its tag name to the
2580: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2581: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2582: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2583: the token yet; further details will be filled in before it is
2584: emitted.)</dd>
2585:
2586: <dt>Anything else</dt>
2587: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2588: character token, and reconsume the <a href="#current-input-character">current input
2589: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2590:
1.755 mike 2591: </dl><h5 id="rawtext-end-tag-name-state"><span class="secno">8.2.4.16 </span><dfn>RAWTEXT end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2592: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2593:
2594: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2595:
2596: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2597: <dt>U+000A LINE FEED (LF)</dt>
2598: <dt>U+000C FORM FEED (FF)</dt>
2599: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2600: <dt>U+0020 SPACE</dt>
2601: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2602: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2603: state</a>. Otherwise, treat it as per the "anything else" entry
2604: below.</dd>
2605:
2606: <dt>U+002F SOLIDUS (/)</dt>
2607: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2608: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2609: state</a>. Otherwise, treat it as per the "anything else" entry
2610: below.</dd>
2611:
2612: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2613: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2614: token</a>, then emit the current tag token and switch to the
2615: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2616: else" entry below.</dd>
2617:
2618: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2619: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2620: character</a> (add 0x0020 to the character's code point) to the
2621: current tag token's tag name. Append the <a href="#current-input-character">current input
2622: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2623: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2624:
2625: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2626: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2627: tag token's tag name. Append the <a href="#current-input-character">current input
2628: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2629: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2630:
2631: <dt>Anything else</dt>
2632: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2633: character token, a character token for each of the characters in
2634: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2635: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2636: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2637:
1.755 mike 2638: </dl><h5 id="script-data-less-than-sign-state"><span class="secno">8.2.4.17 </span><dfn>Script data less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2639:
2640: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2641:
2642: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2643: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2644: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2645:
2646: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2647: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2648: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2649: escape start state</a>.</dd>
2650:
2651: <dt>Anything else</dt>
2652: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2653: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2654: state</a>.</dd>
2655:
1.755 mike 2656: </dl><h5 id="script-data-end-tag-open-state"><span class="secno">8.2.4.18 </span><dfn>Script data end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2657: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2658:
2659: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2660:
2661: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2662: <dd>Create a new end tag token, and set its tag name to the
2663: lowercase version of the <a href="#current-input-character">current input character</a> (add
2664: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2665: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2666: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2667: the token yet; further details will be filled in before it is
2668: emitted.)</dd>
2669:
2670: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2671: <dd>Create a new end tag token, and set its tag name to the
2672: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2673: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2674: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2675: the token yet; further details will be filled in before it is
2676: emitted.)</dd>
2677:
2678: <dt>Anything else</dt>
2679: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2680: character token, and reconsume the <a href="#current-input-character">current input
2681: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2682:
1.755 mike 2683: </dl><h5 id="script-data-end-tag-name-state"><span class="secno">8.2.4.19 </span><dfn>Script data end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2684: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2685:
2686: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2687:
2688: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2689: <dt>U+000A LINE FEED (LF)</dt>
2690: <dt>U+000C FORM FEED (FF)</dt>
2691: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2692: <dt>U+0020 SPACE</dt>
2693: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2694: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2695: state</a>. Otherwise, treat it as per the "anything else" entry
2696: below.</dd>
2697:
2698: <dt>U+002F SOLIDUS (/)</dt>
2699: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2700: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2701: state</a>. Otherwise, treat it as per the "anything else" entry
2702: below.</dd>
2703:
2704: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2705: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2706: token</a>, then emit the current tag token and switch to the
2707: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2708: else" entry below.</dd>
2709:
2710: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2711: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2712: character</a> (add 0x0020 to the character's code point) to the
2713: current tag token's tag name. Append the <a href="#current-input-character">current input
2714: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2715: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2716:
2717: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2718: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2719: tag token's tag name. Append the <a href="#current-input-character">current input
2720: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2721: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2722:
2723: <dt>Anything else</dt>
2724: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2725: character token, a character token for each of the characters in
2726: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2727: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2728: in the <a href="#script-data-state">script data state</a>.</dd>
2729:
1.755 mike 2730: </dl><h5 id="script-data-escape-start-state"><span class="secno">8.2.4.20 </span><dfn>Script data escape start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2731:
2732: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2733:
2734: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2735: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2736: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2737:
2738: <dt>Anything else</dt>
2739: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2740: <a href="#script-data-state">script data state</a>.</dd>
2741:
1.755 mike 2742: </dl><h5 id="script-data-escape-start-dash-state"><span class="secno">8.2.4.21 </span><dfn>Script data escape start dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2743:
2744: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2745:
2746: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2747: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2748: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2749:
2750: <dt>Anything else</dt>
2751: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2752: <a href="#script-data-state">script data state</a>.</dd>
2753:
1.755 mike 2754: </dl><h5 id="script-data-escaped-state"><span class="secno">8.2.4.22 </span><dfn>Script data escaped state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2755:
2756: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2757:
2758: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2759: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2760: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2761:
1.542 mike 2762: <dt>U+003C LESS-THAN SIGN (<)</dt>
2763: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2764: state</a>.</p></dd>
2765:
1.541 mike 2766: <dt>EOF</dt>
2767: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2768: <a href="#data-state">data state</a>.</dd>
2769:
2770: <dt>Anything else</dt>
1.542 mike 2771: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2772: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2773:
1.755 mike 2774: </dl><h5 id="script-data-escaped-dash-state"><span class="secno">8.2.4.23 </span><dfn>Script data escaped dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2775:
2776: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2777:
2778: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2779: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2780: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2781:
1.542 mike 2782: <dt>U+003C LESS-THAN SIGN (<)</dt>
2783: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2784: state</a>.</p></dd>
2785:
1.541 mike 2786: <dt>EOF</dt>
2787: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2788: <a href="#data-state">data state</a>.</dd>
2789:
2790: <dt>Anything else</dt>
1.542 mike 2791: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2792: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2793:
1.755 mike 2794: </dl><h5 id="script-data-escaped-dash-dash-state"><span class="secno">8.2.4.24 </span><dfn>Script data escaped dash dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2795:
2796: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2797:
2798: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2799: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2800: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2801:
1.542 mike 2802: <dt>U+003C LESS-THAN SIGN (<)</dt>
2803: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2804: state</a>.</p></dd>
2805:
1.541 mike 2806: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2807: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2808: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2809:
2810: <dt>EOF</dt>
2811: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2812: <a href="#data-state">data state</a>.</dd>
2813:
2814: <dt>Anything else</dt>
1.542 mike 2815: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2816: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2817:
1.755 mike 2818: </dl><h5 id="script-data-escaped-less-than-sign-state"><span class="secno">8.2.4.25 </span><dfn>Script data escaped less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2819:
2820: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2821:
2822: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2823: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2824: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2825:
2826: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2827: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2828: <a href="#current-input-character">current input character</a> as a character token. Set the
2829: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2830: lowercase version of the <a href="#current-input-character">current input character</a> (add
2831: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2832: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2833: state</a>.</dd>
2834:
2835: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2836: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2837: <a href="#current-input-character">current input character</a> as a character token. Set the
2838: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2839: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2840: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2841: state</a>.</dd>
2842:
2843: <dt>Anything else</dt>
2844: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2845: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2846: escaped state</a>.</dd>
2847:
1.755 mike 2848: </dl><h5 id="script-data-escaped-end-tag-open-state"><span class="secno">8.2.4.26 </span><dfn>Script data escaped end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2849:
2850: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2851:
2852: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2853: <dd>Create a new end tag token, and set its tag name to the
2854: lowercase version of the <a href="#current-input-character">current input character</a> (add
2855: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2856: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2857: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2858: state</a>. (Don't emit the token yet; further details will be
2859: filled in before it is emitted.)</dd>
2860:
2861: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2862: <dd>Create a new end tag token, and set its tag name to the
2863: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2864: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2865: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2866: state</a>. (Don't emit the token yet; further details will be
2867: filled in before it is emitted.)</dd>
2868:
2869: <dt>Anything else</dt>
2870: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2871: character token, and reconsume the <a href="#current-input-character">current input
2872: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2873:
1.755 mike 2874: </dl><h5 id="script-data-escaped-end-tag-name-state"><span class="secno">8.2.4.27 </span><dfn>Script data escaped end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2875:
2876: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2877:
2878: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2879: <dt>U+000A LINE FEED (LF)</dt>
2880: <dt>U+000C FORM FEED (FF)</dt>
2881: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2882: <dt>U+0020 SPACE</dt>
2883: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2884: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2885: state</a>. Otherwise, treat it as per the "anything else" entry
2886: below.</dd>
2887:
2888: <dt>U+002F SOLIDUS (/)</dt>
2889: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2890: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2891: state</a>. Otherwise, treat it as per the "anything else" entry
2892: below.</dd>
2893:
2894: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2895: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2896: token</a>, then emit the current tag token and switch to the
2897: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2898: else" entry below.</dd>
2899:
2900: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2901: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2902: character</a> (add 0x0020 to the character's code point) to the
2903: current tag token's tag name. Append the <a href="#current-input-character">current input
2904: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2905: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2906:
2907: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2908: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2909: tag token's tag name. Append the <a href="#current-input-character">current input
2910: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2911: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2912:
2913: <dt>Anything else</dt>
2914: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2915: character token, a character token for each of the characters in
2916: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2917: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2918: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2919:
1.755 mike 2920: </dl><h5 id="script-data-double-escape-start-state"><span class="secno">8.2.4.28 </span><dfn>Script data double escape start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2921:
2922: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2923:
2924: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2925: <dt>U+000A LINE FEED (LF)</dt>
2926: <dt>U+000C FORM FEED (FF)</dt>
2927: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2928: <dt>U+0020 SPACE</dt>
2929: <dt>U+002F SOLIDUS (/)</dt>
2930: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2931: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2932: token. If the <var><a href="#temporary-buffer">temporary buffer</a></var> is the string "<code title="">script</code>", then switch to the <a href="#script-data-double-escaped-state">script data
2933: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2934: data escaped state</a>.</dd>
2935:
2936: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2937: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2938: token. Append the lowercase version of the <a href="#current-input-character">current input
2939: character</a> (add 0x0020 to the character's code point) to the
2940: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2941: escape start state</a>.</dd>
2942:
2943: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2944: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2945: token. Append the <a href="#current-input-character">current input character</a> to the
2946: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2947: escape start state</a>.</dd>
2948:
2949: <dt>Anything else</dt>
2950: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2951: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2952:
1.755 mike 2953: </dl><h5 id="script-data-double-escaped-state"><span class="secno">8.2.4.29 </span><dfn>Script data double escaped state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2954:
2955: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2956:
2957: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2958: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2959: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2960:
2961: <dt>U+003C LESS-THAN SIGN (<)</dt>
2962: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2963: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2964: state</a>.</p></dd>
2965:
2966: <dt>EOF</dt>
2967: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2968: <a href="#data-state">data state</a>.</dd>
2969:
2970: <dt>Anything else</dt>
2971: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2972: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
2973: state</a>.</dd>
2974:
1.755 mike 2975: </dl><h5 id="script-data-double-escaped-dash-state"><span class="secno">8.2.4.30 </span><dfn>Script data double escaped dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2976:
2977: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2978:
2979: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2980: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2981: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2982:
2983: <dt>U+003C LESS-THAN SIGN (<)</dt>
2984: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2985: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2986: state</a>.</p></dd>
2987:
2988: <dt>EOF</dt>
2989: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2990: <a href="#data-state">data state</a>.</dd>
2991:
2992: <dt>Anything else</dt>
2993: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2994: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2995: state</a>.</dd>
2996:
1.755 mike 2997: </dl><h5 id="script-data-double-escaped-dash-dash-state"><span class="secno">8.2.4.31 </span><dfn>Script data double escaped dash dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2998:
2999: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3000:
3001: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3002: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
3003: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
3004:
3005: <dt>U+003C LESS-THAN SIGN (<)</dt>
3006: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
3007: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
3008: state</a>.</p></dd>
3009:
3010: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3011: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
3012: <a href="#script-data-state">script data state</a>.</dd>
3013:
3014: <dt>EOF</dt>
3015: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3016: <a href="#data-state">data state</a>.</dd>
3017:
3018: <dt>Anything else</dt>
3019: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3020: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
3021: state</a>.</dd>
3022:
1.755 mike 3023: </dl><h5 id="script-data-double-escaped-less-than-sign-state"><span class="secno">8.2.4.32 </span><dfn>Script data double escaped less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3024:
3025: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3026:
3027: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
3028: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
3029: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
3030: double escape end state</a>.</dd>
3031:
3032: <dt>Anything else</dt>
3033: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3034: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
3035:
1.755 mike 3036: </dl><h5 id="script-data-double-escape-end-state"><span class="secno">8.2.4.33 </span><dfn>Script data double escape end state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3037:
3038: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3039:
3040: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3041: <dt>U+000A LINE FEED (LF)</dt>
3042: <dt>U+000C FORM FEED (FF)</dt>
3043: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3044: <dt>U+0020 SPACE</dt>
3045: <dt>U+002F SOLIDUS (/)</dt>
3046: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3047: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3048: token. If the <var><a href="#temporary-buffer">temporary buffer</a></var> is the string "<code title="">script</code>", then switch to the <a href="#script-data-escaped-state">script data
3049: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
3050: double escaped state</a>.</dd>
3051:
3052: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3053: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3054: token. Append the lowercase version of the <a href="#current-input-character">current input
3055: character</a> (add 0x0020 to the character's code point) to the
3056: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3057: escape end state</a>.</dd>
3058:
3059: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
3060: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3061: token. Append the <a href="#current-input-character">current input character</a> to the
3062: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3063: escape end state</a>.</dd>
3064:
3065: <dt>Anything else</dt>
3066: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3067: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 3068:
1.755 mike 3069: </dl><h5 id="before-attribute-name-state"><span class="secno">8.2.4.34 </span><dfn>Before attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3070:
3071: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3072:
3073: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3074: <dt>U+000A LINE FEED (LF)</dt>
3075: <dt>U+000C FORM FEED (FF)</dt>
3076: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3077: <dt>U+0020 SPACE</dt>
3078: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3079:
3080: <dt>U+002F SOLIDUS (/)</dt>
3081: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3082:
3083: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3084: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3085: state</a>.</dd>
3086:
3087: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3088: <dd>Start a new attribute in the current tag token. Set that
3089: attribute's name to the lowercase version of the <a href="#current-input-character">current input
3090: character</a> (add 0x0020 to the character's code point), and its
3091: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
3092: state</a>.</dd>
3093:
3094: <dt>U+0022 QUOTATION MARK (")</dt>
3095: <dt>U+0027 APOSTROPHE (')</dt>
3096: <dt>U+003C LESS-THAN SIGN (<)</dt>
3097: <dt>U+003D EQUALS SIGN (=)</dt>
3098: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3099: entry below.</dd>
3100:
3101: <dt>EOF</dt>
3102: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3103: <a href="#data-state">data state</a>.</dd>
3104:
3105: <dt>Anything else</dt>
3106: <dd>Start a new attribute in the current tag token. Set that
3107: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3108: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3109: state</a>.</dd>
3110:
1.755 mike 3111: </dl><h5 id="attribute-name-state"><span class="secno">8.2.4.35 </span><dfn>Attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3112:
3113: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3114:
3115: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3116: <dt>U+000A LINE FEED (LF)</dt>
3117: <dt>U+000C FORM FEED (FF)</dt>
3118: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3119: <dt>U+0020 SPACE</dt>
3120: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3121:
3122: <dt>U+002F SOLIDUS (/)</dt>
3123: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3124:
3125: <dt>U+003D EQUALS SIGN (=)</dt>
3126: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3127:
3128: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3129: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3130: state</a>.</dd>
3131:
3132: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3133: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3134: character</a> (add 0x0020 to the character's code point) to the
3135: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3136: state</a>.</dd>
3137:
3138: <dt>U+0022 QUOTATION MARK (")</dt>
3139: <dt>U+0027 APOSTROPHE (')</dt>
3140: <dt>U+003C LESS-THAN SIGN (<)</dt>
3141: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3142: entry below.</dd>
3143:
3144: <dt>EOF</dt>
3145: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3146: <a href="#data-state">data state</a>.</dd>
3147:
3148: <dt>Anything else</dt>
1.541 mike 3149: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3150: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3151: state</a>.</dd>
1.1 mike 3152:
3153: </dl><p>When the user agent leaves the attribute name state (and before
3154: emitting the tag token, if appropriate), the complete attribute's
3155: name must be compared to the other attributes on the same token;
3156: if there is already an attribute on the token with the exact same
3157: name, then this is a <a href="#parse-error">parse error</a> and the new
3158: attribute must be dropped, along with the value that gets
3159: associated with it (if any).</p>
3160:
3161:
1.755 mike 3162: <h5 id="after-attribute-name-state"><span class="secno">8.2.4.36 </span><dfn>After attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3163:
3164: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3165:
3166: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3167: <dt>U+000A LINE FEED (LF)</dt>
3168: <dt>U+000C FORM FEED (FF)</dt>
3169: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3170: <dt>U+0020 SPACE</dt>
3171: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3172:
3173: <dt>U+002F SOLIDUS (/)</dt>
3174: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3175:
3176: <dt>U+003D EQUALS SIGN (=)</dt>
3177: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3178:
3179: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3180: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3181: state</a>.</dd>
3182:
3183: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3184: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3185: attribute's name to the lowercase version of the <a href="#current-input-character">current
3186: input character</a> (add 0x0020 to the character's code point),
3187: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3188: name state</a>.</dd>
1.1 mike 3189:
3190: <dt>U+0022 QUOTATION MARK (")</dt>
3191: <dt>U+0027 APOSTROPHE (')</dt>
3192: <dt>U+003C LESS-THAN SIGN (<)</dt>
3193: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3194: entry below.</dd>
3195:
3196: <dt>EOF</dt>
3197: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3198: <a href="#data-state">data state</a>.</dd>
3199:
3200: <dt>Anything else</dt>
3201: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3202: attribute's name to the <a href="#current-input-character">current input character</a>, and
3203: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3204: state</a>.</dd>
3205:
1.755 mike 3206: </dl><h5 id="before-attribute-value-state"><span class="secno">8.2.4.37 </span><dfn>Before attribute value state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3207:
3208: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3209:
3210: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3211: <dt>U+000A LINE FEED (LF)</dt>
3212: <dt>U+000C FORM FEED (FF)</dt>
3213: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3214: <dt>U+0020 SPACE</dt>
3215: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3216:
3217: <dt>U+0022 QUOTATION MARK (")</dt>
3218: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3219:
3220: <dt>U+0026 AMPERSAND (&)</dt>
3221: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3222: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3223:
3224: <dt>U+0027 APOSTROPHE (')</dt>
3225: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3226:
3227: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3228: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3229: the <a href="#data-state">data state</a>.</dd>
3230:
3231: <dt>U+003C LESS-THAN SIGN (<)</dt>
3232: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3233: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3234: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3235: entry below.</dd>
3236:
3237: <dt>EOF</dt>
3238: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3239: <a href="#data-state">data state</a>.</dd>
3240:
3241: <dt>Anything else</dt>
3242: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3243: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3244: state</a>.</dd>
3245:
1.755 mike 3246: </dl><h5 id="attribute-value-double-quoted-state"><span class="secno">8.2.4.38 </span><dfn>Attribute value (double-quoted) state</dfn></h5>
1.1 mike 3247:
3248: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3249:
3250: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3251: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3252: state</a>.</dd>
3253:
3254: <dt>U+0026 AMPERSAND (&)</dt>
3255: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3256: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3257: being U+0022 QUOTATION MARK (").</dd>
3258:
3259: <dt>EOF</dt>
3260: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3261: <a href="#data-state">data state</a>.</dd>
3262:
3263: <dt>Anything else</dt>
1.541 mike 3264: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3265: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3266: (double-quoted) state</a>.</dd>
1.1 mike 3267:
1.755 mike 3268: </dl><h5 id="attribute-value-single-quoted-state"><span class="secno">8.2.4.39 </span><dfn>Attribute value (single-quoted) state</dfn></h5>
1.1 mike 3269:
3270: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3271:
3272: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3273: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3274: state</a>.</dd>
3275:
3276: <dt>U+0026 AMPERSAND (&)</dt>
3277: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3278: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3279: being U+0027 APOSTROPHE (').</dd>
3280:
3281: <dt>EOF</dt>
3282: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3283: <a href="#data-state">data state</a>.</dd>
3284:
3285: <dt>Anything else</dt>
1.541 mike 3286: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3287: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3288: (single-quoted) state</a>.</dd>
1.1 mike 3289:
1.755 mike 3290: </dl><h5 id="attribute-value-unquoted-state"><span class="secno">8.2.4.40 </span><dfn>Attribute value (unquoted) state</dfn></h5>
1.1 mike 3291:
3292: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3293:
3294: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3295: <dt>U+000A LINE FEED (LF)</dt>
3296: <dt>U+000C FORM FEED (FF)</dt>
3297: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3298: <dt>U+0020 SPACE</dt>
3299: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3300:
3301: <dt>U+0026 AMPERSAND (&)</dt>
3302: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3303: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3304: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3305:
3306: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3307: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3308: state</a>.</dd>
3309:
3310: <dt>U+0022 QUOTATION MARK (")</dt>
3311: <dt>U+0027 APOSTROPHE (')</dt>
3312: <dt>U+003C LESS-THAN SIGN (<)</dt>
3313: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3314: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3315: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3316: entry below.</dd>
3317:
3318: <dt>EOF</dt>
3319: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3320: <a href="#data-state">data state</a>.</dd>
3321:
3322: <dt>Anything else</dt>
1.541 mike 3323: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3324: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3325: state</a>.</dd>
3326:
1.755 mike 3327: </dl><h5 id="character-reference-in-attribute-value-state"><span class="secno">8.2.4.41 </span><dfn>Character reference in attribute value state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3328:
3329: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3330:
3331: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3332: the current attribute's value.</p>
3333:
3334: <p>Otherwise, append the returned character token to the current
3335: attribute's value.</p>
3336:
3337: <p>Finally, switch back to the attribute value state that you were
3338: in when were switched into this state.</p>
3339:
3340:
1.755 mike 3341: <h5 id="after-attribute-value-quoted-state"><span class="secno">8.2.4.42 </span><dfn>After attribute value (quoted) state</dfn></h5>
1.1 mike 3342:
3343: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3344:
3345: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3346: <dt>U+000A LINE FEED (LF)</dt>
3347: <dt>U+000C FORM FEED (FF)</dt>
3348: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3349: <dt>U+0020 SPACE</dt>
3350: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3351:
3352: <dt>U+002F SOLIDUS (/)</dt>
3353: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3354:
3355: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3356: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3357: state</a>.</dd>
3358:
3359: <dt>EOF</dt>
3360: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3361: <a href="#data-state">data state</a>.</dd>
3362:
3363: <dt>Anything else</dt>
3364: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3365: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3366:
1.755 mike 3367: </dl><h5 id="self-closing-start-tag-state"><span class="secno">8.2.4.43 </span><dfn>Self-closing start tag state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3368:
3369: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3370:
3371: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3372: <dd>Set the <i>self-closing flag</i> of the current tag
3373: token. Emit the current tag token. Switch to the <a href="#data-state">data
3374: state</a>.</dd>
3375:
3376: <dt>EOF</dt>
3377: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3378: <a href="#data-state">data state</a>.</dd>
3379:
3380: <dt>Anything else</dt>
3381: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3382: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3383:
1.755 mike 3384: </dl><h5 id="bogus-comment-state"><span class="secno">8.2.4.44 </span><dfn>Bogus comment state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3385:
3386: <p>Consume every character up to and including the first U+003E
