Annotation of html5/spec/syntax.html, revision 1.726
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; }
6: h4 { margin: 2.5em 0 0.75em 0; }
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14: dt + dt { margin-top: 0; }
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; }
19: p + * > li, dd li { margin: 1em 0; }
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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; }
44: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
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;
121: color: black;
122: margin: 0 0 1em 0.15em;
123: padding: 0 1em 0.25em 0.75em;
124: border-left: solid #9999FF 0.25em;
125: position: relative;
126: z-index: 1;
127: }
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130: z-index: 2;
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132: left: -1.15em;
133: height: 2em;
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135: background: #EEEEFF;
136: content: ' ';
137: border-style: none none solid solid;
138: border-color: #9999FF;
139: border-width: 0.25em;
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:
1.671 mike 169: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
170: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
171: #configUI p label { display: block; }
172: #configUI #updateUI, #configUI .loginUI { text-align: center; }
173: #configUI input[type=button] { display: block; margin: auto; }
1.267 mike 174: </style><style type="text/css">
175:
1.292 mike 176: .applies thead th > * { display: block; }
177: .applies thead code { display: block; }
178: .applies tbody th { whitespace: nowrap; }
179: .applies td { text-align: center; }
180: .applies .yes { background: yellow; }
181:
1.267 mike 182: .matrix, .matrix td { border: none; text-align: right; }
183: .matrix { margin-left: 2em; }
184:
185: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
186: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
187: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
188:
189: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
190: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
191: #table-example-1 caption { padding-bottom: 0.5em; }
192: #table-example-1 thead, #table-example-1 tbody { border: none; }
193: #table-example-1 th, #table-example-1 td { border: solid thin; }
194: #table-example-1 th { font-weight: normal; }
195: #table-example-1 td { border-style: none solid; vertical-align: top; }
196: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
197: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
198: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
199: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
200: #table-example-1 tbody td:first-child::after { content: leader(". "); }
201: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
202: #table-example-1 tbody td:first-child + td { width: 10em; }
203: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
204: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
205:
206: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
207: .apple-table-examples * { font-family: "Times", serif; }
208: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
209: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
210: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
211: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
212: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
213: .apple-table-examples td { text-align: right; vertical-align: top; }
214: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
215: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
216: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
217: .apple-table-examples sup { line-height: 0; }
218:
1.724 mike 219: .details-example img { vertical-align: top; }
220:
221: </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 222: function getCookie(name) {
223: var params = location.search.substr(1).split("&");
224: for (var index = 0; index < params.length; index++) {
225: if (params[index] == name)
226: return "1";
227: var data = params[index].split("=");
228: if (data[0] == name)
229: return unescape(data[1]);
230: }
231: var cookies = document.cookie.split("; ");
232: for (var index = 0; index < cookies.length; index++) {
233: var data = cookies[index].split("=");
234: if (data[0] == name)
235: return unescape(data[1]);
236: }
237: return null;
238: }
239: function load(script) {
240: var e = document.createElement('script');
241: e.setAttribute('src', 'http://www.whatwg.org/specs/web-apps/current-work/' + script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
242: document.body.appendChild(e);
243: }
244: function init() {
245: if (location.search == '?slow-browser')
246: return;
247: var configUI = document.createElement('div');
248: configUI.id = 'configUI';
249: document.body.appendChild(configUI);
250: // load('reviewer.js'); // would need cross-site XHR
251: if (document.getElementById('head'))
252: load('toc.js');
253: load('styler.js');
254: // load('updater.js'); // would need cross-site XHR
1.724 mike 255: load('dfn.js'); // doesn't support split-out specs, but, oh well.
