Annotation of html5/spec/syntax.html, revision 1.749
1.2 mike 1: <!DOCTYPE HTML>
1.724 mike 2: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie"><head><title>7 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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15: dd dt { margin-top: 0.25em; margin-bottom: 0; }
16: dd p { margin-top: 0; }
17: dd dl + p { margin-top: 1em; }
18: dd table + p { margin-top: 1em; }
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21: dt dfn { font-style: italic; }
22: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
23: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
24: pre em { font-weight: bolder; font-style: normal; }
25: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
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; }
50: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
51: dl.domintro dd p { margin: 0.5em 0; }
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 {
120: background: #EEEEFF;
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123: padding: 0 1em 0.25em 0.75em;
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132: left: -1.15em;
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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>
1.724 mike 282: <link href="editing.html" title="6 User Interaction" rel="prev">
1.2 mike 283: <link href="spec.html#contents" title="Table of contents" rel="index">
1.724 mike 284: <link href="named-character-references.html" title="7.5 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>
1.724 mike 291: <a href="editing.html">← 6 User Interaction</a> –
1.2 mike 292: <a href="spec.html#contents">Table of contents</a> –
1.724 mike 293: <a href="named-character-references.html">7.5 Named character references →</a>
1.749 ! mike 294: </nav><p>This is revision 1.3714.</p>
1.659 mike 295:
1.1 mike 296:
1.725 mike 297: <h2 id="syntax"><span class="secno">7 </span><dfn>The HTML syntax</dfn></h2><p class="note">This section only describes the rules for resources
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
1.724 mike 300: syntax</a>".</p><h3 id="writing"><span class="secno">7.1 </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
1.724 mike 347: as "case-insensitive".</p><h4 id="the-doctype"><span class="secno">7.1.1 </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
1.724 mike 377: shorter string.</p><h4 id="elements-0"><span class="secno">7.1.2 </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
1.724 mike 474: tag name; tag names are case-insensitive.</p><h5 id="start-tags"><span class="secno">7.1.2.1 </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:
489: <li>After the attributes, there may be one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>. (Some attributes
490: are required to be followed by a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes section</a> below.)</li>
491:
492: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 493: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
1.588 mike 494: element</a>, then there may be a single U+002F SOLIDUS character
495: (/). This character has no effect on <a href="#void-elements">void elements</a>,
496: but on <a href="#foreign-elements">foreign elements</a> it marks the start tag as
497: self-closing.</li>
1.1 mike 498:
499: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
1.588 mike 500: SIGN character (>).</li>
1.1 mike 501:
1.724 mike 502: </ol><h5 id="end-tags"><span class="secno">7.1.2.2 </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 503: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.588 mike 504: SIGN character (<).</li>
1.1 mike 505:
506: <li>The second character of an end tag must be a U+002F SOLIDUS
1.588 mike 507: character (/).</li>
1.1 mike 508:
509: <li>The next few characters of an end tag must be the element's
510: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
511:
512: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
513: character">space characters</a>.</li>
514:
1.588 mike 515: <li>Finally, end tags must be closed by a U+003E GREATER-THAN SIGN
516: character (>).</li>
1.1 mike 517:
1.724 mike 518: </ol><h5 id="attributes"><span class="secno">7.1.2.3 </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 519: 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 520: one or more characters other than the <a href="infrastructure.html#space-character" title="space
521: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
522: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
523: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
524: the control characters, and any characters that are not defined by
1.462 mike 525: Unicode. In the HTML syntax, attribute names, even those for
526: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
527: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 528: 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 529: 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 530: 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 531:
532: <dd>
533:
534: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
535: name</a>.</p>
536:
537: <div class="example">
538:
539: <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
540: the empty attribute syntax:</p>
541:
542: <pre><input <em>disabled</em>></pre>
543:
544: </div>
545:
546: <p>If an attribute using the empty attribute syntax is to be
547: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
548: character</a> separating the two.</p>
549:
550: </dd>
551:
1.2 mike 552: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 553:
554: <dd>
555:
556: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
557: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
558: characters</a>, followed by a single U+003D EQUALS SIGN
559: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
560: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
561: addition to the requirements given above for attribute values,
562: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
1.588 mike 563: characters</a>, any U+0022 QUOTATION MARK characters ("),
564: U+0027 APOSTROPHE characters ('), U+003D EQUALS SIGN
565: characters (=), U+003C LESS-THAN SIGN characters (<), U+003E
566: GREATER-THAN SIGN characters (>), or U+0060 GRAVE ACCENT
567: characters (`), and must not be the empty string.</p>
1.463 mike 568:
569: <!-- The ` character is in this list on a temporary basis, waiting
570: for IE to fix it's parsing bug whereby it treats ` as an
571: attribute value delimiter. Otherwise, escaping software that
572: tries to be clever and not use quotes when it doesn't need to
573: could be tricked by an attacker.
574:
575: Posit a site that allows the user to input text that is used
576: verbatim in two attributes, such that the user can set the
577: first attribute's value to:
578:
579: `
580:
581: ...and the second to:
582:
583: ` onload='...payload...' end=x
584:
585: ...with the assumption that the site is going to not quote
586: the first one, and quote the second one with double quotes:
587:
588: <body title=` class="` onload='...payload...' end=x">
589:
590: In IE, this is treated as:
591:
592: <body title=' class="'
593: onload='...payload...'
594: end='x"'>
595:
596: -->
597:
1.1 mike 598:
599: <div class="example">
600:
601: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
602: with the unquoted attribute value syntax:</p>
603:
604: <pre><input <em>value=yes</em>></pre>
605:
606: </div>
607:
608: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 609: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 610: 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 611: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
612:
613: </dd>
614:
615: <dt>Single-quoted attribute value syntax</dt>
616:
617: <dd>
618:
619: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
620: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
621: characters</a>, followed by a single U+003D EQUALS SIGN
622: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
623: character">space characters</a>, followed by a single U+0027
1.588 mike 624: APOSTROPHE character ('), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 625: addition to the requirements given above for attribute values,
1.588 mike 626: must not contain any literal U+0027 APOSTROPHE characters ('), and
627: finally followed by a second single U+0027 APOSTROPHE character
628: (').</p>
1.1 mike 629:
630: <div class="example">
631:
632: <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
633: single-quoted attribute value syntax:</p>
634:
635: <pre><input <em>type='checkbox'</em>></pre>
636:
637: </div>
638:
639: <p>If an attribute using the single-quoted attribute syntax is to
640: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
641: character</a> separating the two.</p>
642:
643: </dd>
644:
645: <dt>Double-quoted attribute value syntax</dt>
646:
647: <dd>
648:
649: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
650: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
651: characters</a>, followed by a single U+003D EQUALS SIGN
652: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
653: character">space characters</a>, followed by a single U+0022
1.588 mike 654: QUOTATION MARK character ("), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 655: addition to the requirements given above for attribute values,
1.588 mike 656: must not contain any literal U+0022 QUOTATION MARK characters ("),
657: and finally followed by a second single U+0022 QUOTATION MARK
658: character (").</p>
1.1 mike 659:
660: <div class="example">
661:
662: <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
663: double-quoted attribute value syntax:</p>
664:
665: <pre><input <em>name="be evil"</em>></pre>
666:
667: </div>
668:
669: <p>If an attribute using the double-quoted attribute syntax is to
670: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
671: character</a> separating the two.</p>
672:
673: </dd>
674:
675: </dl><p>There must never be two or more attributes on the same start tag
676: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 677: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
678: one of the namespaced attributes given by the local name and
679: namespace of the first and second cells of a row from the following
680: table, it must be written using the name given by the third cell
681: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
1.724 mike 682: </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>
683: </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>
684: </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>
685: </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>
686: </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>
687: </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>
688: </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>
689: </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>
690: </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>
691: </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>
692: </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>
693: </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 694: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in <a href="#syntax">the
1.724 mike 695: HTML syntax</a>.</p><h5 id="optional-tags"><span class="secno">7.1.2.4 </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 696: is not present; it is implied, but it is still there. An HTML
1.159 mike 697: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 698: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 699: 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
700: 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
701: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
702: 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 703: element is empty, or--> if the first thing inside the
1.159 mike 704: <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
705: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
706: 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
707: 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 708: 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 709: 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 710: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
1.724 mike 711: tag is present, the parser makes <style> and <script type="text/javascript"> elements
1.1 mike 712: between </head> and <body> end up in the <head> instead of implying
1.159 mike 713: 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
714: 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 715: 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 716: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
717: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 718: 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 719: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
720: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 721: <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 722: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
723: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
724: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 725: 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 726: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
727: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
728: <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 729: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 730: <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 731: <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>,
732: <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>,
733: <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>,
734: <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>,
735: <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 736: <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>,
737: element, or if there is no more content in the parent element and
1.123 mike 738: 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 739: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
740: 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 741: 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 742: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</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><!-- </optgroup> (the text assumes <optgroup> can only be inside a
1.1 mike 745: <select>; commented out text below can handle the non-<select> case
1.123 mike 746: 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 747: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
748: <code>select</code> element and--> is immediately followed by
749: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
750: that are ancestors of the <code>optgroup</code> element, up to and
751: including the first ancestor element that is not an
752: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 753: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 754: <select><optgroup></select>
755: <p id=x><optgroup></optgroup>x</p>
756: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
757: <p><optgroup id=x><optgroup></optgroup>x</p>
758: <p><optgroup><optgroup id=x>x</p>
1.123 mike 759: --><!-- </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 760: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
761: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
762: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 763: 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 764: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
765: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
766: 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 767: 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 768: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 769: <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 770: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
771: 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 772: 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 773: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
774: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
775: 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
776: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
777: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 778: 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 779: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
780: 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 781: 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 782: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
783: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 784: 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 785: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
786: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 787: 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 788: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
789: 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 790: 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 791: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</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><p><strong>However</strong>, a <a href="#syntax-start-tag" title="syntax-start-tag">start
1.724 mike 794: tag</a> must never be omitted if it has any attributes.</p><h5 id="element-restrictions"><span class="secno">7.1.2.5 </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 795: 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 796: elements, even though these elements are technically allowed inside
797: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
798: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
799: 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 800: 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
801: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 802: 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>
803: elements. This does not affect the processing of the element. The
1.304 mike 804: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 805: <em>must</em> be included if the element's contents themselves start
806: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
807: otherwise the leading newline in the contents would be treated like
808: the optional newline, and ignored).</p><div class="example">
1.1 mike 809: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
810: <pre><pre>Hello</pre></pre>
811: <pre><pre><br>Hello</pre></pre>
1.724 mike 812: </div><h5 id="cdata-rcdata-restrictions"><span class="secno">7.1.2.6 </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 813: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
814: contain any occurrences of the string "<code title=""></</code>"
815: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 816: case-insensitively match the tag name of the element followed by one
817: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 818: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.724 mike 819: GREATER-THAN SIGN (>), or U+002F SOLIDUS (/).</p><h4 id="text"><span class="secno">7.1.3 </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 820: attributes, and comments. Text must consist of Unicode characters.
821: Text must not contain U+0000 characters. Text must not contain
1.316 mike 822: permanently undefined Unicode characters (noncharacters). Text must
823: not contain control characters other than <a href="infrastructure.html#space-character" title="space
824: character">space characters</a>. Extra constraints are placed on
825: what is and what is not allowed in text based on where the text is
1.724 mike 826: to be put, as described in the other sections.</p><h5 id="newlines"><span class="secno">7.1.3.1 </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 827: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
828: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.724 mike 829: U+000A LINE FEED (LF) characters in that order.</p><h4 id="character-references"><span class="secno">7.1.4 </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 830: to escape characters that couldn't otherwise legally be included in
1.588 mike 831: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND character
832: (&). Following this, there are three possible kinds of character
833: references:</p><dl><dt>Named character references</dt>
1.1 mike 834:
835: <dd>The ampersand must be followed by one of the names given in the
836: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
1.677 mike 837: case. <span class="impl">The name must be one that is terminated by
838: a U+003B SEMICOLON character (;).</span></dd>
1.1 mike 839:
840:
841: <dt>Decimal numeric character reference</dt>
842:
843: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 844: character (#), followed by one or more digits in the range U+0030
845: DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing a base-ten
846: integer that corresponds to a Unicode code point that is allowed
847: according to the definition below. The digits must then be followed
848: by a U+003B SEMICOLON character (;).</dd>
1.1 mike 849:
850:
851: <dt>Hexadecimal numeric character reference</dt>
852:
853: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 854: character (#), which must be followed by either a U+0078 LATIN
855: SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL LETTER X
856: character (X), which must then be followed by one or more digits in
857: the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061
858: LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041
859: LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
1.464 mike 860: representing a base-sixteen integer that corresponds to a Unicode
861: code point that is allowed according to the definition below. The
862: digits must then be followed by a U+003B SEMICOLON character
863: (;).</dd>
1.378 mike 864:
865: </dl><p>The numeric character reference forms described above are allowed
866: to reference any Unicode code point other than U+0000, permanently
867: undefined Unicode characters (noncharacters), and control characters
868: other than <a href="infrastructure.html#space-character" title="space character">space
869: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 870: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
871: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
872: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
1.724 mike 873: (<), or another U+0026 AMPERSAND character (&).</p><h4 id="cdata-sections"><span class="secno">7.1.5 </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 874: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
875: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
876: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
877: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
878: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
879: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
880: that the text must not contain the three character sequence U+005D
881: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
882: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
883: section must be ended by the three character sequence U+005D RIGHT
884: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.724 mike 885: SIGN (<code title="">]]></code>).</p><div class="example">
886:
887: <p>CDATA sections can only be used in foreign content (MathML or
888: SVG). In this example, a CDATA section is used to escape the
889: contents of an <code>ms</code> element:</p>
890:
891: <pre><p>You can add a string to a number, but this stringifies the number:</p>
892: <math>
893: <ms><![CDATA[x<y]]></ms>
894: <mo>+</mo>
895: <mn>3</mn>
896: <mo>=</mo>
897: <ms><![CDATA[x<y3]]></ms>
898: </math></pre>
899:
900: </div><h4 id="comments"><span class="secno">7.1.6 </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 901: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
902: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
903: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
904: restriction that the text must not start with a single U+003E
1.588 mike 905: GREATER-THAN SIGN character (>), nor start with a U+002D
906: HYPHEN-MINUS character (-) followed by a U+003E GREATER-THAN SIGN
907: (>) character, nor contain two consecutive U+002D HYPHEN-MINUS
908: characters (<code title="">--</code>), nor end with a U+002D
909: HYPHEN-MINUS character (-). Finally, the comment must be ended by
1.1 mike 910: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 911: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 912:
1.724 mike 913: <h3 id="parsing"><span class="secno">7.2 </span>Parsing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 914:
915: <p><i>This section only applies to user agents, data mining tools,
916: and conformance checkers.</i></p>
917:
918: <p class="note">The rules for parsing XML documents into DOM trees
919: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
920: syntax</a>".</p>
921:
922: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
923: rules described in this section to generate the DOM trees. Together,
924: these rules define what is referred to as the <dfn id="html-parser">HTML
925: parser</dfn>.</p>
926:
927: <div class="note">
928:
929: <p>While the HTML syntax described in this specification bears a
930: close resemblance to SGML and XML, it is a separate language with
931: its own parsing rules.</p>
932:
1.183 mike 933: <p>Some earlier versions of HTML (in particular from HTML2 to
934: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 935: (if any) web browsers ever implemented true SGML parsing for HTML
936: documents; the only user agents to strictly handle HTML as an SGML
937: application have historically been validators. The resulting
938: confusion — with validators claiming documents to have one
939: representation while widely deployed Web browsers interoperably
940: implemented a different representation — has wasted decades
941: of productivity. This version of HTML thus returns to a non-SGML
942: basis.</p>
943:
944: <p>Authors interested in using SGML tools in their authoring
945: pipeline are encouraged to use XML tools and the XML serialization
946: of HTML.</p>
947:
948: </div>
949:
950: <p>This specification defines the parsing rules for HTML documents,
951: whether they are syntactically correct or not. Certain points in the
952: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
953: errors</dfn>. The error handling for parse errors is well-defined:
954: user agents must either act as described below when encountering
955: such problems, or must abort processing at the first error that they
956: encounter for which they do not wish to apply the rules described
957: below.</p>
958:
959: <p>Conformance checkers must report at least one parse error
960: condition to the user if one or more parse error conditions exist in
961: the document and must not report parse error conditions if none
962: exist in the document. Conformance checkers may report more than one
1.174 mike 963: parse error condition if more than one parse error condition exists
1.1 mike 964: in the document. Conformance checkers are not required to recover
965: from parse errors.</p>
966:
967: <p class="note">Parse errors are only errors with the
968: <em>syntax</em> of HTML. In addition to checking for parse errors,
969: conformance checkers will also verify that the document obeys all
970: the other conformance requirements described in this
971: specification.</p>
972:
973: <p>For the purposes of conformance checkers, if a resource is
974: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
975: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
976:
1.266 mike 977: </div><div class="impl">
1.1 mike 978:
1.724 mike 979: <h4 id="overview-of-the-parsing-model"><span class="secno">7.2.1 </span>Overview of the parsing model</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 980:
981: <p>The input to the HTML parsing process consists of a stream of
982: Unicode characters, which is passed through a
983: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
984: construction</a> stage. The output is a <code>Document</code>
985: object.</p>
986:
987: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
988: support scripting</a> do not have to actually create a DOM
989: <code>Document</code> object, but the DOM tree in such cases is
990: still used as the model for the rest of the specification.</p>
991:
992: <p>In the common case, the data handled by the tokenization stage
1.159 mike 993: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
994: 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 995:
1.724 mike 996: <p><img alt="" src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png"></p>
1.1 mike 997:
998: <p id="nestedParsing">There is only one set of states for the
999: tokenizer stage and the tree construction stage, but the tree
1000: construction stage is reentrant, meaning that while the tree
1001: construction stage is handling one token, the tokenizer might be
1002: resumed, causing further tokens to be emitted and processed before
1003: the first token's processing is complete.</p>
1004:
1005: <div class="example">
1006:
1007: <p>In the following example, the tree construction stage will be
1008: called upon to handle a "p" start tag token while handling the
1009: "script" start tag token:</p>
1010:
1011: <pre>...
1012: <script>
1013: document.write('<p>');
1014: </script>
1015: ...</pre>
1016:
1017: </div>
1018:
1019: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
1020: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
1021: pause flag</dfn>, which must be initially set to false.</p>
1022:
1.266 mike 1023: </div><div class="impl">
1.1 mike 1024:
1.724 mike 1025: <h4 id="the-input-stream"><span class="secno">7.2.2 </span>The <dfn>input stream</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1026:
1027: <p>The stream of Unicode characters that comprises the input to the
1028: tokenization stage will be initially seen by the user agent as a
1029: stream of bytes (typically coming over the network or from the local
1030: file system). The bytes encode the actual characters according to a
1031: particular <em>character encoding</em>, which the user agent must
1032: use to decode the bytes into characters.</p>
1033:
1034: <p class="note">For XML documents, the algorithm user agents must
1035: use to determine the character encoding is given by the XML
1.104 mike 1036: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 1037:
1038:
1.724 mike 1039: <h5 id="determining-the-character-encoding"><span class="secno">7.2.2.1 </span>Determining the character encoding</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1040:
1041: <p>In some cases, it might be impractical to unambiguously determine
1042: the encoding before parsing the document. Because of this, this
1043: specification provides for a two-pass mechanism with an optional
1044: pre-scan. Implementations are allowed, as described below, to apply
1045: a simplified parsing algorithm to whatever bytes they have available
1046: before beginning to parse the document. Then, the real parser is
1047: started, using a tentative encoding derived from this pre-parse and
1048: other out-of-band metadata. If, while the document is being loaded,
1049: the user agent discovers an encoding declaration that conflicts with
1050: this information, then the parser can get reinvoked to perform a
1051: parse of the document with the real encoding.</p>
1052:
1053: <p id="documentEncoding">User agents must use the following
1054: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
1055: the character encoding to use when decoding a document in the first
1056: pass. This algorithm takes as input any out-of-band metadata
1057: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
1058: and all the bytes available so far, and returns an encoding and a
1059: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
1060: confidence is either <i>tentative</i>, <i>certain</i>, or
1061: <i>irrelevant</i>. The encoding used, and whether the confidence in
1062: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
1063: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
1064: encoding is necessary, e.g. because the parser is operating on a
1065: stream of Unicode characters and doesn't have to use an encoding at
1066: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
1067: <i>irrelevant</i>.</p>
1068:
1069: <ol><li><p>If the transport layer specifies an encoding, and it is
1070: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1071: <i>certain</i>, and abort these steps.</p></li>
1072:
1073: <li><p>The user agent may wait for more bytes of the resource to be
1074: available, either in this step or at any later step in this
1075: algorithm. For instance, a user agent might wait 500ms or 512
1076: bytes, whichever came first. In general preparsing the source to
1077: find the encoding improves performance, as it reduces the need to
1078: throw away the data structures used when parsing upon finding the
1079: encoding information. However, if the user agent delays too long to
1080: obtain data to determine the encoding, then the cost of the delay
1081: could outweigh any performance improvements from the
1082: preparse.</p></li>
1083:
1084: <li><p>For each of the rows in the following table, starting with
1085: the first one and going down, if there are as many or more bytes
1086: available than the number of bytes in the first column, and the
1087: first bytes of the file match the bytes given in the first column,
1088: then return the encoding given in the cell in the second column of
1089: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1090: <i>certain</i>, and abort these steps:</p>
1091:
1092: <!-- this table is present in several forms in this file; keep them in sync -->
1093: <table><thead><tr><th>Bytes in Hexadecimal
1094: </th><th>Encoding
1095: </th></tr></thead><tbody><!-- nobody uses this
1096: <tr>
1097: <td>00 00 FE FF
1098: <td>UTF-32BE
1099: <tr>
1100: <td>FF FE 00 00
1101: <td>UTF-32LE
1102: --><tr><td>FE FF
1103: </td><td>UTF-16BE
1104: </td></tr><tr><td>FF FE
1105: </td><td>UTF-16LE
1106: </td></tr><tr><td>EF BB BF
1107: </td><td>UTF-8
1108: <!-- nobody uses this
1109: <tr>
1110: <td>DD 73 66 73
1111: <td>UTF-EBCDIC
1112: -->
1113: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1114: (BOMs).</p></li>
1115:
1116: <li><p>Otherwise, the user agent will have to search for explicit
1117: character encoding information in the file itself. This should
1118: proceed as follows:
1119:
1120: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1121: input stream, initially pointing at the first byte. If at any
1122: point during these substeps the user agent either runs out of
1123: bytes or decides that scanning further bytes would not be
1124: efficient, then skip to the next step of the overall character
1125: encoding detection algorithm. User agents may decide that scanning
1126: <em>any</em> bytes is not efficient, in which case these substeps
1127: are entirely skipped.</p>
1128:
1129: <p>Now, repeat the following "two" steps until the algorithm
1130: aborts (either because user agent aborts, as described above, or
1131: because a character encoding is found):</p>
1132:
1133: <ol><li><p>If <var title="">position</var> points to:</p>
1134:
1135: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1136: <dd>
1137:
1138: <p>Advance the <var title="">position</var> pointer so that it
1139: points at the first 0x3E byte which is preceded by two 0x2D
1140: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1141: after the 0x3C byte that was found. (The two 0x2D bytes can be
1142: the same as the those in the '<!--' sequence.)</p>
1143:
1144: </dd>
1145:
1146: <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>
1147: <dd>
1148:
1149: <ol><li><p>Advance the <var title="">position</var> pointer so
1150: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1151: 0x2F byte (the one in sequence of characters matched
1152: above).</p></li>
1153:
1154: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1155: an attribute</a> and its value. If no attribute was
1156: sniffed, then skip this inner set of steps, and jump to the
1157: second step in the overall "two step" algorithm.</p></li>
1158:
1159: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1160: then return to step 2 in these inner steps.</p></li>
1161:
1162: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1163: the attribute's value, interpreted as a character
1164: encoding.</p></li>
1165:
1166: <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
1167: extracting an encoding from a Content-Type</a>, giving the
1168: attribute's value as the string to parse. If an encoding is
1169: returned, let <var title="">charset</var> be that
1170: encoding. Otherwise, return to step 2 in these inner
1171: steps.</p></li>
1172:
1173: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1174: change the value of <var title="">charset</var> to
1175: UTF-8.</p></li>
1176:
1177: <li><p>If <var title="">charset</var> is a supported
1178: character encoding, then return the given encoding, with
1179: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1180: <i>tentative</i>, and abort all these steps.</p></li>
1181:
1182: <li><p>Otherwise, return to step 2 in these inner
1183: steps.</p></li>
1184:
1185: </ol></dd>
1186:
1.464 mike 1187: <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 1188: <dd>
1189:
1190: <ol><li><p>Advance the <var title="">position</var> pointer so
1191: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1192: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1193: (ASCII >) byte.</p></li>
1.1 mike 1194:
1195: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1196: attribute</a> until no further attributes can be found,
1197: then jump to the second step in the overall "two step"
1198: algorithm.</p></li>
1199:
1200: </ol></dd>
1201:
1202: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1203: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1204: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1205: <dd>
1206:
1207: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1208: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1209: 0x3C byte that was found.</p>
1210:
1211: </dd>
1212:
1213: <dt>Any other byte</dt>
1214: <dd>
1215:
1216: <p>Do nothing with that byte.</p>
1217:
1218: </dd>
1219:
1220: </dl></li>
1221:
1222: <li>Move <var title="">position</var> so it points at the next
1223: byte in the input stream, and return to the first step of this
1224: "two step" algorithm.</li>
1225:
1226: </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
1227: attribute</dfn>, it means doing this:</p>
1228:
1229: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1230: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1231: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1232: substep.</p></li>
1233:
1234: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1235: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1236: one.</p></li>
1237:
1238: <li><p>Otherwise, the byte at <var title="">position</var> is the
1239: start of the attribute name. Let <var title="">attribute
1240: name</var> and <var title="">attribute value</var> be the empty
1241: string.</p></li>
1242:
1243: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1244:
1.464 mike 1245: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1246: name</var> is longer than the empty string</dt>
1247:
1248: <dd>Advance <var title="">position</var> to the next byte and
1249: jump to the step below labeled <i>value</i>.</dd>
1250:
1251: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1252: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1253:
1254: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1255:
1.464 mike 1256: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1257:
1258: <dd>Abort the "get an attribute" algorithm. The attribute's
1259: name is the value of <var title="">attribute name</var>, its
1260: value is the empty string.</dd>
1261:
1.464 mike 1262: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1263: Z)</dt>
1.1 mike 1264:
1265: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1266: name</var> (where <var title="">b</var> is the value of the
1267: byte at <var title="">position</var>).</dd>
1268:
1269: <dt>Anything else</dt>
1270:
1271: <dd>Append the Unicode character with the same code point as the
1272: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1273: bytes outside the ASCII range are handled here, since only
1274: ASCII characters can contribute to the detection of a character
1275: encoding.)</dd>
1276:
1277: </dl></li>
1278:
1279: <li><p>Advance <var title="">position</var> to the next byte and
1280: return to the previous step.</p></li>
1281:
1282: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1283: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1284: advance <var title="">position</var> to the next byte, then,
1285: repeat this step.</p></li>
1286:
1287: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1288: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1289: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1290: string.</p></li>
1291:
1292: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1293: =) byte.</p></li>
1.1 mike 1294:
1295: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1296: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1297: advance <var title="">position</var> to the next byte, then,
1298: repeat this step.</p></li>
1299:
1300: <li><p>Process the byte at <var title="">position</var> as
1301: follows:</p>
1302:
1.464 mike 1303: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1304:
1305: <dd>
1306:
1307: <ol><li>Let <var title="">b</var> be the value of the byte at
1308: <var title="">position</var>.</li>
1309:
1310: <li>Advance <var title="">position</var> to the next
1311: byte.</li>
1312:
1313: <li>If the value of the byte at <var title="">position</var>
1314: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1315: an attribute" algorithm. The attribute's name is the value of
1316: <var title="">attribute name</var>, and its value is the
1317: value of <var title="">attribute value</var>.</li>
1318:
1.464 mike 1319: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1320: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1321: than the value of the byte at <var title="">position</var>.</li>
1322:
1323: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1324: the value of the byte at <var title="">position</var>.</li>
1325:
1326: <li>Return to the second step in these substeps.</li>
1327:
1328: </ol></dd>
1329:
1.464 mike 1330: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1331:
1332: <dd>Abort the "get an attribute" algorithm. The attribute's
1333: name is the value of <var title="">attribute name</var>, its
1334: value is the empty string.</dd>
1335:
1336:
1.464 mike 1337: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1338: Z)</dt>
1.1 mike 1339:
1340: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1341: value</var> (where <var title="">b</var> is the value of the
1342: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1343:
1344: <dt>Anything else</dt>
1345:
1346: <dd>Append the Unicode character with the same code point as the
1347: 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>
1348:
1349: </dl></li>
1350:
1351: <li><p>Process the byte at <var title="">position</var> as
1352: follows:</p>
1353:
1354: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1355: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1356: >)</dt>