3387: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3388: whichever comes first. Emit a comment token whose data is the
3389: concatenation of all the characters starting from and including
3390: the character that caused the state machine to switch into the
3391: bogus comment state, up to and including the character immediately
3392: before the last consumed character (i.e. up to the character just
3393: before the U+003E or EOF character). (If the comment was started
3394: by the end of the file (EOF), the token is empty.)</p>
3395:
3396: <p>Switch to the <a href="#data-state">data state</a>.</p>
3397:
3398: <p>If the end of the file was reached, reconsume the EOF
3399: character.</p>
3400:
3401:
1.755 mike 3402: <h5 id="markup-declaration-open-state"><span class="secno">8.2.4.45 </span><dfn>Markup declaration open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3403:
1.588 mike 3404: <p>If the next two characters are both U+002D HYPHEN-MINUS
3405: characters (-), consume those two characters, create a comment token
1.1 mike 3406: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3407: start state</a>.</p>
3408:
3409: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3410: case-insensitive</a> match for the word "DOCTYPE", then consume
3411: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3412:
3413: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
3414: content</a>" and the <a href="#current-node">current node</a> is not an element
1.724 mike 3415: in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a> and the next seven characters are
1.585 mike 3416: an <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "[CDATA[" (the
3417: five uppercase letters "CDATA" with a U+005B LEFT SQUARE BRACKET
3418: character before and after), then consume those characters and
3419: switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3420:
3421: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3422: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3423: consumed, if any, is the first character that will be in the
3424: comment.</p>
3425:
3426:
1.755 mike 3427: <h5 id="comment-start-state"><span class="secno">8.2.4.46 </span><dfn>Comment start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3428:
3429: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3430:
3431: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3432: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3433:
3434: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3435: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3436: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3437: -->
3438:
3439: <dt>EOF</dt>
3440: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3441: the EOF character in the <a href="#data-state">data state</a>.</dd>
3442:
3443: <dt>Anything else</dt>
1.541 mike 3444: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3445: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3446:
1.755 mike 3447: </dl><h5 id="comment-start-dash-state"><span class="secno">8.2.4.47 </span><dfn>Comment start dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3448:
3449: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3450:
3451: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3452: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3453:
3454: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3455: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3456: the <a href="#data-state">data state</a>.</dd>
3457:
3458: <dt>EOF</dt>
3459: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3460: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3461: in comment end state -->
3462:
3463: <dt>Anything else</dt>
1.541 mike 3464: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3465: <a href="#current-input-character">current input character</a> to the comment token's
3466: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3467:
1.755 mike 3468: </dl><h5 id="comment-state"><span class="secno">8.2.4.48 </span><dfn id="comment">Comment state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3469:
3470: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3471:
3472: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3473: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3474:
3475: <dt>EOF</dt>
3476: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3477: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3478: in comment end state -->
3479:
3480: <dt>Anything else</dt>
1.541 mike 3481: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3482: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3483:
1.755 mike 3484: </dl><h5 id="comment-end-dash-state"><span class="secno">8.2.4.49 </span><dfn>Comment end dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3485:
3486: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3487:
3488: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3489: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3490:
3491: <dt>EOF</dt>
3492: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3493: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3494: in comment end state -->
3495:
3496: <dt>Anything else</dt>
1.541 mike 3497: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3498: <a href="#current-input-character">current input character</a> to the comment token's
3499: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3500:
1.755 mike 3501: </dl><h5 id="comment-end-state"><span class="secno">8.2.4.50 </span><dfn>Comment end state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3502:
3503: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3504:
3505: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3506: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3507: state</a>.</dd>
3508:
3509: <dt>U+0009 CHARACTER TABULATION</dt>
3510: <dt>U+000A LINE FEED (LF)</dt>
3511: <dt>U+000C FORM FEED (FF)</dt>
3512: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3513: <dt>U+0020 SPACE</dt>
1.588 mike 3514: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3515: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3516: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3517: state</a>.</dd>
1.1 mike 3518:
3519: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3520: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3521: state</a>.</dd>
3522:
1.333 mike 3523: <dt>U+002D HYPHEN-MINUS (-)</dt>
3524: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3525: character (-) to the comment token's data. Stay in the
1.333 mike 3526: <a href="#comment-end-state">comment end state</a>.</dd>
3527:
1.1 mike 3528: <dt>EOF</dt>
3529: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3530: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
1.724 mike 3531: security reasons: otherwise, hostile user could put a <script type="text/javascript"> in
1.1 mike 3532: a comment e.g. in a blog comment and then DOS the server so that
1.724 mike 3533: the end tag isn't read, and then the commented <script type="text/javascript"> tag would
1.1 mike 3534: be treated as live code -->
3535:
3536: <dt>Anything else</dt>
1.588 mike 3537: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3538: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3539: comment token's data. Switch to the <a href="#comment-state">comment
3540: state</a>.</dd>
1.1 mike 3541:
1.755 mike 3542: </dl><h5 id="comment-end-bang-state"><span class="secno">8.2.4.51 </span><dfn>Comment end bang state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3543:
3544: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3545:
1.333 mike 3546: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.588 mike 3547: <dd>Append two U+002D HYPHEN-MINUS characters (-) and a U+0021
1.464 mike 3548: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3549: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3550:
1.333 mike 3551: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3552: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3553: state</a>.</dd>
3554:
1.1 mike 3555: <dt>EOF</dt>
3556: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3557: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3558: comment in comment end state -->
3559:
3560: <dt>Anything else</dt>
1.588 mike 3561: <dd>Append two U+002D HYPHEN-MINUS characters (-), a U+0021
1.541 mike 3562: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3563: character</a> to the comment token's data. Switch to the
3564: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3565:
1.755 mike 3566: </dl><h5 id="comment-end-space-state"><span class="secno">8.2.4.52 </span><dfn>Comment end space state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3567:
3568: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3569:
1.333 mike 3570: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3571: <dt>U+000A LINE FEED (LF)</dt>
3572: <dt>U+000C FORM FEED (FF)</dt>
3573: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3574: <dt>U+0020 SPACE</dt>
1.541 mike 3575: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3576: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3577:
1.333 mike 3578: <dt>U+002D HYPHEN-MINUS (-)</dt>
3579: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3580:
3581: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3582: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3583: state</a>.</dd>
3584:
1.1 mike 3585: <dt>EOF</dt>
3586: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3587: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3588: comment in comment end state -->
3589:
3590: <dt>Anything else</dt>
1.541 mike 3591: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3592: to the <a href="#comment-state">comment state</a>.</dd>
3593:
1.755 mike 3594: </dl><h5 id="doctype-state"><span class="secno">8.2.4.53 </span><dfn>DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3595:
3596: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3597:
3598: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3599: <dt>U+000A LINE FEED (LF)</dt>
3600: <dt>U+000C FORM FEED (FF)</dt>
3601: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3602: <dt>U+0020 SPACE</dt>
3603: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3604:
3605: <dt>EOF</dt>
3606: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3607: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3608: the EOF character in the <a href="#data-state">data state</a>.</dd>
3609:
3610: <dt>Anything else</dt>
1.608 mike 3611: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
3612: <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
1.1 mike 3613:
1.755 mike 3614: </dl><h5 id="before-doctype-name-state"><span class="secno">8.2.4.54 </span><dfn>Before DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3615:
3616: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3617:
3618: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3619: <dt>U+000A LINE FEED (LF)</dt>
3620: <dt>U+000C FORM FEED (FF)</dt>
3621: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3622: <dt>U+0020 SPACE</dt>
3623: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3624:
3625: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3626: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3627: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3628: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3629: state</a>.</dd>
3630:
1.333 mike 3631: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3632: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3633: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3634: the <a href="#data-state">data state</a>.</dd>
3635:
1.1 mike 3636: <dt>EOF</dt>
3637: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3638: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3639: the EOF character in the <a href="#data-state">data state</a>.</dd>
3640:
3641: <dt>Anything else</dt>
3642: <dd>Create a new DOCTYPE token. Set the token's name to the
3643: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3644: state</a>.</dd>
3645:
1.755 mike 3646: </dl><h5 id="doctype-name-state"><span class="secno">8.2.4.55 </span><dfn>DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3647:
3648: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3649:
3650: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3651: <dt>U+000A LINE FEED (LF)</dt>
3652: <dt>U+000C FORM FEED (FF)</dt>
3653: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3654: <dt>U+0020 SPACE</dt>
3655: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3656:
3657: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3658: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3659: state</a>.</dd>
3660:
3661: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3662: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3663: character</a> (add 0x0020 to the character's code point) to the
3664: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3665: state</a>.</dd>
1.1 mike 3666:
3667: <dt>EOF</dt>
3668: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3669: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3670: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3671:
3672: <dt>Anything else</dt>
1.541 mike 3673: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3674: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3675: state</a>.</dd>
1.1 mike 3676:
1.755 mike 3677: </dl><h5 id="after-doctype-name-state"><span class="secno">8.2.4.56 </span><dfn>After DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3678:
3679: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3680:
3681: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3682: <dt>U+000A LINE FEED (LF)</dt>
3683: <dt>U+000C FORM FEED (FF)</dt>
3684: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3685: <dt>U+0020 SPACE</dt>
3686: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3687:
3688: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3689: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3690: state</a>.</dd>
3691:
3692: <dt>EOF</dt>
3693: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3694: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3695: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3696:
3697: <dt>Anything else</dt>
3698: <dd>
3699:
3700: <p>If the six characters starting from the <a href="#current-input-character">current input
3701: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3702: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3703: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3704:
3705: <p>Otherwise, if the six characters starting from the
3706: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3707: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3708: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3709: keyword state</a>.</p>
1.1 mike 3710:
3711: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3712: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3713: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3714:
3715: </dd>
3716:
1.755 mike 3717: </dl><h5 id="after-doctype-public-keyword-state"><span class="secno">8.2.4.57 </span><dfn>After DOCTYPE public keyword state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3718:
3719: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3720:
3721: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3722: <dt>U+000A LINE FEED (LF)</dt>
3723: <dt>U+000C FORM FEED (FF)</dt>
3724: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3725: <dt>U+0020 SPACE</dt>
3726: <dd>Switch to the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3727: state</a>.</dd>
3728:
1.620 mike 3729: <dt>U+0022 QUOTATION MARK (")</dt>
3730: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3731: identifier to the empty string (not missing), then switch to the
3732: <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier (double-quoted) state</a>.</dd>
3733:
3734: <dt>U+0027 APOSTROPHE (')</dt>
3735: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3736: identifier to the empty string (not missing), then switch to the
3737: <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier (single-quoted) state</a>.</dd>
3738:
3739: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3740: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3741: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3742: token. Switch to the <a href="#data-state">data state</a>.</dd>
3743:
1.444 mike 3744: <dt>EOF</dt>
3745: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3746: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3747: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3748:
3749: <dt>Anything else</dt>
1.620 mike 3750: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3751: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3752: DOCTYPE state</a>.</dd>
1.444 mike 3753:
1.755 mike 3754: </dl><h5 id="before-doctype-public-identifier-state"><span class="secno">8.2.4.58 </span><dfn>Before DOCTYPE public identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3755:
3756: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3757:
3758: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3759: <dt>U+000A LINE FEED (LF)</dt>
3760: <dt>U+000C FORM FEED (FF)</dt>
3761: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3762: <dt>U+0020 SPACE</dt>
3763: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3764:
3765: <dt>U+0022 QUOTATION MARK (")</dt>
3766: <dd>Set the DOCTYPE token's public identifier to the empty string
3767: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3768: (double-quoted) state</a>.</dd>
3769:
3770: <dt>U+0027 APOSTROPHE (')</dt>
3771: <dd>Set the DOCTYPE token's public identifier to the empty string
3772: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3773: (single-quoted) state</a>.</dd>
3774:
3775: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3776: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3777: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3778: token. Switch to the <a href="#data-state">data state</a>.</dd>
3779:
3780: <dt>EOF</dt>
3781: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3782: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3783: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3784:
3785: <dt>Anything else</dt>
3786: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3787: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3788: DOCTYPE state</a>.</dd>
3789:
1.755 mike 3790: </dl><h5 id="doctype-public-identifier-double-quoted-state"><span class="secno">8.2.4.59 </span><dfn>DOCTYPE public identifier (double-quoted) state</dfn></h5>
1.1 mike 3791:
3792: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3793:
3794: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3795: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3796:
3797: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3798: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3799: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3800: token. Switch to the <a href="#data-state">data state</a>.</dd>
3801:
3802: <dt>EOF</dt>
3803: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3804: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3805: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3806:
3807: <dt>Anything else</dt>
3808: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3809: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3810: identifier (double-quoted) state</a>.</dd>
3811:
1.755 mike 3812: </dl><h5 id="doctype-public-identifier-single-quoted-state"><span class="secno">8.2.4.60 </span><dfn>DOCTYPE public identifier (single-quoted) state</dfn></h5>
1.1 mike 3813:
3814: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3815:
3816: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3817: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3818:
3819: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3820: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3821: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3822: token. Switch to the <a href="#data-state">data state</a>.</dd>
3823:
3824: <dt>EOF</dt>
3825: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3826: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3827: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3828:
3829: <dt>Anything else</dt>
3830: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3831: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3832: identifier (single-quoted) state</a>.</dd>
3833:
1.755 mike 3834: </dl><h5 id="after-doctype-public-identifier-state"><span class="secno">8.2.4.61 </span><dfn>After DOCTYPE public identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3835:
3836: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3837:
3838: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3839: <dt>U+000A LINE FEED (LF)</dt>
3840: <dt>U+000C FORM FEED (FF)</dt>
3841: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3842: <dt>U+0020 SPACE</dt>
1.541 mike 3843: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3844: identifiers state</a>.</dd>
1.444 mike 3845:
3846: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3847: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3848: state</a>.</dd>
3849:
3850: <dt>U+0022 QUOTATION MARK (")</dt>
3851: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3852: identifier to the empty string (not missing), then switch to the
3853: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3854:
3855: <dt>U+0027 APOSTROPHE (')</dt>
3856: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3857: identifier to the empty string (not missing), then switch to the
3858: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3859:
3860: <dt>EOF</dt>
3861: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3862: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3863: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3864:
3865: <dt>Anything else</dt>
3866: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3867: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3868: DOCTYPE state</a>.</dd>
3869:
1.755 mike 3870: </dl><h5 id="between-doctype-public-and-system-identifiers-state"><span class="secno">8.2.4.62 </span><dfn>Between DOCTYPE public and system identifiers state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3871:
3872: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3873:
3874: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3875: <dt>U+000A LINE FEED (LF)</dt>
3876: <dt>U+000C FORM FEED (FF)</dt>
3877: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3878: <dt>U+0020 SPACE</dt>
1.541 mike 3879: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3880: state</a>.</dd>
1.444 mike 3881:
3882: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3883: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3884: state</a>.</dd>
1.1 mike 3885:
3886: <dt>U+0022 QUOTATION MARK (")</dt>
3887: <dd>Set the DOCTYPE token's system identifier to the empty string
3888: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3889: (double-quoted) state</a>.</dd>
3890:
3891: <dt>U+0027 APOSTROPHE (')</dt>
3892: <dd>Set the DOCTYPE token's system identifier to the empty string
3893: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3894: (single-quoted) state</a>.</dd>
3895:
3896: <dt>EOF</dt>
3897: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3898: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3899: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3900:
3901: <dt>Anything else</dt>
3902: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3903: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3904: DOCTYPE state</a>.</dd>
3905:
1.755 mike 3906: </dl><h5 id="after-doctype-system-keyword-state"><span class="secno">8.2.4.63 </span><dfn>After DOCTYPE system keyword state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3907:
3908: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3909:
3910: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3911: <dt>U+000A LINE FEED (LF)</dt>
3912: <dt>U+000C FORM FEED (FF)</dt>
3913: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3914: <dt>U+0020 SPACE</dt>
3915: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3916: state</a>.</dd>
3917:
1.620 mike 3918: <dt>U+0022 QUOTATION MARK (")</dt>
3919: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3920: identifier to the empty string (not missing), then switch to the
3921: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3922:
3923: <dt>U+0027 APOSTROPHE (')</dt>
3924: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3925: identifier to the empty string (not missing), then switch to the
3926: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3927:
3928: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3929: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3930: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3931: token. Switch to the <a href="#data-state">data state</a>.</dd>
3932:
1.444 mike 3933: <dt>EOF</dt>
3934: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3935: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3936: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3937:
3938: <dt>Anything else</dt>
1.620 mike 3939: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3940: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3941: DOCTYPE state</a>.</dd>
1.444 mike 3942:
1.755 mike 3943: </dl><h5 id="before-doctype-system-identifier-state"><span class="secno">8.2.4.64 </span><dfn>Before DOCTYPE system identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3944:
3945: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3946:
3947: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3948: <dt>U+000A LINE FEED (LF)</dt>
3949: <dt>U+000C FORM FEED (FF)</dt>
3950: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3951: <dt>U+0020 SPACE</dt>
3952: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3953:
3954: <dt>U+0022 QUOTATION MARK (")</dt>
3955: <dd>Set the DOCTYPE token's system identifier to the empty string
3956: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3957: (double-quoted) state</a>.</dd>
3958:
3959: <dt>U+0027 APOSTROPHE (')</dt>
3960: <dd>Set the DOCTYPE token's system identifier to the empty string
3961: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3962: (single-quoted) state</a>.</dd>
3963:
3964: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3965: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3966: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3967: token. Switch to the <a href="#data-state">data state</a>.</dd>
3968:
3969: <dt>EOF</dt>
3970: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3971: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3972: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3973:
3974: <dt>Anything else</dt>
3975: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3976: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3977: DOCTYPE state</a>.</dd>
3978:
1.755 mike 3979: </dl><h5 id="doctype-system-identifier-double-quoted-state"><span class="secno">8.2.4.65 </span><dfn>DOCTYPE system identifier (double-quoted) state</dfn></h5>
1.1 mike 3980:
3981: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3982:
3983: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 3984: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3985: state</a>.</dd>
1.1 mike 3986:
3987: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3988: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3989: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3990: token. Switch to the <a href="#data-state">data state</a>.</dd>
3991:
3992: <dt>EOF</dt>
3993: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3994: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3995: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3996:
3997: <dt>Anything else</dt>
1.541 mike 3998: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3999: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 4000: identifier (double-quoted) state</a>.</dd>
4001:
1.755 mike 4002: </dl><h5 id="doctype-system-identifier-single-quoted-state"><span class="secno">8.2.4.66 </span><dfn>DOCTYPE system identifier (single-quoted) state</dfn></h5>
1.1 mike 4003:
4004: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4005:
4006: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 4007: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4008: state</a>.</dd>
1.1 mike 4009:
4010: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4011: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4012: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
4013: token. Switch to the <a href="#data-state">data state</a>.</dd>
4014:
4015: <dt>EOF</dt>
4016: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4017: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4018: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4019:
4020: <dt>Anything else</dt>
1.541 mike 4021: <dd>Append the <a href="#current-input-character">current input character</a> to the current
4022: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 4023: identifier (single-quoted) state</a>.</dd>
4024:
1.755 mike 4025: </dl><h5 id="after-doctype-system-identifier-state"><span class="secno">8.2.4.67 </span><dfn>After DOCTYPE system identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4026:
4027: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4028:
4029: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4030: <dt>U+000A LINE FEED (LF)</dt>
4031: <dt>U+000C FORM FEED (FF)</dt>
4032: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4033: <dt>U+0020 SPACE</dt>
1.541 mike 4034: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4035: state</a>.</dd>
1.1 mike 4036:
4037: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4038: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
4039: state</a>.</dd>
4040:
4041: <dt>EOF</dt>
4042: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4043: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4044: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4045:
4046: <dt>Anything else</dt>
4047: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
4048: state</a>. (This does <em>not</em> set the DOCTYPE token's
4049: <i>force-quirks flag</i> to <i>on</i>.)</dd>
4050:
1.755 mike 4051: </dl><h5 id="bogus-doctype-state"><span class="secno">8.2.4.68 </span><dfn>Bogus DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4052:
4053: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4054:
4055: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
4056: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
4057: state</a>.</dd>
4058:
4059: <dt>EOF</dt>
4060: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
4061: <a href="#data-state">data state</a>.</dd>
4062:
4063: <dt>Anything else</dt>
4064: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
4065:
1.755 mike 4066: </dl><h5 id="cdata-section-state"><span class="secno">8.2.4.69 </span><dfn>CDATA section state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4067:
4068: <p>Consume every character up to the next occurrence of the three
4069: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
4070: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
4071: end of the file (EOF), whichever comes first. Emit a series of
4072: character tokens consisting of all the characters consumed except
4073: the matching three character sequence at the end (if one was found
4074: before the end of the file).</p>
4075:
4076: <p>Switch to the <a href="#data-state">data state</a>.</p>
4077:
4078: <p>If the end of the file was reached, reconsume the EOF
4079: character.</p>
4080:
4081:
4082:
1.755 mike 4083: <h5 id="tokenizing-character-references"><span class="secno">8.2.4.70 </span>Tokenizing character references</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4084:
4085: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
4086: reference</dfn>. This definition is used when parsing character
1.299 mike 4087: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 4088: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
4089: state">in attributes</a>.</p>
4090:
4091: <p>The behavior depends on the identity of the next character (the
4092: one immediately after the U+0026 AMPERSAND character):</p>
4093:
4094: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4095: <dt>U+000A LINE FEED (LF)</dt>
4096: <dt>U+000C FORM FEED (FF)</dt>
4097: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4098: <dt>U+0020 SPACE</dt>
4099: <dt>U+003C LESS-THAN SIGN</dt>
4100: <dt>U+0026 AMPERSAND</dt>
4101: <dt>EOF</dt>
4102: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
4103:
4104: <dd>Not a character reference. No characters are consumed, and
4105: nothing is returned. (This is not an error, either.)</dd>
4106:
4107:
4108: <dt>U+0023 NUMBER SIGN (#)</dt>
4109:
4110: <dd>
4111:
4112: <p>Consume the U+0023 NUMBER SIGN.</p>
4113:
4114: <p>The behavior further depends on the character after the U+0023
4115: NUMBER SIGN:</p>
4116:
4117: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
4118: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
4119:
4120: <dd>
4121:
4122: <p>Consume the X.</p>
4123:
4124: <p>Follow the steps below, but using the range of characters
1.464 mike 4125: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
4126: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
4127: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
4128: words, 0-9, A-F, a-f).</p>
1.1 mike 4129:
4130: <p>When it comes to interpreting the number, interpret it as a
4131: hexadecimal number.</p>
4132:
4133: </dd>
4134:
4135:
4136: <dt>Anything else</dt>
4137:
4138: <dd>
4139:
4140: <p>Follow the steps below, but using the range of characters
1.464 mike 4141: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4142:
4143: <p>When it comes to interpreting the number, interpret it as a
4144: decimal number.</p>
4145:
4146: </dd>
4147:
4148: </dl><p>Consume as many characters as match the range of characters
4149: given above.</p>
4150:
4151: <p>If no characters match the range, then don't consume any
4152: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4153: appropriate, the X character). This is a <a href="#parse-error">parse
4154: error</a>; nothing is returned.</p>
4155:
4156: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4157: that too. If it isn't, there is a <a href="#parse-error">parse
4158: error</a>.</p>
4159:
4160: <p>If one or more characters match the range, then take them all
4161: and interpret the string of characters as a number (either
4162: hexadecimal or decimal as appropriate).</p>
4163:
4164: <p>If that number is one of the numbers in the first column of the
4165: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4166: row with that number in the first column, and return a character
4167: token for the Unicode character given in the second column of that
4168: row.</p>
4169:
4170: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4171: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
4172: </td></tr><tr><td>0x0D </td><td>U+000A </td><td>LINE FEED (LF)
1.464 mike 4173: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4174: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4175: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4176: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4177: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4178: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4179: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4180: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4181: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4182: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4183: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4184: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4185: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4186: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4187: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4188: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4189: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4190: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4191: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4192: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4193: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4194: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4195: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4196: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4197: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4198: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4199: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4200: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4201: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4202: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4203: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4204: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4205: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4206: surrogates not allowed; see the comment in the "preprocessing the
4207: input stream" section for details --> or is greater than 0x10FFFF,
4208: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4209: REPLACEMENT CHARACTER.</p>
1.18 mike 4210:
4211: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4212: whose code point is that number.