1.671 mike 256: // load('status.js'); // would need cross-site XHR
257: if (getCookie('profile') == '1')
258: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
259: fixBrokenLink();
260: }
261: </script><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css">
1.2 mike 262: <script src="link-fixup.js"></script>
1.724 mike 263: <link href="editing.html" title="6 User Interaction" rel="prev">
1.2 mike 264: <link href="spec.html#contents" title="Table of contents" rel="index">
1.724 mike 265: <link href="named-character-references.html" title="7.5 Named character references" rel="next">
1.671 mike 266: </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
1.1 mike 267: <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 268: <h1>HTML5</h1>
1.1 mike 269: <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 270:
1.123 mike 271: </div><nav>
1.724 mike 272: <a href="editing.html">← 6 User Interaction</a> –
1.2 mike 273: <a href="spec.html#contents">Table of contents</a> –
1.724 mike 274: <a href="named-character-references.html">7.5 Named character references →</a>
1.726 ! mike 275: </nav><p>This is revision 1.3679.</p>
1.659 mike 276:
1.1 mike 277:
1.725 mike 278: <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
279: labeled with an <a href="infrastructure.html#html-mime-type">HTML MIME type</a>. Rules for XML resources
280: are discussed in the section below entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
1.724 mike 281: 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 282:
283: <p><i>This section only applies to documents, authoring tools, and
284: markup generators. In particular, it does not apply to conformance
285: checkers; conformance checkers must use the requirements given in
286: the next section ("parsing HTML documents").</i></p>
287:
1.123 mike 288: </div><p>Documents must consist of the following parts, in the given
289: order:</p><ol><li>Optionally, a single U+FEFF BYTE ORDER MARK (BOM) character.</li>
1.1 mike 290:
291: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
292: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
293:
294: <li>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a>.
295:
296: </li><li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
297: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
298:
1.159 mike 299: <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 300:
301: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
302: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
303:
304: </ol><p>The various types of content mentioned above are described in the
1.123 mike 305: 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 306: declarations</a> are to be serialized, as discussed in the
1.123 mike 307: section on that topic.</p><div class="note">
1.1 mike 308:
1.159 mike 309: <p>Space characters before the root <code><a href="semantics.html#the-html-element-0">html</a></code> element, and
310: space characters at the start of the <code><a href="semantics.html#the-html-element-0">html</a></code> element and
311: before the <code><a href="semantics.html#the-head-element-0">head</a></code> element, will be dropped when the
1.1 mike 312: document is parsed; space characters <em>after</em> the root
1.159 mike 313: <code><a href="semantics.html#the-html-element-0">html</a></code> element will be parsed as if they were at the end
314: of the <code><a href="semantics.html#the-body-element-0">body</a></code> element. Thus, space characters around the
1.1 mike 315: root element do not round-trip.</p>
316:
317: <p>It is suggested that newlines be inserted after the DOCTYPE,
318: after any comments that are before the root element, after the
1.159 mike 319: <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
320: that are inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element but before the
321: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 322:
1.123 mike 323: </div><p>Many strings in the HTML syntax (e.g. the names of elements and
1.1 mike 324: their attributes) are case-insensitive, but only for characters in
1.547 mike 325: the ranges U+0041 to U+005A (LATIN CAPITAL LETTER A to LATIN CAPITAL
326: LETTER Z) and U+0061 to U+007A (LATIN SMALL LETTER A to LATIN SMALL
1.1 mike 327: LETTER Z). For convenience, in this section this is just referred to
1.724 mike 328: 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 329: but required, header.</p><p class="note">DOCTYPEs are required for legacy reasons. When
1.1 mike 330: omitted, browsers tend to use a different rendering mode that is
331: incompatible with some specifications. Including the DOCTYPE in a
332: document ensures that the browser makes a best-effort attempt at
1.123 mike 333: following the relevant specifications.</p><p>A DOCTYPE must consist of the following characters, in this
1.588 mike 334: order:</p><ol class="brief"><li>A U+003C LESS-THAN SIGN character (<).</li>
335: <li>A U+0021 EXCLAMATION MARK character (!).</li>
1.1 mike 336: <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>