1.1 mike 1357:
1358: <dd>Abort the "get an attribute" algorithm. The attribute's
1359: name is the value of <var title="">attribute name</var> and its
1360: value is the value of <var title="">attribute value</var>.</dd>
1361:
1.464 mike 1362: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1363: Z)</dt>
1.1 mike 1364:
1365: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1366: value</var> (where <var title="">b</var> is the value of the
1367: byte at <var title="">position</var>).</dd>
1368:
1369: <dt>Anything else</dt>
1370:
1371: <dd>Append the Unicode character with the same code point as the
1372: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1373:
1374: </dl></li>
1375:
1376: <li><p>Advance <var title="">position</var> to the next byte and
1377: return to the previous step.</p></li>
1378:
1379: </ol><p>For the sake of interoperability, user agents should not use a
1380: pre-scan algorithm that returns different results than the one
1381: described above. (But, if you do, please at least let us know, so
1382: that we can improve this algorithm and benefit everyone...)</p>
1383:
1384: </li>
1385:
1386: <li><p>If the user agent has information on the likely encoding for
1387: this page, e.g. based on the encoding of the page when it was last
1388: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1389: <i>tentative</i>, and abort these steps.</p></li>
1390:
1.322 mike 1391: <li>
1392:
1393: <p>The user agent may attempt to autodetect the character encoding
1394: from applying frequency analysis or other algorithms to the data
1.568 mike 1395: stream. Such algorithms may use information about the resource
1396: other than the resource's contents, including the address of the
1397: resource. If autodetection succeeds in determining a character
1.322 mike 1398: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1399: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1400:
1401: <p class="note">The UTF-8 encoding has a highly detectable bit
1402: pattern. Documents that contain bytes with values greater than
1403: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1404: while documents with byte sequences that do not match it are very
1405: likely not. User-agents are therefore encouraged to search for
1.485 mike 1406: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1407:
1408: </li>
1.1 mike 1409:
1.501 mike 1410: <li>
1411:
1412: <p>Otherwise, return an implementation-defined or user-specified
1413: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1414: <i>tentative</i>.</p>
1415:
1416: <p>In controlled environments or in environments where the
1417: encoding of documents can be prescribed (for example, for user
1418: agents intended for dedicated use in new networks), the
1419: comprehensive <code title="">UTF-8</code> encoding is
1420: suggested.</p>
1421:
1422: <p>In other environments, the default encoding is typically
1423: dependent on the user's locale (an approximation of the languages,
1424: and thus typically encodings, of the pages that the user is likely
1425: to frequent). The following table gives suggested defaults based
1.504 mike 1426: on the user's locale, for compatibility with legacy
1427: content. Locales are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1428:
1429: <!-- based on mozilla 1.9.1 localizations:
1430: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1431:
1.504 mike 1432: <table><thead><tr><th>Locale language
1.501 mike 1433: </th><th>Suggested default encoding
1434: </th></tr></thead><tbody><tr><td>ar
1435: </td><td>UTF-8
1436:
1437: </td></tr><tr><td>be
1438: </td><td>ISO-8859-5
1439:
1440: </td></tr><tr><td>bg
1441: </td><td>windows-1251
1442:
1443: </td></tr><tr><td>cs<!-- -CZ -->
1444: </td><td>ISO-8859-2
1445:
1446: </td></tr><tr><td>cy
1447: </td><td>UTF-8
1448:
1449: </td></tr><tr><td>fa<!-- -IR -->
1450: </td><td>UTF-8
1451:
1452: </td></tr><tr><td>he<!-- -IL -->
1453: </td><td>windows-1255
1454:
1455: </td></tr><tr><td>hr
1456: </td><td>UTF-8
1457:
1458: </td></tr><tr><td>hu<!-- -HU -->
1459: </td><td>ISO-8859-2
1460:
1461: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1462: </td><td>windows-31J <!-- Shift_JIS -->
1463:
1464: </td></tr><tr><td>kk
1465: </td><td>UTF-8
1466:
1467: </td></tr><tr><td>ko<!-- -KR -->
1468: </td><td>windows-949 <!-- EUC-KR -->
1469:
1470: </td></tr><tr><td>ku
1471: </td><td>windows-1254 <!-- ISO-8859-9 -->
1472:
1473: </td></tr><tr><td>lt
1474: </td><td>windows-1257
1475:
1476: </td></tr><tr><td>lv<!-- -LV -->
1477: </td><td>ISO-8859-13
1478:
1479: </td></tr><tr><td>mk<!-- -MK -->
1480: </td><td>UTF-8
1481:
1482: </td></tr><tr><td>or
1483: </td><td>UTF-8
1484:
1485: </td></tr><tr><td>pl<!-- -PL -->
1486: </td><td>ISO-8859-2
1487:
1488: </td></tr><tr><td>ro
1489: </td><td>UTF-8
1490:
1491: </td></tr><tr><td>ru
1492: </td><td>windows-1251
1493:
1494: </td></tr><tr><td>sk
1495: </td><td>windows-1250
1496:
1497: </td></tr><tr><td>sl
1498: </td><td>ISO-8859-2
1499:
1500: </td></tr><tr><td>sr
1501: </td><td>UTF-8
1502:
1503: </td></tr><tr><td>th
1504: </td><td>windows-874 <!-- TIS-620 -->
1505:
1506: </td></tr><tr><td>tr<!-- -TR -->
1507: </td><td>windows-1254 <!-- ISO-8859-9 -->
1508:
1.503 mike 1509: </td></tr><tr><td>uk
1.501 mike 1510: </td><td>windows-1251
1511:
1512: </td></tr><tr><td>vi
1513: </td><td>UTF-8
1514:
1515: </td></tr><tr><td>zh-CN
1516: </td><td>GB18030
1517:
1518: </td></tr><tr><td>zh-TW
1519: </td><td>Big5
1520:
1521: </td></tr><tr><td>All other locales
1522: </td><td>windows-1252
1523:
1524: </td></tr></tbody></table></li>
1.1 mike 1525:
1526: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1527: be set to the value returned from this algorithm, at the same time
1528: as the user agent uses the returned value to select the decoder to
1529: use for the input stream.</p>
1530:
1.582 mike 1531: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1532: of the HTTP specification, which requires that the encoding be
1533: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1.647 mike 1534: encoding declaration</a> to the contrary, and of RFC 2046,
1.582 mike 1535: which requires that the encoding be assumed to be US-ASCII in the
1536: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1537: contrary. This specification's third approach is motivated by a
1538: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1539:
1.1 mike 1540:
1.724 mike 1541: <h5 id="character-encodings-0"><span class="secno">7.2.2.2 </span>Character encodings</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1542:
1.237 mike 1543: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1544: encodings, but may support more.</p>
1545:
1546: <p class="note">It is not unusual for Web browsers to support dozens
1547: if not upwards of a hundred distinct character encodings.</p>
1548:
1.365 mike 1549: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1550: every character encoding they support, and should support all the
1551: IANA-registered names and aliases of every character encoding they
1552: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1553:
1554: <p>When comparing a string specifying a character encoding with the
1555: name or alias of a character encoding to determine if they are
1556: 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
1557: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1558: case-insensitive</a> manner.</p>
1559:
1.539 mike 1560: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1561: first column of the following table to either convert content to
1562: Unicode characters or convert Unicode characters to bytes, it must
1563: instead use the encoding given in the cell in the second column of
1564: the same row. When a byte or sequence of bytes is treated
1565: differently due to this encoding aliasing, it is said to have been
1566: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1567:
1568: <table><caption>Character encoding overrides</caption>
1569: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1570: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1571: <a href="references.html#refsEUCKR">[EUCKR]</a>
1572: <a href="references.html#refsWIN949">[WIN949]</a>
1573: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1574: <a href="references.html#refsRFC1345">[RFC1345]</a>
1575: <a href="references.html#refsGBK">[GBK]</a>
1576: </td></tr><tr><td> GB_2312-80 </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> ISO-8859-1 </td><td> windows-1252 </td><td>
1580: <a href="references.html#refsRFC1345">[RFC1345]</a>
1581: <a href="references.html#refsWIN1252">[WIN1252]</a>
1582: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1583: <a href="references.html#refsRFC1345">[RFC1345]</a>
1584: <a href="references.html#refsWIN1254">[WIN1254]</a>
1585: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1586: <a href="references.html#refsISO885911">[ISO885911]</a>
1587: <a href="references.html#refsWIN874">[WIN874]</a>
1588: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1589: <a href="references.html#refsRFC1345">[RFC1345]</a>
1590: <a href="references.html#refsWIN949">[WIN949]</a>
1591: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1592: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1593: <a href="references.html#refsWIN31J">[WIN31J]</a>
1594: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1595: <a href="references.html#refsTIS620">[TIS620]</a>
1596: <a href="references.html#refsWIN874">[WIN874]</a>
1597: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1598: <a href="references.html#refsRFC1345">[RFC1345]</a>
1599: <a href="references.html#refsWIN1252">[WIN1252]</a>
1600: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1601: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1602: violation</a> of the W3C Character Model specification, motivated
1603: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1604:
1605: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1606: been found, user agents must default to UTF-16LE.</p>
1607:
1608: <p class="note">The requirement to default UTF-16 to LE rather than
1609: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1610: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1611:
1612: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1613: 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>
1614:
1615: <p>Support for encodings based on EBCDIC is not recommended. This
1616: encoding is rarely used for publicly-facing Web content.</p>
1617:
1618: <p>Support for UTF-32 is not recommended. This encoding is rarely
1619: used, and frequently implemented incorrectly.</p>
1620:
1621: <p class="note">This specification does not make any attempt to
1622: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1623: and use of these encodings can thus lead to unexpected behavior in
1624: implementations of this specification.</p>
1625:
1626:
1627:
1.724 mike 1628: <h5 id="preprocessing-the-input-stream"><span class="secno">7.2.2.3 </span>Preprocessing the input stream</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1629:
1630: <p>Given an encoding, the bytes in the input stream must be
1631: converted to Unicode characters for the tokenizer, as described by
1632: the rules for that encoding, except that the leading U+FEFF BYTE
1633: ORDER MARK character, if any, must not be stripped by the encoding
1634: layer (it is stripped by the rule below).</p> <!-- this is to
1635: prevent two leading BOMs from being both stripped, once by the
1636: decoder, and once by the parser -->
1637:
1638: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1639: could not be converted to Unicode code points must be converted to
1640: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1641:
1642: <p class="note">Bytes or sequences of bytes in the original byte
1643: stream that did not conform to the encoding specification
1644: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1645: errors that conformance checkers are expected to report.</p>
1646:
1.438 mike 1647: <p>Any byte or sequence of bytes in the original byte stream that is
1648: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1649: error</a>.</p>
1650:
1651: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1652: any are present.</p>
1653:
1.300 mike 1654: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1655: character regardless of whether that character was used to determine
1656: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1657: motivated by a desire to increase the resilience of user agents in
1658: the face of naïve transcoders.</p>
1659:
1.316 mike 1660: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1661: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1662: them to suddenly turn into codepoints when they go through a UTF-16
1663: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1664: CHARACTERs. Any occurrences of such characters and code points are
1665: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1666:
1667: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1668: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1669: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1670: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1671: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1672: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1673: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1674: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1675: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1676: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1677: errors</a>. These are all control characters or permanently
1678: undefined Unicode characters (noncharacters).</p>
1.1 mike 1679:
1680: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1681: characters are treated specially. Any CR characters that are
1682: followed by LF characters must be removed, and any CR characters not
1683: followed by LF characters must be converted to LF characters. Thus,
1684: newlines in HTML DOMs are represented by LF characters, and there
1685: are never any CR characters in the input to the
1686: <a href="#tokenization">tokenization</a> stage.</p>
1687:
1688: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1689: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1690: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1691: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1692: to have been <i><a href="#consumed">consumed</a></i>.</p>
1693:
1694: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1695: character or just before the end of the input stream) where content
1.159 mike 1696: 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 1697: inserted. The insertion point is relative to the position of the
1698: character immediately after it, it is not an absolute offset into
1699: the input stream. Initially, the insertion point is
1.10 mike 1700: undefined.</p>
1.1 mike 1701:
1702: <p>The "EOF" character in the tables below is a conceptual character
1703: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1704: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1705: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1706: 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 1707: consumed. Otherwise, the "EOF" character is not a real character in
1708: the stream, but rather the lack of any further characters.</p>
1709:
1710:
1.724 mike 1711: <h5 id="changing-the-encoding-while-parsing"><span class="secno">7.2.2.4 </span>Changing the encoding while parsing</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1712:
1713: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1714: encoding</dfn>, it must run the following steps. This might happen
1715: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1716: failed to find an encoding, or if it found an encoding that was not
1717: the actual encoding of the file.</p>
1718:
1719: <ol><li>If the new encoding is identical or equivalent to the encoding
1720: that is already being used to interpret the input stream, then set
1721: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1722: <i>certain</i> and abort these steps. This happens when the
1723: encoding information found in the file matches what the
1724: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1725: encoding, and in the second pass through the parser if the first
1726: pass found that the encoding sniffing algorithm described in the
1727: earlier section failed to find the right encoding.</li>
1728:
1729: <li>If the encoding that is already being used to interpret the
1730: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1731: <i>certain</i> and abort these steps. The new encoding is ignored;
1732: if it was anything but the same encoding, then it would be clearly
1733: incorrect.</li>
1734:
1735: <li>If the new encoding is a UTF-16 encoding, change it to
1736: UTF-8.</li>
1737:
1738: <li>If all the bytes up to the last byte converted by the current
1739: decoder have the same Unicode interpretations in both the current
1740: encoding and the new encoding, and if the user agent supports
1741: changing the converter on the fly, then the user agent may change
1742: to the new converter for the encoding on the fly. Set the
1743: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1744: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1745: <i>certain</i>, and abort these steps.</li>
1746:
1747: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1748: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1749: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1750: sniffing algorithm</a> and instead just set the encoding to the
1751: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1752: <i>certain</i>. Whenever possible, this should be done without
1753: actually contacting the network layer (the bytes should be
1754: re-parsed from memory), even if, e.g., the document is marked as
1755: not being cacheable. If this is not possible and contacting the
1756: network layer would involve repeating a request that uses a method
1757: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1758: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1759: <i>certain</i> and ignore the new encoding. The resource will be
1760: misinterpreted. User agents may notify the user of the situation,
1761: to aid in application development.</li>
1762:
1.266 mike 1763: </ol></div><div class="impl">
1764:
1.724 mike 1765: <h4 id="parse-state"><span class="secno">7.2.3 </span>Parse state</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1766:
1.724 mike 1767: <h5 id="the-insertion-mode"><span class="secno">7.2.3.1 </span>The insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1768:
1769: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1770: the primary operation of the tree construction stage.</p>
1771:
1772: <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
1773: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1774: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1775: "<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 1776: "<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 1777: "<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>",
1778: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1779: "<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
1780: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1781: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1782: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1783: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1784: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1785: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1786: frameset</a>" during the course of the parsing, as described in
1787: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1788: how tokens are processed and whether CDATA sections are
1789: supported.</p>
1790:
1791: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1792: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1793: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1794: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1795: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1796: "<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
1797: that the other modes defer to them at various times. When the
1798: algorithm below says that the user agent is to do something
1799: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1800: mode", where <var title="">m</var> is one of these modes, the user
1801: agent must use the rules described under the <var title="">m</var>
1802: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1803: <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>
1804: to a new value.</p>
1805:
1806: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1807: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1808: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1809: is also set. This is the insertion mode to which the tree
1810: construction stage will return.</p>
1.1 mike 1811:
1812: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1813: mode: in foreign content">in foreign content</a>", the
1814: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1815: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1816: foreign content">in foreign content</a>" mode to handle HTML
1817: (i.e. not foreign) content.</p>
1818:
1819: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1820: mode appropriately</dfn>, it means the UA must follow these
1821: steps:</p>
1822:
1823: <ol><li>Let <var title="">last</var> be false.</li>
1824:
1.604 mike 1825: <li>Let <var title="">foreign</var> be false.</li>
1826:
1.1 mike 1827: <li>Let <var title="">node</var> be the last node in the
1828: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1829:
1.604 mike 1830: <li><i>Loop</i>: If <var title="">node</var> is the first node in
1831: the stack of open elements, then set <var title="">last</var> to
1832: 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 1833:
1834: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1.604 mike 1835: 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
1836: step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1837:
1838: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1839: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1840: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1.604 mike 1841: mode: in cell">in cell</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1842:
1843: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1844: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1.604 mike 1845: mode: in row">in row</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1846:
1847: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1848: <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
1849: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1.604 mike 1850: table body">in table body</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1851:
1852: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1.604 mike 1853: 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
1854: the step marked <i title="">end</i>.</li>
1.1 mike 1855:
1856: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1857: 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 1858: jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1859: case</a>)</li>
1.1 mike 1860:
1861: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1.604 mike 1862: 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
1863: step marked <i title="">end</i>.</li>
1.1 mike 1864:
1.159 mike 1865: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.604 mike 1866: 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
1867: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1868: case</a>)</li> <!-- This is only here for now in case people
1869: think that the spec accidentally omitted it and try to "fix"
1870: it. Note that noscript-in-head is also handled this way. This is
1871: all intentional. The only thing it doesn't handle is the
1872: scripting-disabled fragment parsing case for a <head> element
1873: containing a <noscript> which itself contains something other than
1874: a <link> or a <style> element; you'd expect that to break out of
1875: the <noscript> but it doesn't. This is an edge case that doesn't
1876: affect the spec, since the algorithm for fragment parsing is only
1877: used for innerHTML/outerHTML/insertAdjacentHTML(), where we know
1878: scripting is enabled. -->
1.1 mike 1879:
1.159 mike 1880: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.604 mike 1881: 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
1882: step marked <i title="">end</i>.</li>
1.1 mike 1883:
1.5 mike 1884: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.604 mike 1885: 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
1886: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1887: case</a>)</li>
1.1 mike 1888:
1.159 mike 1889: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1890: then <!--: if the <span><code title="">head</code> element
1891: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1892: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1893: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1894: to "<span title="insertion mode: after head">after head</span>".-->
1.604 mike 1895: Then, <!-- in either case, --> jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li> <!-- if the
1896: head element pointer can ever be non-null when we're going through
1897: these steps, we'll need to uncomment out the commented-out bits -->
1898:
1.724 mike 1899: <li>If <var title="">node</var> is an element from the <a href="infrastructure.html#mathml-namespace">MathML
1900: namespace</a> or the <a href="infrastructure.html#svg-namespace">SVG namespace</a>, then set the
1.604 mike 1901: <var title="">foreign</var> flag to true.</li>
1.1 mike 1902:
1903: <li>If <var title="">last</var> is true, then switch the
1904: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1.604 mike 1905: 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 1906:
1907: <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
1908: elements</a>.</li>
1909:
1.604 mike 1910: <li>Return to the step marked <i>loop</i>.</li>
1911:
1912: <li><i>End</i>: If <var title="">foreign</var> is true, switch the
1913: <a href="#secondary-insertion-mode">secondary insertion mode</a> to whatever the
1914: <a href="#insertion-mode">insertion mode</a> is set to, and switch the
1915: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1916: foreign content">in foreign content</a>".</li>
1.1 mike 1917:
1.724 mike 1918: </ol><h5 id="the-stack-of-open-elements"><span class="secno">7.2.3.2 </span>The stack of open elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1919:
1920: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1921: stack grows downwards; the topmost node on the stack is the first
1922: one added to the stack, and the bottommost node of the stack is the
1923: most recently added node in the stack (notwithstanding when the
1924: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1925:
1926: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1927: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1928: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1929: stack.</p>
1930:
1931: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1932: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1933: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1934: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1935: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1936: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1937:
1.159 mike 1938: <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 1939: node of the stack. It never gets popped off the stack.</p>
1940:
1941: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1942: stack.</p>
1943:
1944: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1945: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1946: 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
1947: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1948: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1949: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1950:
1951: <p>Elements in the stack fall into the following categories:</p>
1952:
1953: <dl><dt><dfn id="special">Special</dfn></dt>
1954:
1955: <dd><p>The following HTML elements have varying levels of special
1956: 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>,
1957: <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 1958: <code><a href="obsolete.html#basefont">basefont</a></code>, <code><a href="obsolete.html#bgsound">bgsound</a></code>,
1.159 mike 1959: <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 1960: <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>,
1.86 mike 1961: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID--><code>datagrid</code>,
1.422 mike 1962: <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>,
1963: <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>,
1964: <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="text-level-semantics.html#the-figure-element">figure</a></code>,
1965: <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>,
1966: <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>,
1967: <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>,
1968: <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>,
1969: <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>,
1970: (commented out because this isn't an element that can end up on the
1971: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
1972: <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>,
1973: <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>,
1974: <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>,
1975: <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>,
1976: <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>,
1977: <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 1978: <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>,
1979: <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>,
1980: <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 1981: <code><a href="obsolete.html#wbr">wbr</a></code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 1982:
1983: <dt><dfn id="scoping">Scoping</dfn></dt>
1984: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
1985: an element in scope">scopes</a> for various parts of the
1.5 mike 1986: 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 1987: <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>,
1988: <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 1989: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
1990:
1991: <dt><dfn id="formatting">Formatting</dfn></dt>
1992: <dd><p>The following HTML elements are those that end up in the
1993: <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 1994: <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>,
1995: <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 1996: <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 1997: <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
1998: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 1999:
2000: <dt><dfn id="phrasing">Phrasing</dfn></dt>
2001: <dd><p>All other elements found while parsing an HTML
2002: document.</p></dd>
2003:
1.234 mike 2004: </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
2005: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
2006: match state:</p>
1.1 mike 2007:
2008: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
2009: node</a> (the bottommost node of the stack).</p></li>
2010:
2011: <li><p>If <var title="">node</var> is the target node, terminate in
2012: a match state.</p></li>
2013:
1.234 mike 2014: <li><p>Otherwise, if <var title="">node</var> is one of the element
2015: types in <var title="">list</var>, terminate in a failure
2016: state.</p></li>
1.1 mike 2017:
2018: <li><p>Otherwise, set <var title="">node</var> to the previous
2019: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
2020: 2. (This will never fail, since the loop will always terminate in
2021: the previous step if the top of the stack — an
1.159 mike 2022: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 2023:
1.234 mike 2024: </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
2025: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
2026: of the following element types:</p>
2027:
2028: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
2029: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
2030: <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.) -->
2031: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2032: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
2033: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
2034: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
2035: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
2036: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
2037: <li><code title="">foreignObject</code> in the SVG namespace</li>
2038: </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
2039: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2040: scope</a> consisting of the following element types:</p>
2041:
2042: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
2043: in scope</a></i> algorithm.</li>
2044: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
2045: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
2046: </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
2047: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2048: scope</a> consisting of the following element types:</p>
2049:
2050: <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.) -->
2051: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2052: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 2053: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
2054: or removed from, the <code>Document</code> tree. In particular, the
2055: stack is not changed in this situation. This can cause, amongst
2056: other strange effects, content to be appended to nodes that are no
2057: longer in the DOM.</p>
2058:
2059: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
2060: the stack is manipulated in a random-access fashion.</p>
2061:
2062:
1.724 mike 2063: <h5 id="the-list-of-active-formatting-elements"><span class="secno">7.2.3.3 </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 2064:
2065: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
2066: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
2067:
2068: <p>The list contains elements in the <a href="#formatting">formatting</a>
2069: category, and scope markers. The scope markers are inserted when
1.159 mike 2070: 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 2071: elements, marquees, table cells, and table captions, and are used to
1.5 mike 2072: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 2073: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 2074: tables.</p>
2075:
2076: <p class="note">The scope markers are unrelated to the concept of an
2077: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
2078: scope</a>.</p>
2079:
2080: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
2081: elements</a> is associated with the token for which it was
2082: created, so that further elements can be created for that token if
2083: necessary.</p>
2084:
2085: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
2086: active formatting elements</dfn>, the UA must perform the following
2087: steps:</p>
2088:
2089: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
2090: elements</a>, then there is nothing to reconstruct; stop this
2091: algorithm.</li>
2092:
2093: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2094: active formatting elements</a> is a marker, or if it is an
2095: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2096: there is nothing to reconstruct; stop this algorithm.</li>
2097:
2098: <li>Let <var title="">entry</var> be the last (most recently added)
2099: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2100: elements</a>.</li>
2101:
2102: <li>If there are no entries before <var title="">entry</var> in the
2103: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2104: 8.</li>
2105:
2106: <li>Let <var title="">entry</var> be the entry one earlier than
2107: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2108: elements</a>.</li>
2109:
2110: <li>If <var title="">entry</var> is neither a marker nor an element
2111: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2112: 4.</li>
2113:
2114: <li>Let <var title="">entry</var> be the element one later than
2115: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2116: elements</a>.</li>
2117:
2118: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2119: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2120:
2121: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2122: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2123: elements</a> so that it is the new <a href="#current-node">current
2124: node</a>.</li>
2125:
2126: <li>Replace the entry for <var title="">entry</var> in the list
2127: with an entry for <var title="">new element</var>.</li>
2128:
2129: <li>If the entry for <var title="">new element</var> in the
2130: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2131: entry in the list, return to step 7.</li>
2132:
2133: </ol><p>This has the effect of reopening all the formatting elements that
2134: were opened in the current body, cell, or caption (whichever is
2135: youngest) that haven't been explicitly closed.</p>
2136:
2137: <p class="note">The way this specification is written, the
2138: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2139: elements in chronological order with the least recently added
2140: element first and the most recently added element last (except for
2141: while steps 8 to 11 of the above algorithm are being executed, of
2142: course).</p>
2143:
2144: <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
2145: active formatting elements up to the last marker</dfn>, the UA must
2146: perform the following steps:</p>
2147:
2148: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2149: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2150:
2151: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2152: formatting elements</a>.</li>
2153:
2154: <li>If <var title="">entry</var> was a marker, then stop the
2155: algorithm at this point. The list has been cleared up to the last
2156: marker.</li>
2157:
2158: <li>Go to step 1.</li>
2159:
1.724 mike 2160: </ol><h5 id="the-element-pointers"><span class="secno">7.2.3.4 </span>The element pointers</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2161:
2162: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2163: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2164: pointer</dfn> are both null.</p>
2165:
1.159 mike 2166: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2167: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2168: element pointer</a> gets set to point to this node.</p>
2169:
2170: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2171: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2172: whose end tag has not yet been seen. It is used to make form
2173: controls associate with forms in the face of dramatically bad
2174: markup, for historical reasons.</p>
2175:
2176:
1.724 mike 2177: <h5 id="other-parsing-state-flags"><span class="secno">7.2.3.5 </span>Other parsing state flags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2178:
2179: <p>The <dfn id="scripting-flag">scripting flag</dfn> is set to "enabled" if <a href="browsers.html#concept-n-script" title="concept-n-script">scripting was enabled</a> for the
2180: <code>Document</code> with which the parser is associated when the
2181: parser was created, and "disabled" otherwise.</p>
2182:
2183: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2184: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2185: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2186: don't execute in that case.</p>
2187:
2188: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2189: created. It is set to "not ok" after certain tokens are seen.</p>
2190:
1.266 mike 2191: </div><div class="impl">
1.1 mike 2192:
1.724 mike 2193: <h4 id="tokenization"><span class="secno">7.2.4 </span><dfn>Tokenization</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2194:
2195: <p>Implementations must act as if they used the following state
2196: machine to tokenize HTML. The state machine must start in the
2197: <a href="#data-state">data state</a>. Most states consume a single character,
2198: which may have various side-effects, and either switches the state
2199: machine to a new state to <em>reconsume</em> the same character, or
2200: switches it to a new state (to consume the next character), or
2201: repeats the same state (to consume the next character). Some states
2202: have more complicated behavior and can consume several characters
1.541 mike 2203: before switching to another state. In some cases, the tokenizer
2204: state is also changed by the tree construction stage.</p>
1.1 mike 2205:
1.541 mike 2206: <p>The exact behavior of certain states depends on the
2207: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2208: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2209: buffer</var></dfn> to track progress.</p>
1.1 mike 2210:
2211: <p>The output of the tokenization step is a series of zero or more
2212: of the following tokens: DOCTYPE, start tag, end tag, comment,
2213: character, end-of-file. DOCTYPE tokens have a name, a public
2214: identifier, a system identifier, and a <i>force-quirks
2215: flag</i>. When a DOCTYPE token is created, its name, public
2216: identifier, and system identifier must be marked as missing (which
2217: is a distinct state from the empty string), and the <i>force-quirks
2218: flag</i> must be set to <i>off</i> (its other state is
2219: <i>on</i>). Start and end tag tokens have a tag name, a
2220: <i>self-closing flag</i>, and a list of attributes, each of which
2221: has a name and a value. When a start or end tag token is created,
2222: its <i>self-closing flag</i> must be unset (its other state is that
2223: it be set), and its attributes list must be empty. Comment and
2224: character tokens have data.</p>
2225:
2226: <p>When a token is emitted, it must immediately be handled by the
2227: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2228: can affect the state of the tokenization stage, and can insert
2229: additional characters into the stream. (For example, the
1.1 mike 2230: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2231: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2232: characters into the stream being tokenized.)</p>
2233:
2234: <p>When a start tag token is emitted with its <i>self-closing
2235: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2236: self-closing flag">acknowledged</dfn> when it is processed by the
2237: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2238:
2239: <p>When an end tag token is emitted with attributes, that is a
2240: <a href="#parse-error">parse error</a>.</p>
2241:
2242: <p>When an end tag token is emitted with its <i>self-closing
2243: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2244:
1.541 mike 2245: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2246: tag name matches the tag name of the last start tag to have been
2247: emitted from this tokenizer, if any. If no start tag has been
2248: emitted from this tokenizer, then no end tag token is
2249: appropriate.</p>
2250:
1.1 mike 2251: <p>Before each step of the tokenizer, the user agent must first
2252: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2253: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2254: tokenizer, yielding control back to the caller.</p>