4213:
4214: <!-- this is the same as the equivalent list in the input stream
4215: section -->
4216: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4217: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4218: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4219: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4220: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4221: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4222: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4223: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4224: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4225: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4226: error</a>.</p>
1.1 mike 4227:
4228: </dd>
4229:
4230:
4231: <dt>Anything else</dt>
4232:
4233: <dd>
4234:
4235: <p>Consume the maximum number of characters possible, with the
4236: consumed characters matching one of the identifiers in the first
4237: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4238: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4239:
4240: <p>If no match can be made, then this is a <a href="#parse-error">parse
4241: error</a>. No characters are consumed, and nothing is
4242: returned.</p>
4243:
1.588 mike 4244: <p>If the last character matched is not a U+003B SEMICOLON
4245: character (;), there is a <a href="#parse-error">parse error</a>.</p>
1.1 mike 4246:
4247: <p>If the character reference is being consumed <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value state">as part of an
4248: attribute</a>, and the last character matched is not a U+003B
1.588 mike 4249: SEMICOLON character (;), and the next character is in the range
4250: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0041 LATIN
4251: CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z, or U+0061 LATIN
4252: SMALL LETTER A to U+007A LATIN SMALL LETTER Z, then, for
4253: historical reasons, all the characters that were matched after the
4254: U+0026 AMPERSAND character (&) must be unconsumed, and nothing
4255: is returned.</p>
1.1 mike 4256:
4257: <p>Otherwise, return a character token for the character
4258: corresponding to the character reference name (as given by the
4259: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4260: table).</p>
4261:
4262: <div class="example">
4263:
4264: <p>If the markup contains <code title="">I'm &notit; I tell
4265: you</code>, the character reference is parsed as "not", as in,
4266: <code title="">I'm ¬it; I tell you</code>. But if the markup
4267: was <code title="">I'm &notin; I tell you</code>, the
4268: character reference would be parsed as "notin;", resulting in
4269: <code title="">I'm ∉ I tell you</code>.</p>
4270:
4271: </div>
4272:
4273: </dd>
4274:
1.266 mike 4275: </dl></div><div class="impl">
4276:
1.363 mike 4277: <!-- v2: One thing that this doesn't define is handling deeply
4278: nested documents. There are compatibility requirements around that:
4279: you can't throw away the elements altogether, consider Tux made only
4280: with opening <font> elements, one per character. Seems that the best
4281: thing to do is to close some formatting elements from the middle of
4282: the stack when you hit a limit, or something. -->
4283:
1.755 mike 4284: <h4 id="tree-construction"><span class="secno">8.2.5 </span><dfn>Tree construction</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4285:
4286: <p>The input to the tree construction stage is a sequence of tokens
4287: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4288: stage is associated with a DOM <code>Document</code> object when a
4289: parser is created. The "output" of this stage consists of
4290: dynamically modifying or extending that document's DOM tree.</p>
4291:
4292: <p>This specification does not define when an interactive user agent
4293: has to render the <code>Document</code> so that it is available to
4294: the user, or when it has to begin accepting user input.</p>
4295:
4296: <p>As each token is emitted from the tokenizer, the user agent must
4297: process the token according to the rules given in the section
4298: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4299:
4300: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4301: character</dfn> into a node, if that node has a child immediately
4302: before where the character is to be inserted, and that child is a
4303: <code>Text</code> node, and that <code>Text</code> node was the last
4304: node that the parser inserted into the document, then the character
4305: must be appended to that <code>Text</code> node; otherwise, a new
4306: <code>Text</code> node whose data is just that character must be
4307: inserted in the appropriate place.</p>
4308:
4309: <div class="example">
4310:
4311: <p>Here are some sample inputs to the parser and the corresponding
4312: number of text nodes that they result in, assuming a user agent
4313: that executes scripts.</p>
4314:
4315: <table><thead><tr><th>Input </th><th>Number of text nodes
4316: </th></tr></thead><tbody><tr><td><pre>A<script>
4317: var script = document.getElementsByTagName('script')[0];
4318: document.body.removeChild(script);
4319: </script>B</pre>
4320: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4321: </td></tr><tr><td><pre>A<script>
4322: var text = document.createTextNode('B');
4323: document.body.appendChild(text);
4324: </script>C</pre>
4325: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4326: </td></tr><tr><td><pre>A<script>
4327: var text = document.getElementsByTagName('script')[0].firstChild;
4328: text.data = 'B';
4329: document.body.appendChild(text);
4330: </script>B</pre>
4331: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4332: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4333: </td><td>Three adjacent text nodes before the table, containing "A", "B", and "CC" respectively. (This is caused by <a href="#foster-parent" title="foster parent">foster parenting</a>.)
4334: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4335: </td><td>Two adjacent text nodes before the table, containing "A" and " B B" (space-B-space-B) respectively. (This is caused by <a href="#foster-parent" title="foster parent">foster parenting</a>.)
4336: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4337: </td><td>Three adjacent text nodes before the table, containing "A", " B" (space-B), and "C" respectively, and one text node inside the table (as a child of a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>) with a single space character. (Space characters separated from non-space characters by non-character tokens are not affected by <a href="#foster-parent" title="foster parent">foster parenting</a>, even if those other tokens then get ignored.)
4338: </td></tr></tbody></table></div>
4339:
4340: <p id="mutation-during-parsing">DOM mutation events must not fire
4341: for changes caused by the UA parsing the document. (Conceptually,
4342: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4343: includes the parsing of any content inserted using <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> and <code title="dom-document-writeln"><a href="embedded-content-0.html#dom-document-writeln">document.writeln()</a></code> calls. <a href="references.html#refsDOMEVENTS">[DOMEVENTS]</a></p>
1.1 mike 4344:
4345: <p class="note">Not all of the tag names mentioned below are
4346: conformant tag names in this specification; many are included to
4347: handle legacy content. They still form part of the algorithm that
4348: implementations are required to implement to claim conformance.</p>
4349:
4350: <p class="note">The algorithm described below places no limit on the
4351: depth of the DOM tree generated, or on the length of tag names,
4352: attribute names, attribute values, text nodes, etc. While
4353: implementors are encouraged to avoid arbitrary limits, it is
4354: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4355: concerns</a> will likely force user agents to impose nesting depth
4356: constraints.</p>
1.1 mike 4357:
4358:
1.755 mike 4359: <h5 id="creating-and-inserting-elements"><span class="secno">8.2.5.1 </span>Creating and inserting elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4360:
4361: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4362: element for the token">create an element for a token</dfn> in a
4363: particular namespace, the UA must create a node implementing the
4364: interface appropriate for the element type corresponding to the tag
4365: name of the token in the given namespace (as given in the
4366: specification that defines that element, e.g. for an <code><a href="text-level-semantics.html#the-a-element">a</a></code>
1.724 mike 4367: element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, this specification
1.1 mike 4368: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4369: the tag name being the name of that element, with the node being in
4370: the given namespace, and with the attributes on the node being those
4371: given in the given token.</p>
4372:
1.724 mike 4373: <p>The interface appropriate for an element in the <a href="infrastructure.html#html-namespace-0">HTML
1.426 mike 4374: namespace</a> that is not defined in this specification (or
4375: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4376: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4377: interface is not defined by that namespace's specification must use
4378: the interface <code>Element</code>.</p>
4379:
4380: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4381: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4382: invoked once the attributes are set. (This initializes the element's
4383: <a href="forms.html#concept-fe-value" title="concept-fe-value">value</a> and <a href="forms.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> based on the element's
4384: attributes.)</p>
4385:
4386: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4387: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
1.724 mike 4388: for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, and then
1.1 mike 4389: append this node to the <a href="#current-node">current node</a>, and push it onto
4390: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4391: <a href="#current-node">current node</a>.</p>
4392:
4393: <p>The steps below may also require that the UA insert an HTML
4394: element in a particular place, in which case the UA must follow the
4395: same steps except that it must insert or append the new node in the
4396: location specified instead of appending it to the <a href="#current-node">current
4397: node</a>. (This happens in particular during the parsing of
4398: tables with invalid content.)</p>
4399:
4400: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4401: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4402: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4403: and the newly created element doesn't have a <code title="attr-fae-form"><a href="forms.html#attr-fae-form">form</a></code> attribute, the user agent must
4404: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4405: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4406: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4407: inserting it wherever it is to be inserted.</p>
4408:
4409: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4410: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4411: for the token</a> in the given namespace, and then append this
4412: node to the <a href="#current-node">current node</a>, and push it onto the
4413: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
1.724 mike 4414: <a href="#current-node">current node</a>. If the newly created element has an <code title="">xmlns</code> attribute in the <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
1.1 mike 4415: whose value is not exactly the same as the element's namespace, that
4416: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4417: element has an <code title="">xmlns:xlink</code> attribute in the
1.724 mike 4418: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="infrastructure.html#xlink-namespace">XLink
1.1 mike 4419: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4420:
4421: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4422: attributes</dfn> for a token, then, if the token has an attribute
4423: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4424:
4425: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4426: attributes</dfn> for a token, then, for each attribute on the token
4427: whose attribute name is one of the ones in the first column of the
4428: following table, change the attribute's name to the name given in
4429: the corresponding cell in the second column. (This fixes the case of
4430: SVG attributes that are not all lowercase.)</p>
4431:
4432: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4433: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4434: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4435: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4436: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4437: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4438: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4439: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4440: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4441: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4442: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4443: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4444: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4445: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4446: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4447: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4448: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4449: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4450: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4451: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4452: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4453: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4454: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4455: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4456: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4457: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4458: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4459: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4460: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4461: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4462: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4463: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4464: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4465: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4466: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4467: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4468: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4469: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4470: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4471: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4472: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4473: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4474: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4475: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4476: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4477: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4478: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4479: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4480: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4481: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4482: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4483: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4484: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4485: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4486: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4487: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4488: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4489: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4490: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4491: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4492: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4493: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4494: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4495: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4496: foreign attributes</dfn> for a token, then, if any of the attributes
4497: on the token match the strings given in the first column of the
4498: following table, let the attribute be a namespaced attribute, with
4499: the prefix being the string given in the corresponding cell in the
4500: second column, the local name being the string given in the
4501: corresponding cell in the third column, and the namespace being the
4502: namespace given in the corresponding cell in the fourth
4503: column. (This fixes the use of namespaced attributes, in particular
4504: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4505: the <span>XML namespace</span></a>.)</p>
4506:
4507: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
1.724 mike 4508: </th></tr></thead><tbody><tr><td> <code title="">xlink:actuate</code> </td><td> <code title="">xlink</code> </td><td> <code title="">actuate</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4509: </td></tr><tr><td> <code title="">xlink:arcrole</code> </td><td> <code title="">xlink</code> </td><td> <code title="">arcrole</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4510: </td></tr><tr><td> <code title="">xlink:href</code> </td><td> <code title="">xlink</code> </td><td> <code title="">href</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4511: </td></tr><tr><td> <code title="">xlink:role</code> </td><td> <code title="">xlink</code> </td><td> <code title="">role</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4512: </td></tr><tr><td> <code title="">xlink:show</code> </td><td> <code title="">xlink</code> </td><td> <code title="">show</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4513: </td></tr><tr><td> <code title="">xlink:title</code> </td><td> <code title="">xlink</code> </td><td> <code title="">title</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4514: </td></tr><tr><td> <code title="">xlink:type</code> </td><td> <code title="">xlink</code> </td><td> <code title="">type</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4515: </td></tr><tr><td> <code title="">xml:base</code> </td><td> <code title="">xml</code> </td><td> <code title="">base</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> <!-- attr-xml-base -->
4516: </td></tr><tr><td> <code title="">xml:lang</code> </td><td> <code title="">xml</code> </td><td> <code title="">lang</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a>
4517: </td></tr><tr><td> <code title="">xml:space</code> </td><td> <code title="">xml</code> </td><td> <code title="">space</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a>
4518: </td></tr><tr><td> <code title="">xmlns</code> </td><td> (none) </td><td> <code title="">xmlns</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
4519: </td></tr><tr><td> <code title="">xmlns:xlink</code> </td><td> <code title="">xmlns</code> </td><td> <code title="">xlink</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
1.91 mike 4520: </td></tr></tbody></table><hr><p>The <dfn id="generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</dfn> and the
1.1 mike 4521: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4522: following steps. These algorithms are always invoked in response to
4523: a start tag token.</p>
4524:
4525: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4526:
1.91 mike 4527: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4528: text element parsing algorithm</a>, switch the tokenizer to the
4529: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4530: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4531: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4532:
4533: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4534: <a href="#insertion-mode">insertion mode</a>.</p>
4535:
1.540 mike 4536: </li><li><p>Then, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 4537:
1.755 mike 4538: </ol><h5 id="closing-elements-that-have-implied-end-tags"><span class="secno">8.2.5.2 </span>Closing elements that have implied end tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4539:
4540: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4541: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4542: <code><a href="semantics.html#the-dd-element">dd</a></code> element, a <code><a href="semantics.html#the-dt-element">dt</a></code> element, an
1.1 mike 4543: <code><a href="semantics.html#the-li-element">li</a></code> element, an <code><a href="forms.html#the-option-element">option</a></code> element, an
4544: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, a <code><a href="semantics.html#the-p-element">p</a></code> element, an
4545: <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element, or an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element, the UA must
4546: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4547: elements</a>.</p>
4548:
4549: <p>If a step requires the UA to generate implied end tags but lists
4550: an element to exclude from the process, then the UA must perform the
4551: above steps as if that element was not in the above list.</p>
4552:
4553:
1.755 mike 4554: <h5 id="foster-parenting"><span class="secno">8.2.5.3 </span>Foster parenting</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4555:
4556: <p>Foster parenting happens when content is misnested in tables.</p>
4557:
4558: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4559: parent">foster parented</dfn>, the node <var title="">node</var>
4560: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4561:
4562: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4563: last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4564: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4565: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4566: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4567: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4568: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4569: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4570: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4571: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4572: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4573: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4574: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4575: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4576:
4577: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4578: last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4579: elements</a>, then <var title="">node</var> must be inserted
4580: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4581: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4582: element</a></i>; otherwise, <var title="">node</var> must be
4583: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4584:
4585:
4586:
1.755 mike 4587: <h5 id="the-initial-insertion-mode"><span class="secno">8.2.5.4 </span>The "<dfn title="insertion mode: initial">initial</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4588:
4589: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4590: mode: initial">initial</a>", tokens must be handled as follows:</p>
4591:
4592: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4593: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4594: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4595: <dd>
4596: <p>Ignore the token.</p>
4597: </dd>
4598:
4599: <dt>A comment token</dt>
4600: <dd>
4601: <p>Append a <code>Comment</code> node to the <code>Document</code>
4602: object with the <code title="">data</code> attribute set to the
4603: data given in the comment token.</p>
4604: </dd>
4605:
4606: <dt>A DOCTYPE token</dt>
4607: <dd>
4608:
4609: <p>If the DOCTYPE token's name is not a
4610: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "<code title="">html</code>", or the token's public identifier is not
4611: missing, or the token's system identifier is neither missing nor a
4612: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4613: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4614: conditions in the following list are matched, then there is a
4615: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4616: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4617: permitted DOCTYPE</dfn>.</p>
4618:
4619: <ul><!-- only things that trigger no-quirks mode and were valid in
1.688 mike 4620: some other spec are allowed in this list --><li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4621: match for the string "<code title="">html</code>", the token's
4622: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4623: "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and
4624: the token's system identifier is either missing or the
1.1 mike 4625: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4626:
1.688 mike 4627: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4628: match for the string "<code title="">html</code>", the token's
4629: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4630: "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and
4631: the token's system identifier is either missing or the
1.1 mike 4632: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4633:
1.688 mike 4634: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4635: match for the string "<code title="">html</code>", the token's
4636: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4637: "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
1.1 mike 4638: and the token's system identifier is the
4639: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4640:
1.688 mike 4641: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4642: match for the string "<code title="">html</code>", the token's
4643: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4644: "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and
4645: the token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
1.1 mike 4646: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4647:
4648: </ul><p>Conformance checkers may, based on the values (including
4649: presence or lack thereof) of the DOCTYPE token's name, public
4650: identifier, or system identifier, switch to a conformance checking
4651: mode for another language (e.g. based on the DOCTYPE token a
4652: conformance checker could recognize that the document is an
1.183 mike 4653: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4654: checker.)</p>
4655:
4656: <p>Append a <code>DocumentType</code> node to the
4657: <code>Document</code> node, with the <code title="">name</code>
4658: attribute set to the name given in the DOCTYPE token, or the empty
4659: string if the name was missing; the <code title="">publicId</code>
4660: attribute set to the public identifier given in the DOCTYPE token,
4661: or the empty string if the public identifier was missing; the
4662: <code title="">systemId</code> attribute set to the system
4663: identifier given in the DOCTYPE token, or the empty string if the
4664: system identifier was missing; and the other attributes specific
4665: to <code>DocumentType</code> objects set to null and empty lists
4666: as appropriate. Associate the <code>DocumentType</code> node with
4667: the <code>Document</code> object so that it is returned as the
4668: value of the <code title="">doctype</code> attribute of the
4669: <code>Document</code> object.</p>
4670:
4671: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4672: one of the conditions in the following list, then set the
4673: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4674:
4675: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
1.688 mike 4676: <li> The name is set to anything other than "<code title="">html</code>" (compared <a href="infrastructure.html#case-sensitive" title="case-sensitive">case-sensitively</a>). </li>
1.1 mike 4677: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4678: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4679: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4680: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4681: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4682: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4683: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4684: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4685: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4686: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4687: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4688: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4689: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4690: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4691: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4692: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4693: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4694: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4695: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4696: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4697: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4698: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4699: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4700: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4701: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4702: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4703: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4704: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4705: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4706: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4707: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4708: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4709: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4710: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4711: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4712: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4713: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4714: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4715: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4716: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4717: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4718: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4719: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4720: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4721: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4722: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4723: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4724: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4725: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4726: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4727: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4728: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4729: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4730: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4731: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4732: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4733: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4734: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4735: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4736: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4737: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4738: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4739: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4740: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4741: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4742: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4743: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4744: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4745: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4746: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4747: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4748: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4749: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4750: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4751: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4752: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4753: in the following list, then set the <code>Document</code> to