337: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
338: <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>
339: <li>Optionally, a <a href="#doctype-legacy-string">DOCTYPE legacy string</a> (defined below).</li>
340: <li>Zero or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.588 mike 341: <li>A U+003E GREATER-THAN SIGN character (>).</li>
1.1 mike 342: </ol><p class="note">In other words, <code><!DOCTYPE HTML></code>,
1.123 mike 343: case-insensitively.</p><p>For the purposes of HTML generators that cannot output HTML
1.1 mike 344: markup with the short DOCTYPE "<code title=""><!DOCTYPE
345: HTML></code>", a <dfn id="doctype-legacy-string">DOCTYPE legacy string</dfn> may be inserted
346: into the DOCTYPE (in the position defined above). This string must
1.123 mike 347: 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 348: <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 349: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 350: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>quote mark</i>).</li>
1.465 mike 351: <li>The literal string "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>".</li>
1.1 mike 352: <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>
353: </ol><p class="note">In other words, <code><!DOCTYPE HTML SYSTEM
354: "about:legacy-compat"></code> or <code><!DOCTYPE HTML SYSTEM
355: 'about:legacy-compat'></code>, case-insensitively except for the bit
1.724 mike 356: 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 357: the document is generated from a system that cannot output the
1.724 mike 358: 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 359: <a href="#raw-text-elements">raw text elements</a>, <a href="#rcdata-elements">RCDATA elements</a>,
360: <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 361:
362: <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 363: <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>,
364: <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 365: <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 366: <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 367:
1.373 mike 368: <dt><dfn id="raw-text-elements">Raw text elements</dfn></dt>
1.1 mike 369:
370: <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 371: noscript don't count as raw text for syntax purposes -->
1.1 mike 372:
1.373 mike 373: <dt><dfn id="rcdata-elements">RCDATA elements</dfn></dt>
1.1 mike 374:
1.159 mike 375: <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 376:
1.373 mike 377: <dt><dfn id="foreign-elements">Foreign elements</dfn></dt>
1.1 mike 378:
1.724 mike 379: <dd>Elements from the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>
380: and the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dd>
1.1 mike 381:
1.373 mike 382: <dt><dfn id="normal-elements">Normal elements</dfn></dt>
1.1 mike 383:
384: <dd>All other allowed <a href="infrastructure.html#html-elements">HTML elements</a> are normal
385: elements.</dd>
386:
387: </dl><p><dfn id="syntax-tags" title="syntax-tags">Tags</dfn> are used to delimit the start
1.373 mike 388: and end of elements in the markup. <a href="#raw-text-elements" title="raw text
389: elements">Raw text</a>, <a href="#rcdata-elements" title="RCDATA
390: elements">RCDATA</a>, and <a href="#normal-elements" title="normal
391: elements">normal</a> elements have a <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> to indicate where they
392: begin, and an <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> to
393: indicate where they end. The start and end tags of certain
394: <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 395: later. Those that cannot be omitted must not be omitted. <a href="#void-elements">Void
396: elements</a> only have a start tag; end tags must not be
1.373 mike 397: specified for <a href="#void-elements">void elements</a>. <a href="#foreign-elements">Foreign
398: elements</a> must either have a start tag and an end tag, or a
399: start tag that is marked as self-closing, in which case they must
400: not have an end tag.</p><p>The contents of the element must be placed between just after the
1.1 mike 401: start tag (which <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied,
402: in certain cases</a>) and just before the end tag (which again,
403: <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied in certain
404: cases</a>). The exact allowed contents of each individual element
405: depends on the content model of that element, as described earlier
406: in this specification. Elements must not contain content that their
407: content model disallows. In addition to the restrictions placed on
408: the contents by those content models, however, the five types of
1.123 mike 409: 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 410: no end tag, no content can be put between the start tag and the end
1.373 mike 411: 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
412: 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
413: must not contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.