1.1 mike 2255:
2256: <p>The tokenizer state machine consists of the states defined in the
2257: following subsections.</p>
2258:
1.541 mike 2259:
1.333 mike 2260: <!-- Order of the lists below is supposed to be non-error then
2261: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2262:
1.541 mike 2263:
1.724 mike 2264: <h5 id="data-state"><span class="secno">7.2.4.1 </span><dfn>Data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2265:
2266: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2267:
2268: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2269: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2270: state</a>.</dd>
1.1 mike 2271:
1.541 mike 2272: <dt>U+003C LESS-THAN SIGN (<)</dt>
2273: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2274:
2275: <dt>EOF</dt>
2276: <dd>Emit an end-of-file token.</dd>
2277:
2278: <dt>Anything else</dt>
2279: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2280: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2281:
1.724 mike 2282: </dl><h5 id="character-reference-in-data-state"><span class="secno">7.2.4.2 </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 2283:
2284: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2285: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2286:
2287: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2288: token.</p>
2289:
2290: <p>Otherwise, emit the character token that was returned.</p>
2291:
2292: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
2293:
2294:
1.724 mike 2295: <h5 id="rcdata-state"><span class="secno">7.2.4.3 </span><dfn>RCDATA state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2296:
1.541 mike 2297: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2298:
1.541 mike 2299: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.618 mike 2300: <dd>Switch to the <a href="#character-reference-in-rcdata-state">character reference in RCDATA
1.541 mike 2301: state</a>.</dd>
1.1 mike 2302:
2303: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2304: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2305:
2306: <dt>EOF</dt>
2307: <dd>Emit an end-of-file token.</dd>
1.1 mike 2308:
1.541 mike 2309: <dt>Anything else</dt>
2310: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2311: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2312:
1.724 mike 2313: </dl><h5 id="character-reference-in-rcdata-state"><span class="secno">7.2.4.4 </span><dfn>Character reference in RCDATA state</dfn></h5>
1.618 mike 2314:
2315: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2316: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2317:
2318: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2319: token.</p>
2320:
2321: <p>Otherwise, emit the character token that was returned.</p>
2322:
2323: <p>Finally, switch to the <a href="#rcdata-state">RCDATA state</a>.</p>
2324:
2325:
1.724 mike 2326: <h5 id="rawtext-state"><span class="secno">7.2.4.5 </span><dfn>RAWTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2327:
1.541 mike 2328: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2329:
1.541 mike 2330: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2331: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2332:
2333: <dt>EOF</dt>
2334: <dd>Emit an end-of-file token.</dd>
2335:
2336: <dt>Anything else</dt>
1.541 mike 2337: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2338: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2339:
1.724 mike 2340: </dl><h5 id="script-data-state"><span class="secno">7.2.4.6 </span><dfn>Script data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2341:
1.541 mike 2342: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2343:
1.541 mike 2344: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2345: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2346:
1.541 mike 2347: <dt>EOF</dt>
2348: <dd>Emit an end-of-file token.</dd>
1.1 mike 2349:
1.541 mike 2350: <dt>Anything else</dt>
2351: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2352: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2353:
1.724 mike 2354: </dl><h5 id="plaintext-state"><span class="secno">7.2.4.7 </span><dfn>PLAINTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2355:
1.541 mike 2356: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2357:
1.541 mike 2358: <dl class="switch"><dt>EOF</dt>
2359: <dd>Emit an end-of-file token.</dd>
1.1 mike 2360:
1.541 mike 2361: <dt>Anything else</dt>
2362: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2363: token. Stay in the <a href="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2364:
1.724 mike 2365: </dl><h5 id="tag-open-state"><span class="secno">7.2.4.8 </span><dfn>Tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2366:
1.541 mike 2367: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2368:
1.541 mike 2369: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2370: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2371:
1.541 mike 2372: <dt>U+002F SOLIDUS (/)</dt>
2373: <dd>Switch to the <a href="#close-tag-open-state">close tag open state</a>.</dd>
1.1 mike 2374:
1.541 mike 2375: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2376: <dd>Create a new start tag token, set its tag name to the
2377: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2378: character's code point), then switch to the <a href="#tag-name-state">tag name
2379: state</a>. (Don't emit the token yet; further details will
2380: be filled in before it is emitted.)</dd>
1.1 mike 2381:
1.541 mike 2382: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2383: <dd>Create a new start tag token, set its tag name to the
2384: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2385: name state</a>. (Don't emit the token yet; further details will
2386: be filled in before it is emitted.)</dd>
1.1 mike 2387:
1.541 mike 2388: <dt>U+003F QUESTION MARK (?)</dt>
2389: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2390: comment state</a>.</dd>
1.1 mike 2391:
1.541 mike 2392: <dt>Anything else</dt>
2393: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2394: character token and reconsume the <a href="#current-input-character">current input
2395: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2396:
1.724 mike 2397: </dl><h5 id="close-tag-open-state"><span class="secno">7.2.4.9 </span><dfn>Close tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2398:
1.541 mike 2399: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2400:
2401: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2402: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2403: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2404: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2405: state</a>. (Don't emit the token yet; further details will be
2406: filled in before it is emitted.)</dd>
2407:
2408: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2409: <dd>Create a new end tag token, set its tag name to the
2410: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2411: name state</a>. (Don't emit the token yet; further details will
2412: be filled in before it is emitted.)</dd>
1.1 mike 2413:
2414: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2415: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2416: state</a>.</dd>
2417:
2418: <dt>EOF</dt>
2419: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2420: character token and a U+002F SOLIDUS character token. Reconsume
2421: the EOF character in the <a href="#data-state">data state</a>.</dd>
2422:
2423: <dt>Anything else</dt>
2424: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2425: comment state</a>.</dd>
2426:
1.724 mike 2427: </dl><h5 id="tag-name-state"><span class="secno">7.2.4.10 </span><dfn>Tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2428:
2429: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2430:
2431: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2432: <dt>U+000A LINE FEED (LF)</dt>
2433: <dt>U+000C FORM FEED (FF)</dt>
2434: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2435: <dt>U+0020 SPACE</dt>
2436: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2437:
2438: <dt>U+002F SOLIDUS (/)</dt>
2439: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2440:
2441: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2442: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2443: state</a>.</dd>
2444:
2445: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2446: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2447: character</a> (add 0x0020 to the character's code point) to the
2448: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2449: state</a>.</dd>
2450:
2451: <dt>EOF</dt>
2452: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2453: <a href="#data-state">data state</a>.</dd>
2454:
2455: <dt>Anything else</dt>
2456: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2457: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2458:
1.724 mike 2459: </dl><h5 id="rcdata-less-than-sign-state"><span class="secno">7.2.4.11 </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 2460: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2461:
2462: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2463:
2464: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2465: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2466: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2467:
2468: <dt>Anything else</dt>
2469: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2470: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2471: state</a>.</dd>
2472:
1.724 mike 2473: </dl><h5 id="rcdata-end-tag-open-state"><span class="secno">7.2.4.12 </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 2474: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2475:
2476: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2477:
2478: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2479: <dd>Create a new end tag token, and set its tag name to the
2480: lowercase version of the <a href="#current-input-character">current input character</a> (add
2481: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2482: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2483: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2484: the token yet; further details will be filled in before it is
2485: emitted.)</dd>
2486:
2487: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2488: <dd>Create a new end tag token, and set its tag name to the
2489: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2490: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2491: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2492: the token yet; further details will be filled in before it is
2493: emitted.)</dd>
2494:
2495: <dt>Anything else</dt>
2496: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2497: character token, and reconsume the <a href="#current-input-character">current input
2498: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2499:
1.724 mike 2500: </dl><h5 id="rcdata-end-tag-name-state"><span class="secno">7.2.4.13 </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 2501: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2502:
2503: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2504:
2505: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2506: <dt>U+000A LINE FEED (LF)</dt>
2507: <dt>U+000C FORM FEED (FF)</dt>
2508: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2509: <dt>U+0020 SPACE</dt>
2510: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2511: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2512: state</a>. Otherwise, treat it as per the "anything else" entry
2513: below.</dd>
2514:
2515: <dt>U+002F SOLIDUS (/)</dt>
2516: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2517: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2518: state</a>. Otherwise, treat it as per the "anything else" entry
2519: below.</dd>
2520:
2521: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2522: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2523: token</a>, then emit the current tag token and switch to the
2524: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2525: else" entry below.</dd>
2526:
2527: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2528: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2529: character</a> (add 0x0020 to the character's code point) to the
2530: current tag token's tag name. Append the <a href="#current-input-character">current input
2531: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2532: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2533:
2534: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2535: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2536: tag token's tag name. Append the <a href="#current-input-character">current input
2537: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2538: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2539:
2540: <dt>Anything else</dt>
2541: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2542: character token, a character token for each of the characters in
2543: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2544: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2545: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2546:
1.724 mike 2547: </dl><h5 id="rawtext-less-than-sign-state"><span class="secno">7.2.4.14 </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 2548: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2549:
2550: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2551:
2552: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2553: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2554: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2555:
2556: <dt>Anything else</dt>
2557: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2558: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2559: state</a>.</dd>
2560:
1.724 mike 2561: </dl><h5 id="rawtext-end-tag-open-state"><span class="secno">7.2.4.15 </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 2562: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2563:
2564: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2565:
2566: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2567: <dd>Create a new end tag token, and set its tag name to the
2568: lowercase version of the <a href="#current-input-character">current input character</a> (add
2569: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2570: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2571: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2572: the token yet; further details will be filled in before it is
2573: emitted.)</dd>
2574:
2575: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2576: <dd>Create a new end tag token, and set its tag name to the
2577: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2578: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2579: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2580: the token yet; further details will be filled in before it is
2581: emitted.)</dd>
2582:
2583: <dt>Anything else</dt>
2584: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2585: character token, and reconsume the <a href="#current-input-character">current input
2586: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2587:
1.724 mike 2588: </dl><h5 id="rawtext-end-tag-name-state"><span class="secno">7.2.4.16 </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 2589: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2590:
2591: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2592:
2593: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2594: <dt>U+000A LINE FEED (LF)</dt>
2595: <dt>U+000C FORM FEED (FF)</dt>
2596: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2597: <dt>U+0020 SPACE</dt>
2598: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2599: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2600: state</a>. Otherwise, treat it as per the "anything else" entry
2601: below.</dd>
2602:
2603: <dt>U+002F SOLIDUS (/)</dt>
2604: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2605: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2606: state</a>. Otherwise, treat it as per the "anything else" entry
2607: below.</dd>
2608:
2609: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2610: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2611: token</a>, then emit the current tag token and switch to the
2612: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2613: else" entry below.</dd>
2614:
2615: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2616: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2617: character</a> (add 0x0020 to the character's code point) to the
2618: current tag token's tag name. Append the <a href="#current-input-character">current input
2619: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2620: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2621:
2622: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2623: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2624: tag token's tag name. Append the <a href="#current-input-character">current input
2625: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2626: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2627:
2628: <dt>Anything else</dt>
2629: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2630: character token, a character token for each of the characters in
2631: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2632: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2633: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2634:
1.724 mike 2635: </dl><h5 id="script-data-less-than-sign-state"><span class="secno">7.2.4.17 </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 2636:
2637: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2638:
2639: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2640: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2641: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2642:
2643: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2644: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2645: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2646: escape start state</a>.</dd>
2647:
2648: <dt>Anything else</dt>
2649: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2650: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2651: state</a>.</dd>
2652:
1.724 mike 2653: </dl><h5 id="script-data-end-tag-open-state"><span class="secno">7.2.4.18 </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 2654: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2655:
2656: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2657:
2658: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2659: <dd>Create a new end tag token, and set its tag name to the
2660: lowercase version of the <a href="#current-input-character">current input character</a> (add
2661: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2662: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2663: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2664: the token yet; further details will be filled in before it is
2665: emitted.)</dd>
2666:
2667: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2668: <dd>Create a new end tag token, and set its tag name to the
2669: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2670: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2671: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2672: the token yet; further details will be filled in before it is
2673: emitted.)</dd>
2674:
2675: <dt>Anything else</dt>
2676: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2677: character token, and reconsume the <a href="#current-input-character">current input
2678: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2679:
1.724 mike 2680: </dl><h5 id="script-data-end-tag-name-state"><span class="secno">7.2.4.19 </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 2681: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2682:
2683: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2684:
2685: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2686: <dt>U+000A LINE FEED (LF)</dt>
2687: <dt>U+000C FORM FEED (FF)</dt>
2688: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2689: <dt>U+0020 SPACE</dt>
2690: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2691: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2692: state</a>. Otherwise, treat it as per the "anything else" entry
2693: below.</dd>
2694:
2695: <dt>U+002F SOLIDUS (/)</dt>
2696: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2697: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2698: state</a>. Otherwise, treat it as per the "anything else" entry
2699: below.</dd>
2700:
2701: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2702: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2703: token</a>, then emit the current tag token and switch to the
2704: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2705: else" entry below.</dd>
2706:
2707: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2708: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2709: character</a> (add 0x0020 to the character's code point) to the
2710: current tag token's tag name. Append the <a href="#current-input-character">current input
2711: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2712: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2713:
2714: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2715: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2716: tag token's tag name. Append the <a href="#current-input-character">current input
2717: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2718: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2719:
2720: <dt>Anything else</dt>
2721: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2722: character token, a character token for each of the characters in
2723: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2724: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2725: in the <a href="#script-data-state">script data state</a>.</dd>
2726:
1.724 mike 2727: </dl><h5 id="script-data-escape-start-state"><span class="secno">7.2.4.20 </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 2728:
2729: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2730:
2731: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2732: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2733: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2734:
2735: <dt>Anything else</dt>
2736: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2737: <a href="#script-data-state">script data state</a>.</dd>
2738:
1.724 mike 2739: </dl><h5 id="script-data-escape-start-dash-state"><span class="secno">7.2.4.21 </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 2740:
2741: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2742:
2743: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2744: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2745: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2746:
2747: <dt>Anything else</dt>
2748: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2749: <a href="#script-data-state">script data state</a>.</dd>
2750:
1.724 mike 2751: </dl><h5 id="script-data-escaped-state"><span class="secno">7.2.4.22 </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 2752:
2753: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2754:
2755: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2756: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2757: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2758:
1.542 mike 2759: <dt>U+003C LESS-THAN SIGN (<)</dt>
2760: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2761: state</a>.</p></dd>
2762:
1.541 mike 2763: <dt>EOF</dt>
2764: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2765: <a href="#data-state">data state</a>.</dd>
2766:
2767: <dt>Anything else</dt>
1.542 mike 2768: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2769: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2770:
1.724 mike 2771: </dl><h5 id="script-data-escaped-dash-state"><span class="secno">7.2.4.23 </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 2772:
2773: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2774:
2775: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2776: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2777: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2778:
1.542 mike 2779: <dt>U+003C LESS-THAN SIGN (<)</dt>
2780: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2781: state</a>.</p></dd>
2782:
1.541 mike 2783: <dt>EOF</dt>
2784: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2785: <a href="#data-state">data state</a>.</dd>
2786:
2787: <dt>Anything else</dt>
1.542 mike 2788: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2789: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2790:
1.724 mike 2791: </dl><h5 id="script-data-escaped-dash-dash-state"><span class="secno">7.2.4.24 </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 2792:
2793: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2794:
2795: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2796: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2797: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2798:
1.542 mike 2799: <dt>U+003C LESS-THAN SIGN (<)</dt>
2800: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2801: state</a>.</p></dd>
2802:
1.541 mike 2803: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2804: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2805: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2806:
2807: <dt>EOF</dt>
2808: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2809: <a href="#data-state">data state</a>.</dd>
2810:
2811: <dt>Anything else</dt>
1.542 mike 2812: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2813: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2814:
1.724 mike 2815: </dl><h5 id="script-data-escaped-less-than-sign-state"><span class="secno">7.2.4.25 </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 2816:
2817: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2818:
2819: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2820: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2821: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2822:
2823: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2824: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2825: <a href="#current-input-character">current input character</a> as a character token. Set the
2826: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2827: lowercase version of the <a href="#current-input-character">current input character</a> (add
2828: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2829: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2830: state</a>.</dd>
2831:
2832: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2833: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2834: <a href="#current-input-character">current input character</a> as a character token. Set the
2835: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2836: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2837: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2838: state</a>.</dd>
2839:
2840: <dt>Anything else</dt>
2841: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2842: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2843: escaped state</a>.</dd>
2844:
1.724 mike 2845: </dl><h5 id="script-data-escaped-end-tag-open-state"><span class="secno">7.2.4.26 </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 2846:
2847: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2848:
2849: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2850: <dd>Create a new end tag token, and set its tag name to the
2851: lowercase version of the <a href="#current-input-character">current input character</a> (add
2852: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2853: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2854: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2855: state</a>. (Don't emit the token yet; further details will be
2856: filled in before it is emitted.)</dd>
2857:
2858: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2859: <dd>Create a new end tag token, and set its tag name to the
2860: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2861: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2862: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2863: state</a>. (Don't emit the token yet; further details will be
2864: filled in before it is emitted.)</dd>
2865:
2866: <dt>Anything else</dt>
2867: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2868: character token, and reconsume the <a href="#current-input-character">current input
2869: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2870:
1.724 mike 2871: </dl><h5 id="script-data-escaped-end-tag-name-state"><span class="secno">7.2.4.27 </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 2872:
2873: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2874:
2875: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2876: <dt>U+000A LINE FEED (LF)</dt>
2877: <dt>U+000C FORM FEED (FF)</dt>
2878: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2879: <dt>U+0020 SPACE</dt>
2880: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2881: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2882: state</a>. Otherwise, treat it as per the "anything else" entry
2883: below.</dd>
2884:
2885: <dt>U+002F SOLIDUS (/)</dt>
2886: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2887: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2888: state</a>. Otherwise, treat it as per the "anything else" entry
2889: below.</dd>
2890:
2891: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2892: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2893: token</a>, then emit the current tag token and switch to the
2894: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2895: else" entry below.</dd>
2896:
2897: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2898: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2899: character</a> (add 0x0020 to the character's code point) to the
2900: current tag token's tag name. Append the <a href="#current-input-character">current input
2901: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2902: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2903:
2904: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2905: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2906: tag token's tag name. Append the <a href="#current-input-character">current input
2907: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2908: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2909:
2910: <dt>Anything else</dt>
2911: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2912: character token, a character token for each of the characters in
2913: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2914: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2915: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2916:
1.724 mike 2917: </dl><h5 id="script-data-double-escape-start-state"><span class="secno">7.2.4.28 </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 2918:
2919: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2920:
2921: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2922: <dt>U+000A LINE FEED (LF)</dt>
2923: <dt>U+000C FORM FEED (FF)</dt>
2924: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2925: <dt>U+0020 SPACE</dt>
2926: <dt>U+002F SOLIDUS (/)</dt>
2927: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2928: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2929: 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
2930: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2931: data escaped state</a>.</dd>
2932:
2933: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2934: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2935: token. Append the lowercase version of the <a href="#current-input-character">current input
2936: character</a> (add 0x0020 to the character's code point) to the
2937: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2938: escape start state</a>.</dd>
2939:
2940: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2941: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2942: token. Append the <a href="#current-input-character">current input character</a> to the
2943: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2944: escape start state</a>.</dd>
2945:
2946: <dt>Anything else</dt>
2947: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2948: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2949:
1.724 mike 2950: </dl><h5 id="script-data-double-escaped-state"><span class="secno">7.2.4.29 </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 2951:
2952: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2953:
2954: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2955: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2956: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2957:
2958: <dt>U+003C LESS-THAN SIGN (<)</dt>
2959: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2960: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2961: state</a>.</p></dd>
2962:
2963: <dt>EOF</dt>
2964: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2965: <a href="#data-state">data state</a>.</dd>
2966:
2967: <dt>Anything else</dt>
2968: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2969: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
2970: state</a>.</dd>
2971:
1.724 mike 2972: </dl><h5 id="script-data-double-escaped-dash-state"><span class="secno">7.2.4.30 </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 2973:
2974: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2975:
2976: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2977: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2978: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2979:
2980: <dt>U+003C LESS-THAN SIGN (<)</dt>
2981: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2982: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2983: state</a>.</p></dd>
2984:
2985: <dt>EOF</dt>
2986: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2987: <a href="#data-state">data state</a>.</dd>
2988:
2989: <dt>Anything else</dt>
2990: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2991: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2992: state</a>.</dd>
2993:
1.724 mike 2994: </dl><h5 id="script-data-double-escaped-dash-dash-state"><span class="secno">7.2.4.31 </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 2995:
2996: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2997:
2998: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2999: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
3000: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
3001:
3002: <dt>U+003C LESS-THAN SIGN (<)</dt>
3003: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
3004: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
3005: state</a>.</p></dd>
3006:
3007: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3008: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
3009: <a href="#script-data-state">script data state</a>.</dd>
3010:
3011: <dt>EOF</dt>
3012: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3013: <a href="#data-state">data state</a>.</dd>
3014:
3015: <dt>Anything else</dt>
3016: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3017: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
3018: state</a>.</dd>
3019:
1.724 mike 3020: </dl><h5 id="script-data-double-escaped-less-than-sign-state"><span class="secno">7.2.4.32 </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 3021:
3022: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3023:
3024: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
3025: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
3026: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
3027: double escape end state</a>.</dd>
3028:
3029: <dt>Anything else</dt>
3030: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3031: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
3032:
1.724 mike 3033: </dl><h5 id="script-data-double-escape-end-state"><span class="secno">7.2.4.33 </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 3034:
3035: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3036:
3037: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3038: <dt>U+000A LINE FEED (LF)</dt>
3039: <dt>U+000C FORM FEED (FF)</dt>
3040: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3041: <dt>U+0020 SPACE</dt>
3042: <dt>U+002F SOLIDUS (/)</dt>
3043: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3044: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3045: 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
3046: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
3047: double escaped state</a>.</dd>
3048:
3049: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3050: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3051: token. Append the lowercase version of the <a href="#current-input-character">current input
3052: character</a> (add 0x0020 to the character's code point) to the
3053: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3054: escape end state</a>.</dd>
3055:
3056: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
3057: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3058: token. Append the <a href="#current-input-character">current input character</a> to the
3059: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3060: escape end state</a>.</dd>
3061:
3062: <dt>Anything else</dt>
3063: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3064: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 3065:
1.724 mike 3066: </dl><h5 id="before-attribute-name-state"><span class="secno">7.2.4.34 </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 3067:
3068: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3069:
3070: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3071: <dt>U+000A LINE FEED (LF)</dt>
3072: <dt>U+000C FORM FEED (FF)</dt>
3073: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3074: <dt>U+0020 SPACE</dt>
3075: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3076:
3077: <dt>U+002F SOLIDUS (/)</dt>
3078: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3079:
3080: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3081: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3082: state</a>.</dd>
3083:
3084: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3085: <dd>Start a new attribute in the current tag token. Set that
3086: attribute's name to the lowercase version of the <a href="#current-input-character">current input
3087: character</a> (add 0x0020 to the character's code point), and its
3088: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
3089: state</a>.</dd>
3090:
3091: <dt>U+0022 QUOTATION MARK (")</dt>
3092: <dt>U+0027 APOSTROPHE (')</dt>
3093: <dt>U+003C LESS-THAN SIGN (<)</dt>
3094: <dt>U+003D EQUALS SIGN (=)</dt>
3095: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3096: entry below.</dd>
3097:
3098: <dt>EOF</dt>
3099: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3100: <a href="#data-state">data state</a>.</dd>
3101:
3102: <dt>Anything else</dt>
3103: <dd>Start a new attribute in the current tag token. Set that
3104: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3105: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3106: state</a>.</dd>
3107:
1.724 mike 3108: </dl><h5 id="attribute-name-state"><span class="secno">7.2.4.35 </span><dfn>Attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3109:
3110: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3111:
3112: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3113: <dt>U+000A LINE FEED (LF)</dt>
3114: <dt>U+000C FORM FEED (FF)</dt>
3115: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3116: <dt>U+0020 SPACE</dt>
3117: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3118:
3119: <dt>U+002F SOLIDUS (/)</dt>
3120: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3121:
3122: <dt>U+003D EQUALS SIGN (=)</dt>
3123: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3124:
3125: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3126: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3127: state</a>.</dd>
3128:
3129: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3130: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3131: character</a> (add 0x0020 to the character's code point) to the
3132: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3133: state</a>.</dd>
3134:
3135: <dt>U+0022 QUOTATION MARK (")</dt>
3136: <dt>U+0027 APOSTROPHE (')</dt>
3137: <dt>U+003C LESS-THAN SIGN (<)</dt>
3138: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3139: entry below.</dd>
3140:
3141: <dt>EOF</dt>
3142: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3143: <a href="#data-state">data state</a>.</dd>
3144:
3145: <dt>Anything else</dt>
1.541 mike 3146: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3147: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3148: state</a>.</dd>
1.1 mike 3149:
3150: </dl><p>When the user agent leaves the attribute name state (and before
3151: emitting the tag token, if appropriate), the complete attribute's
3152: name must be compared to the other attributes on the same token;
3153: if there is already an attribute on the token with the exact same
3154: name, then this is a <a href="#parse-error">parse error</a> and the new
3155: attribute must be dropped, along with the value that gets
3156: associated with it (if any).</p>
3157:
3158:
1.724 mike 3159: <h5 id="after-attribute-name-state"><span class="secno">7.2.4.36 </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 3160:
3161: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3162:
3163: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3164: <dt>U+000A LINE FEED (LF)</dt>
3165: <dt>U+000C FORM FEED (FF)</dt>
3166: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3167: <dt>U+0020 SPACE</dt>
3168: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3169:
3170: <dt>U+002F SOLIDUS (/)</dt>
3171: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3172:
3173: <dt>U+003D EQUALS SIGN (=)</dt>
3174: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3175:
3176: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3177: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3178: state</a>.</dd>
3179:
3180: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3181: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3182: attribute's name to the lowercase version of the <a href="#current-input-character">current
3183: input character</a> (add 0x0020 to the character's code point),
3184: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3185: name state</a>.</dd>
1.1 mike 3186:
3187: <dt>U+0022 QUOTATION MARK (")</dt>
3188: <dt>U+0027 APOSTROPHE (')</dt>
3189: <dt>U+003C LESS-THAN SIGN (<)</dt>
3190: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3191: entry below.</dd>
3192:
3193: <dt>EOF</dt>
3194: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3195: <a href="#data-state">data state</a>.</dd>
3196:
3197: <dt>Anything else</dt>
3198: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3199: attribute's name to the <a href="#current-input-character">current input character</a>, and
3200: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3201: state</a>.</dd>
3202:
1.724 mike 3203: </dl><h5 id="before-attribute-value-state"><span class="secno">7.2.4.37 </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 3204:
3205: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3206:
3207: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3208: <dt>U+000A LINE FEED (LF)</dt>
3209: <dt>U+000C FORM FEED (FF)</dt>
3210: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3211: <dt>U+0020 SPACE</dt>
3212: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3213:
3214: <dt>U+0022 QUOTATION MARK (")</dt>
3215: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3216:
3217: <dt>U+0026 AMPERSAND (&)</dt>
3218: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3219: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3220:
3221: <dt>U+0027 APOSTROPHE (')</dt>
3222: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3223:
3224: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3225: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3226: the <a href="#data-state">data state</a>.</dd>
3227:
3228: <dt>U+003C LESS-THAN SIGN (<)</dt>
3229: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3230: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3231: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3232: entry below.</dd>
3233:
3234: <dt>EOF</dt>
3235: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3236: <a href="#data-state">data state</a>.</dd>
3237:
3238: <dt>Anything else</dt>
3239: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3240: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3241: state</a>.</dd>
3242:
1.724 mike 3243: </dl><h5 id="attribute-value-double-quoted-state"><span class="secno">7.2.4.38 </span><dfn>Attribute value (double-quoted) state</dfn></h5>
1.1 mike 3244:
3245: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3246:
3247: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3248: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3249: state</a>.</dd>
3250:
3251: <dt>U+0026 AMPERSAND (&)</dt>
3252: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3253: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3254: being U+0022 QUOTATION MARK (").</dd>
3255:
3256: <dt>EOF</dt>
3257: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3258: <a href="#data-state">data state</a>.</dd>
3259:
3260: <dt>Anything else</dt>
1.541 mike 3261: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3262: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3263: (double-quoted) state</a>.</dd>
1.1 mike 3264:
1.724 mike 3265: </dl><h5 id="attribute-value-single-quoted-state"><span class="secno">7.2.4.39 </span><dfn>Attribute value (single-quoted) state</dfn></h5>
1.1 mike 3266:
3267: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3268:
3269: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3270: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3271: state</a>.</dd>
3272:
3273: <dt>U+0026 AMPERSAND (&)</dt>
3274: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3275: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3276: being U+0027 APOSTROPHE (').</dd>
3277:
3278: <dt>EOF</dt>
3279: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3280: <a href="#data-state">data state</a>.</dd>
3281:
3282: <dt>Anything else</dt>
1.541 mike 3283: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3284: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3285: (single-quoted) state</a>.</dd>
1.1 mike 3286:
1.724 mike 3287: </dl><h5 id="attribute-value-unquoted-state"><span class="secno">7.2.4.40 </span><dfn>Attribute value (unquoted) state</dfn></h5>
1.1 mike 3288:
3289: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3290:
3291: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3292: <dt>U+000A LINE FEED (LF)</dt>
3293: <dt>U+000C FORM FEED (FF)</dt>
3294: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3295: <dt>U+0020 SPACE</dt>
3296: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3297:
3298: <dt>U+0026 AMPERSAND (&)</dt>
3299: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3300: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3301: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3302:
3303: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3304: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3305: state</a>.</dd>
3306:
3307: <dt>U+0022 QUOTATION MARK (")</dt>
3308: <dt>U+0027 APOSTROPHE (')</dt>
3309: <dt>U+003C LESS-THAN SIGN (<)</dt>
3310: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3311: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3312: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3313: entry below.</dd>
3314:
3315: <dt>EOF</dt>
3316: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3317: <a href="#data-state">data state</a>.</dd>
3318:
3319: <dt>Anything else</dt>
1.541 mike 3320: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3321: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3322: state</a>.</dd>
3323:
1.724 mike 3324: </dl><h5 id="character-reference-in-attribute-value-state"><span class="secno">7.2.4.41 </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 3325:
3326: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3327:
3328: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3329: the current attribute's value.</p>
3330:
3331: <p>Otherwise, append the returned character token to the current
3332: attribute's value.</p>
3333:
3334: <p>Finally, switch back to the attribute value state that you were
3335: in when were switched into this state.</p>
3336:
3337:
1.724 mike 3338: <h5 id="after-attribute-value-quoted-state"><span class="secno">7.2.4.42 </span><dfn>After attribute value (quoted) state</dfn></h5>
1.1 mike 3339:
3340: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3341:
3342: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3343: <dt>U+000A LINE FEED (LF)</dt>
3344: <dt>U+000C FORM FEED (FF)</dt>
3345: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3346: <dt>U+0020 SPACE</dt>
3347: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3348:
3349: <dt>U+002F SOLIDUS (/)</dt>
3350: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3351:
3352: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3353: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3354: state</a>.</dd>
3355:
3356: <dt>EOF</dt>
3357: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3358: <a href="#data-state">data state</a>.</dd>
3359:
3360: <dt>Anything else</dt>
3361: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3362: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3363:
1.724 mike 3364: </dl><h5 id="self-closing-start-tag-state"><span class="secno">7.2.4.43 </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 3365:
3366: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3367:
3368: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3369: <dd>Set the <i>self-closing flag</i> of the current tag
3370: token. Emit the current tag token. Switch to the <a href="#data-state">data
3371: state</a>.</dd>
3372:
3373: <dt>EOF</dt>
3374: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3375: <a href="#data-state">data state</a>.</dd>
3376:
3377: <dt>Anything else</dt>
3378: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3379: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3380:
1.724 mike 3381: </dl><h5 id="bogus-comment-state"><span class="secno">7.2.4.44 </span><dfn>Bogus comment state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3382:
3383: <p>Consume every character up to and including the first U+003E
3384: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3385: whichever comes first. Emit a comment token whose data is the
3386: concatenation of all the characters starting from and including
3387: the character that caused the state machine to switch into the
3388: bogus comment state, up to and including the character immediately
3389: before the last consumed character (i.e. up to the character just
3390: before the U+003E or EOF character). (If the comment was started
3391: by the end of the file (EOF), the token is empty.)</p>
3392:
3393: <p>Switch to the <a href="#data-state">data state</a>.</p>
3394:
3395: <p>If the end of the file was reached, reconsume the EOF
3396: character.</p>
3397:
3398:
1.724 mike 3399: <h5 id="markup-declaration-open-state"><span class="secno">7.2.4.45 </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 3400:
1.588 mike 3401: <p>If the next two characters are both U+002D HYPHEN-MINUS
3402: characters (-), consume those two characters, create a comment token
1.1 mike 3403: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3404: start state</a>.</p>
3405:
3406: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3407: case-insensitive</a> match for the word "DOCTYPE", then consume
3408: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3409:
3410: <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
3411: content</a>" and the <a href="#current-node">current node</a> is not an element
1.724 mike 3412: in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a> and the next seven characters are
1.585 mike 3413: an <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "[CDATA[" (the
3414: five uppercase letters "CDATA" with a U+005B LEFT SQUARE BRACKET
3415: character before and after), then consume those characters and
3416: switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3417:
3418: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3419: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3420: consumed, if any, is the first character that will be in the
3421: comment.</p>
3422:
3423:
1.724 mike 3424: <h5 id="comment-start-state"><span class="secno">7.2.4.46 </span><dfn>Comment start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3425:
3426: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3427:
3428: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3429: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3430:
3431: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3432: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3433: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3434: -->
3435:
3436: <dt>EOF</dt>
3437: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3438: the EOF character in the <a href="#data-state">data state</a>.</dd>
3439:
3440: <dt>Anything else</dt>
1.541 mike 3441: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3442: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3443:
1.724 mike 3444: </dl><h5 id="comment-start-dash-state"><span class="secno">7.2.4.47 </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 3445:
3446: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3447:
3448: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3449: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3450:
3451: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3452: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3453: the <a href="#data-state">data state</a>.</dd>
3454:
3455: <dt>EOF</dt>
3456: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3457: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3458: in comment end state -->
3459:
3460: <dt>Anything else</dt>
1.541 mike 3461: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3462: <a href="#current-input-character">current input character</a> to the comment token's
3463: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3464:
1.724 mike 3465: </dl><h5 id="comment-state"><span class="secno">7.2.4.48 </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 3466:
3467: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3468:
3469: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3470: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3471:
3472: <dt>EOF</dt>
3473: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3474: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3475: in comment end state -->
3476:
3477: <dt>Anything else</dt>
1.541 mike 3478: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3479: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3480:
1.724 mike 3481: </dl><h5 id="comment-end-dash-state"><span class="secno">7.2.4.49 </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 3482:
3483: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3484:
3485: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3486: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3487:
3488: <dt>EOF</dt>
3489: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3490: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3491: in comment end state -->
3492:
3493: <dt>Anything else</dt>
1.541 mike 3494: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3495: <a href="#current-input-character">current input character</a> to the comment token's
3496: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3497:
1.724 mike 3498: </dl><h5 id="comment-end-state"><span class="secno">7.2.4.50 </span><dfn>Comment end state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3499:
3500: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3501:
3502: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3503: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3504: state</a>.</dd>
3505:
3506: <dt>U+0009 CHARACTER TABULATION</dt>
3507: <dt>U+000A LINE FEED (LF)</dt>
3508: <dt>U+000C FORM FEED (FF)</dt>
3509: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3510: <dt>U+0020 SPACE</dt>
1.588 mike 3511: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3512: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3513: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3514: state</a>.</dd>
1.1 mike 3515:
3516: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3517: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3518: state</a>.</dd>
3519:
1.333 mike 3520: <dt>U+002D HYPHEN-MINUS (-)</dt>
3521: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3522: character (-) to the comment token's data. Stay in the
1.333 mike 3523: <a href="#comment-end-state">comment end state</a>.</dd>
3524:
1.1 mike 3525: <dt>EOF</dt>
3526: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3527: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
1.724 mike 3528: security reasons: otherwise, hostile user could put a <script type="text/javascript"> in
1.1 mike 3529: a comment e.g. in a blog comment and then DOS the server so that
1.724 mike 3530: the end tag isn't read, and then the commented <script type="text/javascript"> tag would
1.1 mike 3531: be treated as live code -->
3532:
3533: <dt>Anything else</dt>
1.588 mike 3534: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3535: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3536: comment token's data. Switch to the <a href="#comment-state">comment
3537: state</a>.</dd>
1.1 mike 3538:
1.724 mike 3539: </dl><h5 id="comment-end-bang-state"><span class="secno">7.2.4.51 </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 3540:
3541: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3542:
1.333 mike 3543: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.588 mike 3544: <dd>Append two U+002D HYPHEN-MINUS characters (-) and a U+0021
1.464 mike 3545: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3546: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3547:
1.333 mike 3548: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3549: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3550: state</a>.</dd>
3551:
1.1 mike 3552: <dt>EOF</dt>
3553: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3554: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3555: comment in comment end state -->
3556:
3557: <dt>Anything else</dt>
1.588 mike 3558: <dd>Append two U+002D HYPHEN-MINUS characters (-), a U+0021
1.541 mike 3559: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3560: character</a> to the comment token's data. Switch to the
3561: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3562:
1.724 mike 3563: </dl><h5 id="comment-end-space-state"><span class="secno">7.2.4.52 </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 3564:
3565: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3566:
1.333 mike 3567: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3568: <dt>U+000A LINE FEED (LF)</dt>
3569: <dt>U+000C FORM FEED (FF)</dt>
3570: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3571: <dt>U+0020 SPACE</dt>
1.541 mike 3572: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3573: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3574:
1.333 mike 3575: <dt>U+002D HYPHEN-MINUS (-)</dt>
3576: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3577:
3578: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3579: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3580: state</a>.</dd>
3581:
1.1 mike 3582: <dt>EOF</dt>
3583: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3584: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3585: comment in comment end state -->
3586:
3587: <dt>Anything else</dt>
1.541 mike 3588: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3589: to the <a href="#comment-state">comment state</a>.</dd>
3590:
1.724 mike 3591: </dl><h5 id="doctype-state"><span class="secno">7.2.4.53 </span><dfn>DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3592:
3593: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3594:
3595: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3596: <dt>U+000A LINE FEED (LF)</dt>
3597: <dt>U+000C FORM FEED (FF)</dt>
3598: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3599: <dt>U+0020 SPACE</dt>
3600: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3601:
3602: <dt>EOF</dt>
3603: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3604: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3605: the EOF character in the <a href="#data-state">data state</a>.</dd>
3606:
3607: <dt>Anything else</dt>
1.608 mike 3608: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
3609: <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
1.1 mike 3610:
1.724 mike 3611: </dl><h5 id="before-doctype-name-state"><span class="secno">7.2.4.54 </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 3612:
3613: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3614:
3615: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3616: <dt>U+000A LINE FEED (LF)</dt>
3617: <dt>U+000C FORM FEED (FF)</dt>
3618: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3619: <dt>U+0020 SPACE</dt>
3620: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3621:
3622: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3623: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3624: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3625: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3626: state</a>.</dd>
3627:
1.333 mike 3628: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3629: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3630: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3631: the <a href="#data-state">data state</a>.</dd>
3632:
1.1 mike 3633: <dt>EOF</dt>
3634: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3635: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3636: the EOF character in the <a href="#data-state">data state</a>.</dd>
3637:
3638: <dt>Anything else</dt>
3639: <dd>Create a new DOCTYPE token. Set the token's name to the
3640: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3641: state</a>.</dd>
3642:
1.724 mike 3643: </dl><h5 id="doctype-name-state"><span class="secno">7.2.4.55 </span><dfn>DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3644:
3645: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3646:
3647: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3648: <dt>U+000A LINE FEED (LF)</dt>
3649: <dt>U+000C FORM FEED (FF)</dt>
3650: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3651: <dt>U+0020 SPACE</dt>
3652: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3653:
3654: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3655: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3656: state</a>.</dd>
3657:
3658: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3659: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3660: character</a> (add 0x0020 to the character's code point) to the
3661: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3662: state</a>.</dd>
1.1 mike 3663:
3664: <dt>EOF</dt>
3665: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3666: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3667: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3668:
3669: <dt>Anything else</dt>
1.541 mike 3670: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3671: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3672: state</a>.</dd>
1.1 mike 3673:
1.724 mike 3674: </dl><h5 id="after-doctype-name-state"><span class="secno">7.2.4.56 </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 3675:
3676: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3677:
3678: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3679: <dt>U+000A LINE FEED (LF)</dt>
3680: <dt>U+000C FORM FEED (FF)</dt>
3681: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3682: <dt>U+0020 SPACE</dt>
3683: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3684:
3685: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3686: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3687: state</a>.</dd>
3688:
3689: <dt>EOF</dt>
3690: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3691: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3692: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3693:
3694: <dt>Anything else</dt>
3695: <dd>
3696:
3697: <p>If the six characters starting from the <a href="#current-input-character">current input
3698: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3699: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3700: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3701:
3702: <p>Otherwise, if the six characters starting from the
3703: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3704: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3705: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3706: keyword state</a>.</p>
1.1 mike 3707:
3708: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3709: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3710: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3711:
3712: </dd>
3713:
1.724 mike 3714: </dl><h5 id="after-doctype-public-keyword-state"><span class="secno">7.2.4.57 </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 3715:
3716: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3717:
3718: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3719: <dt>U+000A LINE FEED (LF)</dt>
3720: <dt>U+000C FORM FEED (FF)</dt>
3721: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3722: <dt>U+0020 SPACE</dt>
3723: <dd>Switch to the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3724: state</a>.</dd>
3725:
1.620 mike 3726: <dt>U+0022 QUOTATION MARK (")</dt>
3727: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3728: identifier to the empty string (not missing), then switch to the
3729: <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier (double-quoted) state</a>.</dd>
3730:
3731: <dt>U+0027 APOSTROPHE (')</dt>
3732: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3733: identifier to the empty string (not missing), then switch to the
3734: <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier (single-quoted) state</a>.</dd>
3735:
3736: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3737: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3738: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3739: token. Switch to the <a href="#data-state">data state</a>.</dd>
3740:
1.444 mike 3741: <dt>EOF</dt>
3742: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3743: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3744: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3745:
3746: <dt>Anything else</dt>
1.620 mike 3747: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3748: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3749: DOCTYPE state</a>.</dd>
1.444 mike 3750:
1.724 mike 3751: </dl><h5 id="before-doctype-public-identifier-state"><span class="secno">7.2.4.58 </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 3752:
3753: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3754:
3755: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3756: <dt>U+000A LINE FEED (LF)</dt>
3757: <dt>U+000C FORM FEED (FF)</dt>
3758: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3759: <dt>U+0020 SPACE</dt>
3760: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3761:
3762: <dt>U+0022 QUOTATION MARK (")</dt>
3763: <dd>Set the DOCTYPE token's public identifier to the empty string
3764: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3765: (double-quoted) state</a>.</dd>
3766:
3767: <dt>U+0027 APOSTROPHE (')</dt>
3768: <dd>Set the DOCTYPE token's public identifier to the empty string
3769: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3770: (single-quoted) state</a>.</dd>
3771:
3772: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3773: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3774: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3775: token. Switch to the <a href="#data-state">data state</a>.</dd>
3776:
3777: <dt>EOF</dt>
3778: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3779: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3780: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3781:
3782: <dt>Anything else</dt>
3783: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3784: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3785: DOCTYPE state</a>.</dd>
3786:
1.724 mike 3787: </dl><h5 id="doctype-public-identifier-double-quoted-state"><span class="secno">7.2.4.59 </span><dfn>DOCTYPE public identifier (double-quoted) state</dfn></h5>
1.1 mike 3788:
3789: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3790:
3791: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3792: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3793:
3794: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3795: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3796: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3797: token. Switch to the <a href="#data-state">data state</a>.</dd>
3798:
3799: <dt>EOF</dt>
3800: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3801: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3802: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3803:
3804: <dt>Anything else</dt>
3805: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3806: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3807: identifier (double-quoted) state</a>.</dd>
3808:
1.724 mike 3809: </dl><h5 id="doctype-public-identifier-single-quoted-state"><span class="secno">7.2.4.60 </span><dfn>DOCTYPE public identifier (single-quoted) state</dfn></h5>
1.1 mike 3810:
3811: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3812:
3813: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3814: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3815:
3816: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3817: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3818: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3819: token. Switch to the <a href="#data-state">data state</a>.</dd>
3820:
3821: <dt>EOF</dt>
3822: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3823: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3824: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3825:
3826: <dt>Anything else</dt>
3827: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3828: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3829: identifier (single-quoted) state</a>.</dd>
3830:
1.724 mike 3831: </dl><h5 id="after-doctype-public-identifier-state"><span class="secno">7.2.4.61 </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 3832:
3833: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3834:
3835: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3836: <dt>U+000A LINE FEED (LF)</dt>
3837: <dt>U+000C FORM FEED (FF)</dt>
3838: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3839: <dt>U+0020 SPACE</dt>
1.541 mike 3840: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3841: identifiers state</a>.</dd>
1.444 mike 3842:
3843: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3844: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3845: state</a>.</dd>
3846:
3847: <dt>U+0022 QUOTATION MARK (")</dt>
3848: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3849: identifier to the empty string (not missing), then switch to the
3850: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3851:
3852: <dt>U+0027 APOSTROPHE (')</dt>
3853: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3854: identifier to the empty string (not missing), then switch to the
3855: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3856:
3857: <dt>EOF</dt>
3858: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3859: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3860: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3861:
3862: <dt>Anything else</dt>
3863: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3864: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3865: DOCTYPE state</a>.</dd>
3866:
1.724 mike 3867: </dl><h5 id="between-doctype-public-and-system-identifiers-state"><span class="secno">7.2.4.62 </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 3868:
3869: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3870:
3871: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3872: <dt>U+000A LINE FEED (LF)</dt>
3873: <dt>U+000C FORM FEED (FF)</dt>
3874: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3875: <dt>U+0020 SPACE</dt>
1.541 mike 3876: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3877: state</a>.</dd>
1.444 mike 3878:
3879: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3880: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3881: state</a>.</dd>
1.1 mike 3882:
3883: <dt>U+0022 QUOTATION MARK (")</dt>
3884: <dd>Set the DOCTYPE token's system identifier to the empty string
3885: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3886: (double-quoted) state</a>.</dd>
3887:
3888: <dt>U+0027 APOSTROPHE (')</dt>
3889: <dd>Set the DOCTYPE token's system identifier to the empty string
3890: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3891: (single-quoted) state</a>.</dd>
3892:
3893: <dt>EOF</dt>
3894: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3895: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3896: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3897:
3898: <dt>Anything else</dt>
3899: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3900: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3901: DOCTYPE state</a>.</dd>
3902:
1.724 mike 3903: </dl><h5 id="after-doctype-system-keyword-state"><span class="secno">7.2.4.63 </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 3904:
3905: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3906:
3907: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3908: <dt>U+000A LINE FEED (LF)</dt>
3909: <dt>U+000C FORM FEED (FF)</dt>
3910: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3911: <dt>U+0020 SPACE</dt>
3912: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3913: state</a>.</dd>
3914:
1.620 mike 3915: <dt>U+0022 QUOTATION MARK (")</dt>
3916: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3917: identifier to the empty string (not missing), then switch to the
3918: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3919:
3920: <dt>U+0027 APOSTROPHE (')</dt>
3921: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3922: identifier to the empty string (not missing), then switch to the
3923: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3924:
3925: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3926: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3927: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3928: token. Switch to the <a href="#data-state">data state</a>.</dd>
3929:
1.444 mike 3930: <dt>EOF</dt>
3931: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3932: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3933: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3934:
3935: <dt>Anything else</dt>
1.620 mike 3936: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3937: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3938: DOCTYPE state</a>.</dd>
1.444 mike 3939:
1.724 mike 3940: </dl><h5 id="before-doctype-system-identifier-state"><span class="secno">7.2.4.64 </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 3941:
3942: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3943:
3944: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3945: <dt>U+000A LINE FEED (LF)</dt>
3946: <dt>U+000C FORM FEED (FF)</dt>
3947: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3948: <dt>U+0020 SPACE</dt>
3949: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3950:
3951: <dt>U+0022 QUOTATION MARK (")</dt>
3952: <dd>Set the DOCTYPE token's system identifier to the empty string
3953: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3954: (double-quoted) state</a>.</dd>
3955:
3956: <dt>U+0027 APOSTROPHE (')</dt>
3957: <dd>Set the DOCTYPE token's system identifier to the empty string
3958: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3959: (single-quoted) state</a>.</dd>
3960:
3961: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3962: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3963: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3964: token. Switch to the <a href="#data-state">data state</a>.</dd>
3965:
3966: <dt>EOF</dt>
3967: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3968: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3969: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3970:
3971: <dt>Anything else</dt>
3972: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3973: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3974: DOCTYPE state</a>.</dd>
3975:
1.724 mike 3976: </dl><h5 id="doctype-system-identifier-double-quoted-state"><span class="secno">7.2.4.65 </span><dfn>DOCTYPE system identifier (double-quoted) state</dfn></h5>
1.1 mike 3977:
3978: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3979:
3980: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 3981: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3982: state</a>.</dd>
1.1 mike 3983:
3984: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3985: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3986: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3987: token. Switch to the <a href="#data-state">data state</a>.</dd>
3988:
3989: <dt>EOF</dt>
3990: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3991: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3992: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3993:
3994: <dt>Anything else</dt>
1.541 mike 3995: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3996: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 3997: identifier (double-quoted) state</a>.</dd>
3998:
1.724 mike 3999: </dl><h5 id="doctype-system-identifier-single-quoted-state"><span class="secno">7.2.4.66 </span><dfn>DOCTYPE system identifier (single-quoted) state</dfn></h5>
1.1 mike 4000:
4001: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4002:
4003: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 4004: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4005: state</a>.</dd>
1.1 mike 4006:
4007: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4008: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4009: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
4010: token. Switch to the <a href="#data-state">data state</a>.</dd>
4011:
4012: <dt>EOF</dt>
4013: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4014: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4015: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4016:
4017: <dt>Anything else</dt>
1.541 mike 4018: <dd>Append the <a href="#current-input-character">current input character</a> to the current
4019: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 4020: identifier (single-quoted) state</a>.</dd>
4021:
1.724 mike 4022: </dl><h5 id="after-doctype-system-identifier-state"><span class="secno">7.2.4.67 </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 4023:
4024: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4025:
4026: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4027: <dt>U+000A LINE FEED (LF)</dt>
4028: <dt>U+000C FORM FEED (FF)</dt>
4029: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4030: <dt>U+0020 SPACE</dt>
1.541 mike 4031: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4032: state</a>.</dd>
1.1 mike 4033:
4034: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4035: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
4036: state</a>.</dd>
4037:
4038: <dt>EOF</dt>
4039: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4040: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4041: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4042:
4043: <dt>Anything else</dt>
4044: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
4045: state</a>. (This does <em>not</em> set the DOCTYPE token's
4046: <i>force-quirks flag</i> to <i>on</i>.)</dd>
4047:
1.724 mike 4048: </dl><h5 id="bogus-doctype-state"><span class="secno">7.2.4.68 </span><dfn>Bogus DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4049:
4050: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4051:
4052: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
4053: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
4054: state</a>.</dd>
4055:
4056: <dt>EOF</dt>
4057: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
4058: <a href="#data-state">data state</a>.</dd>
4059:
4060: <dt>Anything else</dt>
4061: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
4062:
1.724 mike 4063: </dl><h5 id="cdata-section-state"><span class="secno">7.2.4.69 </span><dfn>CDATA section state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4064:
4065: <p>Consume every character up to the next occurrence of the three
4066: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
4067: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
4068: end of the file (EOF), whichever comes first. Emit a series of
4069: character tokens consisting of all the characters consumed except
4070: the matching three character sequence at the end (if one was found
4071: before the end of the file).</p>
4072:
4073: <p>Switch to the <a href="#data-state">data state</a>.</p>
4074:
4075: <p>If the end of the file was reached, reconsume the EOF
4076: character.</p>
4077:
4078:
4079:
1.724 mike 4080: <h5 id="tokenizing-character-references"><span class="secno">7.2.4.70 </span>Tokenizing character references</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4081:
4082: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
4083: reference</dfn>. This definition is used when parsing character
1.299 mike 4084: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 4085: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
4086: state">in attributes</a>.</p>
4087:
4088: <p>The behavior depends on the identity of the next character (the
4089: one immediately after the U+0026 AMPERSAND character):</p>
4090:
4091: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4092: <dt>U+000A LINE FEED (LF)</dt>
4093: <dt>U+000C FORM FEED (FF)</dt>
4094: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4095: <dt>U+0020 SPACE</dt>
4096: <dt>U+003C LESS-THAN SIGN</dt>
4097: <dt>U+0026 AMPERSAND</dt>
4098: <dt>EOF</dt>
4099: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
4100:
4101: <dd>Not a character reference. No characters are consumed, and
4102: nothing is returned. (This is not an error, either.)</dd>
4103:
4104:
4105: <dt>U+0023 NUMBER SIGN (#)</dt>
4106:
4107: <dd>
4108:
4109: <p>Consume the U+0023 NUMBER SIGN.</p>
4110:
4111: <p>The behavior further depends on the character after the U+0023
4112: NUMBER SIGN:</p>
4113:
4114: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
4115: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
4116:
4117: <dd>
4118:
4119: <p>Consume the X.</p>
4120:
4121: <p>Follow the steps below, but using the range of characters
1.464 mike 4122: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
4123: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
4124: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
4125: words, 0-9, A-F, a-f).</p>
1.1 mike 4126:
4127: <p>When it comes to interpreting the number, interpret it as a
4128: hexadecimal number.</p>
4129:
4130: </dd>
4131:
4132:
4133: <dt>Anything else</dt>
4134:
4135: <dd>
4136:
4137: <p>Follow the steps below, but using the range of characters
1.464 mike 4138: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4139:
4140: <p>When it comes to interpreting the number, interpret it as a
4141: decimal number.</p>
4142:
4143: </dd>
4144:
4145: </dl><p>Consume as many characters as match the range of characters
4146: given above.</p>
4147:
4148: <p>If no characters match the range, then don't consume any
4149: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4150: appropriate, the X character). This is a <a href="#parse-error">parse
4151: error</a>; nothing is returned.</p>
4152:
4153: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4154: that too. If it isn't, there is a <a href="#parse-error">parse
4155: error</a>.</p>
4156:
4157: <p>If one or more characters match the range, then take them all
4158: and interpret the string of characters as a number (either
4159: hexadecimal or decimal as appropriate).</p>
4160:
4161: <p>If that number is one of the numbers in the first column of the
4162: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4163: row with that number in the first column, and return a character
4164: token for the Unicode character given in the second column of that
4165: row.</p>
4166:
4167: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4168: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
4169: </td></tr><tr><td>0x0D </td><td>U+000A </td><td>LINE FEED (LF)
1.464 mike 4170: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4171: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4172: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4173: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4174: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4175: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4176: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4177: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4178: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4179: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4180: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4181: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4182: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4183: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4184: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4185: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4186: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4187: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4188: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4189: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4190: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4191: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4192: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4193: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4194: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4195: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4196: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4197: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4198: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4199: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4200: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4201: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4202: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4203: surrogates not allowed; see the comment in the "preprocessing the
4204: input stream" section for details --> or is greater than 0x10FFFF,
4205: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4206: REPLACEMENT CHARACTER.</p>
1.18 mike 4207:
4208: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4209: whose code point is that number.