4754: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4755:
4756: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4757: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4758: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4759: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
1.688 mike 4760: </ul><p>The system identifier and public identifier strings must be
4761: compared to the values given in the lists above in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
4762: case-insensitive</a> manner. A system identifier whose value is
4763: the empty string is not considered missing for the purposes of the
4764: conditions above.</p>
1.1 mike 4765:
4766: <p>Then, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>".</p>
4767:
4768: </dd>
4769:
4770: <dt>Anything else</dt>
4771: <dd>
4772:
1.727 mike 4773: <p>If the document is <em>not</em> <a href="text-level-semantics.html#an-iframe-srcdoc-document">an <code>iframe</code>
4774: <code title="attr-iframe-srcdoc">srcdoc</code> document</a>,
4775: then this is a <a href="#parse-error">parse error</a>; set the
4776: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
1.1 mike 4777:
1.727 mike 4778: <p>In any case, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>", then
1.1 mike 4779: reprocess the current token.</p>
4780:
4781: </dd>
4782:
1.755 mike 4783: </dl><h5 id="the-before-html-insertion-mode"><span class="secno">8.2.5.5 </span>The "<dfn title="insertion mode: before html">before html</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4784:
4785: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4786: mode: before html">before html</a>", tokens must be handled as follows:</p>
4787:
4788: <dl class="switch"><dt>A DOCTYPE token</dt>
4789: <dd>
4790: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4791: </dd>
4792:
4793: <dt>A comment token</dt>
4794: <dd>
4795: <p>Append a <code>Comment</code> node to the <code>Document</code>
4796: object with the <code title="">data</code> attribute set to the
4797: data given in the comment token.</p>
4798: </dd>
4799:
4800: <dt>A character token that is one of U+0009 CHARACTER
4801: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4802: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4803: <dd>
4804: <p>Ignore the token.</p>
4805: </dd>
4806:
4807: <dt>A start tag whose tag name is "html"</dt>
4808: <dd>
4809:
1.724 mike 4810: <p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML
1.1 mike 4811: namespace</a>. Append it to the <code>Document</code>
4812: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4813: elements</a>.</p>
4814:
4815: <p id="parser-appcache">If the <code>Document</code> is being
4816: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4817: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4818: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4819: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4820: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4821: created element, and if that is successful, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
1.29 mike 4822: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4823: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4824: removed; otherwise, if there is no such attribute or resolving it
4825: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4826: cache selection algorithm</a> with no manifest. The algorithm
4827: must be passed the <code>Document</code> object.</p>
1.1 mike 4828:
4829: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>".</p>
4830:
4831: </dd>
4832:
1.334 mike 4833: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4834: <dd>
4835: <p>Act as described in the "anything else" entry below.</p>
4836: </dd>
4837:
4838: <dt>Any other end tag</dt>
4839: <dd>
4840: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4841: </dd>
4842:
1.1 mike 4843: <dt>Anything else</dt>
4844: <dd>
4845:
1.159 mike 4846: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4847: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4848: of open elements</a>.</p>
4849:
4850: <p>If the <code>Document</code> is being loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a <a href="browsers.html#browsing-context">browsing
4851: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4852: algorithm</a> with no manifest, passing it the
4853: <code>Document</code> object.</p>
4854:
4855: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>", then
4856: reprocess the current token.</p>
4857:
4858: </dd>
4859:
4860: </dl><p>The root element can end up being removed from the
4861: <code>Document</code> object, e.g. by scripts; nothing in particular
4862: happens in such cases, content continues being appended to the nodes
4863: as described in the next section.</p>
4864:
4865:
1.755 mike 4866: <h5 id="the-before-head-insertion-mode"><span class="secno">8.2.5.6 </span>The "<dfn title="insertion mode: before head">before head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4867:
4868: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4869: mode: before head">before head</a>", tokens must be handled as follows:</p>
4870:
4871: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4872: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4873: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4874: <dd>
4875: <p>Ignore the token.</p> <!-- :-( -->
4876: </dd>
4877:
4878: <dt>A comment token</dt>
4879: <dd>
4880: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4881: node</a> with the <code title="">data</code> attribute set to
4882: the data given in the comment token.</p>
4883: </dd>
4884:
4885: <dt>A DOCTYPE token</dt>
4886: <dd>
4887: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4888: </dd>
4889:
4890: <dt>A start tag whose tag name is "html"</dt>
4891: <dd>
4892: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
4893: mode</a>.</p>
4894: </dd>
4895:
4896: <dt>A start tag whose tag name is "head"</dt>
4897: <dd>
4898:
4899: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4900:
4901: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4902: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4903:
4904: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>".</p>
4905:
4906: </dd>
4907:
4908: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4909: <dd>
4910:
4911: <p>Act as if a start tag token with the tag name "head" and no
4912: attributes had been seen, then reprocess the current token.</p>
4913:
4914: </dd>
4915:
4916: <dt>Any other end tag</dt>
4917: <dd>
4918:
4919: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4920:
4921: </dd>
4922:
4923: <dt>Anything else</dt>
4924: <dd>
4925:
4926: <p>Act as if a start tag token with the tag name "head" and no
4927: attributes had been seen, then reprocess the current
4928: token.</p>
4929:
4930: </dd>
4931:
1.755 mike 4932: </dl><h5 id="parsing-main-inhead"><span class="secno">8.2.5.7 </span>The "<dfn title="insertion mode: in head">in head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4933:
4934: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4935: mode: in head">in head</a>", tokens must be handled as follows:</p>
4936:
4937: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4938: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4939: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4940: <dd>
4941: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4942: the <a href="#current-node">current node</a>.</p>
4943: </dd>
4944:
4945: <dt>A comment token</dt>
4946: <dd>
4947: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4948: node</a> with the <code title="">data</code> attribute set to
4949: the data given in the comment token.</p>
4950: </dd>
4951:
4952: <dt>A DOCTYPE token</dt>
4953: <dd>
4954: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4955: </dd>
4956:
4957: <dt>A start tag whose tag name is "html"</dt>
4958: <dd>
4959: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
4960: mode</a>.</p>
4961: </dd>
4962:
4963: <dt>A start tag whose tag name is one of: "base", "command",
4964: "link"</dt>
4965: <dd>
4966:
4967: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4968: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4969: elements</a>.</p>
4970:
4971: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4972: token's <i>self-closing flag</i></a>, if it is set.</p>
4973:
4974: </dd>
4975:
4976: <dt>A start tag whose tag name is "meta"</dt>
4977: <dd>
4978:
4979: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4980: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4981: elements</a>.</p>
4982:
4983: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4984: token's <i>self-closing flag</i></a>, if it is set.</p>
4985:
4986: <p id="meta-charset-during-parse">If the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute, and its
4987: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4988: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4989: encoding</a> to the encoding given by the value of the
4990: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4991:
4992: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4993: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4994: Content-Type</a> to its value returns a supported encoding
4995: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4996: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4997: encoding</a> to the encoding <var title="">encoding</var>.</p>
4998:
4999: </dd>
5000:
5001: <dt>A start tag whose tag name is "title"</dt>
5002: <dd>
5003: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
5004: </dd>
5005:
5006: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
5007: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
5008: <dd>
1.91 mike 5009: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 5010: </dd>
5011:
5012: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
5013: <dd>
5014:
5015: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5016:
5017: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
5018: noscript</a>".</p>
5019:
5020: </dd>
5021:
5022: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
5023: <dd>
5024:
5025: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
1.724 mike 5026: <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</p></li>
1.1 mike 5027:
5028: <li>
5029:
5030: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
5031:
5032: <p class="note">This ensures that, if the script is external,
1.159 mike 5033: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 5034: calls in the script will execute in-line, instead of blowing the
5035: document away, as would happen in most other cases. It also
5036: prevents the script from executing until the end tag is
5037: seen.</p>
5038:
5039: </li>
5040:
5041: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
5042: fragment parsing algorithm</a>, then mark the
1.484 mike 5043: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
5044: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 5045:
5046: <li><p>Append the new element to the <a href="#current-node">current node</a>
5047: and push it onto the <a href="#stack-of-open-elements">stack of open
5048: elements</a>.</p></li>
5049:
1.541 mike 5050: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
5051: state</a>.</p></li>
1.1 mike 5052:
5053: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
5054: <a href="#insertion-mode">insertion mode</a>.</p>
5055:
1.540 mike 5056: </li><li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 5057:
5058: </ol></dd>
5059:
5060: <dt>An end tag whose tag name is "head"</dt>
5061: <dd>
5062:
5063: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 5064: <code><a href="semantics.html#the-head-element-0">head</a></code> element) off the <a href="#stack-of-open-elements">stack of open
1.1 mike 5065: elements</a>.</p>
5066:
5067: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-head-insertion-mode" title="insertion mode: after head">after head</a>".</p>
5068:
5069: </dd>
5070:
5071: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5072: <dd>
5073: <p>Act as described in the "anything else" entry below.</p>
5074: </dd>
5075:
5076: <dt>A start tag whose tag name is "head"</dt>
5077: <dt>Any other end tag</dt>
5078: <dd>
5079: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5080: </dd>
5081:
5082: <dt>Anything else</dt>
5083: <dd>
5084:
5085: <!-- can't get here with an EOF and a fragment case -->
5086:
5087: <p>Act as if an end tag token with the tag name "head" had
5088: been seen, and reprocess the current token.</p>
5089:
5090: </dd>
5091:
1.755 mike 5092: </dl><h5 id="parsing-main-inheadnoscript"><span class="secno">8.2.5.8 </span>The "<dfn title="insertion mode: in head noscript">in head noscript</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5093:
5094: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
5095: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
5096:
5097: <dl class="switch"><dt>A DOCTYPE token</dt>
5098: <dd>
5099: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5100: </dd>
5101:
5102: <dt>A start tag whose tag name is "html"</dt>
5103: <dd>
5104: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
5105: mode</a>.</p>
5106: </dd>
5107:
5108: <dt>An end tag whose tag name is "noscript"</dt>
5109: <dd>
5110:
5111: <p>Pop the <a href="#current-node">current node</a> (which will be a
5112: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
5113: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 5114: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 5115:
5116: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>".</p>
5117:
5118: </dd>
5119:
5120: <dt>A character token that is one of U+0009 CHARACTER
5121: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5122: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5123: <dt>A comment token</dt>
5124: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
5125: <dd>
5126: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5127: mode</a>.</p>
5128: </dd>
5129:
5130: <dt>An end tag whose tag name is "br"</dt>
5131: <dd>
5132: <p>Act as described in the "anything else" entry below.</p>
5133: </dd>
5134:
5135: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5136: <dt>Any other end tag</dt>
5137: <dd>
5138: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5139: </dd>
5140:
5141: <dt>Anything else</dt>
5142: <dd>
5143:
5144: <!-- can't get here with an EOF and a fragment case -->
5145:
5146: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5147: name "noscript" had been seen and reprocess the current
5148: token.</p>
5149:
5150: </dd>
5151:
1.755 mike 5152: </dl><h5 id="the-after-head-insertion-mode"><span class="secno">8.2.5.9 </span>The "<dfn title="insertion mode: after head">after head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5153:
5154: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5155: mode: after head">after head</a>", tokens must be handled as follows:</p>
5156:
5157: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5158: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5159: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5160: <dd>
5161: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5162: the <a href="#current-node">current node</a>.</p>
5163: </dd>
5164:
5165: <dt>A comment token</dt>
5166: <dd>
5167: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5168: node</a> with the <code title="">data</code> attribute set to
5169: the data given in the comment token.</p>
5170: </dd>
5171:
5172: <dt>A DOCTYPE token</dt>
5173: <dd>
5174: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5175: </dd>
5176:
5177: <dt>A start tag whose tag name is "html"</dt>
5178: <dd>
5179: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
5180: mode</a>.</p>
5181: </dd>
5182:
5183: <dt>A start tag whose tag name is "body"</dt>
5184: <dd>
5185:
5186: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5187:
5188: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5189:
5190: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
5191:
5192: </dd>
5193:
5194: <dt>A start tag whose tag name is "frameset"</dt>
5195: <dd>
5196:
5197: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5198:
5199: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>".</p>
5200:
5201: </dd>
5202:
5203: <dt>A start tag token whose tag name is one of: "base", "link",
5204: "meta", "noframes", "script", "style", "title"</dt>
5205: <dd>
5206:
5207: <p><a href="#parse-error">Parse error</a>.</p>
5208:
5209: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5210: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5211:
5212: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5213: mode</a>.</p>
5214:
5215: <p>Remove the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> from the <a href="#stack-of-open-elements">stack
5216: of open elements</a>.</p>
5217:
5218: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5219: pointer</a> cannot be null at this point.</p>
5220:
5221: </dd>
5222:
5223: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5224: <dd>
5225: <p>Act as described in the "anything else" entry below.</p>
5226: </dd>
5227:
5228: <dt>A start tag whose tag name is "head"</dt>
5229: <dt>Any other end tag</dt>
5230: <dd>
5231: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5232: </dd>
5233:
5234: <dt>Anything else</dt>
5235: <dd>
5236: <p>Act as if a start tag token with the tag name "body" and no
5237: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5238: flag</a> back to "ok", and then reprocess the current
5239: token.</p>
5240: </dd>
5241:
1.755 mike 5242: </dl><h5 id="parsing-main-inbody"><span class="secno">8.2.5.10 </span>The "<dfn title="insertion mode: in body">in body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5243:
5244: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5245: mode: in body">in body</a>", tokens must be handled as follows:</p>
5246:
5247: <dl class="switch"><dt>A character token</dt>
5248: <dd>
5249:
5250: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5251: any.</p>
5252:
5253: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5254: character</a> into the <a href="#current-node">current node</a>.</p>
5255:
5256: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5257: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5258: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5259: flag</a> to "not ok".</p>
5260:
5261: </dd>
5262:
5263: <dt>A comment token</dt>
5264: <dd>
5265: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5266: node</a> with the <code title="">data</code> attribute set to
5267: the data given in the comment token.</p>
5268: </dd>
5269:
5270: <dt>A DOCTYPE token</dt>
5271: <dd>
5272: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5273: </dd>
5274:
5275: <dt>A start tag whose tag name is "html"</dt>
5276: <dd>
5277: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5278: check to see if the attribute is already present on the top
5279: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5280: add the attribute and its corresponding value to that element.</p>
5281: </dd>
5282:
5283: <dt>A start tag token whose tag name is one of: "base", "command",
5284: "link", "meta", "noframes", "script", "style", "title"</dt>
5285: <dd>
5286: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5287: mode</a>.</p>
5288: </dd>
5289:
5290: <dt>A start tag whose tag name is "body"</dt>
5291: <dd>
5292:
5293: <p><a href="#parse-error">Parse error</a>.</p>
5294:
5295: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5296: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5297: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5298: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5299:
5300: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5301: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5302: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5303: elements</a>. If it is not, add the attribute and its
5304: corresponding value to that element.</p>
5305:
5306: </dd>
5307:
5308: <dt>A start tag whose tag name is "frameset"</dt>
5309: <dd>
5310:
5311: <p><a href="#parse-error">Parse error</a>.</p>
5312:
5313: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5314: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5315: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5316: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5317:
5318: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5319: the token.</p>
5320:
5321: <p>Otherwise, run the following steps:</p>
5322:
5323: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5324: elements</a> from its parent node, if it has one.</p></li>
5325:
5326: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5327: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5328: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5329:
5330: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5331: token.</p></li>
5332:
5333: <li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>".</p>
5334:
5335: </li></ol></dd>
5336:
5337: <dt>An end-of-file token</dt>
5338: <dd>
5339:
5340: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5341: that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a <code><a href="semantics.html#the-dt-element">dt</a></code>
5342: element, an <code><a href="semantics.html#the-li-element">li</a></code> element, a <code><a href="semantics.html#the-p-element">p</a></code> element, a
1.1 mike 5343: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, a <code><a href="tabular-data.html#the-td-element">td</a></code> element, a
5344: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, a <code><a href="tabular-data.html#the-th-element">th</a></code> element, a
5345: <code><a href="tabular-data.html#the-thead-element">thead</a></code> element, a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, the
1.159 mike 5346: <code><a href="semantics.html#the-body-element-0">body</a></code> element, or the <code><a href="semantics.html#the-html-element-0">html</a></code> element, then
1.1 mike 5347: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5348: fragment cases) -->
1.1 mike 5349:
5350: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5351:
5352: </dd>
5353:
5354: <dt>An end tag whose tag name is "body"</dt>
5355: <dd>
5356:
5357: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have a <code>body</code> element
5358: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5359: token.</p>
5360:
5361: <!-- if we get here, the insertion mode here is forcibly "in
5362: body". -->
5363:
5364: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5365: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5366: <code><a href="semantics.html#the-dt-element">dt</a></code> element, an <code><a href="semantics.html#the-li-element">li</a></code> element, an
5367: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, an <code><a href="forms.html#the-option-element">option</a></code> element, a
5368: <code><a href="semantics.html#the-p-element">p</a></code> element, an <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element, an
5369: <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element, a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, a
5370: <code><a href="tabular-data.html#the-td-element">td</a></code> element, a <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, a
5371: <code><a href="tabular-data.html#the-th-element">th</a></code> element, a <code><a href="tabular-data.html#the-thead-element">thead</a></code> element, a
1.159 mike 5372: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, the <code><a href="semantics.html#the-body-element-0">body</a></code> element, or the
5373: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 5374: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5375: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5376: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5377:
5378: <!-- If we ever change the frameset-ok flag to an insertion mode,
5379: then we'd have to somehow keep track of its state when we switch
5380: to after-body. -->
5381:
5382: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterbody" title="insertion mode: after body">after body</a>".</p>
5383:
5384: </dd>
5385:
5386: <dt>An end tag whose tag name is "html"</dt>
5387: <dd>
5388:
5389: <p>Act as if an end tag with tag name "body" had been seen,
5390: then, if that token wasn't ignored, reprocess the current
5391: token.</p>
5392:
5393: </dd>
5394:
5395: <!-- start tags for non-phrasing flow content elements -->
5396:
5397: <!-- the normal ones -->
5398: <dt>A start tag whose tag name is one of: "address", "article",
1.683 mike 5399: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5400: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5401: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5402: <dd>
5403:
5404: <!-- As of May 2008 this doesn't match any browser exactly, but is
5405: as close to what IE does as I can get without doing the non-tree
5406: DOM nonsense, and thus should actually afford better compatibility
5407: when implemented by the other browsers. -->
5408:
5409: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5410: an element in scope">has a <code>p</code> element in
5411: scope</a>, then act as if an end tag with the tag name
5412: "p" had been seen.</p>
5413:
5414: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5415:
5416: </dd>
5417:
5418: <!-- as normal, but close h1-h6 if it's the current node -->
5419: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5420: "h5", "h6"</dt>
5421: <dd>
5422:
5423: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5424: an element in scope">has a <code>p</code> element in
5425: scope</a>, then act as if an end tag with the tag name
5426: "p" had been seen.</p>
5427:
5428: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5429: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5430: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5431: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5432: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5433:
5434: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5435:
5436: </dd>
5437:
5438: <!-- as normal, but drops leading newline -->
5439: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5440: <dd>
5441:
5442: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5443: an element in scope">has a <code>p</code> element in
5444: scope</a>, then act as if an end tag with the tag name
5445: "p" had been seen.</p>
5446:
5447: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5448:
5449: <p>If the next token is a U+000A LINE FEED (LF) character
5450: token, then ignore that token and move on to the next
5451: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5452: ignored as an authoring convenience.)</p>
5453:
5454: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5455:
5456: </dd>
5457:
5458: <!-- as normal, but interacts with the form element pointer -->
5459: <dt>A start tag whose tag name is "form"</dt>
5460: <dd>
5461:
5462: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5463: pointer</a> is not null, then this is a <a href="#parse-error">parse
5464: error</a>; ignore the token.</p>
5465:
5466: <p>Otherwise:</p>
5467:
5468: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5469: an element in scope">has a <code>p</code> element in
5470: scope</a>, then act as if an end tag with the tag name
5471: "p" had been seen.</p>
5472:
5473: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5474: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5475: point to the element created.</p>
5476:
5477: </dd>
5478:
5479: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5480: <dt>A start tag whose tag name is "li"</dt>
5481: <dd>
5482:
5483: <p>Run the following algorithm:</p>
5484:
5485: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5486:
5487: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5488: node</a> (the bottommost node of the stack).</p></li>
5489:
1.578 mike 5490: <li><p><i>Loop</i>: If <var title="">node</var> is an
5491: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5492: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5493:
1.578 mike 5494: <li><p>If <var title="">node</var> is not in the
1.1 mike 5495: <a href="#formatting">formatting</a> category, and is not in the
5496: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5497: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="semantics.html#the-div-element">div</a></code>, or <code><a href="semantics.html#the-p-element">p</a></code>
1.1 mike 5498: element, then jump to the last step.</p></li> <!-- an element
5499: <foo> is in this list if the following markup:
5500:
5501: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5502:
5503: ...results in the second <li> not being (in any way) a descendant
5504: of the first <li>, or if <foo> is a formatting element that gets
5505: reopened later. -->
5506:
5507: <li><p>Otherwise, set <var title="">node</var> to the previous
5508: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5509: the step labeled <i>loop</i>.</p></li>
5510:
5511: <li>
5512:
5513: <p>This is the last step.</p>
5514:
5515: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5516: an element in scope">has a <code>p</code> element in
5517: scope</a>, then act as if an end tag with the tag name
5518: "p" had been seen.</p>
5519:
5520: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5521: token.</p>
5522:
5523: </li>
5524:
5525: </ol></dd>
5526:
5527: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5528: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5529: <dd>
5530:
5531: <p>Run the following algorithm:</p>
5532:
5533: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5534:
5535: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5536: node</a> (the bottommost node of the stack).</p></li>
5537:
5538: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5539: <code><a href="semantics.html#the-dd-element">dd</a></code> or <code><a href="semantics.html#the-dt-element">dt</a></code> element, then act as if an end
5540: tag with the same tag name as <var title="">node</var> had been
5541: seen, then jump to the last step.</p></li>
1.1 mike 5542:
5543: <li><p>If <var title="">node</var> is not in the
5544: <a href="#formatting">formatting</a> category, and is not in the
5545: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5546: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="semantics.html#the-div-element">div</a></code>, or <code><a href="semantics.html#the-p-element">p</a></code>
1.1 mike 5547: element, then jump to the last step.</p></li> <!-- an element
5548: <foo> is in this list if the following markup:
5549:
5550: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5551:
5552: ...results in the second <dt> not being (in any way) a descendant
5553: of the first <dt>, or if <foo> is a formatting element that gets
5554: reopened later. -->
5555:
5556: <li><p>Otherwise, set <var title="">node</var> to the previous
5557: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5558: the step labeled <i>loop</i>.</p></li>
5559:
5560: <li>
5561:
5562: <p>This is the last step.</p>
5563:
5564: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5565: an element in scope">has a <code>p</code> element in
5566: scope</a>, then act as if an end tag with the tag name
5567: "p" had been seen.</p>
5568:
5569: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5570: token.</p>
5571:
5572: </li>
5573:
5574: </ol></dd>
5575:
5576: <!-- same as normal, but effectively ends parsing -->
5577: <dt>A start tag whose tag name is "plaintext"</dt>
5578: <dd>
5579:
5580: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5581: an element in scope">has a <code>p</code> element in
5582: scope</a>, then act as if an end tag with the tag name
5583: "p" had been seen.</p>
5584:
5585: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5586:
1.541 mike 5587: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5588:
1.541 mike 5589: <p class="note">Once a start tag with the tag name "plaintext" has
5590: been seen, that will be the last token ever seen other than
5591: character tokens (and the end-of-file token), because there is no
5592: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5593:
5594: </dd>
5595:
5596: <!-- end tags for non-phrasing flow content elements -->
5597:
5598: <!-- the normal ones -->
5599: <dt>An end tag whose tag name is one of: "address", "article",
1.683 mike 5600: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5601: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5602: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5603: "section", "ul"</dt>
1.1 mike 5604: <dd>
5605:
5606: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5607: with the same tag name as that of the token, then this is a
5608: <a href="#parse-error">parse error</a>; ignore the token.</p>
5609:
5610: <p>Otherwise, run these steps:</p>
5611:
5612: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5613:
5614: <li><p>If the <a href="#current-node">current node</a> is not an element with
5615: the same tag name as that of the token, then this is a
5616: <a href="#parse-error">parse error</a>.</p></li>
5617:
5618: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5619: until an element with the same tag name as the token has been
5620: popped from the stack.</p></li>
5621:
5622: </ol></dd>
5623:
5624: <!-- removes the form element pointer instead of the matching node -->
5625: <dt>An end tag whose tag name is "form"</dt>
5626: <dd>
5627:
5628: <p>Let <var title="">node</var> be the element that the
5629: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5630: to.</p>
5631:
5632: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5633: to null.</p>
5634:
5635: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5636: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5637: scope">have <var title="">node</var> in scope</a>, then this is
5638: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5639:
5640: <p>Otherwise, run these steps:</p>
5641:
5642: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5643:
5644: <li><p>If the <a href="#current-node">current node</a> is not <var title="">node</var>, then this is a <a href="#parse-error">parse
5645: error</a>.</p></li>
5646:
5647: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5648: open elements</a>.</p></li>
5649:
5650: </ol></dd>
5651:
5652: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5653: <dt>An end tag whose tag name is "p"</dt>
5654: <dd>
5655:
5656: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5657: with the same tag name as that of the token, then this is a
5658: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5659: "p" had been seen, then reprocess the current token.</p>
5660:
5661: <p>Otherwise, run these steps:</p>
5662:
5663: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5664: for elements with the same tag name as the token.</p></li>
5665:
5666: <li><p>If the <a href="#current-node">current node</a> is not an element with
5667: the same tag name as that of the token, then this is a
5668: <a href="#parse-error">parse error</a>.</p></li>
5669:
5670: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5671: until an element with the same tag name as the token has been
5672: popped from the stack.</p></li>
5673:
5674: </ol></dd>
5675:
1.234 mike 5676: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5677: <dt>An end tag whose tag name is "li"</dt>
5678: <dd>
5679:
5680: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-list-item-scope" title="has an element in list item scope">have an element in list
5681: item scope</a> with the same tag name as that of the token,
5682: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5683:
5684: <p>Otherwise, run these steps:</p>
5685:
5686: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5687: for elements with the same tag name as the token.</p></li>
5688:
5689: <li><p>If the <a href="#current-node">current node</a> is not an element with
5690: the same tag name as that of the token, then this is a
5691: <a href="#parse-error">parse error</a>.</p></li>
5692:
5693: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5694: until an element with the same tag name as the token has been
5695: popped from the stack.</p></li>
5696:
5697: </ol></dd>
5698:
1.1 mike 5699: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5700: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5701: <dd>
5702:
5703: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5704: with the same tag name as that of the token, then this is a
5705: <a href="#parse-error">parse error</a>; ignore the token.</p>
5706:
5707: <p>Otherwise, run these steps:</p>
5708:
5709: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5710: for elements with the same tag name as the token.</p></li>
5711:
5712: <li><p>If the <a href="#current-node">current node</a> is not an element with
5713: the same tag name as that of the token, then this is a
5714: <a href="#parse-error">parse error</a>.</p></li>
5715:
5716: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5717: until an element with the same tag name as the token has been
5718: popped from the stack.</p></li>
5719:
5720: </ol></dd>
5721:
5722: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5723: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5724: <dd>
5725:
5726: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5727: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5728: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5729:
5730: <p>Otherwise, run these steps:</p>
5731:
5732: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5733:
5734: <li><p>If the <a href="#current-node">current node</a> is not an element with
5735: the same tag name as that of the token, then this is a
5736: <a href="#parse-error">parse error</a>.</p></li>
5737:
5738: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5739: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5740: "h5", or "h6" has been popped from the stack.</p></li>
5741:
5742: </ol></dd>
5743:
5744: <dt>An end tag whose tag name is "sarcasm"</dt>
5745: <dd>
5746: <p>Take a deep breath, then act as described in the "any other end
5747: tag" entry below.</p>
5748: </dd>
5749:
5750: <!-- ADOPTION AGENCY ELEMENTS
5751: Mozilla-only: bdo blink del ins sub sup q
5752: Safari-only: code dfn kbd nobr samp var wbr
5753: Both: a b big em font i s small strike strong tt u -->
5754:
5755: <dt>A start tag whose tag name is "a"</dt>
5756: <dd>
5757:
5758: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5759: contains an element whose tag name is "a" between the end of
5760: the list and the last marker on the list (or the start of the
5761: list if there is no marker on the list), then this is a
5762: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5763: name "a" had been seen, then remove that element from the
5764: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5765: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5766: already remove it (it might not have if the element is not
5767: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5768: scope</a>).</p>
5769:
5770: <p class="example">In the non-conforming stream
5771: <code><a href="a">a<table><a href="b">b</table>x</code>,
5772: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5773: the second one, and the "x" character would be inside a link
5774: to "b", not to "a". This is despite the fact that the outer
5775: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5776: regular <code></a></code> end tag at the start of the table
5777: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5778:
5779: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5780: any.</p>
5781:
5782: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5783: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5784: elements</a>.</p>
5785:
5786: </dd>
5787:
5788: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5789: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5790: <dd>
5791:
5792: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5793: any.</p>
5794:
5795: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5796: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5797: elements</a>.</p>
5798:
5799: </dd>
5800:
5801: <dt>A start tag whose tag name is "nobr"</dt>
5802: <dd>
5803:
5804: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5805: any.</p>
5806:
5807: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5808: element in scope">has a <code>nobr</code> element in scope</a>,
5809: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5810: the tag name "nobr" had been seen, then once again
5811: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5812: any.</p>
5813:
5814: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5815: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5816: elements</a>.</p>
5817:
5818: </dd>
5819:
5820: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5821: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5822: "strike", "strong", "tt", "u"</dt>
5823: <dd>
5824:
5825: <p>Follow these steps:</p>
5826:
5827: <ol><li>
5828:
5829: <p>Let the <var title="">formatting element</var> be the
5830: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5831: elements</a> that:</p>
5832:
5833: <ul><li>is between the end of the list and the last scope
5834: marker in the list, if any, or the start of the list
5835: otherwise, and</li>
5836:
5837: <li>has the same tag name as the token.</li>
5838:
5839: </ul><p>If there is no such node, or, if that node is also in the
5840: <a href="#stack-of-open-elements">stack of open elements</a> but the element is not <a href="#has-an-element-in-scope" title="has an element in scope">in scope</a>, then this is a
5841: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5842: steps.</p>
5843:
5844: <p>Otherwise, if there is such a node, but that node is not
5845: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5846: <a href="#parse-error">parse error</a>; remove the element from the list,
5847: and abort these steps.</p>
5848:
5849: <p>Otherwise, there is a <var title="">formatting
5850: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5851: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5852: element in scope">in scope</a>. If the element is not the
5853: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5854: error</a>. In any case, proceed with the algorithm as
5855: written in the following steps.</p>
5856:
5857: </li>
5858:
5859: <li><p>Let the <var title="">furthest block</var> be the
5860: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5861: is lower in the stack than the <var title="">formatting
5862: element</var>, and is not an element in the
5863: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5864: categories. There might not be one.</p></li>
5865:
5866: <li><p>If there is no <var title="">furthest block</var>,
5867: then the UA must skip the subsequent steps and instead just
5868: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5869: elements</a>, from the <a href="#current-node">current node</a> up to and
5870: including the <var title="">formatting element</var>, and
5871: remove the <var title="">formatting element</var> from the
5872: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5873:
5874: <li><p>Let the <var title="">common ancestor</var> be the element
5875: immediately above the <var title="">formatting element</var> in the
5876: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5877:
5878: <li><p>Let a bookmark note the position of the <var title="">formatting element</var> in the <a href="#list-of-active-formatting-elements">list of active
5879: formatting elements</a> relative to the elements on either
5880: side of it in the list.</p></li>
5881:
5882: <li>
5883:
5884: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5885: <var title="">furthest block</var>. Follow these steps:</p>
5886:
5887: <ol><li>Let <var title="">node</var> be the element immediately
5888: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5889: elements</a>, or if <var title="">node</var> is no longer in
5890: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5891: removed by the next step), the element that was immediately
5892: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5893: elements</a> before <var title="">node</var> was
5894: removed.</li>
1.1 mike 5895:
5896: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5897: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5898: elements</a> and then go back to step 1.</li>
5899:
5900: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5901: in the overall algorithm.</li>
5902:
5903: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5904: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5905: elements</a>.</li>
5906:
5907: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5908: element <var title="">node</var> was created, replace the entry
5909: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5910: formatting elements</a> with an entry for the new element,
5911: replace the entry for <var title="">node</var> in the
5912: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5913: element, and let <var title="">node</var> be the new
5914: element.</li>
5915:
5916: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5917: parent node if any.</li>
5918:
5919: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5920:
5921: <li>Return to step 1 of this inner set of steps.</li>
5922:
5923: </ol></li>
5924:
5925: <li>
5926:
5927: <p>If the <var title="">common ancestor</var> node is a
5928: <code><a href="tabular-data.html#the-table-element">table</a></code>, <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>,
5929: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then,
5930: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5931: node</var> ended up being in the previous step, first removing
5932: it from its previous parent node if any.</p>
5933:
5934: <p>Otherwise, append whatever <var title="">last node</var>
5935: ended up being in the previous step to the <var title="">common
5936: ancestor</var> node, first removing it from its previous parent
5937: node if any.</p>
5938:
5939: </li>
5940:
5941: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5942: <var title="">formatting element</var> was created.</p></li>
5943:
5944: <li><p>Take all of the child nodes of the <var title="">furthest
5945: block</var> and append them to the element created in the last
5946: step.</p></li>
5947:
5948: <li><p>Append that new element to the <var title="">furthest
5949: block</var>.</p></li>
5950:
5951: <li><p>Remove the <var title="">formatting element</var> from the
5952: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5953: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5954: elements</a> at the position of the aforementioned
5955: bookmark.</p></li>
5956:
5957: <li><p>Remove the <var title="">formatting element</var> from the
5958: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5959: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5960: the position of the <var title="">furthest block</var> in that
5961: stack.</p></li>
5962:
5963: <li><p>Jump back to step 1 in this series of steps.</p></li>
5964:
1.334 mike 5965: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5966: to change parents, it has been dubbed the "adoption agency
5967: algorithm" (in contrast with other possible algorithms for dealing
5968: with misnested content, which included the "incest algorithm", the
1.1 mike 5969: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5970:
5971: </dd>
5972:
5973: <dt>A start tag whose tag name is "button"</dt>
5974: <dd>
5975:
5976: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5977: an element in scope">has a <code>button</code> element in
5978: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5979: act as if an end tag with the tag name "button" had been seen,
5980: then reprocess the token.</p>
5981:
5982: <p>Otherwise:</p>
5983:
5984: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5985: any.</p>
5986:
5987: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5988:
5989: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5990: formatting elements</a>.</p>
5991:
5992: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5993:
5994: </dd>
5995:
5996: <dt>A start tag token whose tag name is one of: "applet",
5997: "marquee", "object"</dt>
5998: <dd>
5999:
6000: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6001: any.</p>
6002:
6003: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6004:
6005: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6006: formatting elements</a>.</p>
6007:
6008: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6009:
6010: </dd>
6011:
6012: <dt>An end tag token whose tag name is one of: "applet", "button",
6013: "marquee", "object"</dt>
6014: <dd>
6015:
6016: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
6017: with the same tag name as that of the token, then this is a
6018: <a href="#parse-error">parse error</a>; ignore the token.</p>
6019:
6020: <p>Otherwise, run these steps:</p>
6021:
6022: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6023:
6024: <li><p>If the <a href="#current-node">current node</a> is not an element with
6025: the same tag name as that of the token, then this is a
6026: <a href="#parse-error">parse error</a>.</p></li>
6027:
6028: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
6029: until an element with the same tag name as the token has been
6030: popped from the stack.</p></li>
6031:
6032: <li><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to the
6033: last marker</a>.</li>
6034:
6035: </ol></dd>
6036:
6037: <dt>A start tag whose tag name is "table"</dt>
6038: <dd>
6039:
6040: <p>If the <code>Document</code> is <em>not</em> set to
6041: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
6042: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
6043: <code>p</code> element in scope</a>, then act as if an end tag
6044: with the tag name "p" had been seen.</p> <!-- i hate myself (this
6045: quirk was basically caused by acid2; if i'd realised we could
6046: change the specs when i wrote acid2, we could have avoided having
6047: any parsing-mode quirks) -Hixie -->
6048:
6049: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6050:
6051: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6052:
6053: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6054:
6055: </dd>
6056:
6057: <dt>A start tag whose tag name is one of: "area", "basefont",
1.589 mike 6058: "bgsound", "br", "embed", "img", "input", "keygen", "wbr"</dt>
1.1 mike 6059: <dd>
6060:
6061: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6062: any.</p>
6063:
6064: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6065: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6066: elements</a>.</p>
6067:
6068: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6069: token's <i>self-closing flag</i></a>, if it is set.</p>
6070:
6071: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
1.589 mike 6072: shouldn't really do it for <area>, <basefont>, and <bgsound> -->
1.1 mike 6073:
6074: </dd>
6075:
6076: <dt>A start tag whose tag name is one of: "param", "source"</dt>
6077: <dd>
6078:
6079: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6080: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6081: elements</a>.</p>
6082:
6083: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6084: token's <i>self-closing flag</i></a>, if it is set.</p>
6085:
6086: </dd>
6087:
6088: <dt>A start tag whose tag name is "hr"</dt>
6089: <dd>
6090:
6091: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6092: an element in scope">has a <code>p</code> element in
6093: scope</a>, then act as if an end tag with the tag name
6094: "p" had been seen.</p>
6095:
6096: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6097: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6098: elements</a>.</p>
6099:
6100: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6101: token's <i>self-closing flag</i></a>, if it is set.</p>
6102:
6103: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6104:
6105: </dd>
6106:
6107: <dt>A start tag whose tag name is "image"</dt>
6108: <dd>
6109: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
6110: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
6111: 2005-12, studies showed that around 0.2% of pages used the
6112: <image> element. -->
6113: </dd>
6114:
6115: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
6116: <dd>
6117:
6118: <p><a href="#parse-error">Parse error</a>.</p>
6119:
6120: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
6121: pointer</a> is not null, then ignore the token.</p>
6122:
6123: <p>Otherwise:</p>
6124:
6125: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6126: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6127: purely to reduce the number of errors (we don't care if they
6128: included the /, they're not supposed to be including the tag at
6129: all! -->
6130:
6131: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6132:
6133: <p>If the token has an attribute called "action", set the
6134: <code title="attr-form-action">action</code> attribute on the
6135: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6136: "action" attribute of the token.</p>
6137:
6138: <p>Act as if a start tag token with the tag name "hr" had been
6139: seen.</p>
6140:
6141: <p>Act as if a start tag token with the tag name "label" had been
6142: seen.</p>
6143:
6144: <p>Act as if a stream of character tokens had been seen (see below
6145: for what they should say).</p>
6146:
6147: <p>Act as if a start tag token with the tag name "input" had been
6148: seen, with all the attributes from the "isindex" token except
6149: "name", "action", and "prompt". Set the <code title="attr-fe-name"><a href="forms.html#attr-fe-name">name</a></code> attribute of the resulting
6150: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6151:
6152: <p>Act as if a stream of character tokens had been seen (see
6153: below for what they should say).</p>
6154:
6155: <p>Act as if an end tag token with the tag name "label" had been
6156: seen.</p>
6157:
6158: <p>Act as if a start tag token with the tag name "hr" had been
6159: seen.</p>
6160:
6161: <p>Act as if an end tag token with the tag name "form" had been
6162: seen.</p>
6163:
6164: <p>If the token has an attribute with the name "prompt", then the
6165: first stream of characters must be the same string as given in
6166: that attribute, and the second stream of characters must be
6167: empty. Otherwise, the two streams of character tokens together
6168: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6169: equivalent of "This is a searchable index. Insert your search
6170: keywords here: (input field)" in the user's preferred
6171: language.</p>
6172:
6173: </dd>
6174:
6175: <dt>A start tag whose tag name is "textarea"</dt>
6176: <dd>
6177:
6178: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6179: token.</p></li>
6180:
6181: <li><p>If the next token is a U+000A LINE FEED (LF) character
6182: token, then ignore that token and move on to the next
6183: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6184: ignored as an authoring convenience.)</p></li>
6185:
1.671 mike 6186: <li><p>Switch the tokenizer to the <a href="#rcdata-state">RCDATA
1.541 mike 6187: state</a>.</p></li>
1.1 mike 6188:
6189: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6190: current <a href="#insertion-mode">insertion mode</a>.</p>
6191:
6192: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6193: ok".</p></li>
6194:
1.540 mike 6195: <li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 6196:
6197: </ol></dd>
6198:
6199: <dt>A start tag whose tag name is "xmp"</dt>
6200: <dd>
6201:
1.233 mike 6202: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6203: an element in scope">has a <code>p</code> element in
6204: scope</a>, then act as if an end tag with the tag name
6205: "p" had been seen.</p>
6206:
1.1 mike 6207: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6208: any.</p>
6209:
6210: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6211:
1.91 mike 6212: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6213:
6214: </dd>
6215:
6216: <dt>A start tag whose tag name is "iframe"</dt>
6217: <dd>
6218:
6219: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6220:
1.91 mike 6221: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6222:
6223: </dd>
6224:
6225: <dt>A start tag whose tag name is "noembed"</dt>
6226: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6227: <dd>
6228:
1.91 mike 6229: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6230:
6231: </dd>
6232:
6233: <dt>A start tag whose tag name is "select"</dt>
6234: <dd>
6235:
6236: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6237: any.</p>
6238:
6239: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6240:
6241: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6242:
6243: <p>If the <a href="#insertion-mode">insertion mode</a> is one of <a href="#parsing-main-intable" title="insertion mode: in table">in table</a>", "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>", "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>",
6244: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6245: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6246: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6247: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6248: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6249: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6250: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6251:
6252: </dd>
6253:
6254: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6255: <dd>
6256:
6257: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6258: element in scope">has an <code>option</code> element in
6259: scope</a>, then act as if an end tag with the tag name "option"
6260: had been seen.</p>
6261:
6262: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6263: any.</p>
6264:
6265: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6266:
6267: </dd>
6268:
6269: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6270: <dd>
6271:
6272: <!-- the parsing rules for ruby really don't match IE much at all,
6273: but in practice the markup used is very simple and so strict
6274: compatibility with IE isn't required. For example, as defined
6275: here we get very, very different behaviour than IE for
6276: pathological cases like:
6277:
6278: <ruby><ol><li><p>a<rt>b
6279: <ruby>a<rt>b<p>c
6280:
6281: But in practice most ruby markup falls into these cases:
6282:
6283: <ruby>a<rt>b</ruby>
6284: <ruby>a<rp>b<rt>c<rp>d</ruby>
6285: <ruby>a<rt>b</rt></ruby>
6286: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6287:
6288: -->
6289:
6290: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6291: element in scope">has a <code>ruby</code> element in scope</a>,
6292: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6293: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6294: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6295: node</a> up to the node immediately before the bottommost
6296: <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element on the <a href="#stack-of-open-elements">stack of open
6297: elements</a>.</p>
6298:
6299: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6300:
6301: </dd>
6302:
6303: <dt>An end tag whose tag name is "br"</dt>
6304: <dd>
6305: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6306: the tag name "br" had been seen. Ignore the end tag token.</p>
6307: </dd>
6308:
6309: <dt>A start tag whose tag name is "math"</dt>
6310: <dd>
6311:
6312: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6313: any.</p>
6314:
6315: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6316: fixes the case of MathML attributes that are not all
6317: lowercase.)</p>
6318:
6319: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6320: fixes the use of namespaced attributes, in particular XLink.)</p>
6321:
6322: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6323: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</p>
1.1 mike 6324:
6325: <!-- If we ever change the frameset-ok flag to an insertion mode,
6326: the following change would be implied, except we'd have to do it
6327: even in the face of a self-closed tag:
6328: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6329: -->
6330:
6331: <p>If the token has its <i>self-closing flag</i> set, pop the
6332: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6333: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6334: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6335:
6336: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6337: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6338: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6339: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6340: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6341: foreign content">in foreign content</a>".</p>
6342:
6343: </dd>
6344:
6345: <dt>A start tag whose tag name is "svg"</dt>
6346: <dd>
6347:
6348: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6349: any.</p>
6350:
6351: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6352: the case of SVG attributes that are not all lowercase.)</p>
6353:
6354: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6355: fixes the use of namespaced attributes, in particular XLink in
6356: SVG.)</p>
6357:
6358: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6359: <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</p>
1.1 mike 6360:
6361: <!-- If we ever change the frameset-ok flag to an insertion mode,
6362: the following change would be implied, except we'd have to do it
6363: even in the face of a self-closed tag:
6364: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6365: -->
6366:
6367: <p>If the token has its <i>self-closing flag</i> set, pop the
6368: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6369: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6370: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6371:
6372: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6373: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6374: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6375: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6376: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6377: foreign content">in foreign content</a>".</p>
6378:
6379: </dd>
6380:
6381: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6382: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6383: "thead", "tr"</dt>
6384: <!--<dt>An end tag whose tag name is one of: "area", "base",
6385: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6386: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
1.589 mike 6387: "noframes", "param", "script", "select", "source", "style",
6388: "table", "textarea", "title", "wbr"</dt>-->
1.1 mike 6389: <!--<dt>An end tag whose tag name is "noscript", if the
6390: <span>scripting flag</span> is enabled</dt>-->
6391: <dd>
6392: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6393: <!-- end tags are commented out because since they can never end
6394: up on the stack anyway, the default end tag clause will
6395: automatically handle them. we don't want to have text in the spec
6396: that is just an optimisation, as that detracts from the spec
6397: itself -->
6398: </dd>
6399:
6400: <dt>Any other start tag</dt>
6401: <dd>
6402:
6403: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6404: any.</p>
6405:
6406: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6407:
6408: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6409: element.</p>
6410:
6411: </dd>
6412:
6413: <dt>Any other end tag</dt>
6414: <dd>
6415:
6416: <p>Run the following steps:</p>
6417:
6418: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6419: node</a> (the bottommost node of the stack).</p></li>
6420:
6421: <li><p>If <var title="">node</var> has the same tag name as
6422: the end tag token, then:</p>
6423:
6424: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6425:
6426: <li><p>If the tag name of the end tag token does not match
6427: the tag name of the <a href="#current-node">current node</a>, this is a
6428: <a href="#parse-error">parse error</a>.</p></li>
6429:
6430: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6431: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6432:
6433: </ol></li>
6434:
6435: <li><p>Otherwise, if <var title="">node</var> is in neither the
6436: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6437: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6438: token, and abort these steps.</p></li>