4210:
4211: <!-- this is the same as the equivalent list in the input stream
4212: section -->
4213: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4214: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4215: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4216: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4217: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4218: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4219: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4220: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4221: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4222: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4223: error</a>.</p>
1.1 mike 4224:
4225: </dd>
4226:
4227:
4228: <dt>Anything else</dt>
4229:
4230: <dd>
4231:
4232: <p>Consume the maximum number of characters possible, with the
4233: consumed characters matching one of the identifiers in the first
4234: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4235: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4236:
4237: <p>If no match can be made, then this is a <a href="#parse-error">parse
4238: error</a>. No characters are consumed, and nothing is
4239: returned.</p>
4240:
1.588 mike 4241: <p>If the last character matched is not a U+003B SEMICOLON
4242: character (;), there is a <a href="#parse-error">parse error</a>.</p>
1.1 mike 4243:
4244: <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
4245: attribute</a>, and the last character matched is not a U+003B
1.588 mike 4246: SEMICOLON character (;), and the next character is in the range
4247: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0041 LATIN
4248: CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z, or U+0061 LATIN
4249: SMALL LETTER A to U+007A LATIN SMALL LETTER Z, then, for
4250: historical reasons, all the characters that were matched after the
4251: U+0026 AMPERSAND character (&) must be unconsumed, and nothing
4252: is returned.</p>
1.1 mike 4253:
4254: <p>Otherwise, return a character token for the character
4255: corresponding to the character reference name (as given by the
4256: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4257: table).</p>
4258:
4259: <div class="example">
4260:
4261: <p>If the markup contains <code title="">I'm &notit; I tell
4262: you</code>, the character reference is parsed as "not", as in,
4263: <code title="">I'm ¬it; I tell you</code>. But if the markup
4264: was <code title="">I'm &notin; I tell you</code>, the
4265: character reference would be parsed as "notin;", resulting in
4266: <code title="">I'm ∉ I tell you</code>.</p>
4267:
4268: </div>
4269:
4270: </dd>
4271:
1.266 mike 4272: </dl></div><div class="impl">
4273:
1.363 mike 4274: <!-- v2: One thing that this doesn't define is handling deeply
4275: nested documents. There are compatibility requirements around that:
4276: you can't throw away the elements altogether, consider Tux made only
4277: with opening <font> elements, one per character. Seems that the best
4278: thing to do is to close some formatting elements from the middle of
4279: the stack when you hit a limit, or something. -->
4280:
1.724 mike 4281: <h4 id="tree-construction"><span class="secno">7.2.5 </span><dfn>Tree construction</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4282:
4283: <p>The input to the tree construction stage is a sequence of tokens
4284: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4285: stage is associated with a DOM <code>Document</code> object when a
4286: parser is created. The "output" of this stage consists of
4287: dynamically modifying or extending that document's DOM tree.</p>
4288:
4289: <p>This specification does not define when an interactive user agent
4290: has to render the <code>Document</code> so that it is available to
4291: the user, or when it has to begin accepting user input.</p>
4292:
4293: <p>As each token is emitted from the tokenizer, the user agent must
4294: process the token according to the rules given in the section
4295: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4296:
4297: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4298: character</dfn> into a node, if that node has a child immediately
4299: before where the character is to be inserted, and that child is a
4300: <code>Text</code> node, and that <code>Text</code> node was the last
4301: node that the parser inserted into the document, then the character
4302: must be appended to that <code>Text</code> node; otherwise, a new
4303: <code>Text</code> node whose data is just that character must be
4304: inserted in the appropriate place.</p>
4305:
4306: <div class="example">
4307:
4308: <p>Here are some sample inputs to the parser and the corresponding
4309: number of text nodes that they result in, assuming a user agent
4310: that executes scripts.</p>
4311:
4312: <table><thead><tr><th>Input </th><th>Number of text nodes
4313: </th></tr></thead><tbody><tr><td><pre>A<script>
4314: var script = document.getElementsByTagName('script')[0];
4315: document.body.removeChild(script);
4316: </script>B</pre>
4317: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4318: </td></tr><tr><td><pre>A<script>
4319: var text = document.createTextNode('B');
4320: document.body.appendChild(text);
4321: </script>C</pre>
4322: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4323: </td></tr><tr><td><pre>A<script>
4324: var text = document.getElementsByTagName('script')[0].firstChild;
4325: text.data = 'B';
4326: document.body.appendChild(text);
4327: </script>B</pre>
4328: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4329: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4330: </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>.)
4331: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4332: </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>.)
4333: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4334: </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.)
4335: </td></tr></tbody></table></div>
4336:
4337: <p id="mutation-during-parsing">DOM mutation events must not fire
4338: for changes caused by the UA parsing the document. (Conceptually,
4339: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4340: 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 4341:
4342: <p class="note">Not all of the tag names mentioned below are
4343: conformant tag names in this specification; many are included to
4344: handle legacy content. They still form part of the algorithm that
4345: implementations are required to implement to claim conformance.</p>
4346:
4347: <p class="note">The algorithm described below places no limit on the
4348: depth of the DOM tree generated, or on the length of tag names,
4349: attribute names, attribute values, text nodes, etc. While
4350: implementors are encouraged to avoid arbitrary limits, it is
4351: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4352: concerns</a> will likely force user agents to impose nesting depth
4353: constraints.</p>
1.1 mike 4354:
4355:
1.724 mike 4356: <h5 id="creating-and-inserting-elements"><span class="secno">7.2.5.1 </span>Creating and inserting elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4357:
4358: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4359: element for the token">create an element for a token</dfn> in a
4360: particular namespace, the UA must create a node implementing the
4361: interface appropriate for the element type corresponding to the tag
4362: name of the token in the given namespace (as given in the
4363: 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 4364: element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, this specification
1.1 mike 4365: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4366: the tag name being the name of that element, with the node being in
4367: the given namespace, and with the attributes on the node being those
4368: given in the given token.</p>
4369:
1.724 mike 4370: <p>The interface appropriate for an element in the <a href="infrastructure.html#html-namespace-0">HTML
1.426 mike 4371: namespace</a> that is not defined in this specification (or
4372: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4373: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4374: interface is not defined by that namespace's specification must use
4375: the interface <code>Element</code>.</p>
4376:
4377: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4378: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4379: invoked once the attributes are set. (This initializes the element's
4380: <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
4381: attributes.)</p>
4382:
4383: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4384: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
1.724 mike 4385: for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, and then
1.1 mike 4386: append this node to the <a href="#current-node">current node</a>, and push it onto
4387: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4388: <a href="#current-node">current node</a>.</p>
4389:
4390: <p>The steps below may also require that the UA insert an HTML
4391: element in a particular place, in which case the UA must follow the
4392: same steps except that it must insert or append the new node in the
4393: location specified instead of appending it to the <a href="#current-node">current
4394: node</a>. (This happens in particular during the parsing of
4395: tables with invalid content.)</p>
4396:
4397: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4398: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4399: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4400: 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
4401: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4402: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4403: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4404: inserting it wherever it is to be inserted.</p>
4405:
4406: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4407: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4408: for the token</a> in the given namespace, and then append this
4409: node to the <a href="#current-node">current node</a>, and push it onto the
4410: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
1.724 mike 4411: <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 4412: whose value is not exactly the same as the element's namespace, that
4413: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4414: element has an <code title="">xmlns:xlink</code> attribute in the
1.724 mike 4415: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="infrastructure.html#xlink-namespace">XLink
1.1 mike 4416: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4417:
4418: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4419: attributes</dfn> for a token, then, if the token has an attribute
4420: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4421:
4422: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4423: attributes</dfn> for a token, then, for each attribute on the token
4424: whose attribute name is one of the ones in the first column of the
4425: following table, change the attribute's name to the name given in
4426: the corresponding cell in the second column. (This fixes the case of
4427: SVG attributes that are not all lowercase.)</p>
4428:
4429: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4430: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4431: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4432: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4433: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4434: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4435: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4436: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4437: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4438: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4439: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4440: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4441: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4442: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4443: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4444: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4445: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4446: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4447: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4448: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4449: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4450: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4451: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4452: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4453: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4454: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4455: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4456: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4457: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4458: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4459: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4460: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4461: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4462: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4463: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4464: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4465: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4466: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4467: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4468: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4469: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4470: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4471: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4472: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4473: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4474: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4475: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4476: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4477: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4478: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4479: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4480: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4481: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4482: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4483: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4484: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4485: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4486: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4487: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4488: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4489: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4490: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4491: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4492: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4493: foreign attributes</dfn> for a token, then, if any of the attributes
4494: on the token match the strings given in the first column of the
4495: following table, let the attribute be a namespaced attribute, with
4496: the prefix being the string given in the corresponding cell in the
4497: second column, the local name being the string given in the
4498: corresponding cell in the third column, and the namespace being the
4499: namespace given in the corresponding cell in the fourth
4500: column. (This fixes the use of namespaced attributes, in particular
4501: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4502: the <span>XML namespace</span></a>.)</p>
4503:
4504: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
1.724 mike 4505: </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>
4506: </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>
4507: </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>
4508: </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>
4509: </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>
4510: </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>
4511: </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>
4512: </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 -->
4513: </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>
4514: </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>
4515: </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>
4516: </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 4517: </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 4518: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4519: following steps. These algorithms are always invoked in response to
4520: a start tag token.</p>
4521:
4522: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4523:
1.91 mike 4524: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4525: text element parsing algorithm</a>, switch the tokenizer to the
4526: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4527: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4528: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4529:
4530: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4531: <a href="#insertion-mode">insertion mode</a>.</p>
4532:
1.540 mike 4533: </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 4534:
1.724 mike 4535: </ol><h5 id="closing-elements-that-have-implied-end-tags"><span class="secno">7.2.5.2 </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 4536:
4537: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4538: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4539: <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 4540: <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
4541: <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
4542: <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
4543: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4544: elements</a>.</p>
4545:
4546: <p>If a step requires the UA to generate implied end tags but lists
4547: an element to exclude from the process, then the UA must perform the
4548: above steps as if that element was not in the above list.</p>
4549:
4550:
1.724 mike 4551: <h5 id="foster-parenting"><span class="secno">7.2.5.3 </span>Foster parenting</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4552:
4553: <p>Foster parenting happens when content is misnested in tables.</p>
4554:
4555: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4556: parent">foster parented</dfn>, the node <var title="">node</var>
4557: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4558:
4559: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4560: 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
4561: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4562: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4563: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4564: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4565: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4566: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4567: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4568: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4569: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4570: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4571: the element before 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>.</p>
4573:
4574: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4575: 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
4576: elements</a>, then <var title="">node</var> must be inserted
4577: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4578: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4579: element</a></i>; otherwise, <var title="">node</var> must be
4580: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4581:
4582:
4583:
1.724 mike 4584: <h5 id="the-initial-insertion-mode"><span class="secno">7.2.5.4 </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 4585:
4586: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4587: mode: initial">initial</a>", tokens must be handled as follows:</p>
4588:
4589: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4590: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4591: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4592: <dd>
4593: <p>Ignore the token.</p>
4594: </dd>
4595:
4596: <dt>A comment token</dt>
4597: <dd>
4598: <p>Append a <code>Comment</code> node to the <code>Document</code>
4599: object with the <code title="">data</code> attribute set to the
4600: data given in the comment token.</p>
4601: </dd>
4602:
4603: <dt>A DOCTYPE token</dt>
4604: <dd>
4605:
4606: <p>If the DOCTYPE token's name is not a
4607: <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
4608: missing, or the token's system identifier is neither missing nor a
4609: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4610: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4611: conditions in the following list are matched, then there is a
4612: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4613: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4614: permitted DOCTYPE</dfn>.</p>
4615:
4616: <ul><!-- only things that trigger no-quirks mode and were valid in
1.688 mike 4617: 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>
4618: match for the string "<code title="">html</code>", the token's
4619: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4620: "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and
4621: the token's system identifier is either missing or the
1.1 mike 4622: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4623:
1.688 mike 4624: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4625: match for the string "<code title="">html</code>", the token's
4626: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4627: "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and
4628: the token's system identifier is either missing or the
1.1 mike 4629: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4630:
1.688 mike 4631: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4632: match for the string "<code title="">html</code>", the token's
4633: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4634: "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
1.1 mike 4635: and the token's system identifier is the
4636: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4637:
1.688 mike 4638: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4639: match for the string "<code title="">html</code>", the token's
4640: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4641: "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and
4642: the token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
1.1 mike 4643: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4644:
4645: </ul><p>Conformance checkers may, based on the values (including
4646: presence or lack thereof) of the DOCTYPE token's name, public
4647: identifier, or system identifier, switch to a conformance checking
4648: mode for another language (e.g. based on the DOCTYPE token a
4649: conformance checker could recognize that the document is an
1.183 mike 4650: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4651: checker.)</p>
4652:
4653: <p>Append a <code>DocumentType</code> node to the
4654: <code>Document</code> node, with the <code title="">name</code>
4655: attribute set to the name given in the DOCTYPE token, or the empty
4656: string if the name was missing; the <code title="">publicId</code>
4657: attribute set to the public identifier given in the DOCTYPE token,
4658: or the empty string if the public identifier was missing; the
4659: <code title="">systemId</code> attribute set to the system
4660: identifier given in the DOCTYPE token, or the empty string if the
4661: system identifier was missing; and the other attributes specific
4662: to <code>DocumentType</code> objects set to null and empty lists
4663: as appropriate. Associate the <code>DocumentType</code> node with
4664: the <code>Document</code> object so that it is returned as the
4665: value of the <code title="">doctype</code> attribute of the
4666: <code>Document</code> object.</p>
4667:
4668: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4669: one of the conditions in the following list, then set the
4670: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4671:
4672: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
1.688 mike 4673: <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 4674: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4675: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4676: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4677: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4678: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4679: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4680: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4681: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4682: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4683: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4684: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4685: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4686: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4687: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4688: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4689: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4690: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4691: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4692: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4693: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4694: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4695: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4696: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4697: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4698: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4699: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4700: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4701: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4702: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4703: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4704: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4705: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4706: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4707: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4708: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4709: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4710: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4711: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4712: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4713: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4714: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4715: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4716: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4717: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4718: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4719: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4720: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4721: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4722: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4723: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4724: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4725: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4726: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4727: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4728: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4729: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4730: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4731: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4732: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4733: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4734: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4735: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4736: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4737: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4738: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4739: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4740: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4741: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4742: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4743: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4744: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4745: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4746: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4747: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4748: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4749: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4750: in the following list, then set the <code>Document</code> to
4751: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4752:
4753: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4754: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4755: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4756: <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 4757: </ul><p>The system identifier and public identifier strings must be
4758: compared to the values given in the lists above in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
4759: case-insensitive</a> manner. A system identifier whose value is
4760: the empty string is not considered missing for the purposes of the
4761: conditions above.</p>
1.1 mike 4762:
4763: <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>
4764:
4765: </dd>
4766:
4767: <dt>Anything else</dt>
4768: <dd>
4769:
1.727 mike 4770: <p>If the document is <em>not</em> <a href="text-level-semantics.html#an-iframe-srcdoc-document">an <code>iframe</code>
4771: <code title="attr-iframe-srcdoc">srcdoc</code> document</a>,
4772: then this is a <a href="#parse-error">parse error</a>; set the
4773: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
1.1 mike 4774:
1.727 mike 4775: <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 4776: reprocess the current token.</p>
4777:
4778: </dd>
4779:
1.724 mike 4780: </dl><h5 id="the-before-html-insertion-mode"><span class="secno">7.2.5.5 </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 4781:
4782: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4783: mode: before html">before html</a>", tokens must be handled as follows:</p>
4784:
4785: <dl class="switch"><dt>A DOCTYPE token</dt>
4786: <dd>
4787: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4788: </dd>
4789:
4790: <dt>A comment token</dt>
4791: <dd>
4792: <p>Append a <code>Comment</code> node to the <code>Document</code>
4793: object with the <code title="">data</code> attribute set to the
4794: data given in the comment token.</p>
4795: </dd>
4796:
4797: <dt>A character token that is one of U+0009 CHARACTER
4798: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4799: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4800: <dd>
4801: <p>Ignore the token.</p>
4802: </dd>
4803:
4804: <dt>A start tag whose tag name is "html"</dt>
4805: <dd>
4806:
1.724 mike 4807: <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 4808: namespace</a>. Append it to the <code>Document</code>
4809: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4810: elements</a>.</p>
4811:
4812: <p id="parser-appcache">If the <code>Document</code> is being
4813: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4814: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4815: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4816: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4817: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4818: 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 4819: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4820: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4821: removed; otherwise, if there is no such attribute or resolving it
4822: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4823: cache selection algorithm</a> with no manifest. The algorithm
4824: must be passed the <code>Document</code> object.</p>
1.1 mike 4825:
4826: <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>
4827:
4828: </dd>
4829:
1.334 mike 4830: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4831: <dd>
4832: <p>Act as described in the "anything else" entry below.</p>
4833: </dd>
4834:
4835: <dt>Any other end tag</dt>
4836: <dd>
4837: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4838: </dd>
4839:
1.1 mike 4840: <dt>Anything else</dt>
4841: <dd>
4842:
1.159 mike 4843: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4844: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4845: of open elements</a>.</p>
4846:
4847: <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
4848: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4849: algorithm</a> with no manifest, passing it the
4850: <code>Document</code> object.</p>
4851:
4852: <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
4853: reprocess the current token.</p>
4854:
4855: </dd>
4856:
4857: </dl><p>The root element can end up being removed from the
4858: <code>Document</code> object, e.g. by scripts; nothing in particular
4859: happens in such cases, content continues being appended to the nodes
4860: as described in the next section.</p>
4861:
4862:
1.724 mike 4863: <h5 id="the-before-head-insertion-mode"><span class="secno">7.2.5.6 </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 4864:
4865: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4866: mode: before head">before head</a>", tokens must be handled as follows:</p>
4867:
4868: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4869: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4870: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4871: <dd>
4872: <p>Ignore the token.</p> <!-- :-( -->
4873: </dd>
4874:
4875: <dt>A comment token</dt>
4876: <dd>
4877: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4878: node</a> with the <code title="">data</code> attribute set to
4879: the data given in the comment token.</p>
4880: </dd>
4881:
4882: <dt>A DOCTYPE token</dt>
4883: <dd>
4884: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4885: </dd>
4886:
4887: <dt>A start tag whose tag name is "html"</dt>
4888: <dd>
4889: <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
4890: mode</a>.</p>
4891: </dd>
4892:
4893: <dt>A start tag whose tag name is "head"</dt>
4894: <dd>
4895:
4896: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4897:
4898: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4899: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4900:
4901: <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>
4902:
4903: </dd>
4904:
4905: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4906: <dd>
4907:
4908: <p>Act as if a start tag token with the tag name "head" and no
4909: attributes had been seen, then reprocess the current token.</p>
4910:
4911: </dd>
4912:
4913: <dt>Any other end tag</dt>
4914: <dd>
4915:
4916: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4917:
4918: </dd>
4919:
4920: <dt>Anything else</dt>
4921: <dd>
4922:
4923: <p>Act as if a start tag token with the tag name "head" and no
4924: attributes had been seen, then reprocess the current
4925: token.</p>
4926:
4927: </dd>
4928:
1.724 mike 4929: </dl><h5 id="parsing-main-inhead"><span class="secno">7.2.5.7 </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 4930:
4931: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4932: mode: in head">in head</a>", tokens must be handled as follows:</p>
4933:
4934: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4935: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4936: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4937: <dd>
4938: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4939: the <a href="#current-node">current node</a>.</p>
4940: </dd>
4941:
4942: <dt>A comment token</dt>
4943: <dd>
4944: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4945: node</a> with the <code title="">data</code> attribute set to
4946: the data given in the comment token.</p>
4947: </dd>
4948:
4949: <dt>A DOCTYPE token</dt>
4950: <dd>
4951: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4952: </dd>
4953:
4954: <dt>A start tag whose tag name is "html"</dt>
4955: <dd>
4956: <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
4957: mode</a>.</p>
4958: </dd>
4959:
4960: <dt>A start tag whose tag name is one of: "base", "command",
4961: "link"</dt>
4962: <dd>
4963:
4964: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4965: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4966: elements</a>.</p>
4967:
4968: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4969: token's <i>self-closing flag</i></a>, if it is set.</p>
4970:
4971: </dd>
4972:
4973: <dt>A start tag whose tag name is "meta"</dt>
4974: <dd>
4975:
4976: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4977: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4978: elements</a>.</p>
4979:
4980: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4981: token's <i>self-closing flag</i></a>, if it is set.</p>
4982:
4983: <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
4984: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4985: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4986: encoding</a> to the encoding given by the value of the
4987: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4988:
4989: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4990: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4991: Content-Type</a> to its value returns a supported encoding
4992: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4993: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4994: encoding</a> to the encoding <var title="">encoding</var>.</p>
4995:
4996: </dd>
4997:
4998: <dt>A start tag whose tag name is "title"</dt>
4999: <dd>
5000: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
5001: </dd>
5002:
5003: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
5004: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
5005: <dd>
1.91 mike 5006: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 5007: </dd>
5008:
5009: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
5010: <dd>
5011:
5012: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5013:
5014: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
5015: noscript</a>".</p>
5016:
5017: </dd>
5018:
5019: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
5020: <dd>
5021:
5022: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
1.724 mike 5023: <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</p></li>
1.1 mike 5024:
5025: <li>
5026:
5027: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
5028:
5029: <p class="note">This ensures that, if the script is external,
1.159 mike 5030: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 5031: calls in the script will execute in-line, instead of blowing the
5032: document away, as would happen in most other cases. It also
5033: prevents the script from executing until the end tag is
5034: seen.</p>
5035:
5036: </li>
5037:
5038: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
5039: fragment parsing algorithm</a>, then mark the
1.484 mike 5040: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
5041: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 5042:
5043: <li><p>Append the new element to the <a href="#current-node">current node</a>
5044: and push it onto the <a href="#stack-of-open-elements">stack of open
5045: elements</a>.</p></li>
5046:
1.541 mike 5047: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
5048: state</a>.</p></li>
1.1 mike 5049:
5050: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
5051: <a href="#insertion-mode">insertion mode</a>.</p>
5052:
1.540 mike 5053: </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 5054:
5055: </ol></dd>
5056:
5057: <dt>An end tag whose tag name is "head"</dt>
5058: <dd>
5059:
5060: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 5061: <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 5062: elements</a>.</p>
5063:
5064: <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>
5065:
5066: </dd>
5067:
5068: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5069: <dd>
5070: <p>Act as described in the "anything else" entry below.</p>
5071: </dd>
5072:
5073: <dt>A start tag whose tag name is "head"</dt>
5074: <dt>Any other end tag</dt>
5075: <dd>
5076: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5077: </dd>
5078:
5079: <dt>Anything else</dt>
5080: <dd>
5081:
5082: <!-- can't get here with an EOF and a fragment case -->
5083:
5084: <p>Act as if an end tag token with the tag name "head" had
5085: been seen, and reprocess the current token.</p>
5086:
5087: </dd>
5088:
1.724 mike 5089: </dl><h5 id="parsing-main-inheadnoscript"><span class="secno">7.2.5.8 </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 5090:
5091: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
5092: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
5093:
5094: <dl class="switch"><dt>A DOCTYPE token</dt>
5095: <dd>
5096: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5097: </dd>
5098:
5099: <dt>A start tag whose tag name is "html"</dt>
5100: <dd>
5101: <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
5102: mode</a>.</p>
5103: </dd>
5104:
5105: <dt>An end tag whose tag name is "noscript"</dt>
5106: <dd>
5107:
5108: <p>Pop the <a href="#current-node">current node</a> (which will be a
5109: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
5110: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 5111: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 5112:
5113: <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>
5114:
5115: </dd>
5116:
5117: <dt>A character token that is one of U+0009 CHARACTER
5118: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5119: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5120: <dt>A comment token</dt>
5121: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
5122: <dd>
5123: <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
5124: mode</a>.</p>
5125: </dd>
5126:
5127: <dt>An end tag whose tag name is "br"</dt>
5128: <dd>
5129: <p>Act as described in the "anything else" entry below.</p>
5130: </dd>
5131:
5132: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5133: <dt>Any other end tag</dt>
5134: <dd>
5135: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5136: </dd>
5137:
5138: <dt>Anything else</dt>
5139: <dd>
5140:
5141: <!-- can't get here with an EOF and a fragment case -->
5142:
5143: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5144: name "noscript" had been seen and reprocess the current
5145: token.</p>
5146:
5147: </dd>
5148:
1.724 mike 5149: </dl><h5 id="the-after-head-insertion-mode"><span class="secno">7.2.5.9 </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 5150:
5151: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5152: mode: after head">after head</a>", tokens must be handled as follows:</p>
5153:
5154: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5155: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5156: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5157: <dd>
5158: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5159: the <a href="#current-node">current node</a>.</p>
5160: </dd>
5161:
5162: <dt>A comment token</dt>
5163: <dd>
5164: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5165: node</a> with the <code title="">data</code> attribute set to
5166: the data given in the comment token.</p>
5167: </dd>
5168:
5169: <dt>A DOCTYPE token</dt>
5170: <dd>
5171: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5172: </dd>
5173:
5174: <dt>A start tag whose tag name is "html"</dt>
5175: <dd>
5176: <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
5177: mode</a>.</p>
5178: </dd>
5179:
5180: <dt>A start tag whose tag name is "body"</dt>
5181: <dd>
5182:
5183: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5184:
5185: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5186:
5187: <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>
5188:
5189: </dd>
5190:
5191: <dt>A start tag whose tag name is "frameset"</dt>
5192: <dd>
5193:
5194: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5195:
5196: <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>
5197:
5198: </dd>
5199:
5200: <dt>A start tag token whose tag name is one of: "base", "link",
5201: "meta", "noframes", "script", "style", "title"</dt>
5202: <dd>
5203:
5204: <p><a href="#parse-error">Parse error</a>.</p>
5205:
5206: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5207: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5208:
5209: <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
5210: mode</a>.</p>
5211:
5212: <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
5213: of open elements</a>.</p>
5214:
5215: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5216: pointer</a> cannot be null at this point.</p>
5217:
5218: </dd>
5219:
5220: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5221: <dd>
5222: <p>Act as described in the "anything else" entry below.</p>
5223: </dd>
5224:
5225: <dt>A start tag whose tag name is "head"</dt>
5226: <dt>Any other end tag</dt>
5227: <dd>
5228: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5229: </dd>
5230:
5231: <dt>Anything else</dt>
5232: <dd>
5233: <p>Act as if a start tag token with the tag name "body" and no
5234: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5235: flag</a> back to "ok", and then reprocess the current
5236: token.</p>
5237: </dd>
5238:
1.724 mike 5239: </dl><h5 id="parsing-main-inbody"><span class="secno">7.2.5.10 </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 5240:
5241: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5242: mode: in body">in body</a>", tokens must be handled as follows:</p>
5243:
5244: <dl class="switch"><dt>A character token</dt>
5245: <dd>
5246:
5247: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5248: any.</p>
5249:
5250: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5251: character</a> into the <a href="#current-node">current node</a>.</p>
5252:
5253: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5254: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5255: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5256: flag</a> to "not ok".</p>
5257:
5258: </dd>
5259:
5260: <dt>A comment token</dt>
5261: <dd>
5262: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5263: node</a> with the <code title="">data</code> attribute set to
5264: the data given in the comment token.</p>
5265: </dd>
5266:
5267: <dt>A DOCTYPE token</dt>
5268: <dd>
5269: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5270: </dd>
5271:
5272: <dt>A start tag whose tag name is "html"</dt>
5273: <dd>
5274: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5275: check to see if the attribute is already present on the top
5276: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5277: add the attribute and its corresponding value to that element.</p>
5278: </dd>
5279:
5280: <dt>A start tag token whose tag name is one of: "base", "command",
5281: "link", "meta", "noframes", "script", "style", "title"</dt>
5282: <dd>
5283: <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
5284: mode</a>.</p>
5285: </dd>
5286:
5287: <dt>A start tag whose tag name is "body"</dt>
5288: <dd>
5289:
5290: <p><a href="#parse-error">Parse error</a>.</p>
5291:
5292: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5293: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5294: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5295: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5296:
5297: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5298: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5299: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5300: elements</a>. If it is not, add the attribute and its
5301: corresponding value to that element.</p>
5302:
5303: </dd>
5304:
5305: <dt>A start tag whose tag name is "frameset"</dt>
5306: <dd>
5307:
5308: <p><a href="#parse-error">Parse error</a>.</p>
5309:
5310: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5311: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5312: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5313: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5314:
5315: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5316: the token.</p>
5317:
5318: <p>Otherwise, run the following steps:</p>
5319:
5320: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5321: elements</a> from its parent node, if it has one.</p></li>
5322:
5323: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5324: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5325: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5326:
5327: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5328: token.</p></li>
5329:
5330: <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>
5331:
5332: </li></ol></dd>
5333:
5334: <dt>An end-of-file token</dt>
5335: <dd>
5336:
5337: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5338: 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>
5339: 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 5340: <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
5341: <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
5342: <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 5343: <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 5344: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5345: fragment cases) -->
1.1 mike 5346:
5347: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5348:
5349: </dd>
5350:
5351: <dt>An end tag whose tag name is "body"</dt>
5352: <dd>
5353:
5354: <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
5355: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5356: token.</p>
5357:
5358: <!-- if we get here, the insertion mode here is forcibly "in
5359: body". -->
5360:
5361: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5362: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5363: <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
5364: <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
5365: <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
5366: <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
5367: <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
5368: <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 5369: <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
5370: <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 5371: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5372: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5373: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5374:
5375: <!-- If we ever change the frameset-ok flag to an insertion mode,
5376: then we'd have to somehow keep track of its state when we switch
5377: to after-body. -->
5378:
5379: <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>
5380:
5381: </dd>
5382:
5383: <dt>An end tag whose tag name is "html"</dt>
5384: <dd>
5385:
5386: <p>Act as if an end tag with tag name "body" had been seen,
5387: then, if that token wasn't ignored, reprocess the current
5388: token.</p>
5389:
5390: </dd>
5391:
5392: <!-- start tags for non-phrasing flow content elements -->
5393:
5394: <!-- the normal ones -->
5395: <dt>A start tag whose tag name is one of: "address", "article",
1.683 mike 5396: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5397: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5398: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5399: <dd>
5400:
5401: <!-- As of May 2008 this doesn't match any browser exactly, but is
5402: as close to what IE does as I can get without doing the non-tree
5403: DOM nonsense, and thus should actually afford better compatibility
5404: when implemented by the other browsers. -->
5405:
5406: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5407: an element in scope">has a <code>p</code> element in
5408: scope</a>, then act as if an end tag with the tag name
5409: "p" had been seen.</p>
5410:
5411: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5412:
5413: </dd>
5414:
5415: <!-- as normal, but close h1-h6 if it's the current node -->
5416: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5417: "h5", "h6"</dt>
5418: <dd>
5419:
5420: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5421: an element in scope">has a <code>p</code> element in
5422: scope</a>, then act as if an end tag with the tag name
5423: "p" had been seen.</p>
5424:
5425: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5426: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5427: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5428: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5429: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5430:
5431: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5432:
5433: </dd>
5434:
5435: <!-- as normal, but drops leading newline -->
5436: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5437: <dd>
5438:
5439: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5440: an element in scope">has a <code>p</code> element in
5441: scope</a>, then act as if an end tag with the tag name
5442: "p" had been seen.</p>
5443:
5444: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5445:
5446: <p>If the next token is a U+000A LINE FEED (LF) character
5447: token, then ignore that token and move on to the next
5448: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5449: ignored as an authoring convenience.)</p>
5450:
5451: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5452:
5453: </dd>
5454:
5455: <!-- as normal, but interacts with the form element pointer -->
5456: <dt>A start tag whose tag name is "form"</dt>
5457: <dd>
5458:
5459: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5460: pointer</a> is not null, then this is a <a href="#parse-error">parse
5461: error</a>; ignore the token.</p>
5462:
5463: <p>Otherwise:</p>
5464:
5465: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5466: an element in scope">has a <code>p</code> element in
5467: scope</a>, then act as if an end tag with the tag name
5468: "p" had been seen.</p>
5469:
5470: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5471: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5472: point to the element created.</p>
5473:
5474: </dd>
5475:
5476: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5477: <dt>A start tag whose tag name is "li"</dt>
5478: <dd>
5479:
5480: <p>Run the following algorithm:</p>
5481:
5482: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5483:
5484: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5485: node</a> (the bottommost node of the stack).</p></li>
5486:
1.578 mike 5487: <li><p><i>Loop</i>: If <var title="">node</var> is an
5488: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5489: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5490:
1.578 mike 5491: <li><p>If <var title="">node</var> is not in the
1.1 mike 5492: <a href="#formatting">formatting</a> category, and is not in the
5493: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5494: <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 5495: element, then jump to the last step.</p></li> <!-- an element
5496: <foo> is in this list if the following markup:
5497:
5498: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5499:
5500: ...results in the second <li> not being (in any way) a descendant
5501: of the first <li>, or if <foo> is a formatting element that gets
5502: reopened later. -->
5503:
5504: <li><p>Otherwise, set <var title="">node</var> to the previous
5505: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5506: the step labeled <i>loop</i>.</p></li>
5507:
5508: <li>
5509:
5510: <p>This is the last step.</p>
5511:
5512: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5513: an element in scope">has a <code>p</code> element in
5514: scope</a>, then act as if an end tag with the tag name
5515: "p" had been seen.</p>
5516:
5517: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5518: token.</p>
5519:
5520: </li>
5521:
5522: </ol></dd>
5523:
5524: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5525: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5526: <dd>
5527:
5528: <p>Run the following algorithm:</p>
5529:
5530: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5531:
5532: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5533: node</a> (the bottommost node of the stack).</p></li>
5534:
5535: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5536: <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
5537: tag with the same tag name as <var title="">node</var> had been
5538: seen, then jump to the last step.</p></li>
1.1 mike 5539:
5540: <li><p>If <var title="">node</var> is not in the
5541: <a href="#formatting">formatting</a> category, and is not in the
5542: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5543: <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 5544: element, then jump to the last step.</p></li> <!-- an element
5545: <foo> is in this list if the following markup:
5546:
5547: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5548:
5549: ...results in the second <dt> not being (in any way) a descendant
5550: of the first <dt>, or if <foo> is a formatting element that gets
5551: reopened later. -->
5552:
5553: <li><p>Otherwise, set <var title="">node</var> to the previous
5554: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5555: the step labeled <i>loop</i>.</p></li>
5556:
5557: <li>
5558:
5559: <p>This is the last step.</p>
5560:
5561: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5562: an element in scope">has a <code>p</code> element in
5563: scope</a>, then act as if an end tag with the tag name
5564: "p" had been seen.</p>
5565:
5566: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5567: token.</p>
5568:
5569: </li>
5570:
5571: </ol></dd>
5572:
5573: <!-- same as normal, but effectively ends parsing -->
5574: <dt>A start tag whose tag name is "plaintext"</dt>
5575: <dd>
5576:
5577: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5578: an element in scope">has a <code>p</code> element in
5579: scope</a>, then act as if an end tag with the tag name
5580: "p" had been seen.</p>
5581:
5582: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5583:
1.541 mike 5584: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5585:
1.541 mike 5586: <p class="note">Once a start tag with the tag name "plaintext" has
5587: been seen, that will be the last token ever seen other than
5588: character tokens (and the end-of-file token), because there is no
5589: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5590:
5591: </dd>
5592:
5593: <!-- end tags for non-phrasing flow content elements -->
5594:
5595: <!-- the normal ones -->
5596: <dt>An end tag whose tag name is one of: "address", "article",
1.683 mike 5597: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5598: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5599: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5600: "section", "ul"</dt>
1.1 mike 5601: <dd>
5602:
5603: <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>
5604: with the same tag name as that of the token, then this is a
5605: <a href="#parse-error">parse error</a>; ignore the token.</p>
5606:
5607: <p>Otherwise, run these steps:</p>
5608:
5609: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5610:
5611: <li><p>If the <a href="#current-node">current node</a> is not an element with
5612: the same tag name as that of the token, then this is a
5613: <a href="#parse-error">parse error</a>.</p></li>
5614:
5615: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5616: until an element with the same tag name as the token has been
5617: popped from the stack.</p></li>
5618:
5619: </ol></dd>
5620:
5621: <!-- removes the form element pointer instead of the matching node -->
5622: <dt>An end tag whose tag name is "form"</dt>
5623: <dd>
5624:
5625: <p>Let <var title="">node</var> be the element that the
5626: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5627: to.</p>
5628:
5629: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5630: to null.</p>
5631:
5632: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5633: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5634: scope">have <var title="">node</var> in scope</a>, then this is
5635: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5636:
5637: <p>Otherwise, run these steps:</p>
5638:
5639: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5640:
5641: <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
5642: error</a>.</p></li>
5643:
5644: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5645: open elements</a>.</p></li>
5646:
5647: </ol></dd>
5648:
5649: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5650: <dt>An end tag whose tag name is "p"</dt>
5651: <dd>
5652:
5653: <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>
5654: with the same tag name as that of the token, then this is a
5655: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5656: "p" had been seen, then reprocess the current token.</p>
5657:
5658: <p>Otherwise, run these steps:</p>
5659:
5660: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5661: for elements with the same tag name as the token.</p></li>
5662:
5663: <li><p>If the <a href="#current-node">current node</a> is not an element with
5664: the same tag name as that of the token, then this is a
5665: <a href="#parse-error">parse error</a>.</p></li>
5666:
5667: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5668: until an element with the same tag name as the token has been
5669: popped from the stack.</p></li>
5670:
5671: </ol></dd>
5672:
1.234 mike 5673: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5674: <dt>An end tag whose tag name is "li"</dt>
5675: <dd>
5676:
5677: <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
5678: item scope</a> with the same tag name as that of the token,
5679: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5680:
5681: <p>Otherwise, run these steps:</p>
5682:
5683: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5684: for elements with the same tag name as the token.</p></li>
5685:
5686: <li><p>If the <a href="#current-node">current node</a> is not an element with
5687: the same tag name as that of the token, then this is a
5688: <a href="#parse-error">parse error</a>.</p></li>
5689:
5690: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5691: until an element with the same tag name as the token has been
5692: popped from the stack.</p></li>
5693:
5694: </ol></dd>
5695:
1.1 mike 5696: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5697: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5698: <dd>
5699:
5700: <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>
5701: with the same tag name as that of the token, then this is a
5702: <a href="#parse-error">parse error</a>; ignore the token.</p>
5703:
5704: <p>Otherwise, run these steps:</p>
5705:
5706: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5707: for elements with the same tag name as the token.</p></li>
5708:
5709: <li><p>If the <a href="#current-node">current node</a> is not an element with
5710: the same tag name as that of the token, then this is a
5711: <a href="#parse-error">parse error</a>.</p></li>
5712:
5713: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5714: until an element with the same tag name as the token has been
5715: popped from the stack.</p></li>
5716:
5717: </ol></dd>
5718:
5719: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5720: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5721: <dd>
5722:
5723: <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>
5724: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5725: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5726:
5727: <p>Otherwise, run these steps:</p>
5728:
5729: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5730:
5731: <li><p>If the <a href="#current-node">current node</a> is not an element with
5732: the same tag name as that of the token, then this is a
5733: <a href="#parse-error">parse error</a>.</p></li>
5734:
5735: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5736: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5737: "h5", or "h6" has been popped from the stack.</p></li>
5738:
5739: </ol></dd>
5740:
5741: <dt>An end tag whose tag name is "sarcasm"</dt>
5742: <dd>
5743: <p>Take a deep breath, then act as described in the "any other end
5744: tag" entry below.</p>
5745: </dd>
5746:
5747: <!-- ADOPTION AGENCY ELEMENTS
5748: Mozilla-only: bdo blink del ins sub sup q
5749: Safari-only: code dfn kbd nobr samp var wbr
5750: Both: a b big em font i s small strike strong tt u -->
5751:
5752: <dt>A start tag whose tag name is "a"</dt>
5753: <dd>
5754:
5755: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5756: contains an element whose tag name is "a" between the end of
5757: the list and the last marker on the list (or the start of the
5758: list if there is no marker on the list), then this is a
5759: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5760: name "a" had been seen, then remove that element from the
5761: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5762: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5763: already remove it (it might not have if the element is not
5764: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5765: scope</a>).</p>
5766:
5767: <p class="example">In the non-conforming stream
5768: <code><a href="a">a<table><a href="b">b</table>x</code>,
5769: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5770: the second one, and the "x" character would be inside a link
5771: to "b", not to "a". This is despite the fact that the outer
5772: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5773: regular <code></a></code> end tag at the start of the table
5774: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5775:
5776: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5777: any.</p>
5778:
5779: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5780: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5781: elements</a>.</p>
5782:
5783: </dd>
5784:
5785: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5786: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5787: <dd>
5788:
5789: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5790: any.</p>
5791:
5792: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5793: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5794: elements</a>.</p>
5795:
5796: </dd>
5797:
5798: <dt>A start tag whose tag name is "nobr"</dt>
5799: <dd>
5800:
5801: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5802: any.</p>
5803:
5804: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5805: element in scope">has a <code>nobr</code> element in scope</a>,
5806: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5807: the tag name "nobr" had been seen, then once again
5808: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5809: any.</p>
5810:
5811: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5812: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5813: elements</a>.</p>
5814:
5815: </dd>
5816:
5817: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5818: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5819: "strike", "strong", "tt", "u"</dt>
5820: <dd>
5821:
5822: <p>Follow these steps:</p>
5823:
5824: <ol><li>
5825:
5826: <p>Let the <var title="">formatting element</var> be the
5827: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5828: elements</a> that:</p>
5829:
5830: <ul><li>is between the end of the list and the last scope
5831: marker in the list, if any, or the start of the list
5832: otherwise, and</li>
5833:
5834: <li>has the same tag name as the token.</li>
5835:
5836: </ul><p>If there is no such node, or, if that node is also in the
5837: <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
5838: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5839: steps.</p>
5840:
5841: <p>Otherwise, if there is such a node, but that node is not
5842: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5843: <a href="#parse-error">parse error</a>; remove the element from the list,
5844: and abort these steps.</p>
5845:
5846: <p>Otherwise, there is a <var title="">formatting
5847: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5848: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5849: element in scope">in scope</a>. If the element is not the
5850: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5851: error</a>. In any case, proceed with the algorithm as
5852: written in the following steps.</p>
5853:
5854: </li>
5855:
5856: <li><p>Let the <var title="">furthest block</var> be the
5857: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5858: is lower in the stack than the <var title="">formatting
5859: element</var>, and is not an element in the
5860: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5861: categories. There might not be one.</p></li>
5862:
5863: <li><p>If there is no <var title="">furthest block</var>,
5864: then the UA must skip the subsequent steps and instead just
5865: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5866: elements</a>, from the <a href="#current-node">current node</a> up to and
5867: including the <var title="">formatting element</var>, and
5868: remove the <var title="">formatting element</var> from the
5869: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5870:
5871: <li><p>Let the <var title="">common ancestor</var> be the element
5872: immediately above the <var title="">formatting element</var> in the
5873: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5874:
5875: <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
5876: formatting elements</a> relative to the elements on either
5877: side of it in the list.</p></li>
5878:
5879: <li>
5880:
5881: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5882: <var title="">furthest block</var>. Follow these steps:</p>
5883:
5884: <ol><li>Let <var title="">node</var> be the element immediately
5885: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5886: elements</a>, or if <var title="">node</var> is no longer in
5887: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5888: removed by the next step), the element that was immediately
5889: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5890: elements</a> before <var title="">node</var> was
5891: removed.</li>
1.1 mike 5892:
5893: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5894: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5895: elements</a> and then go back to step 1.</li>
5896:
5897: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5898: in the overall algorithm.</li>
5899:
5900: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5901: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5902: elements</a>.</li>
5903:
5904: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5905: element <var title="">node</var> was created, replace the entry
5906: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5907: formatting elements</a> with an entry for the new element,
5908: replace the entry for <var title="">node</var> in the
5909: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5910: element, and let <var title="">node</var> be the new
5911: element.</li>
5912:
5913: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5914: parent node if any.</li>
5915:
5916: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5917:
5918: <li>Return to step 1 of this inner set of steps.</li>
5919:
5920: </ol></li>
5921:
5922: <li>
5923:
5924: <p>If the <var title="">common ancestor</var> node is a
5925: <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>,
5926: <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,
5927: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5928: node</var> ended up being in the previous step, first removing
5929: it from its previous parent node if any.</p>
5930:
5931: <p>Otherwise, append whatever <var title="">last node</var>
5932: ended up being in the previous step to the <var title="">common
5933: ancestor</var> node, first removing it from its previous parent
5934: node if any.</p>
5935:
5936: </li>
5937:
5938: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5939: <var title="">formatting element</var> was created.</p></li>
5940:
5941: <li><p>Take all of the child nodes of the <var title="">furthest
5942: block</var> and append them to the element created in the last
5943: step.</p></li>
5944:
5945: <li><p>Append that new element to the <var title="">furthest
5946: block</var>.</p></li>
5947:
5948: <li><p>Remove the <var title="">formatting element</var> from the
5949: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5950: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5951: elements</a> at the position of the aforementioned
5952: bookmark.</p></li>
5953:
5954: <li><p>Remove the <var title="">formatting element</var> from the
5955: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5956: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5957: the position of the <var title="">furthest block</var> in that
5958: stack.</p></li>
5959:
5960: <li><p>Jump back to step 1 in this series of steps.</p></li>
5961:
1.334 mike 5962: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5963: to change parents, it has been dubbed the "adoption agency
5964: algorithm" (in contrast with other possible algorithms for dealing
5965: with misnested content, which included the "incest algorithm", the
1.1 mike 5966: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5967:
5968: </dd>
5969:
5970: <dt>A start tag whose tag name is "button"</dt>
5971: <dd>
5972:
5973: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5974: an element in scope">has a <code>button</code> element in
5975: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5976: act as if an end tag with the tag name "button" had been seen,
5977: then reprocess the token.</p>
5978:
5979: <p>Otherwise:</p>
5980:
5981: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5982: any.</p>
5983:
5984: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5985:
5986: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5987: formatting elements</a>.</p>
5988:
5989: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5990:
5991: </dd>
5992:
5993: <dt>A start tag token whose tag name is one of: "applet",
5994: "marquee", "object"</dt>
5995: <dd>
5996:
5997: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5998: any.</p>
5999:
6000: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6001:
6002: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6003: formatting elements</a>.</p>
6004:
6005: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6006:
6007: </dd>
6008:
6009: <dt>An end tag token whose tag name is one of: "applet", "button",
6010: "marquee", "object"</dt>
6011: <dd>
6012:
6013: <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>
6014: with the same tag name as that of the token, then this is a
6015: <a href="#parse-error">parse error</a>; ignore the token.</p>
6016:
6017: <p>Otherwise, run these steps:</p>
6018:
6019: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6020:
6021: <li><p>If the <a href="#current-node">current node</a> is not an element with
6022: the same tag name as that of the token, then this is a
6023: <a href="#parse-error">parse error</a>.</p></li>
6024:
6025: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
6026: until an element with the same tag name as the token has been
6027: popped from the stack.</p></li>
6028:
6029: <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
6030: last marker</a>.</li>
6031:
6032: </ol></dd>
6033:
6034: <dt>A start tag whose tag name is "table"</dt>
6035: <dd>
6036:
6037: <p>If the <code>Document</code> is <em>not</em> set to
6038: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
6039: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
6040: <code>p</code> element in scope</a>, then act as if an end tag
6041: with the tag name "p" had been seen.</p> <!-- i hate myself (this
6042: quirk was basically caused by acid2; if i'd realised we could
6043: change the specs when i wrote acid2, we could have avoided having
6044: any parsing-mode quirks) -Hixie -->
6045:
6046: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6047:
6048: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6049:
6050: <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>
6051:
6052: </dd>
6053:
6054: <dt>A start tag whose tag name is one of: "area", "basefont",
1.589 mike 6055: "bgsound", "br", "embed", "img", "input", "keygen", "wbr"</dt>
1.1 mike 6056: <dd>
6057:
6058: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6059: any.</p>
6060:
6061: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6062: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6063: elements</a>.</p>
6064:
6065: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6066: token's <i>self-closing flag</i></a>, if it is set.</p>
6067:
6068: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
1.589 mike 6069: shouldn't really do it for <area>, <basefont>, and <bgsound> -->
1.1 mike 6070:
6071: </dd>
6072:
6073: <dt>A start tag whose tag name is one of: "param", "source"</dt>
6074: <dd>
6075:
6076: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6077: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6078: elements</a>.</p>
6079:
6080: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6081: token's <i>self-closing flag</i></a>, if it is set.</p>
6082:
6083: </dd>
6084:
6085: <dt>A start tag whose tag name is "hr"</dt>
6086: <dd>
6087:
6088: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6089: an element in scope">has a <code>p</code> element in
6090: scope</a>, then act as if an end tag with the tag name
6091: "p" had been seen.</p>
6092:
6093: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6094: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6095: elements</a>.</p>
6096:
6097: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6098: token's <i>self-closing flag</i></a>, if it is set.</p>
6099:
6100: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6101:
6102: </dd>
6103:
6104: <dt>A start tag whose tag name is "image"</dt>
6105: <dd>
6106: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
6107: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
6108: 2005-12, studies showed that around 0.2% of pages used the
6109: <image> element. -->
6110: </dd>
6111:
6112: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
6113: <dd>
6114:
6115: <p><a href="#parse-error">Parse error</a>.</p>
6116:
6117: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
6118: pointer</a> is not null, then ignore the token.</p>
6119:
6120: <p>Otherwise:</p>
6121:
6122: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6123: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6124: purely to reduce the number of errors (we don't care if they
6125: included the /, they're not supposed to be including the tag at
6126: all! -->
6127:
6128: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6129:
6130: <p>If the token has an attribute called "action", set the
6131: <code title="attr-form-action">action</code> attribute on the
6132: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6133: "action" attribute of the token.</p>
6134:
6135: <p>Act as if a start tag token with the tag name "hr" had been
6136: seen.</p>
6137:
6138: <p>Act as if a start tag token with the tag name "label" had been
6139: seen.</p>
6140:
6141: <p>Act as if a stream of character tokens had been seen (see below
6142: for what they should say).</p>
6143:
6144: <p>Act as if a start tag token with the tag name "input" had been
6145: seen, with all the attributes from the "isindex" token except
6146: "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
6147: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6148:
6149: <p>Act as if a stream of character tokens had been seen (see
6150: below for what they should say).</p>
6151:
6152: <p>Act as if an end tag token with the tag name "label" had been
6153: seen.</p>
6154:
6155: <p>Act as if a start tag token with the tag name "hr" had been
6156: seen.</p>
6157:
6158: <p>Act as if an end tag token with the tag name "form" had been
6159: seen.</p>
6160:
6161: <p>If the token has an attribute with the name "prompt", then the
6162: first stream of characters must be the same string as given in
6163: that attribute, and the second stream of characters must be
6164: empty. Otherwise, the two streams of character tokens together
6165: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6166: equivalent of "This is a searchable index. Insert your search
6167: keywords here: (input field)" in the user's preferred
6168: language.</p>
6169:
6170: </dd>
6171:
6172: <dt>A start tag whose tag name is "textarea"</dt>
6173: <dd>
6174:
6175: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6176: token.</p></li>
6177:
6178: <li><p>If the next token is a U+000A LINE FEED (LF) character
6179: token, then ignore that token and move on to the next
6180: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6181: ignored as an authoring convenience.)</p></li>
6182:
1.671 mike 6183: <li><p>Switch the tokenizer to the <a href="#rcdata-state">RCDATA
1.541 mike 6184: state</a>.</p></li>
1.1 mike 6185:
6186: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6187: current <a href="#insertion-mode">insertion mode</a>.</p>
6188:
6189: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6190: ok".</p></li>
6191:
1.540 mike 6192: <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 6193:
6194: </ol></dd>
6195:
6196: <dt>A start tag whose tag name is "xmp"</dt>
6197: <dd>
6198:
1.233 mike 6199: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6200: an element in scope">has a <code>p</code> element in
6201: scope</a>, then act as if an end tag with the tag name
6202: "p" had been seen.</p>
6203:
1.1 mike 6204: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6205: any.</p>
6206:
6207: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6208:
1.91 mike 6209: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6210:
6211: </dd>
6212:
6213: <dt>A start tag whose tag name is "iframe"</dt>
6214: <dd>
6215:
6216: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6217:
1.91 mike 6218: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6219:
6220: </dd>
6221:
6222: <dt>A start tag whose tag name is "noembed"</dt>
6223: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6224: <dd>
6225:
1.91 mike 6226: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6227:
6228: </dd>
6229:
6230: <dt>A start tag whose tag name is "select"</dt>
6231: <dd>
6232:
6233: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6234: any.</p>
6235:
6236: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6237:
6238: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6239:
6240: <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>",
6241: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6242: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6243: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6244: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6245: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6246: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6247: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6248:
6249: </dd>
6250:
6251: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6252: <dd>
6253:
6254: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6255: element in scope">has an <code>option</code> element in
6256: scope</a>, then act as if an end tag with the tag name "option"
6257: had been seen.</p>
6258:
6259: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6260: any.</p>
6261:
6262: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6263:
6264: </dd>
6265:
6266: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6267: <dd>
6268:
6269: <!-- the parsing rules for ruby really don't match IE much at all,
6270: but in practice the markup used is very simple and so strict
6271: compatibility with IE isn't required. For example, as defined
6272: here we get very, very different behaviour than IE for
6273: pathological cases like:
6274:
6275: <ruby><ol><li><p>a<rt>b
6276: <ruby>a<rt>b<p>c
6277:
6278: But in practice most ruby markup falls into these cases:
6279:
6280: <ruby>a<rt>b</ruby>
6281: <ruby>a<rp>b<rt>c<rp>d</ruby>
6282: <ruby>a<rt>b</rt></ruby>
6283: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6284:
6285: -->
6286:
6287: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6288: element in scope">has a <code>ruby</code> element in scope</a>,
6289: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6290: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6291: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6292: node</a> up to the node immediately before the bottommost
6293: <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
6294: elements</a>.</p>
6295:
6296: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6297:
6298: </dd>
6299:
6300: <dt>An end tag whose tag name is "br"</dt>
6301: <dd>
6302: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6303: the tag name "br" had been seen. Ignore the end tag token.</p>
6304: </dd>
6305:
6306: <dt>A start tag whose tag name is "math"</dt>
6307: <dd>
6308:
6309: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6310: any.</p>
6311:
6312: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6313: fixes the case of MathML attributes that are not all
6314: lowercase.)</p>
6315:
6316: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6317: fixes the use of namespaced attributes, in particular XLink.)</p>
6318:
6319: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6320: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</p>
1.1 mike 6321:
6322: <!-- If we ever change the frameset-ok flag to an insertion mode,
6323: the following change would be implied, except we'd have to do it
6324: even in the face of a self-closed tag:
6325: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6326: -->
6327:
6328: <p>If the token has its <i>self-closing flag</i> set, pop the
6329: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6330: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6331: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6332:
6333: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6334: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6335: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6336: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6337: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6338: foreign content">in foreign content</a>".</p>
6339:
6340: </dd>
6341:
6342: <dt>A start tag whose tag name is "svg"</dt>
6343: <dd>
6344:
6345: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6346: any.</p>
6347:
6348: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6349: the case of SVG attributes that are not all lowercase.)</p>
6350:
6351: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6352: fixes the use of namespaced attributes, in particular XLink in
6353: SVG.)</p>
6354:
6355: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6356: <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</p>
1.1 mike 6357:
6358: <!-- If we ever change the frameset-ok flag to an insertion mode,
6359: the following change would be implied, except we'd have to do it
6360: even in the face of a self-closed tag:
6361: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6362: -->
6363:
6364: <p>If the token has its <i>self-closing flag</i> set, pop the
6365: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6366: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6367: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6368:
6369: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6370: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6371: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6372: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6373: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6374: foreign content">in foreign content</a>".</p>
6375:
6376: </dd>
6377:
6378: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6379: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6380: "thead", "tr"</dt>
6381: <!--<dt>An end tag whose tag name is one of: "area", "base",
6382: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6383: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
1.589 mike 6384: "noframes", "param", "script", "select", "source", "style",
6385: "table", "textarea", "title", "wbr"</dt>-->
1.1 mike 6386: <!--<dt>An end tag whose tag name is "noscript", if the
6387: <span>scripting flag</span> is enabled</dt>-->
6388: <dd>
6389: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6390: <!-- end tags are commented out because since they can never end
6391: up on the stack anyway, the default end tag clause will
6392: automatically handle them. we don't want to have text in the spec
6393: that is just an optimisation, as that detracts from the spec
6394: itself -->
6395: </dd>
6396:
6397: <dt>Any other start tag</dt>
6398: <dd>
6399:
6400: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6401: any.</p>
6402:
6403: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6404:
6405: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6406: element.</p>
6407:
6408: </dd>
6409:
6410: <dt>Any other end tag</dt>
6411: <dd>
6412:
6413: <p>Run the following steps:</p>
6414:
6415: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6416: node</a> (the bottommost node of the stack).</p></li>
6417:
6418: <li><p>If <var title="">node</var> has the same tag name as
6419: the end tag token, then:</p>
6420:
6421: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6422:
6423: <li><p>If the tag name of the end tag token does not match
6424: the tag name of the <a href="#current-node">current node</a>, this is a
6425: <a href="#parse-error">parse error</a>.</p></li>
6426:
6427: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6428: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6429:
6430: </ol></li>
6431:
6432: <li><p>Otherwise, if <var title="">node</var> is in neither the
6433: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6434: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6435: token, and abort these steps.</p></li>
6436:
6437: <li><p>Set <var title="">node</var> to the previous entry in the
6438: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6439:
6440: <li><p>Return to step 2.</p></li>
6441:
6442: </ol></dd>
6443:
1.724 mike 6444: </dl><h5 id="parsing-main-incdata"><span class="secno">7.2.5.11 </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 6445:
6446: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6447: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6448:
6449: <dl class="switch"><dt>A character token</dt>
6450: <dd>
6451:
6452: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6453: character</a> into the <a href="#current-node">current node</a>.</p>
6454:
6455: </dd>
6456:
6457: <dt>An end-of-file token</dt>
6458: <dd>
6459:
6460: <!-- can't be the fragment case -->
6461: <p><a href="#parse-error">Parse error</a>.</p>
6462:
6463: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6464: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6465: started"</a>.</p>
1.1 mike 6466:
6467: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6468: elements</a>.</p>
6469:
6470: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6471: insertion mode</a> and reprocess the current token.</p>
6472:
6473: </dd>
6474:
6475: <dt>An end tag whose tag name is "script"</dt>
6476: <dd>
6477:
6478: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6479: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6480:
6481: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6482: elements</a>.</p>
6483:
6484: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6485: insertion mode</a>.</p>
6486:
6487: <p>Let the <var title="">old insertion point</var> have the
6488: same value as the current <a href="#insertion-point">insertion point</a>. Let
6489: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6490: input character</a>.</p>
6491:
6492: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6493: one.</p>
6494:
6495: <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 6496: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6497: to be inserted into the tokenizer</a>, and might cause the
6498: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6499:
6500: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6501: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6502: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6503:
6504: <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
6505: <a href="#insertion-point">insertion point</a> to its previous value. This value
6506: might be the "undefined" value.)</p>
6507:
6508: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6509: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6510:
6511: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6512:
6513: <dd>
6514:
6515: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6516: processing of any nested invocations of the tokenizer, yielding
6517: control back to the caller. (Tokenization will resume when the
6518: caller returns to the "outer" tree construction stage.)</p>
6519:
6520: <p class="note">The tree construction stage of this particular
6521: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6522: 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 6523:
6524: </dd>
6525:
6526:
6527: <dt>Otherwise:</dt>
6528:
6529: <dd>
6530:
6531: <p>Follow these steps:</p>
6532:
1.484 mike 6533: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6534: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6535: parsing-blocking script</a>.</p></li>
6536:
6537: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6538: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6539: the <a href="browsers.html#event-loop">event loop</a> will not run <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a>.</p></li>
6540:
6541: <li><p><a href="browsers.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
6542: scripts</a> and <var title="">the script</var>'s
6543: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6544:
6545: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6546: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6547: <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
6548: run.</p></li>
1.1 mike 6549:
6550: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6551: <a href="#next-input-character">next input character</a>.</p></li>
6552:
6553: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6554: by one (it should be zero before this step, so this sets it to
6555: one).</p></li>
6556:
1.484 mike 6557: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6558: <var title="">the script</var>.</p></li>
1.1 mike 6559:
6560: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6561: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6562: zero (which it always should be at this point), then set the
6563: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6564:
6565: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6566: again.</p></li>
6567:
1.484 mike 6568: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6569: script</a>, then repeat these steps from step 1.</p></li>
6570:
6571: </ol></dd>
6572:
6573: </dl></dd>
6574:
6575: <dt>Any other end tag</dt>
6576: <dd>
6577:
6578: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6579: elements</a>.</p>
6580:
6581: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6582: insertion mode</a>.</p>
6583:
6584: </dd>
6585:
1.724 mike 6586: </dl><h5 id="parsing-main-intable"><span class="secno">7.2.5.12 </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 6587:
6588: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6589: mode: in table">in table</a>", tokens must be handled as follows:</p>
6590:
6591: <dl class="switch"><dt>A character token</dt>
6592: <dd>
6593:
6594: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6595: be an empty list of tokens.</p>
6596:
6597: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6598: <a href="#insertion-mode">insertion mode</a>.</p>
6599:
6600: <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
6601: reprocess the token.</p>
6602:
6603: </dd>
6604:
6605: <dt>A comment token</dt>
6606: <dd>
6607: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6608: node</a> with the <code title="">data</code> attribute set to
6609: the data given in the comment token.</p>
6610: </dd>
6611:
6612: <dt>A DOCTYPE token</dt>
6613: <dd>
6614: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6615: </dd>
6616:
6617: <dt>A start tag whose tag name is "caption"</dt>
6618: <dd>
6619:
6620: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6621: below.)</p>
6622:
6623: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6624: formatting elements</a>.</p>
6625:
6626: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6627: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6628:
6629: </dd>
6630:
6631: <dt>A start tag whose tag name is "colgroup"</dt>
6632: <dd>
6633:
6634: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6635: below.)</p>
6636:
6637: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6638: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6639: group</a>".</p>
6640:
6641: </dd>
6642:
6643: <dt>A start tag whose tag name is "col"</dt>
6644: <dd>
6645: <p>Act as if a start tag token with the tag name "colgroup"
6646: had been seen, then reprocess the current token.</p>
6647: </dd>
6648:
6649: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6650: <dd>
6651:
6652: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6653: below.)</p>
6654:
6655: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6656: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6657: body</a>".</p>
6658:
6659: </dd>
6660:
6661: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6662: <dd>
6663: <p>Act as if a start tag token with the tag name "tbody" had
6664: been seen, then reprocess the current token.</p>
6665: </dd>
6666:
6667: <dt>A start tag whose tag name is "table"</dt>
6668: <dd>
6669:
6670: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6671: the tag name "table" had been seen, then, if that token wasn't
6672: ignored, reprocess the current token.</p>
6673:
6674: <p class="note">The fake end tag token here can only be
6675: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6676:
6677: </dd>
6678:
6679: <dt>An end tag whose tag name is "table"</dt>
6680: <dd>
6681:
6682: <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
6683: scope</a> with the same tag name as the token, this is a
6684: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6685: case</a>)</p>
6686:
6687: <p>Otherwise:</p>
6688:
6689: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6690: element has been popped from the stack.</p>
6691:
6692: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6693:
6694: </dd>
6695:
6696: <dt>An end tag whose tag name is one of: "body", "caption",
6697: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6698: "thead", "tr"</dt>
6699: <dd>
6700: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6701: </dd>
6702:
6703: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6704: <dd>
6705:
6706: <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
6707: mode</a>.</p>
6708:
6709: </dd>
6710:
6711: <dt>A start tag whose tag name is "input"</dt>
6712: <dd>
6713:
6714: <p>If the token does not have an attribute with the name "type",
6715: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6716: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6717: else" entry below.</p>
6718:
6719: <p>Otherwise:</p>
6720:
6721: <p><a href="#parse-error">Parse error</a>.</p>
6722:
6723: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6724:
6725: <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
6726: open elements</a>.</p>
6727:
6728: </dd>
6729:
1.603 mike 6730: <dt>A start tag whose tag name is "form"</dt>
6731: <dd>
6732:
6733: <p><a href="#parse-error">Parse error</a>.</p>
6734:
1.717 mike 6735: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
6736: pointer</a> is not null, ignore the token.</p>
6737:
6738: <p>Otherwise:</p>
6739:
1.603 mike 6740: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6741:
1.637 mike 6742: <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 6743: open elements</a>.</p>
6744:
6745: </dd>
6746:
1.721 mike 6747: <!-- "form" end tag falls through to in-body, which does the right thing -->
1.717 mike 6748:
1.1 mike 6749: <dt>An end-of-file token</dt>
6750: <dd>
6751:
6752: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6753: <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 6754: error</a>.</p>
6755:
6756: <p class="note">It can only be the <a href="#current-node">current node</a> in
6757: the <a href="#fragment-case">fragment case</a>.</p>
6758:
6759: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6760:
6761: </dd>
6762:
6763: <dt>Anything else</dt>
6764: <dd>
6765:
6766: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6767: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6768: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6769: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6770: <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
6771: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6772: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6773:
6774: </dd>
6775:
6776: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6777: back to a table context</dfn>, it means that the UA must, while
6778: 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 6779: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6780: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6781:
6782: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6783: <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 6784: case</a>.</p>
6785:
6786:
6787:
1.724 mike 6788: <h5 id="parsing-main-intabletext"><span class="secno">7.2.5.13 </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 6789:
6790: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6791: mode: in table text">in table text</a>", tokens must be handled
6792: as follows:</p>
6793:
6794: <dl class="switch"><dt>A character token</dt>
6795: <dd>
6796:
6797: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6798: tokens</a></var> list.</p>
6799:
6800: </dd>
6801:
6802:
6803: <dt>Anything else</dt>
6804: <dd>
6805:
6806: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6807: tokens</a></var> list are character tokens that are not one of U+0009
6808: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6809: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6810: reprocess those character tokens using the rules given in the
6811: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6812: table">in table</a>" insertion mode.</p>
6813:
6814: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6815: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6816: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6817:
6818: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6819: insertion mode</a> and reprocess the token.</p>
6820:
6821: </dd>
6822:
1.724 mike 6823: </dl><h5 id="parsing-main-incaption"><span class="secno">7.2.5.14 </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 6824:
6825: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6826: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6827:
6828: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6829: <dd>
6830:
6831: <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
6832: scope</a> with the same tag name as the token, this is a
6833: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6834: case</a>)</p>
6835:
6836: <p>Otherwise:</p>
6837:
6838: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6839:
6840: <p>Now, if the <a href="#current-node">current node</a> is not a
6841: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6842: error</a>.</p>
6843:
6844: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6845: element has been popped from the stack.</p>
6846:
6847: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6848: the last marker</a>.</p>
6849:
6850: <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>
6851:
6852: </dd>
6853:
6854: <dt>A start tag whose tag name is one of: "caption", "col",
6855: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6856: <dt>An end tag whose tag name is "table"</dt>
6857: <dd>
6858:
6859: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6860: name "caption" had been seen, then, if that token wasn't
6861: ignored, reprocess the current token.</p>
6862:
6863: <p class="note">The fake end tag token here can only be
6864: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6865:
6866: </dd>
6867:
6868: <dt>An end tag whose tag name is one of: "body", "col",
6869: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6870: "tr"</dt>
6871: <dd>
6872: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6873: </dd>
6874:
6875: <dt>Anything else</dt>
6876: <dd>
6877: <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
6878: mode</a>.</p>
6879: </dd>
6880:
1.724 mike 6881: </dl><h5 id="parsing-main-incolgroup"><span class="secno">7.2.5.15 </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 6882:
6883: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6884: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6885:
6886: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6887: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6888: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6889: <dd>
6890: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6891: the <a href="#current-node">current node</a>.</p>
6892: </dd>
6893:
6894: <dt>A comment token</dt>
6895: <dd>
6896: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6897: node</a> with the <code title="">data</code> attribute set to
6898: the data given in the comment token.</p>
6899: </dd>
6900:
6901: <dt>A DOCTYPE token</dt>
6902: <dd>
6903: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6904: </dd>
6905:
6906: <dt>A start tag whose tag name is "html"</dt>
6907: <dd>
6908: <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
6909: mode</a>.</p>
6910: </dd>
6911:
6912: <dt>A start tag whose tag name is "col"</dt>
6913: <dd>
6914:
6915: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6916: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6917: elements</a>.</p>
6918:
6919: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6920: token's <i>self-closing flag</i></a>, if it is set.</p>
6921:
6922: </dd>
6923:
6924: <dt>An end tag whose tag name is "colgroup"</dt>
6925: <dd>
6926:
6927: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6928: <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 6929: error</a>; ignore the token. (<a href="#fragment-case">fragment
6930: case</a>)</p>
6931:
6932: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6933: 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
6934: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6935: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6936:
6937: </dd>
6938:
6939: <dt>An end tag whose tag name is "col"</dt>
6940: <dd>
6941: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6942: </dd>
6943:
6944: <dt>An end-of-file token</dt>
6945: <dd>
6946:
1.159 mike 6947: <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 6948: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6949: case</a>)</p>
6950:
6951: <p>Otherwise, act as described in the "anything else" entry
6952: below.</p>
6953:
6954: </dd>
6955:
6956: <dt>Anything else</dt>
6957: <dd>
6958:
6959: <p>Act as if an end tag with the tag name "colgroup" had been
6960: seen, and then, if that token wasn't ignored, reprocess the
6961: current token.</p>
6962:
6963: <p class="note">The fake end tag token here can only be
6964: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6965:
6966: </dd>
6967:
1.724 mike 6968: </dl><h5 id="parsing-main-intbody"><span class="secno">7.2.5.16 </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 6969:
6970: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6971: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6972:
6973: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6974: <dd>
6975:
6976: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6977: context</a>. (See below.)</p>
6978:
6979: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6980: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6981: in row">in row</a>".</p>
6982:
6983: </dd>
6984:
6985: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6986: <dd>
6987: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6988: the tag name "tr" had been seen, then reprocess the current
6989: token.</p>
6990: </dd>
6991:
6992: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6993: "thead"</dt>
6994: <dd>
6995:
6996: <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
6997: scope</a> with the same tag name as the token, this is a
6998: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6999:
7000: <p>Otherwise:</p>
7001:
7002: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7003: context</a>. (See below.)</p>
7004:
7005: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
7006: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7007: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
7008:
7009: </dd>
7010:
7011: <dt>A start tag whose tag name is one of: "caption", "col",
7012: "colgroup", "tbody", "tfoot", "thead"</dt>
7013: <dt>An end tag whose tag name is "table"</dt>
7014: <dd>
7015:
7016: <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
7017: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
7018: element in table scope</a>, this is a <a href="#parse-error">parse
7019: error</a>. Ignore the token. (<a href="#fragment-case">fragment
7020: case</a>)</p>
7021:
7022: <p>Otherwise:</p>
7023:
7024: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7025: context</a>. (See below.)</p>
7026:
7027: <p>Act as if an end tag with the same tag name as the
7028: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
7029: been seen, then reprocess the current token.</p>
7030:
7031: </dd>
7032:
7033: <dt>An end tag whose tag name is one of: "body", "caption",
7034: "col", "colgroup", "html", "td", "th", "tr"</dt>
7035: <dd>
7036: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7037: </dd>
7038:
7039: <dt>Anything else</dt>
7040: <dd>
7041: <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
7042: mode</a>.</p>
7043: </dd>
7044:
7045: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
7046: back to a table body context</dfn>, it means that the UA must,
7047: 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 7048: <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 7049: element, pop elements from the <a href="#stack-of-open-elements">stack of open
7050: elements</a>.</p>
7051:
7052: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7053: <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 7054: case</a>.</p>
7055:
7056:
1.724 mike 7057: <h5 id="parsing-main-intr"><span class="secno">7.2.5.17 </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 7058:
7059: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
7060: mode: in row">in row</a>", tokens must be handled as follows:</p>
7061:
7062: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
7063: <dd>
7064:
7065: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7066: context</a>. (See below.)</p>
7067:
7068: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
7069: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
7070: in cell">in cell</a>".</p>
7071:
7072: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
7073: formatting elements</a>.</p>
7074:
7075: </dd>
7076:
7077: <dt>An end tag whose tag name is "tr"</dt>
7078: <dd>
7079:
7080: <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
7081: scope</a> with the same tag name as the token, this is a
7082: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7083: case</a>)</p>
7084:
7085: <p>Otherwise:</p>
7086:
7087: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7088: context</a>. (See below.)</p>
7089:
7090: <p>Pop the <a href="#current-node">current node</a> (which will be a
7091: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
7092: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
7093: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
7094: body</a>".</p>
7095:
7096: </dd>
7097:
7098: <dt>A start tag whose tag name is one of: "caption", "col",
7099: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
7100: <dt>An end tag whose tag name is "table"</dt>
7101: <dd>
7102:
7103: <p>Act as if an end tag with the tag name "tr" had been seen,
7104: then, if that token wasn't ignored, reprocess the current
7105: token.</p>
7106:
7107: <p class="note">The fake end tag token here can only be
7108: ignored in the <a href="#fragment-case">fragment case</a>.</p>
7109:
7110: </dd>
7111:
7112: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
7113: "thead"</dt>
7114: <dd>
7115:
7116: <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
7117: scope</a> with the same tag name as the token, this is a
7118: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7119:
7120: <p>Otherwise, act as if an end tag with the tag name "tr" had
7121: been seen, then reprocess the current token.</p>
7122:
7123: </dd>
7124:
7125: <dt>An end tag whose tag name is one of: "body", "caption",
7126: "col", "colgroup", "html", "td", "th"</dt>
7127: <dd>
7128: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7129: </dd>
7130:
7131: <dt>Anything else</dt>
7132: <dd>
7133: <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
7134: mode</a>.</p>
7135: </dd>
7136:
7137: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
7138: back to a table row context</dfn>, it means that the UA must,
7139: 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 7140: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 7141: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7142:
7143: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7144: <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 7145: case</a>.</p>
7146:
7147:
1.724 mike 7148: <h5 id="parsing-main-intd"><span class="secno">7.2.5.18 </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 7149:
7150: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7151: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7152:
7153: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7154: <dd>
7155:
7156: <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
7157: scope</a> with the same tag name as that of the token, then
7158: this is a <a href="#parse-error">parse error</a> and the token must be
7159: ignored.</p>
7160:
7161: <p>Otherwise:</p>
7162:
7163: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7164:
7165: <p>Now, if the <a href="#current-node">current node</a> is not an element
7166: with the same tag name as the token, then this is a
7167: <a href="#parse-error">parse error</a>.</p>
7168:
7169: <p>Pop elements from this stack until an element with the same
7170: tag name as the token has been popped from the stack.</p>
7171:
7172: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7173: the last marker</a>.</p>
7174:
7175: <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
7176: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7177: this point.)</p>
7178:
7179: </dd>
7180:
7181: <dt>A start tag whose tag name is one of: "caption", "col",
7182: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7183: <dd>
7184:
7185: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7186: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7187: a <code>td</code> or <code>th</code> element in table
7188: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7189: the token. (<a href="#fragment-case">fragment case</a>)</p>
7190:
7191: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7192: reprocess the current token.</p>
7193:
7194: </dd>
7195:
7196: <dt>An end tag whose tag name is one of: "body", "caption",
7197: "col", "colgroup", "html"</dt>
7198: <dd>
7199: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7200: </dd>
7201:
7202: <dt>An end tag whose tag name is one of: "table", "tbody",
7203: "tfoot", "thead", "tr"</dt>
7204: <dd>
7205:
7206: <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
7207: scope</a> with the same tag name as that of the token
7208: (which can only happen for "tbody", "tfoot" and "thead", or,
7209: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7210: error</a> and the token must be ignored.</p>
7211:
7212: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7213: reprocess the current token.</p>
7214:
7215: </dd>
7216:
7217: <dt>Anything else</dt>
7218: <dd>
7219: <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
7220: mode</a>.</p>
7221: </dd>
7222:
7223: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7224: mean to run the following algorithm:</p>
7225:
7226: <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>
7227: element in table scope</a>, then act as if an end tag token
7228: with the tag name "td" had been seen.</p></li>
7229:
7230: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7231: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7232: <code>th</code> element in table scope</a>; act as if an end
7233: tag token with the tag name "th" had been seen.</p></li>
7234:
7235: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7236: 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
7237: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7238: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7239: cell</a>".</p>
7240:
7241:
1.724 mike 7242: <h5 id="parsing-main-inselect"><span class="secno">7.2.5.19 </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 7243:
7244: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7245: mode: in select">in select</a>", tokens must be handled as follows:</p>
7246:
7247: <dl class="switch"><dt>A character token</dt>
7248: <dd>
7249: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7250: character</a> into the <a href="#current-node">current node</a>.</p>
7251: </dd>
7252:
7253: <dt>A comment token</dt>
7254: <dd>
7255: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7256: node</a> with the <code title="">data</code> attribute set to
7257: the data given in the comment token.</p>
7258: </dd>
7259:
7260: <dt>A DOCTYPE token</dt>
7261: <dd>
7262: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7263: </dd>
7264:
7265: <dt>A start tag whose tag name is "html"</dt>
7266: <dd>
7267: <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
7268: mode</a>.</p>
7269: </dd>
7270:
7271: <dt>A start tag whose tag name is "option"</dt>
7272: <dd>
7273:
7274: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7275: element, act as if an end tag with the tag name "option" had
7276: been seen.</p>
7277:
7278: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7279:
7280: </dd>
7281:
7282: <dt>A start tag whose tag name is "optgroup"</dt>
7283: <dd>
7284:
7285: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7286: element, act as if an end tag with the tag name "option" had
7287: been seen.</p>
7288:
7289: <p>If the <a href="#current-node">current node</a> is an
7290: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7291: tag name "optgroup" had been seen.</p>
7292:
7293: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7294:
7295: </dd>
7296:
7297: <dt>An end tag whose tag name is "optgroup"</dt>
7298: <dd>
7299:
7300: <p>First, if the <a href="#current-node">current node</a> is an
7301: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7302: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7303: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7304: the tag name "option" had been seen.</p>
7305:
7306: <p>If the <a href="#current-node">current node</a> is an
7307: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7308: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7309: <a href="#parse-error">parse error</a>; ignore the token.</p>
7310:
7311: </dd>
7312:
7313: <dt>An end tag whose tag name is "option"</dt>
7314: <dd>
7315:
7316: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7317: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7318: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7319: error</a>; ignore the token.</p>
7320:
7321: </dd>
7322:
7323: <dt>An end tag whose tag name is "select"</dt>
7324: <dd>
7325:
7326: <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
7327: scope</a> with the same tag name as the token, this is a
7328: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7329: case</a>)</p>
7330:
7331: <p>Otherwise:</p>
7332:
7333: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7334: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7335: stack.</p>
7336:
7337: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7338:
7339: </dd>
7340:
7341: <dt>A start tag whose tag name is "select"</dt>
7342: <dd>
7343:
7344: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7345: an end tag with the tag name "select" instead.</p>
7346:
7347: </dd>
7348:
7349: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7350: <dd>
1.73 mike 7351:
7352: <p><a href="#parse-error">Parse error</a>.</p>
7353:
1.124 mike 7354: <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>
7355: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7356: case</a>)</p>
1.73 mike 7357:
7358: <p>Otherwise, act as if an end tag with the tag name "select" had
7359: been seen, and reprocess the token.</p>
7360:
1.1 mike 7361: </dd>
7362:
7363: <dt>A start tag token whose tag name is "script"</dt>
7364: <dd>
7365: <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
7366: mode</a>.</p>
7367: </dd>
7368:
7369: <dt>An end-of-file token</dt>
7370: <dd>
7371:
7372: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7373: <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 7374: error</a>.</p>
7375:
7376: <p class="note">It can only be the <a href="#current-node">current node</a> in
7377: the <a href="#fragment-case">fragment case</a>.</p>
7378:
7379: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7380:
7381: </dd>
7382:
7383: <dt>Anything else</dt>
7384: <dd>
7385: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7386: </dd>
7387:
1.724 mike 7388: </dl><h5 id="parsing-main-inselectintable"><span class="secno">7.2.5.20 </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 7389:
7390: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7391: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7392:
7393: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7394: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7395: <dd>
7396: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7397: name "select" had been seen, and reprocess the token.</p>
7398: </dd>
7399:
7400: <dt>An end tag whose tag name is one of: "caption", "table",
7401: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7402: <dd>
7403:
7404: <p><a href="#parse-error">Parse error</a>.</p>
7405:
7406: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7407: element in table scope</a> with the same tag name as that
7408: of the token, then act as if an end tag with the tag name
7409: "select" had been seen, and reprocess the token. Otherwise,
7410: ignore the token.</p>
7411:
7412: </dd>
7413:
7414: <dt>Anything else</dt>
7415: <dd>
7416: <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
7417: mode</a>.</p>
7418: </dd>
7419:
1.724 mike 7420: </dl><h5 id="parsing-main-inforeign"><span class="secno">7.2.5.21 </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 7421:
7422: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7423: mode: in foreign content">in foreign content</a>", tokens must be
7424: handled as follows:</p>
7425:
7426: <dl class="switch"><dt>A character token</dt>
7427: <dd>
7428:
7429: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7430: character</a> into the <a href="#current-node">current node</a>.</p>
7431:
7432: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7433: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7434: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7435: flag</a> to "not ok".</p>
7436:
7437: </dd>
7438:
7439: <dt>A comment token</dt>
7440: <dd>
7441: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7442: node</a> with the <code title="">data</code> attribute set to
7443: the data given in the comment token.</p>
7444: </dd>
7445:
7446: <dt>A DOCTYPE token</dt>
7447: <dd>
7448: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7449: </dd>
7450:
1.724 mike 7451: <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 7452: <dd>
7453:
7454: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7455: elements</a>.</p>
7456:
7457: <p>Let the <var title="">old insertion point</var> have the
7458: same value as the current <a href="#insertion-point">insertion point</a>. Let
7459: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7460: input character</a>.</p>
7461:
7462: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7463: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7464:
7465: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7466: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7467: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7468:
1.159 mike 7469: <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 7470: tokenizer</a>, the parser will not be executed reentrantly,
7471: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7472:
7473: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7474: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7475: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7476:
7477: <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
7478: <a href="#insertion-point">insertion point</a> to its previous value. This value
7479: might be the "undefined" value.)</p>
7480:
7481: </dd>
7482:
1.724 mike 7483: <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>
7484: <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>
7485: <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>
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="">ms</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="">mtext</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7488: <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>
7489: <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>
7490: <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>
7491: <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>
7492: <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 7493: <dt>An end tag</dt>
7494: <dd>
7495:
7496: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7497: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7498:
7499: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7500: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7501: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7502: element in scope">in scope</a> that has a namespace other than
1.724 mike 7503: the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7504: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7505:
7506: </dd>
7507:
7508: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7509: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7510: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7511: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7512: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7513: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7514: "li", "listing"<!-- so that pre and listing can be handled
7515: uniformly throughout the parser -->, "menu", "meta", "nobr",
7516: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7517: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7518: "span", "strong", "strike"<!-- so that s and strike can be handled
7519: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7520: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7521: list was determined empirically by studying over 6,000,000,000
1.422 mike 7522: pages that were specifically not XML pages -->
7523: <dt>A start tag whose tag name is "font", if the token has any
7524: attributes named "color", "face", or "size"</dt> <!-- the
7525: attributes here are required so that SVG <font> will go through as
7526: SVG but legacy <font>s won't -->
7527: <dt>An end-of-file token</dt> <dd>
1.1 mike 7528:
7529: <p><a href="#parse-error">Parse error</a>.</p>
7530:
7531: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
1.724 mike 7532: the <a href="#current-node">current node</a> is in the <a href="infrastructure.html#html-namespace-0">HTML
1.1 mike 7533: namespace</a>.</p>
7534:
7535: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7536: insertion mode</a>, and reprocess the token.</p>
7537:
7538: </dd>
7539:
7540: <dt>Any other start tag</dt>
7541: <dd>
7542:
7543: <p>If the <a href="#current-node">current node</a> is an element in the
1.724 mike 7544: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
1.1 mike 7545: attributes</a> for the token. (This fixes the case of MathML
7546: attributes that are not all lowercase.)</p>
7547:
1.724 mike 7548: <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 7549: namespace</a>, and the token's tag name is one of the ones in
7550: the first column of the following table, change the tag name to
7551: the name given in the corresponding cell in the second
7552: column. (This fixes the case of SVG elements that are not all
7553: lowercase.)</p>
7554:
7555: <table><thead><tr><th> Tag name </th><th> Element name
7556: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7557: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7558: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7559: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7560: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7561: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7562: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7563: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7564: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7565: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7566: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7567: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7568: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7569: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7570: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7571: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7572: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7573: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7574: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7575: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7576: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7577: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7578: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7579: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7580: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7581: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7582: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7583: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7584: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7585: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7586: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7587: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7588: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7589: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7590: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7591: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7592: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
1.724 mike 7593: </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 7594: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7595: token. (This fixes the case of SVG attributes that are not all
7596: lowercase.)</p>
7597:
7598: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7599: fixes the use of namespaced attributes, in particular XLink in
7600: SVG.)</p>
7601:
7602: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7603: same namespace as the <a href="#current-node">current node</a>.</p>
7604:
7605: <p>If the token has its <i>self-closing flag</i> set, pop the
7606: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7607: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7608: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7609:
7610: </dd>
7611:
1.724 mike 7612: </dl><h5 id="parsing-main-afterbody"><span class="secno">7.2.5.22 </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 7613:
7614: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7615: mode: after body">after body</a>", tokens must be handled as follows:</p>
7616:
7617: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7618: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7619: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7620: <dd>
7621: <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
7622: mode</a>.</p>
7623: </dd>
7624:
7625: <dt>A comment token</dt>
7626: <dd>
7627: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7628: 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 7629: element), with the <code title="">data</code> attribute set to
7630: the data given in the comment token.</p>
7631: </dd>
7632:
7633: <dt>A DOCTYPE token</dt>
7634: <dd>
7635: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7636: </dd>
7637:
7638: <dt>A start tag whose tag name is "html"</dt>
7639: <dd>
7640: <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
7641: mode</a>.</p>
7642: </dd>
7643:
7644: <dt>An end tag whose tag name is "html"</dt>
7645: <dd>
7646:
7647: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7648: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7649: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7650:
7651: <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
7652: body</a>".</p>
7653:
7654: </dd>
7655:
7656: <dt>An end-of-file token</dt>
7657: <dd>
7658: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7659: </dd>
7660:
7661: <dt>Anything else</dt>
7662: <dd>
7663:
7664: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7665: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7666: body</a>" and reprocess the token.</p>
7667:
7668: </dd>
7669:
1.724 mike 7670: </dl><h5 id="parsing-main-inframeset"><span class="secno">7.2.5.23 </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 7671:
7672: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7673: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7674:
7675: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7676: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7677: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7678: <dd>
7679: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7680: the <a href="#current-node">current node</a>.</p>
7681: </dd>
7682:
7683: <dt>A comment token</dt>
7684: <dd>
7685: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7686: node</a> with the <code title="">data</code> attribute set to
7687: the data given in the comment token.</p>
7688: </dd>
7689:
7690: <dt>A DOCTYPE token</dt>
7691: <dd>
7692: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7693: </dd>
7694:
7695: <dt>A start tag whose tag name is "html"</dt>
7696: <dd>
7697: <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
7698: mode</a>.</p>
7699: </dd>
7700:
7701: <dt>A start tag whose tag name is "frameset"</dt>
7702: <dd>
7703: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7704: </dd>
7705:
7706: <dt>An end tag whose tag name is "frameset"</dt>
7707: <dd>
7708:
7709: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7710: <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 7711: error</a>; ignore the token. (<a href="#fragment-case">fragment
7712: case</a>)</p>
7713:
7714: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7715: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7716:
7717: <p>If the parser was <em>not</em> originally created as part
7718: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7719: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7720: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7721: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7722: frameset</a>".</p>
7723:
7724: </dd>
7725:
7726: <dt>A start tag whose tag name is "frame"</dt>
7727: <dd>
7728:
7729: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7730: Immediately pop the <a href="#current-node">current node</a> off the
7731: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7732:
7733: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7734: token's <i>self-closing flag</i></a>, if it is set.</p>
7735:
7736: </dd>
7737:
7738: <dt>A start tag whose tag name is "noframes"</dt>
7739: <dd>
7740: <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
7741: mode</a>.</p>
7742: </dd>
7743:
7744: <dt>An end-of-file token</dt>
7745: <dd>
7746:
7747: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7748: <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 7749: error</a>.</p>
7750:
7751: <p class="note">It can only be the <a href="#current-node">current node</a> in
7752: the <a href="#fragment-case">fragment case</a>.</p>
7753:
7754: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7755:
7756: </dd>
7757:
7758: <dt>Anything else</dt>
7759: <dd>
7760: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7761: </dd>
7762:
1.724 mike 7763: </dl><h5 id="parsing-main-afterframeset"><span class="secno">7.2.5.24 </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 7764:
7765: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7766: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7767:
7768: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7769: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7770: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7771: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7772: <dd>
7773: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7774: the <a href="#current-node">current node</a>.</p>
7775: </dd>
7776:
7777: <dt>A comment token</dt>
7778: <dd>
7779: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7780: node</a> with the <code title="">data</code> attribute set to
7781: the data given in the comment token.</p>
7782: </dd>
7783:
7784: <dt>A DOCTYPE token</dt>
7785: <dd>
7786: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7787: </dd>
7788:
7789: <dt>A start tag whose tag name is "html"</dt>
7790: <dd>
7791: <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
7792: mode</a>.</p>
7793: </dd>
7794:
7795: <dt>An end tag whose tag name is "html"</dt>
7796: <dd>
7797: <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
7798: frameset</a>".</p>
7799: </dd>
7800:
7801: <dt>A start tag whose tag name is "noframes"</dt>
7802: <dd>
7803: <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
7804: mode</a>.</p>
7805: </dd>
7806:
7807: <dt>An end-of-file token</dt>
7808: <dd>
7809: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7810: </dd>
7811:
7812: <dt>Anything else</dt>
7813: <dd>
7814: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7815: </dd>
7816:
1.724 mike 7817: </dl><h5 id="the-after-after-body-insertion-mode"><span class="secno">7.2.5.25 </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 7818:
7819: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7820: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7821:
7822: <dl class="switch"><dt>A comment token</dt>
7823: <dd>
7824: <p>Append a <code>Comment</code> node to the <code>Document</code>
7825: object with the <code title="">data</code> attribute set to the
7826: data given in the comment token.</p>
7827: </dd>
7828:
7829: <dt>A DOCTYPE token</dt>
7830: <dt>A character token that is one of U+0009 CHARACTER
7831: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7832: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7833: <dt>A start tag whose tag name is "html"</dt>
7834: <dd>
7835: <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
7836: mode</a>.</p>
7837: </dd>
7838:
7839: <dt>An end-of-file token</dt>
7840: <dd>
7841: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7842: </dd>
7843:
7844: <dt>Anything else</dt>
7845: <dd>
7846: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7847: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7848: reprocess the token.</p>
7849: </dd>
7850:
1.724 mike 7851: </dl><h5 id="the-after-after-frameset-insertion-mode"><span class="secno">7.2.5.26 </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 7852:
7853: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7854: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7855:
7856: <dl class="switch"><dt>A comment token</dt>
7857: <dd>
7858: <p>Append a <code>Comment</code> node to the <code>Document</code>
7859: object with the <code title="">data</code> attribute set to the
7860: data given in the comment token.</p>
7861: </dd>
7862:
7863: <dt>A DOCTYPE token</dt>
7864: <dt>A character token that is one of U+0009 CHARACTER
7865: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7866: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7867: <dt>A start tag whose tag name is "html"</dt>
7868: <dd>
7869: <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
7870: mode</a>.</p>
7871: </dd>
7872:
7873: <dt>An end-of-file token</dt>
7874: <dd>
7875: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7876: </dd>
7877:
7878: <dt>A start tag whose tag name is "noframes"</dt>
7879: <dd>
7880: <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
7881: mode</a>.</p>
7882: </dd>
7883:
7884: <dt>Anything else</dt>
7885: <dd>
7886: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7887: </dd>
7888:
1.266 mike 7889: </dl></div><div class="impl">
7890:
1.724 mike 7891: <h4 id="the-end"><span class="secno">7.2.6 </span>The end</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7892:
7893: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7894: the document, the user agent must run the following steps:</p>
1.1 mike 7895:
1.484 mike 7896: <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
7897: "interactive" <!-- this also synchronously fires an event --> and
7898: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7899:
7900: <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
7901: document has finished parsing</a> is not empty, run these
7902: substeps:</p>
7903:
7904: <ol><li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the first
7905: <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
7906: execute when the document has finished parsing</a> has its
7907: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7908: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7909: blocking scripts</a>.</p></li>
7910:
7911: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7912: 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
7913: execute when the document has finished parsing</a>.</p></li>
7914:
7915: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7916: <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
7917: finished parsing</a> (i.e. shift out the first entry in the
7918: list).</p></li>
7919:
7920: <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
7921: document has finished parsing</a> is still not empty, repeat
7922: these substeps again from substep 1.</p>
7923:
7924: </li></ol></li>
7925:
1.671 mike 7926: <li><p><a href="browsers.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 7927: scripts that will execute as soon as possible</a> is
7928: empty.</p></li>
7929:
7930: <li><p><a href="browsers.html#queue-a-task">Queue a task</a> to <a href="browsers.html#fire-a-simple-event">fire a simple
7931: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7932: <code>Document</code>.</p></li>
7933:
7934: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
7935: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7936: the <code>Document</code>.</p></li>
7937:
7938: <li><p><a href="browsers.html#queue-a-task">Queue a task</a> to set the <a href="dom.html#current-document-readiness">current document
7939: readiness</a> to "complete". <!-- this also fires an event
7940: synchronously during the task --></p></li>
1.1 mike 7941:
1.484 mike 7942: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.1 mike 7943: context</a>, then <a href="browsers.html#queue-a-task">queue a task</a> to <a href="browsers.html#fire-a-simple-event">fire a
1.460 mike 7944: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7945: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7946: its <code title="dom-event-target">target</code> set to the
7947: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7948: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7949:
1.569 mike 7950: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
7951: context</a>, then <a href="browsers.html#queue-a-task">queue a task</a> to <a href="browsers.html#fire-a-simple-event">fire a
7952: simple event</a> named <code title="event-pageshow">pageshow</code> at the
7953: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object.</p></li>
7954:
1.484 mike 7955: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.651 mike 7956: object</a>, then <a href="browsers.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 7957: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7958: <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
7959: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7960: must bubble but not be cancelable and has no default
7961: action.</p></li>
1.1 mike 7962:
1.725 mike 7963: <li><p>If the <code>Document</code> has any <a href="offline.html#pending-application-cache-download-process-tasks">pending
7964: application cache download process tasks</a>, then <a href="browsers.html#queue-a-task" title="queue a task">queue</a> each such <a href="browsers.html#concept-task" title="concept-task">task</a> in the order they were added to
7965: the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application cache download process
7966: tasks</a>, and then empty the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application
7967: cache download process tasks</a>. The <a href="browsers.html#task-source">task source</a>
7968: for these <a href="browsers.html#concept-task" title="concept-task">tasks</a> is the
7969: <a href="browsers.html#networking-task-source">networking task source</a>.</p></li>
7970:
7971: <li><p>The <code>Document</code> is now <dfn id="completely-loaded">completely
7972: loaded</dfn>.</p></li>
7973:
7974: </ol><p>Except where otherwise specified, the <a href="browsers.html#task-source">task source</a>
7975: for the <a href="browsers.html#concept-task" title="concept-task">tasks</a> mentioned in this
7976: section is the <a href="browsers.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7977:
1.266 mike 7978: </div><div class="impl">
1.1 mike 7979:
1.724 mike 7980: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">7.2.7 </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 7981:
7982: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7983: conjunction with an XML pipeline, it is possible that the
7984: constructed DOM is not compatible with the XML tool chain in certain
7985: subtle ways. For example, an XML toolchain might not be able to
7986: represent attributes with the name <code title="">xmlns</code>,
7987: since they conflict with the Namespaces in XML syntax. There is also
7988: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7989: included in the DOM itself. This section specifies some rules for
7990: handling these issues.</p>
7991:
7992: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7993: drop DOCTYPEs altogether.</p>
7994:
7995: <p>If the XML API doesn't support attributes in no namespace that
7996: are named "<code title="">xmlns</code>", attributes whose names
7997: start with "<code title="">xmlns:</code>", or attributes in the
1.724 mike 7998: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
1.1 mike 7999: attributes.</p>
8000:
8001: <p>The tool may annotate the output with any namespace declarations
8002: required for proper operation.</p>
8003:
8004: <p>If the XML API being used restricts the allowable characters in
8005: the local names of elements and attributes, then the tool may map
8006: all element and attribute local names that the API wouldn't support
8007: to a set of names that <em>are</em> allowed, by replacing any
8008: character that isn't supported with the uppercase letter U and the
8009: six digits of the character's Unicode code point when expressed in
8010: hexadecimal, using digits 0-9 and capital letters A-F as the
8011: symbols, in increasing numeric order.</p>
8012:
8013: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
8014: parser</a>, though it is neither a legal HTML element name nor a
8015: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
8016: element name (though it's still not legal in HTML by any means).</p>
8017:
8018: <p class="example">As another example, consider the attribute
8019: <code>xlink:href</code>. Used on a MathML element, it becomes, after
8020: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
8021: attribute with a prefix "<code title="">xlink</code>" and a local
8022: name "<code title="">href</code>". However, used on an HTML element,
8023: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
8024: might not be accepted by an XML API. It could thus get converted,
8025: becoming "<code title="">xlinkU00003Ahref</code>".</p>
8026:
8027: <p class="note">The resulting names from this conversion
8028: conveniently can't clash with any attribute generated by the
8029: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
8030: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
8031: algorithm's table.</p>
8032:
8033: <p>If the XML API restricts comments from having two consecutive
8034: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
8035: U+0020 SPACE character between any such offending characters.</p>
8036:
8037: <p>If the XML API restricts comments from ending in a
8038: U+002D HYPHEN-MINUS character (-), the tool may insert a single
8039: U+0020 SPACE character at the end of such comments.</p>
8040:
8041: <p>If the XML API restricts allowed characters in character data,
1.439 mike 8042: attribute values, or comments, the tool may replace any U+000C FORM
8043: FEED (FF) character with a U+0020 SPACE character, and any other
8044: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 8045:
8046: <p>If the tool has no way to convey out-of-band information, then
8047: the tool may drop the following information:</p>
8048:
8049: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
8050: <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>
8051:
8052: <li>The association between form controls and forms that aren't
8053: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
8054: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
8055:
8056: </ul><p class="note">The mutations allowed by this section apply
8057: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
8058: applied. For example, a <code title=""><a::></code> start tag
8059: will be closed by a <code title=""></a::></code> end tag, and
8060: never by a <code title=""></aU00003AU00003A></code> end tag, even
8061: if the user agent is using the rules above to then generate an
8062: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
8063:
1.266 mike 8064: </div><div class="impl">
1.1 mike 8065:
1.724 mike 8066: <h4 id="an-introduction-to-error-handling-and-strange-cases-in-the-parser"><span class="secno">7.2.8 </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 8067:
8068: <p><i>This section is non-normative.</i></p>
8069:
8070: <p>This section examines some erroneous markup and discusses how
8071: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
8072:
8073:
1.724 mike 8074: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">7.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
1.1 mike 8075:
8076: <p><i>This section is non-normative.</i></p>
8077:
8078: <p>The most-often discussed example of erroneous markup is as
8079: follows:</p>
8080:
8081: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
8082:
8083: <p>The parsing of this markup is straightforward up to the "3". At
8084: this point, the DOM looks like this:</p>
8085:
1.159 mike 8086: <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
8087: 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 8088: <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
8089: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
8090: <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>
8091:
8092: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
8093: invoked. This is a simple case, in that the <var title="">formatting
8094: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
8095: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8096: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8097: <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 8098: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
8099: DOM tree is unmodified at this point.</p>
8100:
8101: <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
8102: the active formatting elements</a>, in this case just the
8103: <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
8104: for the "4" text node. After the end tag token for the "i" is also
8105: received, and the "5" text node is inserted, the DOM looks as
8106: follows:</p>
8107:
1.724 mike 8108: <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">7.2.8.2 </span>Misnested tags: <b><p></b></p></h5>
1.1 mike 8109:
8110: <p><i>This section is non-normative.</i></p>
8111:
8112: <p>A case similar to the previous one is the following:</p>
8113:
8114: <pre><b>1<p>2</b>3</p></pre>
8115:
8116: <p>Up to the "2" the parsing here is straightforward:</p>
8117:
1.159 mike 8118: <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 8119: "b" is parsed.</p>
8120:
8121: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8122: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8123: <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 8124: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
8125: <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>
8126:
8127: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
8128: in the previous example. However, in this case, there <em>is</em> a
8129: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
8130: this time the adoption agency algorithm isn't skipped over.</p>
8131:
1.159 mike 8132: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 8133: element. A conceptual "bookmark" marks the position of the
8134: <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
8135: elements</a>, but since that list has only one element in it,
8136: it won't have much effect.</p>
8137:
8138: <p>As the algorithm progresses, <var title="">node</var> ends up set
8139: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
8140: node</var> ends up set to the <var title="">furthest block</var>
8141: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
8142:
8143: <p>The <var title="">last node</var> gets appended (moved) to the
8144: <var title="">common ancestor</var>, so that the DOM looks like:</p>
8145:
1.159 mike 8146: <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 8147: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</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></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 8150: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</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><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 8153: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8154: elements</a>, so that when the "3" is parsed, it is appended to
8155: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8156:
1.724 mike 8157: <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">7.2.8.3 </span>Unexpected markup in tables</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8158:
8159: <p><i>This section is non-normative.</i></p>
8160:
8161: <p>Error handling in tables is, for historical reasons, especially
8162: strange. For example, consider the following markup:</p>
8163:
8164: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8165:
8166: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8167: directly inside a table like that, and the parser handles this case
8168: 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
8169: examining the DOM tree as it stands just after the
8170: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8171:
1.159 mike 8172: <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 8173: 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="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
8176: 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 8177: <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
8178: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8179: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8180: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8181: table">in table</a>".</p>
8182:
8183: <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
8184: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8185: 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
8186: then handled in a rather straight-forward manner, taking the parser
8187: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8188: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8189: row</a>" insertion modes, after which the DOM looks as
8190: follows:</p>
8191:
1.159 mike 8192: <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
8193: 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 8194: <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
8195: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8196: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8197: mode: in row">in row</a>".</p>
8198:
8199: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8200: <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
8201: 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
8202: mode</a>).</p>
8203:
1.159 mike 8204: <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 8205: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8206: node:</p>
8207:
1.159 mike 8208: <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 8209: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8210: 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 8211: 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
8212: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8213: marker having been removed by the "td" end tag token); and the
8214: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8215: table body">in table body</a>".</p>
8216:
8217: <p>Thus it is that the "bbb" character tokens are found. These
8218: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8219: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8220: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8221: body">in table body</a>"). The character tokens are collected,
8222: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8223: seen, they are processed as a group. Since they are not all spaces,
8224: 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,
8225: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8226: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8227: parent">foster parenting</a>.</p>
8228:
8229: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8230: active formatting elements are reconstructed</a>, a
8231: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8232: parent">foster parented</a>, and then the "bbb" text node is
8233: appended to it:</p>
8234:
1.159 mike 8235: <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
8236: <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 8237: <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
8238: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8239: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8240: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8241: mode: in table body">in table body</a>".</p>
8242:
8243: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8244: character">space characters</a> instead of "bbb", then those
8245: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8246: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8247:
8248: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8249: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8250: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8251: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8252: elements</a>, so the "ccc" character tokens after the table
8253: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8254: time after the table:</p>
8255:
1.724 mike 8256: <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">7.2.8.4 </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 8257:
8258: <p><i>This section is non-normative.</i></p>
8259:
8260: <p>Consider the following markup, which for this example we will
8261: 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 8262: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8263: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8264:
8265: <pre><div id=a>
8266: <script>
8267: var div = document.getElementById('a');
8268: parent.document.body.appendChild(div);
8269: </script>
8270: <script>
8271: alert(document.URL);
8272: </script>
8273: </div>
8274: <script>
8275: alert(document.URL);
8276: </script></pre>
8277:
8278: <p>Up to the first "script" end tag, before the script is parsed,
8279: the result is relatively straightforward:</p>
8280:
1.306 mike 8281: <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="">
8282: </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 8283: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8284:
1.159 mike 8285: <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 8286: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8287: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8288: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8289:
8290: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8291: is inserted <em>into the outer <code>Document</code>
8292: object</em>.</p>
8293:
8294: <p>This also means that the <a href="browsers.html#script-s-global-object">script's global object</a> is
8295: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8296: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8297: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8298:
8299: <p class="note">This isn't a security problem since the script that
1.306 mike 8300: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.714 mike 8301: only do so because the two <code>Document</code> object have the
8302: same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8303:
8304: <p>Thus, the first alert says "http://example.com/outer".</p>
8305:
1.306 mike 8306: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8307: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8308: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8309:
1.159 mike 8310: <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 8311:
8312:
8313:
8314:
1.724 mike 8315: <h3 id="serializing-html-fragments"><span class="secno">7.3 </span>Serializing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8316:
8317: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8318: algorithm</dfn>. The algorithm takes as input a DOM
8319: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8320: exception.</p>
8321:
8322: <p class="note">This algorithm serializes the <em>children</em> of
8323: the node being serialized, not the node itself.</p>
8324:
8325: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8326: the empty string.</p></li>
8327:
8328: <li>
8329:
8330: <p>For each child node of <var title="">the node</var>, in
8331: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8332:
8333: </p><ol><li><p>Let <var title="">current node</var> be the child node
8334: being processed.</p></li>
8335:
8336: <li>
8337:
8338: <p>Append the appropriate string from the following list to
8339: <var title="">s</var>:</p>
8340:
8341: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8342:
8343: <dd>
8344:
1.588 mike 8345: <p>Append a U+003C LESS-THAN SIGN character character (<),
8346: followed by the element's tag name. (For nodes created by the
8347: <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
1.1 mike 8348: lowercase.)</p>
8349:
8350: <p>For each attribute that the element has, append a U+0020
8351: SPACE character, the attribute's name (which, for attributes
8352: 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 8353: U+003D EQUALS SIGN character (=), a U+0022 QUOTATION MARK
8354: character ("), the attribute's value, <a href="#escapingString" title="escaping a string">escaped as described below</a> in
8355: <i>attribute mode</i>, and a second U+0022 QUOTATION MARK
8356: character (").</p>
1.1 mike 8357:
8358: <p>While the exact order of attributes is UA-defined, and may
8359: depend on factors such as the order that the attributes were
8360: given in the original markup, the sort order must be stable,
8361: such that consecutive invocations of this algorithm serialize an
8362: element's attributes in the same order.</p>
8363:
1.588 mike 8364: <p>Append a U+003E GREATER-THAN SIGN character (>).</p>
1.1 mike 8365:
8366: <p>If <var title="">current node</var> is an
1.5 mike 8367: <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 8368: <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 8369: <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>,
8370: <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 8371: <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 8372: <code><a href="obsolete.html#wbr">wbr</a></code> element, then continue on to the next child
1.589 mike 8373: node at this point.</p> <!-- also, i guess: image and isindex,
8374: but we don't list those because we don't consider those
8375: "elements", more "macros", and thus we should never serialize
8376: them -->
1.1 mike 8377:
8378: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8379: <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 8380: a U+000A LINE FEED (LF) character.</p>
8381:
8382: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8383: serialization algorithm</a> on the <var title="">current
8384: node</var> element (thus recursing into this algorithm for
1.588 mike 8385: that element), followed by a U+003C LESS-THAN SIGN character
8386: (<), a U+002F SOLIDUS character (/), the element's tag name
8387: again, and finally a U+003E GREATER-THAN SIGN character
8388: (>).</p>
1.1 mike 8389:
8390: </dd>
8391:
8392:
8393: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8394: node</dt>
8395:
8396: <dd>
8397:
1.19 mike 8398: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8399: <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 8400: <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 8401: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8402: if the parent of <var title="">current node</var> is
8403: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element and <a href="browsers.html#concept-n-script" title="concept-n-script">scripting is enabled</a> for the
8404: node, then append the value of <var title="">current
8405: node</var>'s <code title="">data</code> IDL attribute
8406: literally.</p>
1.1 mike 8407:
8408: <p>Otherwise, append the value of <var title="">current
1.192 mike 8409: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8410: below</a>.</p>
8411:
8412: </dd>
8413:
8414:
8415: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8416:
8417: <dd>
8418:
8419: <p>Append the literal string <code><!--</code> (U+003C
8420: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8421: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8422: attribute, followed by the literal string <code>--></code>
8423: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8424: SIGN).</p>
8425:
8426: </dd>
8427:
8428:
8429: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8430:
8431: <dd>
8432:
8433: <p>Append the literal string <code><?</code> (U+003C
8434: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8435: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8436: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8437: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8438: character (>).</p>
1.1 mike 8439:
8440: </dd>
8441:
8442:
8443: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8444:
8445: <dd>
8446:
8447: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8448: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8449: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8450: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8451: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8452: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8453: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8454: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8455:
8456: </dd>
8457:
8458:
8459: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8460: occur as children of elements. If, despite this, they somehow do
8461: occur, this algorithm must raise an
8462: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8463:
8464: </li>
8465:
8466: </ol></li>
8467:
8468: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8469:
8470: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8471: purposes of the algorithm above) consists of replacing any
8472: occurrences of the "<code title="">&</code>" character by the
8473: string "<code title="">&amp;</code>", any occurrences of the
8474: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8475: 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
8476: 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>
8477:
8478: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8479: agent, and are therefore not covered in the algorithm above.</p>
8480:
8481: <p class="note">It is possible that the output of this algorithm, if
8482: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8483: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8484: element to which a <code title="">Comment</code> node has been
8485: appended is serialized and the output is then reparsed, the comment
8486: will end up being displayed in the text field. Similarly, if, as a
8487: result of DOM manipulation, an element contains a comment that
8488: contains the literal string "<code title="">--></code>", then
8489: when the result of serializing the element is parsed, the comment
8490: will be truncated at that point and the rest of the comment will be
8491: interpreted as markup. More examples would be making a
8492: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8493: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8494: 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
8495: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8496: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8497:
8498:
1.724 mike 8499: <h3 id="parsing-html-fragments"><span class="secno">7.4 </span>Parsing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8500:
8501: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8502: algorithm</dfn>. The algorithm optionally takes as input an
8503: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8504: parser, as well as <var title="">input</var>, a string to parse, and
8505: returns a list of zero or more nodes.</p>
8506:
8507: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8508: in the parser section are parts that only occur if the parser was
8509: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8510: with such markings for informational purposes only; such markings
8511: have no normative weight. If it is possible for a condition
8512: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8513: parser wasn't created for the purposes of handling this algorithm,
8514: then that is an error in the specification.</p>
8515:
8516: <ol><li>
8517:
8518: <p>Create a new <code>Document</code> node, and mark it as being
8519: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8520:
8521: </li>
8522:
8523: <li>
8524:
8525: <p>If there is a <var title="">context</var> element, and the
8526: <code>Document</code> of the <var title="">context</var> element
8527: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8528: 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
8529: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8530: mode</a>, then let the <code>Document</code> be in
8531: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8532: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8533:
8534: </li>
8535:
8536: <li>
8537:
8538: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8539: the just created <code>Document</code> node.</p>
8540:
8541: </li>
8542:
8543: <li>
8544:
8545: <p>If there is a <var title="">context</var> element, run these
8546: substeps:</p>
8547:
8548: <ol><li>
8549:
1.541 mike 8550: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8551: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8552:
1.159 mike 8553: <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 8554: element</dt>
8555:
1.541 mike 8556: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8557:
8558:
1.672 mike 8559: <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>,
8560: <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 8561: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8562:
1.541 mike 8563: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8564:
8565:
1.672 mike 8566: <dt>If it is a <code><a href="semantics.html#script">script</a></code> element</dt>
8567:
8568: <dd>Switch the tokenizer to the <a href="#script-data-state">script data state</a>.</dd>
8569:
8570:
1.1 mike 8571: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8572:
1.541 mike 8573: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8574: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8575: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8576:
8577:
1.42 mike 8578: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8579:
1.541 mike 8580: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8581: state</a>.</dd>
1.1 mike 8582:
8583:
8584: <dt>Otherwise</dt>
8585:
1.541 mike 8586: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8587:
1.672 mike 8588: </dl><p class="note">For performance reasons, an implementation that
8589: uses the actual state machine described in this specification
8590: directly could use the PLAINTEXT state instead of the RAWTEXT
8591: and script data states where those are mentioned in the list
8592: above. They are equivalent, since there is no <a href="#appropriate-end-tag-token">appropriate
8593: end tag token</a> in the fragment case, but involve far fewer
8594: state transitions.</p>
8595:
8596: </li>
1.1 mike 8597:
8598: <li>
8599:
1.159 mike 8600: <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 8601: with no attributes.</p>
8602:
8603: </li>
8604:
8605: <li>
8606:
8607: <p>Append the element <var title="">root</var> to the
8608: <code>Document</code> node created above.</p>
8609:
8610: </li>
8611:
8612: <li>
8613:
8614: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8615: it contains just the single element <var title="">root</var>.</p>
8616:
8617: </li>
8618:
8619: <li>
8620:
8621: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8622: parser's insertion mode appropriately</a>.</p>
8623:
8624: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8625:
8626: </li>
8627:
8628: <li>
8629:
8630: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8631: to the nearest node to the <var title="">context</var> element
8632: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8633: ancestor chain, and including the element itself, if it is a
8634: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8635: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8636:
8637: </li>
8638:
8639: </ol></li>
8640:
8641: <li>
8642:
8643: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8644: parser</a> just created the <var title="">input</var>. The
8645: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8646: <i>irrelevant</i>.</p>
8647:
8648: </li>
8649:
8650: <li>
8651:
8652: <p>Start the parser and let it run until it has consumed all the
8653: characters just inserted into the input stream.</p>
8654:
8655: </li>
8656:
8657: <li>
8658:
8659: <p>If there is a <var title="">context</var> element, return the
8660: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8661: order</a>.</p>
8662:
8663: <p>Otherwise, return the children of the <code>Document</code>
8664: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8665:
8666: </li>
8667:
1.123 mike 8668: </ol></div></body></html>
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