6439:
6440: <li><p>Set <var title="">node</var> to the previous entry in the
6441: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6442:
6443: <li><p>Return to step 2.</p></li>
6444:
6445: </ol></dd>
6446:
1.755 mike 6447: </dl><h5 id="parsing-main-incdata"><span class="secno">8.2.5.11 </span>The "<dfn title="insertion mode: text">text</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6448:
6449: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6450: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6451:
6452: <dl class="switch"><dt>A character token</dt>
6453: <dd>
6454:
6455: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6456: character</a> into the <a href="#current-node">current node</a>.</p>
6457:
6458: </dd>
6459:
6460: <dt>An end-of-file token</dt>
6461: <dd>
6462:
6463: <!-- can't be the fragment case -->
6464: <p><a href="#parse-error">Parse error</a>.</p>
6465:
6466: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6467: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6468: started"</a>.</p>
1.1 mike 6469:
6470: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6471: elements</a>.</p>
6472:
6473: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6474: insertion mode</a> and reprocess the current token.</p>
6475:
6476: </dd>
6477:
6478: <dt>An end tag whose tag name is "script"</dt>
6479: <dd>
6480:
6481: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6482: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6483:
6484: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6485: elements</a>.</p>
6486:
6487: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6488: insertion mode</a>.</p>
6489:
6490: <p>Let the <var title="">old insertion point</var> have the
6491: same value as the current <a href="#insertion-point">insertion point</a>. Let
6492: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6493: input character</a>.</p>
6494:
6495: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6496: one.</p>
6497:
6498: <p><a href="semantics.html#running-a-script" title="running a script">Run</a> the <var title="">script</var>. This might cause some script to execute,
1.159 mike 6499: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6500: to be inserted into the tokenizer</a>, and might cause the
6501: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6502:
6503: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6504: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6505: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6506:
6507: <p>Let the <a href="#insertion-point">insertion point</a> have the value of the <var title="">old insertion point</var>. (In other words, restore the
6508: <a href="#insertion-point">insertion point</a> to its previous value. This value
6509: might be the "undefined" value.)</p>
6510:
6511: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6512: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6513:
6514: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6515:
6516: <dd>
6517:
6518: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6519: processing of any nested invocations of the tokenizer, yielding
6520: control back to the caller. (Tokenization will resume when the
6521: caller returns to the "outer" tree construction stage.)</p>
6522:
6523: <p class="note">The tree construction stage of this particular
6524: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6525: say from a call to <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>.</p>
1.1 mike 6526:
6527: </dd>
6528:
6529:
6530: <dt>Otherwise:</dt>
6531:
6532: <dd>
6533:
6534: <p>Follow these steps:</p>
6535:
1.484 mike 6536: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6537: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6538: parsing-blocking script</a>.</p></li>
6539:
6540: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6541: for this instance of the <a href="#html-parser">HTML parser</a>, such that
1.755 mike 6542: the <a href="web-application-apis.html#event-loop">event loop</a> will not run <a href="web-application-apis.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a>.</p></li>
1.484 mike 6543:
1.755 mike 6544: <li><p><a href="web-application-apis.html#spin-the-event-loop">Spin the event loop</a> until there is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet blocking
1.484 mike 6545: scripts</a> and <var title="">the script</var>'s
6546: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6547:
6548: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6549: for this instance of the <a href="#html-parser">HTML parser</a>, such that
1.755 mike 6550: <a href="web-application-apis.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
1.484 mike 6551: run.</p></li>
1.1 mike 6552:
6553: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6554: <a href="#next-input-character">next input character</a>.</p></li>
6555:
6556: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6557: by one (it should be zero before this step, so this sets it to
6558: one).</p></li>
6559:
1.484 mike 6560: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6561: <var title="">the script</var>.</p></li>
1.1 mike 6562:
6563: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6564: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6565: zero (which it always should be at this point), then set the
6566: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6567:
6568: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6569: again.</p></li>
6570:
1.484 mike 6571: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6572: script</a>, then repeat these steps from step 1.</p></li>
6573:
6574: </ol></dd>
6575:
6576: </dl></dd>
6577:
6578: <dt>Any other end tag</dt>
6579: <dd>
6580:
6581: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6582: elements</a>.</p>
6583:
6584: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6585: insertion mode</a>.</p>
6586:
6587: </dd>
6588:
1.755 mike 6589: </dl><h5 id="parsing-main-intable"><span class="secno">8.2.5.12 </span>The "<dfn title="insertion mode: in table">in table</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6590:
6591: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6592: mode: in table">in table</a>", tokens must be handled as follows:</p>
6593:
6594: <dl class="switch"><dt>A character token</dt>
6595: <dd>
6596:
6597: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6598: be an empty list of tokens.</p>
6599:
6600: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6601: <a href="#insertion-mode">insertion mode</a>.</p>
6602:
6603: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table text</a>" and
6604: reprocess the token.</p>
6605:
6606: </dd>
6607:
6608: <dt>A comment token</dt>
6609: <dd>
6610: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6611: node</a> with the <code title="">data</code> attribute set to
6612: the data given in the comment token.</p>
6613: </dd>
6614:
6615: <dt>A DOCTYPE token</dt>
6616: <dd>
6617: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6618: </dd>
6619:
6620: <dt>A start tag whose tag name is "caption"</dt>
6621: <dd>
6622:
6623: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6624: below.)</p>
6625:
6626: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6627: formatting elements</a>.</p>
6628:
6629: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6630: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6631:
6632: </dd>
6633:
6634: <dt>A start tag whose tag name is "colgroup"</dt>
6635: <dd>
6636:
6637: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6638: below.)</p>
6639:
6640: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6641: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6642: group</a>".</p>
6643:
6644: </dd>
6645:
6646: <dt>A start tag whose tag name is "col"</dt>
6647: <dd>
6648: <p>Act as if a start tag token with the tag name "colgroup"
6649: had been seen, then reprocess the current token.</p>
6650: </dd>
6651:
6652: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6653: <dd>
6654:
6655: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6656: below.)</p>
6657:
6658: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6659: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6660: body</a>".</p>
6661:
6662: </dd>
6663:
6664: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6665: <dd>
6666: <p>Act as if a start tag token with the tag name "tbody" had
6667: been seen, then reprocess the current token.</p>
6668: </dd>
6669:
6670: <dt>A start tag whose tag name is "table"</dt>
6671: <dd>
6672:
6673: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6674: the tag name "table" had been seen, then, if that token wasn't
6675: ignored, reprocess the current token.</p>
6676:
6677: <p class="note">The fake end tag token here can only be
6678: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6679:
6680: </dd>
6681:
6682: <dt>An end tag whose tag name is "table"</dt>
6683: <dd>
6684:
6685: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
6686: scope</a> with the same tag name as the token, this is a
6687: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6688: case</a>)</p>
6689:
6690: <p>Otherwise:</p>
6691:
6692: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6693: element has been popped from the stack.</p>
6694:
6695: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6696:
6697: </dd>
6698:
6699: <dt>An end tag whose tag name is one of: "body", "caption",
6700: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6701: "thead", "tr"</dt>
6702: <dd>
6703: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6704: </dd>
6705:
6706: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6707: <dd>
6708:
6709: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
6710: mode</a>.</p>
6711:
6712: </dd>
6713:
6714: <dt>A start tag whose tag name is "input"</dt>
6715: <dd>
6716:
6717: <p>If the token does not have an attribute with the name "type",
6718: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6719: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6720: else" entry below.</p>
6721:
6722: <p>Otherwise:</p>
6723:
6724: <p><a href="#parse-error">Parse error</a>.</p>
6725:
6726: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6727:
6728: <p>Pop that <code><a href="forms.html#the-input-element">input</a></code> element off the <a href="#stack-of-open-elements">stack of
6729: open elements</a>.</p>
6730:
6731: </dd>
6732:
1.603 mike 6733: <dt>A start tag whose tag name is "form"</dt>
6734: <dd>
6735:
6736: <p><a href="#parse-error">Parse error</a>.</p>
6737:
1.717 mike 6738: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
6739: pointer</a> is not null, ignore the token.</p>
6740:
6741: <p>Otherwise:</p>
6742:
1.603 mike 6743: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6744:
1.637 mike 6745: <p>Pop that <code><a href="forms.html#the-form-element">form</a></code> element off the <a href="#stack-of-open-elements">stack of
1.603 mike 6746: open elements</a>.</p>
6747:
6748: </dd>
6749:
1.721 mike 6750: <!-- "form" end tag falls through to in-body, which does the right thing -->
1.717 mike 6751:
1.1 mike 6752: <dt>An end-of-file token</dt>
6753: <dd>
6754:
6755: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6756: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 6757: error</a>.</p>
6758:
6759: <p class="note">It can only be the <a href="#current-node">current node</a> in
6760: the <a href="#fragment-case">fragment case</a>.</p>
6761:
6762: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6763:
6764: </dd>
6765:
6766: <dt>Anything else</dt>
6767: <dd>
6768:
6769: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6770: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6771: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6772: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6773: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or
6774: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6775: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6776:
6777: </dd>
6778:
6779: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6780: back to a table context</dfn>, it means that the UA must, while
6781: the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-table-element">table</a></code>
1.159 mike 6782: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6783: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6784:
6785: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6786: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 6787: case</a>.</p>
6788:
6789:
6790:
1.755 mike 6791: <h5 id="parsing-main-intabletext"><span class="secno">8.2.5.13 </span>The "<dfn title="insertion mode: in table text">in table text</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6792:
6793: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6794: mode: in table text">in table text</a>", tokens must be handled
6795: as follows:</p>
6796:
6797: <dl class="switch"><dt>A character token</dt>
6798: <dd>
6799:
6800: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6801: tokens</a></var> list.</p>
6802:
6803: </dd>
6804:
6805:
6806: <dt>Anything else</dt>
6807: <dd>
6808:
6809: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6810: tokens</a></var> list are character tokens that are not one of U+0009
6811: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6812: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6813: reprocess those character tokens using the rules given in the
6814: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6815: table">in table</a>" insertion mode.</p>
6816:
6817: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6818: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6819: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6820:
6821: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6822: insertion mode</a> and reprocess the token.</p>
6823:
6824: </dd>
6825:
1.755 mike 6826: </dl><h5 id="parsing-main-incaption"><span class="secno">8.2.5.14 </span>The "<dfn title="insertion mode: in caption">in caption</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6827:
6828: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6829: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6830:
6831: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6832: <dd>
6833:
6834: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
6835: scope</a> with the same tag name as the token, this is a
6836: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6837: case</a>)</p>
6838:
6839: <p>Otherwise:</p>
6840:
6841: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6842:
6843: <p>Now, if the <a href="#current-node">current node</a> is not a
6844: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6845: error</a>.</p>
6846:
6847: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6848: element has been popped from the stack.</p>
6849:
6850: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6851: the last marker</a>.</p>
6852:
6853: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6854:
6855: </dd>
6856:
6857: <dt>A start tag whose tag name is one of: "caption", "col",
6858: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6859: <dt>An end tag whose tag name is "table"</dt>
6860: <dd>
6861:
6862: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6863: name "caption" had been seen, then, if that token wasn't
6864: ignored, reprocess the current token.</p>
6865:
6866: <p class="note">The fake end tag token here can only be
6867: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6868:
6869: </dd>
6870:
6871: <dt>An end tag whose tag name is one of: "body", "col",
6872: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6873: "tr"</dt>
6874: <dd>
6875: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6876: </dd>
6877:
6878: <dt>Anything else</dt>
6879: <dd>
6880: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
6881: mode</a>.</p>
6882: </dd>
6883:
1.755 mike 6884: </dl><h5 id="parsing-main-incolgroup"><span class="secno">8.2.5.15 </span>The "<dfn title="insertion mode: in column group">in column group</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6885:
6886: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6887: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6888:
6889: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6890: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6891: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6892: <dd>
6893: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6894: the <a href="#current-node">current node</a>.</p>
6895: </dd>
6896:
6897: <dt>A comment token</dt>
6898: <dd>
6899: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6900: node</a> with the <code title="">data</code> attribute set to
6901: the data given in the comment token.</p>
6902: </dd>
6903:
6904: <dt>A DOCTYPE token</dt>
6905: <dd>
6906: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6907: </dd>
6908:
6909: <dt>A start tag whose tag name is "html"</dt>
6910: <dd>
6911: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
6912: mode</a>.</p>
6913: </dd>
6914:
6915: <dt>A start tag whose tag name is "col"</dt>
6916: <dd>
6917:
6918: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6919: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6920: elements</a>.</p>
6921:
6922: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6923: token's <i>self-closing flag</i></a>, if it is set.</p>
6924:
6925: </dd>
6926:
6927: <dt>An end tag whose tag name is "colgroup"</dt>
6928: <dd>
6929:
6930: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6931: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 6932: error</a>; ignore the token. (<a href="#fragment-case">fragment
6933: case</a>)</p>
6934:
6935: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6936: a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element) from the <a href="#stack-of-open-elements">stack of open
6937: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6938: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6939:
6940: </dd>
6941:
6942: <dt>An end tag whose tag name is "col"</dt>
6943: <dd>
6944: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6945: </dd>
6946:
6947: <dt>An end-of-file token</dt>
6948: <dd>
6949:
1.159 mike 6950: <p>If the <a href="#current-node">current node</a> is the root <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 6951: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6952: case</a>)</p>
6953:
6954: <p>Otherwise, act as described in the "anything else" entry
6955: below.</p>
6956:
6957: </dd>
6958:
6959: <dt>Anything else</dt>
6960: <dd>
6961:
6962: <p>Act as if an end tag with the tag name "colgroup" had been
6963: seen, and then, if that token wasn't ignored, reprocess the
6964: current token.</p>
6965:
6966: <p class="note">The fake end tag token here can only be
6967: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6968:
6969: </dd>
6970:
1.755 mike 6971: </dl><h5 id="parsing-main-intbody"><span class="secno">8.2.5.16 </span>The "<dfn title="insertion mode: in table body">in table body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6972:
6973: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6974: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6975:
6976: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6977: <dd>
6978:
6979: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6980: context</a>. (See below.)</p>
6981:
6982: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6983: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6984: in row">in row</a>".</p>
6985:
6986: </dd>
6987:
6988: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6989: <dd>
6990: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6991: the tag name "tr" had been seen, then reprocess the current
6992: token.</p>
6993: </dd>
6994:
6995: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6996: "thead"</dt>
6997: <dd>
6998:
6999: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7000: scope</a> with the same tag name as the token, this is a
7001: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7002:
7003: <p>Otherwise:</p>
7004:
7005: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7006: context</a>. (See below.)</p>
7007:
7008: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
7009: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7010: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
7011:
7012: </dd>
7013:
7014: <dt>A start tag whose tag name is one of: "caption", "col",
7015: "colgroup", "tbody", "tfoot", "thead"</dt>
7016: <dt>An end tag whose tag name is "table"</dt>
7017: <dd>
7018:
7019: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7020: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
7021: element in table scope</a>, this is a <a href="#parse-error">parse
7022: error</a>. Ignore the token. (<a href="#fragment-case">fragment
7023: case</a>)</p>
7024:
7025: <p>Otherwise:</p>
7026:
7027: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7028: context</a>. (See below.)</p>
7029:
7030: <p>Act as if an end tag with the same tag name as the
7031: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
7032: been seen, then reprocess the current token.</p>
7033:
7034: </dd>
7035:
7036: <dt>An end tag whose tag name is one of: "body", "caption",
7037: "col", "colgroup", "html", "td", "th", "tr"</dt>
7038: <dd>
7039: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7040: </dd>
7041:
7042: <dt>Anything else</dt>
7043: <dd>
7044: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" <a href="#insertion-mode">insertion
7045: mode</a>.</p>
7046: </dd>
7047:
7048: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
7049: back to a table body context</dfn>, it means that the UA must,
7050: while the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1.159 mike 7051: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 7052: element, pop elements from the <a href="#stack-of-open-elements">stack of open
7053: elements</a>.</p>
7054:
7055: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7056: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 7057: case</a>.</p>
7058:
7059:
1.755 mike 7060: <h5 id="parsing-main-intr"><span class="secno">8.2.5.17 </span>The "<dfn title="insertion mode: in row">in row</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7061:
7062: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
7063: mode: in row">in row</a>", tokens must be handled as follows:</p>
7064:
7065: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
7066: <dd>
7067:
7068: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7069: context</a>. (See below.)</p>
7070:
7071: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
7072: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
7073: in cell">in cell</a>".</p>
7074:
7075: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
7076: formatting elements</a>.</p>
7077:
7078: </dd>
7079:
7080: <dt>An end tag whose tag name is "tr"</dt>
7081: <dd>
7082:
7083: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7084: scope</a> with the same tag name as the token, this is a
7085: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7086: case</a>)</p>
7087:
7088: <p>Otherwise:</p>
7089:
7090: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7091: context</a>. (See below.)</p>
7092:
7093: <p>Pop the <a href="#current-node">current node</a> (which will be a
7094: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
7095: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
7096: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
7097: body</a>".</p>
7098:
7099: </dd>
7100:
7101: <dt>A start tag whose tag name is one of: "caption", "col",
7102: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
7103: <dt>An end tag whose tag name is "table"</dt>
7104: <dd>
7105:
7106: <p>Act as if an end tag with the tag name "tr" had been seen,
7107: then, if that token wasn't ignored, reprocess the current
7108: token.</p>
7109:
7110: <p class="note">The fake end tag token here can only be
7111: ignored in the <a href="#fragment-case">fragment case</a>.</p>
7112:
7113: </dd>
7114:
7115: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
7116: "thead"</dt>
7117: <dd>
7118:
7119: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7120: scope</a> with the same tag name as the token, this is a
7121: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7122:
7123: <p>Otherwise, act as if an end tag with the tag name "tr" had
7124: been seen, then reprocess the current token.</p>
7125:
7126: </dd>
7127:
7128: <dt>An end tag whose tag name is one of: "body", "caption",
7129: "col", "colgroup", "html", "td", "th"</dt>
7130: <dd>
7131: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7132: </dd>
7133:
7134: <dt>Anything else</dt>
7135: <dd>
7136: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" <a href="#insertion-mode">insertion
7137: mode</a>.</p>
7138: </dd>
7139:
7140: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
7141: back to a table row context</dfn>, it means that the UA must,
7142: while the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-tr-element">tr</a></code>
1.159 mike 7143: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 7144: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7145:
7146: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7147: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 7148: case</a>.</p>
7149:
7150:
1.755 mike 7151: <h5 id="parsing-main-intd"><span class="secno">8.2.5.18 </span>The "<dfn title="insertion mode: in cell">in cell</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7152:
7153: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7154: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7155:
7156: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7157: <dd>
7158:
7159: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7160: scope</a> with the same tag name as that of the token, then
7161: this is a <a href="#parse-error">parse error</a> and the token must be
7162: ignored.</p>
7163:
7164: <p>Otherwise:</p>
7165:
7166: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7167:
7168: <p>Now, if the <a href="#current-node">current node</a> is not an element
7169: with the same tag name as the token, then this is a
7170: <a href="#parse-error">parse error</a>.</p>
7171:
7172: <p>Pop elements from this stack until an element with the same
7173: tag name as the token has been popped from the stack.</p>
7174:
7175: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7176: the last marker</a>.</p>
7177:
7178: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>". (The
7179: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7180: this point.)</p>
7181:
7182: </dd>
7183:
7184: <dt>A start tag whose tag name is one of: "caption", "col",
7185: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7186: <dd>
7187:
7188: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7189: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7190: a <code>td</code> or <code>th</code> element in table
7191: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7192: the token. (<a href="#fragment-case">fragment case</a>)</p>
7193:
7194: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7195: reprocess the current token.</p>
7196:
7197: </dd>
7198:
7199: <dt>An end tag whose tag name is one of: "body", "caption",
7200: "col", "colgroup", "html"</dt>
7201: <dd>
7202: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7203: </dd>
7204:
7205: <dt>An end tag whose tag name is one of: "table", "tbody",
7206: "tfoot", "thead", "tr"</dt>
7207: <dd>
7208:
7209: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7210: scope</a> with the same tag name as that of the token
7211: (which can only happen for "tbody", "tfoot" and "thead", or,
7212: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7213: error</a> and the token must be ignored.</p>
7214:
7215: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7216: reprocess the current token.</p>
7217:
7218: </dd>
7219:
7220: <dt>Anything else</dt>
7221: <dd>
7222: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7223: mode</a>.</p>
7224: </dd>
7225:
7226: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7227: mean to run the following algorithm:</p>
7228:
7229: <ol><li><p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope" title="has an element in table scope">has a <code>td</code>
7230: element in table scope</a>, then act as if an end tag token
7231: with the tag name "td" had been seen.</p></li>
7232:
7233: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7234: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7235: <code>th</code> element in table scope</a>; act as if an end
7236: tag token with the tag name "th" had been seen.</p></li>
7237:
7238: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7239: have both a <code><a href="tabular-data.html#the-td-element">td</a></code> and a <code><a href="tabular-data.html#the-th-element">th</a></code> element <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table scope</a> at
7240: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7241: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7242: cell</a>".</p>
7243:
7244:
1.755 mike 7245: <h5 id="parsing-main-inselect"><span class="secno">8.2.5.19 </span>The "<dfn title="insertion mode: in select">in select</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7246:
7247: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7248: mode: in select">in select</a>", tokens must be handled as follows:</p>
7249:
7250: <dl class="switch"><dt>A character token</dt>
7251: <dd>
7252: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7253: character</a> into the <a href="#current-node">current node</a>.</p>
7254: </dd>
7255:
7256: <dt>A comment token</dt>
7257: <dd>
7258: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7259: node</a> with the <code title="">data</code> attribute set to
7260: the data given in the comment token.</p>
7261: </dd>
7262:
7263: <dt>A DOCTYPE token</dt>
7264: <dd>
7265: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7266: </dd>
7267:
7268: <dt>A start tag whose tag name is "html"</dt>
7269: <dd>
7270: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7271: mode</a>.</p>
7272: </dd>
7273:
7274: <dt>A start tag whose tag name is "option"</dt>
7275: <dd>
7276:
7277: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7278: element, act as if an end tag with the tag name "option" had
7279: been seen.</p>
7280:
7281: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7282:
7283: </dd>
7284:
7285: <dt>A start tag whose tag name is "optgroup"</dt>
7286: <dd>
7287:
7288: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7289: element, act as if an end tag with the tag name "option" had
7290: been seen.</p>
7291:
7292: <p>If the <a href="#current-node">current node</a> is an
7293: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7294: tag name "optgroup" had been seen.</p>
7295:
7296: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7297:
7298: </dd>
7299:
7300: <dt>An end tag whose tag name is "optgroup"</dt>
7301: <dd>
7302:
7303: <p>First, if the <a href="#current-node">current node</a> is an
7304: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7305: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7306: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7307: the tag name "option" had been seen.</p>
7308:
7309: <p>If the <a href="#current-node">current node</a> is an
7310: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7311: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7312: <a href="#parse-error">parse error</a>; ignore the token.</p>
7313:
7314: </dd>
7315:
7316: <dt>An end tag whose tag name is "option"</dt>
7317: <dd>
7318:
7319: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7320: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7321: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7322: error</a>; ignore the token.</p>
7323:
7324: </dd>
7325:
7326: <dt>An end tag whose tag name is "select"</dt>
7327: <dd>
7328:
7329: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7330: scope</a> with the same tag name as the token, this is a
7331: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7332: case</a>)</p>
7333:
7334: <p>Otherwise:</p>
7335:
7336: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7337: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7338: stack.</p>
7339:
7340: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7341:
7342: </dd>
7343:
7344: <dt>A start tag whose tag name is "select"</dt>
7345: <dd>
7346:
7347: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7348: an end tag with the tag name "select" instead.</p>
7349:
7350: </dd>
7351:
7352: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7353: <dd>
1.73 mike 7354:
7355: <p><a href="#parse-error">Parse error</a>.</p>
7356:
1.124 mike 7357: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a <code>select</code>
7358: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7359: case</a>)</p>
1.73 mike 7360:
7361: <p>Otherwise, act as if an end tag with the tag name "select" had
7362: been seen, and reprocess the token.</p>
7363:
1.1 mike 7364: </dd>
7365:
7366: <dt>A start tag token whose tag name is "script"</dt>
7367: <dd>
7368: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7369: mode</a>.</p>
7370: </dd>
7371:
7372: <dt>An end-of-file token</dt>
7373: <dd>
7374:
7375: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7376: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7377: error</a>.</p>
7378:
7379: <p class="note">It can only be the <a href="#current-node">current node</a> in
7380: the <a href="#fragment-case">fragment case</a>.</p>
7381:
7382: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7383:
7384: </dd>
7385:
7386: <dt>Anything else</dt>
7387: <dd>
7388: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7389: </dd>
7390:
1.755 mike 7391: </dl><h5 id="parsing-main-inselectintable"><span class="secno">8.2.5.20 </span>The "<dfn title="insertion mode: in select in table">in select in table</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7392:
7393: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7394: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7395:
7396: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7397: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7398: <dd>
7399: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7400: name "select" had been seen, and reprocess the token.</p>
7401: </dd>
7402:
7403: <dt>An end tag whose tag name is one of: "caption", "table",
7404: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7405: <dd>
7406:
7407: <p><a href="#parse-error">Parse error</a>.</p>
7408:
7409: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7410: element in table scope</a> with the same tag name as that
7411: of the token, then act as if an end tag with the tag name
7412: "select" had been seen, and reprocess the token. Otherwise,
7413: ignore the token.</p>
7414:
7415: </dd>
7416:
7417: <dt>Anything else</dt>
7418: <dd>
7419: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" <a href="#insertion-mode">insertion
7420: mode</a>.</p>
7421: </dd>
7422:
1.755 mike 7423: </dl><h5 id="parsing-main-inforeign"><span class="secno">8.2.5.21 </span>The "<dfn title="insertion mode: in foreign content">in foreign content</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7424:
7425: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7426: mode: in foreign content">in foreign content</a>", tokens must be
7427: handled as follows:</p>
7428:
7429: <dl class="switch"><dt>A character token</dt>
7430: <dd>
7431:
7432: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7433: character</a> into the <a href="#current-node">current node</a>.</p>
7434:
7435: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7436: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7437: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7438: flag</a> to "not ok".</p>
7439:
7440: </dd>
7441:
7442: <dt>A comment token</dt>
7443: <dd>
7444: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7445: node</a> with the <code title="">data</code> attribute set to
7446: the data given in the comment token.</p>
7447: </dd>
7448:
7449: <dt>A DOCTYPE token</dt>
7450: <dd>
7451: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7452: </dd>
7453:
1.724 mike 7454: <dt>An end tag whose tag name is "script", if the <a href="#current-node">current node</a> is a <code title="">script</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
1.1 mike 7455: <dd>
7456:
7457: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7458: elements</a>.</p>
7459:
7460: <p>Let the <var title="">old insertion point</var> have the
7461: same value as the current <a href="#insertion-point">insertion point</a>. Let
7462: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7463: input character</a>.</p>
7464:
7465: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7466: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7467:
7468: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7469: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7470: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7471:
1.159 mike 7472: <p class="note">Even if this causes <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters to be inserted into the
1.1 mike 7473: tokenizer</a>, the parser will not be executed reentrantly,
7474: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7475:
7476: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7477: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7478: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7479:
7480: <p>Let the <a href="#insertion-point">insertion point</a> have the value of the <var title="">old insertion point</var>. (In other words, restore the
7481: <a href="#insertion-point">insertion point</a> to its previous value. This value
7482: might be the "undefined" value.)</p>
7483:
7484: </dd>
7485:
1.724 mike 7486: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mi</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7487: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mo</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7488: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mn</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7489: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">ms</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7490: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mtext</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7491: <dt>A start tag whose tag name is "svg", if the <a href="#current-node">current node</a> is an <code title="">annotation-xml</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7492: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">foreignObject</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7493: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">desc</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7494: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">title</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7495: <dt>A start tag, if the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</dt>
1.1 mike 7496: <dt>An end tag</dt>
7497: <dd>
7498:
7499: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7500: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7501:
7502: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7503: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7504: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7505: element in scope">in scope</a> that has a namespace other than
1.724 mike 7506: the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7507: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7508:
7509: </dd>
7510:
7511: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7512: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7513: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7514: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7515: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7516: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7517: "li", "listing"<!-- so that pre and listing can be handled
7518: uniformly throughout the parser -->, "menu", "meta", "nobr",
7519: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7520: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7521: "span", "strong", "strike"<!-- so that s and strike can be handled
7522: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7523: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7524: list was determined empirically by studying over 6,000,000,000
1.422 mike 7525: pages that were specifically not XML pages -->
7526: <dt>A start tag whose tag name is "font", if the token has any
7527: attributes named "color", "face", or "size"</dt> <!-- the
7528: attributes here are required so that SVG <font> will go through as
7529: SVG but legacy <font>s won't -->
7530: <dt>An end-of-file token</dt> <dd>
1.1 mike 7531:
7532: <p><a href="#parse-error">Parse error</a>.</p>
7533:
7534: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
1.724 mike 7535: the <a href="#current-node">current node</a> is in the <a href="infrastructure.html#html-namespace-0">HTML
1.1 mike 7536: namespace</a>.</p>
7537:
7538: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7539: insertion mode</a>, and reprocess the token.</p>
7540:
7541: </dd>
7542:
7543: <dt>Any other start tag</dt>
7544: <dd>
7545:
7546: <p>If the <a href="#current-node">current node</a> is an element in the
1.724 mike 7547: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
1.1 mike 7548: attributes</a> for the token. (This fixes the case of MathML
7549: attributes that are not all lowercase.)</p>
7550:
1.724 mike 7551: <p>If the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#svg-namespace">SVG
1.1 mike 7552: namespace</a>, and the token's tag name is one of the ones in
7553: the first column of the following table, change the tag name to
7554: the name given in the corresponding cell in the second
7555: column. (This fixes the case of SVG elements that are not all
7556: lowercase.)</p>
7557:
7558: <table><thead><tr><th> Tag name </th><th> Element name
7559: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7560: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7561: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7562: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7563: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7564: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7565: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7566: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7567: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7568: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7569: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7570: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7571: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7572: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7573: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7574: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7575: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7576: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7577: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7578: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7579: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7580: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7581: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7582: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7583: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7584: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7585: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7586: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7587: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7588: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7589: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7590: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7591: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7592: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7593: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7594: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7595: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
1.724 mike 7596: </td></tr></tbody></table><p>If the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#svg-namespace">SVG
1.1 mike 7597: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7598: token. (This fixes the case of SVG attributes that are not all
7599: lowercase.)</p>
7600:
7601: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7602: fixes the use of namespaced attributes, in particular XLink in
7603: SVG.)</p>
7604:
7605: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7606: same namespace as the <a href="#current-node">current node</a>.</p>
7607:
7608: <p>If the token has its <i>self-closing flag</i> set, pop the
7609: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7610: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7611: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7612:
7613: </dd>
7614:
1.755 mike 7615: </dl><h5 id="parsing-main-afterbody"><span class="secno">8.2.5.22 </span>The "<dfn title="insertion mode: after body">after body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7616:
7617: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7618: mode: after body">after body</a>", tokens must be handled as follows:</p>
7619:
7620: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7621: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7622: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7623: <dd>
7624: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7625: mode</a>.</p>
7626: </dd>
7627:
7628: <dt>A comment token</dt>
7629: <dd>
7630: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7631: the <a href="#stack-of-open-elements">stack of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 7632: element), with the <code title="">data</code> attribute set to
7633: the data given in the comment token.</p>
7634: </dd>
7635:
7636: <dt>A DOCTYPE token</dt>
7637: <dd>
7638: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7639: </dd>
7640:
7641: <dt>A start tag whose tag name is "html"</dt>
7642: <dd>
7643: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7644: mode</a>.</p>
7645: </dd>
7646:
7647: <dt>An end tag whose tag name is "html"</dt>
7648: <dd>
7649:
7650: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7651: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7652: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7653:
7654: <p>Otherwise, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-after-body-insertion-mode" title="insertion mode: after after body">after after
7655: body</a>".</p>
7656:
7657: </dd>
7658:
7659: <dt>An end-of-file token</dt>
7660: <dd>
7661: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7662: </dd>
7663:
7664: <dt>Anything else</dt>
7665: <dd>
7666:
7667: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7668: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7669: body</a>" and reprocess the token.</p>
7670:
7671: </dd>
7672:
1.755 mike 7673: </dl><h5 id="parsing-main-inframeset"><span class="secno">8.2.5.23 </span>The "<dfn title="insertion mode: in frameset">in frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7674:
7675: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7676: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7677:
7678: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7679: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7680: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7681: <dd>
7682: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7683: the <a href="#current-node">current node</a>.</p>
7684: </dd>
7685:
7686: <dt>A comment token</dt>
7687: <dd>
7688: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7689: node</a> with the <code title="">data</code> attribute set to
7690: the data given in the comment token.</p>
7691: </dd>
7692:
7693: <dt>A DOCTYPE token</dt>
7694: <dd>
7695: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7696: </dd>
7697:
7698: <dt>A start tag whose tag name is "html"</dt>
7699: <dd>
7700: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7701: mode</a>.</p>
7702: </dd>
7703:
7704: <dt>A start tag whose tag name is "frameset"</dt>
7705: <dd>
7706: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7707: </dd>
7708:
7709: <dt>An end tag whose tag name is "frameset"</dt>
7710: <dd>
7711:
7712: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7713: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7714: error</a>; ignore the token. (<a href="#fragment-case">fragment
7715: case</a>)</p>
7716:
7717: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7718: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7719:
7720: <p>If the parser was <em>not</em> originally created as part
7721: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7722: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7723: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7724: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7725: frameset</a>".</p>
7726:
7727: </dd>
7728:
7729: <dt>A start tag whose tag name is "frame"</dt>
7730: <dd>
7731:
7732: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7733: Immediately pop the <a href="#current-node">current node</a> off the
7734: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7735:
7736: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7737: token's <i>self-closing flag</i></a>, if it is set.</p>
7738:
7739: </dd>
7740:
7741: <dt>A start tag whose tag name is "noframes"</dt>
7742: <dd>
7743: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7744: mode</a>.</p>
7745: </dd>
7746:
7747: <dt>An end-of-file token</dt>
7748: <dd>
7749:
7750: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7751: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7752: error</a>.</p>
7753:
7754: <p class="note">It can only be the <a href="#current-node">current node</a> in
7755: the <a href="#fragment-case">fragment case</a>.</p>
7756:
7757: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7758:
7759: </dd>
7760:
7761: <dt>Anything else</dt>
7762: <dd>
7763: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7764: </dd>
7765:
1.755 mike 7766: </dl><h5 id="parsing-main-afterframeset"><span class="secno">8.2.5.24 </span>The "<dfn title="insertion mode: after frameset">after frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7767:
7768: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7769: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7770:
7771: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7772: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7773: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7774: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7775: <dd>
7776: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7777: the <a href="#current-node">current node</a>.</p>
7778: </dd>
7779:
7780: <dt>A comment token</dt>
7781: <dd>
7782: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7783: node</a> with the <code title="">data</code> attribute set to
7784: the data given in the comment token.</p>
7785: </dd>
7786:
7787: <dt>A DOCTYPE token</dt>
7788: <dd>
7789: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7790: </dd>
7791:
7792: <dt>A start tag whose tag name is "html"</dt>
7793: <dd>
7794: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7795: mode</a>.</p>
7796: </dd>
7797:
7798: <dt>An end tag whose tag name is "html"</dt>
7799: <dd>
7800: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
7801: frameset</a>".</p>
7802: </dd>
7803:
7804: <dt>A start tag whose tag name is "noframes"</dt>
7805: <dd>
7806: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7807: mode</a>.</p>
7808: </dd>
7809:
7810: <dt>An end-of-file token</dt>
7811: <dd>
7812: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7813: </dd>
7814:
7815: <dt>Anything else</dt>
7816: <dd>
7817: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7818: </dd>
7819:
1.755 mike 7820: </dl><h5 id="the-after-after-body-insertion-mode"><span class="secno">8.2.5.25 </span>The "<dfn title="insertion mode: after after body">after after body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7821:
7822: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7823: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7824:
7825: <dl class="switch"><dt>A comment token</dt>
7826: <dd>
7827: <p>Append a <code>Comment</code> node to the <code>Document</code>
7828: object with the <code title="">data</code> attribute set to the
7829: data given in the comment token.</p>
7830: </dd>
7831:
7832: <dt>A DOCTYPE token</dt>
7833: <dt>A character token that is one of U+0009 CHARACTER
7834: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7835: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7836: <dt>A start tag whose tag name is "html"</dt>
7837: <dd>
7838: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7839: mode</a>.</p>
7840: </dd>
7841:
7842: <dt>An end-of-file token</dt>
7843: <dd>
7844: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7845: </dd>
7846:
7847: <dt>Anything else</dt>
7848: <dd>
7849: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7850: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7851: reprocess the token.</p>
7852: </dd>
7853:
1.755 mike 7854: </dl><h5 id="the-after-after-frameset-insertion-mode"><span class="secno">8.2.5.26 </span>The "<dfn title="insertion mode: after after frameset">after after frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7855:
7856: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7857: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7858:
7859: <dl class="switch"><dt>A comment token</dt>
7860: <dd>
7861: <p>Append a <code>Comment</code> node to the <code>Document</code>
7862: object with the <code title="">data</code> attribute set to the
7863: data given in the comment token.</p>
7864: </dd>
7865:
7866: <dt>A DOCTYPE token</dt>
7867: <dt>A character token that is one of U+0009 CHARACTER
7868: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7869: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7870: <dt>A start tag whose tag name is "html"</dt>
7871: <dd>
7872: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7873: mode</a>.</p>
7874: </dd>
7875:
7876: <dt>An end-of-file token</dt>
7877: <dd>
7878: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7879: </dd>
7880:
7881: <dt>A start tag whose tag name is "noframes"</dt>
7882: <dd>
7883: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7884: mode</a>.</p>
7885: </dd>
7886:
7887: <dt>Anything else</dt>
7888: <dd>
7889: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7890: </dd>
7891:
1.266 mike 7892: </dl></div><div class="impl">
7893:
1.755 mike 7894: <h4 id="the-end"><span class="secno">8.2.6 </span>The end</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7895:
7896: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7897: the document, the user agent must run the following steps:</p>
1.1 mike 7898:
1.484 mike 7899: <ol><!-- this happens as part of one of the tasks that runs the parser --><li><p>Set the <a href="dom.html#current-document-readiness">current document readiness</a> to
7900: "interactive" <!-- this also synchronously fires an event --> and
7901: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7902:
7903: <li><p>If the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the
7904: document has finished parsing</a> is not empty, run these
7905: substeps:</p>
7906:
1.755 mike 7907: <ol><li><p><a href="web-application-apis.html#spin-the-event-loop">Spin the event loop</a> until the first
1.484 mike 7908: <code><a href="semantics.html#script">script</a></code> in the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will
7909: execute when the document has finished parsing</a> has its
7910: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7911: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7912: blocking scripts</a>.</p></li>
7913:
7914: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7915: first <code><a href="semantics.html#script">script</a></code> in the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will
7916: execute when the document has finished parsing</a>.</p></li>
7917:
7918: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7919: <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the document has
7920: finished parsing</a> (i.e. shift out the first entry in the
7921: list).</p></li>
7922:
7923: <li><p>If the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the
7924: document has finished parsing</a> is still not empty, repeat
7925: these substeps again from substep 1.</p>
7926:
7927: </li></ol></li>
7928:
1.755 mike 7929: <li><p><a href="web-application-apis.html#spin-the-event-loop">Spin the event loop</a> until the <a href="semantics.html#list-of-scripts-that-will-execute-as-soon-as-possible">list of
1.484 mike 7930: scripts that will execute as soon as possible</a> is
7931: empty.</p></li>
7932:
1.755 mike 7933: <li><p><a href="web-application-apis.html#queue-a-task">Queue a task</a> to <a href="web-application-apis.html#fire-a-simple-event">fire a simple
1.484 mike 7934: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7935: <code>Document</code>.</p></li>
7936:
1.755 mike 7937: <li><p><a href="web-application-apis.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
1.484 mike 7938: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7939: the <code>Document</code>.</p></li>
7940:
1.755 mike 7941: <li><p><a href="web-application-apis.html#queue-a-task">Queue a task</a> to set the <a href="dom.html#current-document-readiness">current document
1.484 mike 7942: readiness</a> to "complete". <!-- this also fires an event
7943: synchronously during the task --></p></li>
1.1 mike 7944:
1.484 mike 7945: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.755 mike 7946: context</a>, then <a href="web-application-apis.html#queue-a-task">queue a task</a> to <a href="web-application-apis.html#fire-a-simple-event">fire a
1.460 mike 7947: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7948: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7949: its <code title="dom-event-target">target</code> set to the
7950: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7951: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7952:
1.569 mike 7953: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.755 mike 7954: context</a>, then <a href="web-application-apis.html#queue-a-task">queue a task</a> to <a href="web-application-apis.html#fire-a-simple-event">fire a
1.569 mike 7955: simple event</a> named <code title="event-pageshow">pageshow</code> at the
7956: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object.</p></li>
7957:
1.484 mike 7958: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.755 mike 7959: object</a>, then <a href="web-application-apis.html#queue-a-task">queue a task</a> to fire a <code title="event-popstate"><a href="history.html#event-popstate">popstate</a></code> event at the
1.1 mike 7960: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7961: <code><a href="history.html#popstateevent">PopStateEvent</a></code> interface, with the <code title="dom-PopStateEvent-state"><a href="history.html#dom-popstateevent-state">state</a></code> attribute set to the
7962: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7963: must bubble but not be cancelable and has no default
7964: action.</p></li>
1.1 mike 7965:
1.725 mike 7966: <li><p>If the <code>Document</code> has any <a href="offline.html#pending-application-cache-download-process-tasks">pending
1.755 mike 7967: application cache download process tasks</a>, then <a href="web-application-apis.html#queue-a-task" title="queue a task">queue</a> each such <a href="web-application-apis.html#concept-task" title="concept-task">task</a> in the order they were added to
1.725 mike 7968: the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application cache download process
7969: tasks</a>, and then empty the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application
1.755 mike 7970: cache download process tasks</a>. The <a href="web-application-apis.html#task-source">task source</a>
7971: for these <a href="web-application-apis.html#concept-task" title="concept-task">tasks</a> is the
7972: <a href="web-application-apis.html#networking-task-source">networking task source</a>.</p></li>
1.725 mike 7973:
7974: <li><p>The <code>Document</code> is now <dfn id="completely-loaded">completely
7975: loaded</dfn>.</p></li>
7976:
1.755 mike 7977: </ol><p>Except where otherwise specified, the <a href="web-application-apis.html#task-source">task source</a>
7978: for the <a href="web-application-apis.html#concept-task" title="concept-task">tasks</a> mentioned in this
7979: section is the <a href="web-application-apis.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7980:
1.266 mike 7981: </div><div class="impl">
1.1 mike 7982:
1.755 mike 7983: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">8.2.7 </span>Coercing an HTML DOM into an infoset</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7984:
7985: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7986: conjunction with an XML pipeline, it is possible that the
7987: constructed DOM is not compatible with the XML tool chain in certain
7988: subtle ways. For example, an XML toolchain might not be able to
7989: represent attributes with the name <code title="">xmlns</code>,
7990: since they conflict with the Namespaces in XML syntax. There is also
7991: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7992: included in the DOM itself. This section specifies some rules for
7993: handling these issues.</p>
7994:
7995: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7996: drop DOCTYPEs altogether.</p>
7997:
7998: <p>If the XML API doesn't support attributes in no namespace that
7999: are named "<code title="">xmlns</code>", attributes whose names
8000: start with "<code title="">xmlns:</code>", or attributes in the
1.724 mike 8001: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
1.1 mike 8002: attributes.</p>
8003:
8004: <p>The tool may annotate the output with any namespace declarations
8005: required for proper operation.</p>
8006:
8007: <p>If the XML API being used restricts the allowable characters in
8008: the local names of elements and attributes, then the tool may map
8009: all element and attribute local names that the API wouldn't support
8010: to a set of names that <em>are</em> allowed, by replacing any
8011: character that isn't supported with the uppercase letter U and the
8012: six digits of the character's Unicode code point when expressed in
8013: hexadecimal, using digits 0-9 and capital letters A-F as the
8014: symbols, in increasing numeric order.</p>
8015:
8016: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
8017: parser</a>, though it is neither a legal HTML element name nor a
8018: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
8019: element name (though it's still not legal in HTML by any means).</p>
8020:
8021: <p class="example">As another example, consider the attribute
8022: <code>xlink:href</code>. Used on a MathML element, it becomes, after
8023: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
8024: attribute with a prefix "<code title="">xlink</code>" and a local
8025: name "<code title="">href</code>". However, used on an HTML element,
8026: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
8027: might not be accepted by an XML API. It could thus get converted,
8028: becoming "<code title="">xlinkU00003Ahref</code>".</p>
8029:
8030: <p class="note">The resulting names from this conversion
8031: conveniently can't clash with any attribute generated by the
8032: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
8033: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
8034: algorithm's table.</p>
8035:
8036: <p>If the XML API restricts comments from having two consecutive
8037: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
8038: U+0020 SPACE character between any such offending characters.</p>
8039:
8040: <p>If the XML API restricts comments from ending in a
8041: U+002D HYPHEN-MINUS character (-), the tool may insert a single
8042: U+0020 SPACE character at the end of such comments.</p>
8043:
8044: <p>If the XML API restricts allowed characters in character data,
1.439 mike 8045: attribute values, or comments, the tool may replace any U+000C FORM
8046: FEED (FF) character with a U+0020 SPACE character, and any other
8047: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 8048:
8049: <p>If the tool has no way to convey out-of-band information, then
8050: the tool may drop the following information:</p>
8051:
8052: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
8053: <i><a href="dom.html#limited-quirks-mode">limited quirks mode</a></i>, or <i><a href="dom.html#quirks-mode">quirks mode</a></i></li>
8054:
8055: <li>The association between form controls and forms that aren't
8056: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
8057: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
8058:
8059: </ul><p class="note">The mutations allowed by this section apply
8060: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
8061: applied. For example, a <code title=""><a::></code> start tag
8062: will be closed by a <code title=""></a::></code> end tag, and
8063: never by a <code title=""></aU00003AU00003A></code> end tag, even
8064: if the user agent is using the rules above to then generate an
8065: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
8066:
1.266 mike 8067: </div><div class="impl">
1.1 mike 8068:
1.755 mike 8069: <h4 id="an-introduction-to-error-handling-and-strange-cases-in-the-parser"><span class="secno">8.2.8 </span>An introduction to error handling and strange cases in the parser</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8070:
8071: <p><i>This section is non-normative.</i></p>
8072:
8073: <p>This section examines some erroneous markup and discusses how
8074: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
8075:
8076:
1.755 mike 8077: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">8.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
1.1 mike 8078:
8079: <p><i>This section is non-normative.</i></p>
8080:
8081: <p>The most-often discussed example of erroneous markup is as
8082: follows:</p>
8083:
8084: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
8085:
8086: <p>The parsing of this markup is straightforward up to the "3". At
8087: this point, the DOM looks like this:</p>
8088:
1.159 mike 8089: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>Here, the <a href="#stack-of-open-elements">stack of open elements</a> has five elements
8090: on it: <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="semantics.html#the-p-element">p</a></code>,
1.1 mike 8091: <code><a href="text-level-semantics.html#the-b-element">b</a></code>, and <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The <a href="#list-of-active-formatting-elements">list of active
8092: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
8093: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
8094:
8095: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
8096: invoked. This is a simple case, in that the <var title="">formatting
8097: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
8098: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8099: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8100: <code><a href="semantics.html#the-body-element-0">body</a></code>, and <code><a href="semantics.html#the-p-element">p</a></code>, while the <a href="#list-of-active-formatting-elements">list of
1.1 mike 8101: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
8102: DOM tree is unmodified at this point.</p>
8103:
8104: <p>The next token is a character ("4"), triggers the <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">reconstruction of
8105: the active formatting elements</a>, in this case just the
8106: <code><a href="text-level-semantics.html#the-i-element">i</a></code> element. A new <code><a href="text-level-semantics.html#the-i-element">i</a></code> element is thus created
8107: for the "4" text node. After the end tag token for the "i" is also
8108: received, and the "5" text node is inserted, the DOM looks as
8109: follows:</p>
8110:
1.755 mike 8111: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">4</span></li></ul></li><li class="t3"><code>#text</code>: <span title="">5</span></li></ul></li></ul></li></ul></li></ul><h5 id="misnested-tags:-b-p-b-p"><span class="secno">8.2.8.2 </span>Misnested tags: <b><p></b></p></h5>
1.1 mike 8112:
8113: <p><i>This section is non-normative.</i></p>
8114:
8115: <p>A case similar to the previous one is the following:</p>
8116:
8117: <pre><b>1<p>2</b>3</p></pre>
8118:
8119: <p>Up to the "2" the parsing here is straightforward:</p>
8120:
1.159 mike 8121: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>The interesting part is when the end tag token with the tag name
1.1 mike 8122: "b" is parsed.</p>
8123:
8124: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8125: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8126: <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="text-level-semantics.html#the-b-element">b</a></code>, and <code><a href="semantics.html#the-p-element">p</a></code>. The
1.1 mike 8127: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
8128: <code><a href="text-level-semantics.html#the-b-element">b</a></code>. The <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
8129:
8130: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
8131: in the previous example. However, in this case, there <em>is</em> a
8132: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
8133: this time the adoption agency algorithm isn't skipped over.</p>
8134:
1.159 mike 8135: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 8136: element. A conceptual "bookmark" marks the position of the
8137: <code><a href="text-level-semantics.html#the-b-element">b</a></code> in the <a href="#list-of-active-formatting-elements">list of active formatting
8138: elements</a>, but since that list has only one element in it,
8139: it won't have much effect.</p>
8140:
8141: <p>As the algorithm progresses, <var title="">node</var> ends up set
8142: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
8143: node</var> ends up set to the <var title="">furthest block</var>
8144: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
8145:
8146: <p>The <var title="">last node</var> gets appended (moved) to the
8147: <var title="">common ancestor</var>, so that the DOM looks like:</p>
8148:
1.159 mike 8149: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul><p>A new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created, and the children of the
1.1 mike 8150: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
8151:
1.159 mike 8152: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code></li></ul></li></ul></li></ul><ul class="domTree"><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul><p>Finally, the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is appended to the
1.1 mike 8153: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
8154:
1.159 mike 8155: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>The <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is removed from the <a href="#list-of-active-formatting-elements">list of
1.1 mike 8156: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8157: elements</a>, so that when the "3" is parsed, it is appended to
8158: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8159:
1.755 mike 8160: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li></ul></li></ul><h5 id="unexpected-markup-in-tables"><span class="secno">8.2.8.3 </span>Unexpected markup in tables</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8161:
8162: <p><i>This section is non-normative.</i></p>
8163:
8164: <p>Error handling in tables is, for historical reasons, especially
8165: strange. For example, consider the following markup:</p>
8166:
8167: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8168:
8169: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8170: directly inside a table like that, and the parser handles this case
8171: by placing the element <em>before</em> the table. (This is called <i title="foster parent"><a href="#foster-parent">foster parenting</a></i>.) This can be seen by
8172: examining the DOM tree as it stands just after the
8173: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8174:
1.159 mike 8175: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code></li></ul></li></ul></li></ul><p>...and then immediately after the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start
1.1 mike 8176: tag has been seen:</p>
8177:
1.159 mike 8178: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code></li></ul></li></ul></li></ul><p>At this point, the <a href="#stack-of-open-elements">stack of open elements</a> has on it
8179: the elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>,
1.1 mike 8180: <code><a href="tabular-data.html#the-table-element">table</a></code>, and <code><a href="text-level-semantics.html#the-b-element">b</a></code> (in that order, despite the
8181: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8182: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8183: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8184: table">in table</a>".</p>
8185:
8186: <p>The <code><a href="tabular-data.html#the-tr-element">tr</a></code> start tag causes the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element
8187: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8188: implied; the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> and <code><a href="tabular-data.html#the-tr-element">tr</a></code> elements are
8189: then handled in a rather straight-forward manner, taking the parser
8190: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8191: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8192: row</a>" insertion modes, after which the DOM looks as
8193: follows:</p>
8194:
1.159 mike 8195: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code></li></ul></li></ul></li></ul></li></ul></li></ul><p>Here, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
8196: elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8197: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, and <code><a href="tabular-data.html#the-tr-element">tr</a></code>; the <a href="#list-of-active-formatting-elements">list of active
8198: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8199: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8200: mode: in row">in row</a>".</p>
8201:
8202: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8203: <code><a href="tabular-data.html#the-td-element">td</a></code> element on the tree, puts a marker on the <a href="#list-of-active-formatting-elements">list
8204: of active formatting elements</a> (it also switches to the "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>" <a href="#insertion-mode">insertion
8205: mode</a>).</p>
8206:
1.159 mike 8207: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The marker means that when the "aaa" character tokens are seen,
1.1 mike 8208: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8209: node:</p>
8210:
1.159 mike 8211: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The end tags are handled in a straight-forward manner; after
1.1 mike 8212: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8213: elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8214: and <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>; the <a href="#list-of-active-formatting-elements">list of active formatting
8215: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8216: marker having been removed by the "td" end tag token); and the
8217: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8218: table body">in table body</a>".</p>
8219:
8220: <p>Thus it is that the "bbb" character tokens are found. These
8221: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8222: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8223: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8224: body">in table body</a>"). The character tokens are collected,
8225: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8226: seen, they are processed as a group. Since they are not all spaces,
8227: they are handled as per the "anything else" rules in the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" insertion mode,
8228: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8229: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8230: parent">foster parenting</a>.</p>
8231:
8232: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8233: active formatting elements are reconstructed</a>, a
8234: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8235: parent">foster parented</a>, and then the "bbb" text node is
8236: appended to it:</p>
8237:
1.159 mike 8238: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">bbb</span></li></ul></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> has on it the elements
8239: <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8240: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, and the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> (again, note that
8241: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8242: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8243: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8244: mode: in table body">in table body</a>".</p>
8245:
8246: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8247: character">space characters</a> instead of "bbb", then those
8248: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8249: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8250:
8251: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8252: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8253: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8254: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8255: elements</a>, so the "ccc" character tokens after the table
8256: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8257: time after the table:</p>
8258:
1.755 mike 8259: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">bbb</span></li></ul></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">ccc</span></li></ul></li></ul></li></ul></li></ul><h5 id="scripts-that-modify-the-page-as-it-is-being-parsed"><span class="secno">8.2.8.4 </span>Scripts that modify the page as it is being parsed</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8260:
8261: <p><i>This section is non-normative.</i></p>
8262:
8263: <p>Consider the following markup, which for this example we will
8264: assume is the document with <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/inner</code>, being rendered as the
1.159 mike 8265: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8266: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8267:
8268: <pre><div id=a>
8269: <script>
8270: var div = document.getElementById('a');
8271: parent.document.body.appendChild(div);
8272: </script>
8273: <script>
8274: alert(document.URL);
8275: </script>
8276: </div>
8277: <script>
8278: alert(document.URL);
8279: </script></pre>
8280:
8281: <p>Up to the first "script" end tag, before the script is parsed,
8282: the result is relatively straightforward:</p>
8283:
1.306 mike 8284: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-div-element">div</a></code> <span class="t2" title=""><code class="attribute name">id</code>="<code class="attribute value"><a href="text-level-semantics.html#the-a-element">a</a></code>"</span><ul><li class="t3"><code>#text</code>: <span title="">
8285: </span></li><li class="t1"><code><a href="semantics.html#script">script</a></code><ul><li class="t3"><code>#text</code>: <span title="">var div = document.getElementById('a'); ⏎ parent.document.body.appendChild(div);</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>After the script is parsed, though, the <code><a href="semantics.html#the-div-element">div</a></code> element
1.1 mike 8286: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8287:
1.159 mike 8288: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code></li></ul></li></ul><p>They are, at this point, in the <code>Document</code> of the
1.1 mike 8289: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8290: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8291: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8292:
8293: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8294: is inserted <em>into the outer <code>Document</code>
8295: object</em>.</p>
8296:
1.755 mike 8297: <p>This also means that the <a href="web-application-apis.html#script-s-global-object">script's global object</a> is
1.1 mike 8298: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8299: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8300: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8301:
8302: <p class="note">This isn't a security problem since the script that
1.306 mike 8303: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.714 mike 8304: only do so because the two <code>Document</code> object have the
8305: same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8306:
8307: <p>Thus, the first alert says "http://example.com/outer".</p>
8308:
1.306 mike 8309: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8310: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8311: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8312:
1.159 mike 8313: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#script">script</a></code><ul><li class="t3"><code>#text</code>: <span title="">alert(document.URL);</span></li></ul></li></ul></li></ul></li></ul><p>This second alert will say "http://example.com/inner".</p>
1.1 mike 8314:
8315:
8316:
8317:
1.755 mike 8318: <h3 id="serializing-html-fragments"><span class="secno">8.3 </span>Serializing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8319:
8320: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8321: algorithm</dfn>. The algorithm takes as input a DOM
8322: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8323: exception.</p>
8324:
8325: <p class="note">This algorithm serializes the <em>children</em> of
8326: the node being serialized, not the node itself.</p>
8327:
8328: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8329: the empty string.</p></li>
8330:
8331: <li>
8332:
8333: <p>For each child node of <var title="">the node</var>, in
8334: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8335:
8336: </p><ol><li><p>Let <var title="">current node</var> be the child node
8337: being processed.</p></li>
8338:
8339: <li>
8340:
8341: <p>Append the appropriate string from the following list to
8342: <var title="">s</var>:</p>
8343:
8344: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8345:
8346: <dd>
8347:
1.588 mike 8348: <p>Append a U+003C LESS-THAN SIGN character character (<),
8349: followed by the element's tag name. (For nodes created by the
8350: <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
1.1 mike 8351: lowercase.)</p>
8352:
8353: <p>For each attribute that the element has, append a U+0020
8354: SPACE character, the attribute's name (which, for attributes
8355: set by the <a href="#html-parser">HTML parser</a> or by <code title="">Element.setAttributeNode()</code> or <code title="">Element.setAttribute()</code>, will be lowercase), a
1.588 mike 8356: U+003D EQUALS SIGN character (=), a U+0022 QUOTATION MARK
8357: character ("), the attribute's value, <a href="#escapingString" title="escaping a string">escaped as described below</a> in
8358: <i>attribute mode</i>, and a second U+0022 QUOTATION MARK
8359: character (").</p>
1.1 mike 8360:
8361: <p>While the exact order of attributes is UA-defined, and may
8362: depend on factors such as the order that the attributes were
8363: given in the original markup, the sort order must be stable,
8364: such that consecutive invocations of this algorithm serialize an
8365: element's attributes in the same order.</p>
8366:
1.588 mike 8367: <p>Append a U+003E GREATER-THAN SIGN character (>).</p>
1.1 mike 8368:
8369: <p>If <var title="">current node</var> is an
1.5 mike 8370: <code><a href="the-canvas-element.html#the-area-element">area</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>, <code><a href="obsolete.html#basefont">basefont</a></code>,
1.724 mike 8371: <code><a href="obsolete.html#bgsound">bgsound</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>, <code><a href="tabular-data.html#the-col-element">col</a></code>,
1.159 mike 8372: <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>, <code><a href="obsolete.html#frame">frame</a></code>, <code><a href="semantics.html#the-hr-element">hr</a></code>,
8373: <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>, <code><a href="forms.html#the-keygen-element">keygen</a></code>,
1.589 mike 8374: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>, or
1.724 mike 8375: <code><a href="obsolete.html#wbr">wbr</a></code> element, then continue on to the next child
1.589 mike 8376: node at this point.</p> <!-- also, i guess: image and isindex,
8377: but we don't list those because we don't consider those
8378: "elements", more "macros", and thus we should never serialize
8379: them -->
1.1 mike 8380:
8381: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8382: <code><a href="forms.html#the-textarea-element">textarea</a></code>, or <code><a href="obsolete.html#listing">listing</a></code> element, append
1.1 mike 8383: a U+000A LINE FEED (LF) character.</p>
8384:
8385: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8386: serialization algorithm</a> on the <var title="">current
8387: node</var> element (thus recursing into this algorithm for
1.588 mike 8388: that element), followed by a U+003C LESS-THAN SIGN character
8389: (<), a U+002F SOLIDUS character (/), the element's tag name
8390: again, and finally a U+003E GREATER-THAN SIGN character
8391: (>).</p>
1.1 mike 8392:
8393: </dd>
8394:
8395:
8396: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8397: node</dt>
8398:
8399: <dd>
8400:
1.19 mike 8401: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8402: <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="semantics.html#script">script</a></code>, <code><a href="obsolete.html#xmp">xmp</a></code>,
1.159 mike 8403: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>,
1.222 mike 8404: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8405: if the parent of <var title="">current node</var> is
1.755 mike 8406: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element and <a href="web-application-apis.html#concept-n-script" title="concept-n-script">scripting is enabled</a> for the
1.222 mike 8407: node, then append the value of <var title="">current
8408: node</var>'s <code title="">data</code> IDL attribute
8409: literally.</p>
1.1 mike 8410:
8411: <p>Otherwise, append the value of <var title="">current
1.192 mike 8412: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8413: below</a>.</p>
8414:
8415: </dd>
8416:
8417:
8418: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8419:
8420: <dd>
8421:
8422: <p>Append the literal string <code><!--</code> (U+003C
8423: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8424: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8425: attribute, followed by the literal string <code>--></code>
8426: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8427: SIGN).</p>
8428:
8429: </dd>
8430:
8431:
8432: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8433:
8434: <dd>
8435:
8436: <p>Append the literal string <code><?</code> (U+003C
8437: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8438: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8439: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8440: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8441: character (>).</p>
1.1 mike 8442:
8443: </dd>
8444:
8445:
8446: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8447:
8448: <dd>
8449:
8450: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8451: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8452: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8453: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8454: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8455: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8456: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8457: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8458:
8459: </dd>
8460:
8461:
8462: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8463: occur as children of elements. If, despite this, they somehow do
8464: occur, this algorithm must raise an
8465: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8466:
8467: </li>
8468:
8469: </ol></li>
8470:
8471: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8472:
8473: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8474: purposes of the algorithm above) consists of replacing any
8475: occurrences of the "<code title="">&</code>" character by the
8476: string "<code title="">&amp;</code>", any occurrences of the
8477: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8478: the <i>attribute mode</i>, any occurrences of the "<code title="">"</code>" character by the string "<code title="">&quot;</code>", or if it was not, any occurrences of
8479: the "<code title=""><</code>" character by the string "<code title="">&lt;</code>", any occurrences of the "<code title="">></code>" character by the string "<code title="">&gt;</code>".</p>
8480:
8481: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8482: agent, and are therefore not covered in the algorithm above.</p>
8483:
8484: <p class="note">It is possible that the output of this algorithm, if
8485: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8486: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8487: element to which a <code title="">Comment</code> node has been
8488: appended is serialized and the output is then reparsed, the comment
8489: will end up being displayed in the text field. Similarly, if, as a
8490: result of DOM manipulation, an element contains a comment that
8491: contains the literal string "<code title="">--></code>", then
8492: when the result of serializing the element is parsed, the comment
8493: will be truncated at that point and the rest of the comment will be
8494: interpreted as markup. More examples would be making a
8495: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8496: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8497: contains a <code><a href="semantics.html#the-ul-element">ul</a></code> element (as the <code><a href="semantics.html#the-ul-element">ul</a></code> element's
8498: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8499: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8500:
8501:
1.755 mike 8502: <h3 id="parsing-html-fragments"><span class="secno">8.4 </span>Parsing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8503:
8504: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8505: algorithm</dfn>. The algorithm optionally takes as input an
8506: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8507: parser, as well as <var title="">input</var>, a string to parse, and
8508: returns a list of zero or more nodes.</p>
8509:
8510: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8511: in the parser section are parts that only occur if the parser was
8512: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8513: with such markings for informational purposes only; such markings
8514: have no normative weight. If it is possible for a condition
8515: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8516: parser wasn't created for the purposes of handling this algorithm,
8517: then that is an error in the specification.</p>
8518:
8519: <ol><li>
8520:
8521: <p>Create a new <code>Document</code> node, and mark it as being
8522: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8523:
8524: </li>
8525:
8526: <li>
8527:
8528: <p>If there is a <var title="">context</var> element, and the
8529: <code>Document</code> of the <var title="">context</var> element
8530: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8531: be in <a href="dom.html#quirks-mode">quirks mode</a>. Otherwise, if there is a <var title="">context</var> element, and the <code>Document</code> of
8532: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8533: mode</a>, then let the <code>Document</code> be in
8534: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8535: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8536:
8537: </li>
8538:
8539: <li>
8540:
8541: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8542: the just created <code>Document</code> node.</p>
8543:
8544: </li>
8545:
8546: <li>
8547:
8548: <p>If there is a <var title="">context</var> element, run these
8549: substeps:</p>
8550:
8551: <ol><li>
8552:
1.541 mike 8553: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8554: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8555:
1.159 mike 8556: <dl class="switch"><dt>If it is a <code><a href="semantics.html#the-title-element-0">title</a></code> or <code><a href="forms.html#the-textarea-element">textarea</a></code>
1.1 mike 8557: element</dt>
8558:
1.541 mike 8559: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8560:
8561:
1.672 mike 8562: <dt>If it is a <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="obsolete.html#xmp">xmp</a></code>,
8563: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>, or
1.5 mike 8564: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8565:
1.541 mike 8566: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8567:
8568:
1.672 mike 8569: <dt>If it is a <code><a href="semantics.html#script">script</a></code> element</dt>
8570:
8571: <dd>Switch the tokenizer to the <a href="#script-data-state">script data state</a>.</dd>
8572:
8573:
1.1 mike 8574: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8575:
1.541 mike 8576: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8577: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8578: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8579:
8580:
1.42 mike 8581: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8582:
1.541 mike 8583: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8584: state</a>.</dd>
1.1 mike 8585:
8586:
8587: <dt>Otherwise</dt>
8588:
1.541 mike 8589: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8590:
1.672 mike 8591: </dl><p class="note">For performance reasons, an implementation that
1.756 mike 8592: does not report errors and that uses the actual state machine
8593: described in this specification directly could use the PLAINTEXT
8594: state instead of the RAWTEXT and script data states where those
8595: are mentioned in the list above. Except for rules regarding
8596: parse errors, they are equivalent, since there is no
8597: <a href="#appropriate-end-tag-token">appropriate end tag token</a> in the fragment case, yet
8598: they involve far fewer state transitions.</p>
1.672 mike 8599:
8600: </li>
1.1 mike 8601:
8602: <li>
8603:
1.159 mike 8604: <p>Let <var title="">root</var> be a new <code><a href="semantics.html#the-html-element-0">html</a></code> element
1.1 mike 8605: with no attributes.</p>
8606:
8607: </li>
8608:
8609: <li>
8610:
8611: <p>Append the element <var title="">root</var> to the
8612: <code>Document</code> node created above.</p>
8613:
8614: </li>
8615:
8616: <li>
8617:
8618: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8619: it contains just the single element <var title="">root</var>.</p>
8620:
8621: </li>
8622:
8623: <li>
8624:
8625: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8626: parser's insertion mode appropriately</a>.</p>
8627:
8628: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8629:
8630: </li>
8631:
8632: <li>
8633:
8634: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8635: to the nearest node to the <var title="">context</var> element
8636: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8637: ancestor chain, and including the element itself, if it is a
8638: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8639: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8640:
8641: </li>
8642:
8643: </ol></li>
8644:
8645: <li>
8646:
8647: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8648: parser</a> just created the <var title="">input</var>. The
8649: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8650: <i>irrelevant</i>.</p>
8651:
8652: </li>
8653:
8654: <li>
8655:
8656: <p>Start the parser and let it run until it has consumed all the
8657: characters just inserted into the input stream.</p>
8658:
8659: </li>
8660:
8661: <li>
8662:
8663: <p>If there is a <var title="">context</var> element, return the
8664: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8665: order</a>.</p>
8666:
8667: <p>Otherwise, return the children of the <code>Document</code>
8668: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8669:
8670: </li>
8671:
1.123 mike 8672: </ol></div></body></html>
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