1.1 mike 414: There are also <a href="#cdata-rcdata-restrictions">further
1.373 mike 415: restrictions</a> described below.</p><p><a href="#foreign-elements">Foreign elements</a> whose start tag is marked as
416: self-closing can't have any contents (since, again, as there's no
417: end tag, no content can be put between the start tag and the end
418: tag). <a href="#foreign-elements">Foreign elements</a> whose start tag is <em>not</em>
419: 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 420: 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 421:
422: <p>The HTML syntax does not support namespace
423: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
424:
425: <p>For instance, consider the following HTML fragment:</p>
426:
427: <pre><p>
428: <svg>
429: <metadata>
430: <!-- this is invalid -->
431: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
432: </metadata>
433: </svg>
434: </p></pre>
435:
436: <p>The innermost element, <code title="">cdr:license</code>, is
437: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
438: XML). In fact, as the comment in the fragment above says, the
439: fragment is actually non-conforming. This is because the SVG
440: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
441:
442: </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 443: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>. Some
444: <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 445: content they are allowed to hold, beyond the restrictions imposed by
446: the content model and those described in this paragraph. Those
1.123 mike 447: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 448: giving the element's name. HTML elements all have names that only
1.464 mike 449: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
450: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
451: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
452: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 453: elements</a>, may be written with any mix of lower- and uppercase
454: letters that, when converted to all-lowercase, matches the element's
1.724 mike 455: 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 456: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.588 mike 457: SIGN character (<).</li>
1.1 mike 458:
459: <li>The next few characters of a start tag must be the element's
460: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
461:
462: <li>If there are to be any attributes in the next step, there must
463: first be one or more <a href="infrastructure.html#space-character" title="space character">space
464: characters</a>.</li>
465:
466: <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
467: below. Attributes may be separated from each other by one or more
468: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
469:
470: <li>After the attributes, there may be one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>. (Some attributes
471: are required to be followed by a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes section</a> below.)</li>
472:
473: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 474: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
1.588 mike 475: element</a>, then there may be a single U+002F SOLIDUS character
476: (/). This character has no effect on <a href="#void-elements">void elements</a>,
477: but on <a href="#foreign-elements">foreign elements</a> it marks the start tag as
478: self-closing.</li>
1.1 mike 479:
480: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
1.588 mike 481: SIGN character (>).</li>
1.1 mike 482:
1.724 mike 483: </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 484: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.588 mike 485: SIGN character (<).</li>
1.1 mike 486:
487: <li>The second character of an end tag must be a U+002F SOLIDUS
1.588 mike 488: character (/).</li>
1.1 mike 489:
490: <li>The next few characters of an end tag must be the element's
491: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
492:
493: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
494: character">space characters</a>.</li>
495:
1.588 mike 496: <li>Finally, end tags must be closed by a U+003E GREATER-THAN SIGN
497: character (>).</li>
1.1 mike 498:
1.724 mike 499: </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 500: 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 501: one or more characters other than the <a href="infrastructure.html#space-character" title="space
502: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
503: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
504: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
505: the control characters, and any characters that are not defined by
1.462 mike 506: Unicode. In the HTML syntax, attribute names, even those for
507: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
508: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 509: 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 510: 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 511: 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 512:
513: <dd>
514:
515: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
516: name</a>.</p>
517:
518: <div class="example">
519:
520: <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
521: the empty attribute syntax:</p>
522:
523: <pre><input <em>disabled</em>></pre>
524:
525: </div>
526:
527: <p>If an attribute using the empty attribute syntax is to be
528: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
529: character</a> separating the two.</p>
530:
531: </dd>
532:
1.2 mike 533: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 534:
535: <dd>
536:
537: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
538: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
539: characters</a>, followed by a single U+003D EQUALS SIGN
540: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
541: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
542: addition to the requirements given above for attribute values,
543: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
1.588 mike 544: characters</a>, any U+0022 QUOTATION MARK characters ("),
545: U+0027 APOSTROPHE characters ('), U+003D EQUALS SIGN
546: characters (=), U+003C LESS-THAN SIGN characters (<), U+003E
547: GREATER-THAN SIGN characters (>), or U+0060 GRAVE ACCENT
548: characters (`), and must not be the empty string.</p>
1.463 mike 549:
550: <!-- The ` character is in this list on a temporary basis, waiting
551: for IE to fix it's parsing bug whereby it treats ` as an
552: attribute value delimiter. Otherwise, escaping software that
553: tries to be clever and not use quotes when it doesn't need to
554: could be tricked by an attacker.
555:
556: Posit a site that allows the user to input text that is used
557: verbatim in two attributes, such that the user can set the
558: first attribute's value to:
559:
560: `
561:
562: ...and the second to:
563:
564: ` onload='...payload...' end=x
565:
566: ...with the assumption that the site is going to not quote
567: the first one, and quote the second one with double quotes:
568:
569: <body title=` class="` onload='...payload...' end=x">
570:
571: In IE, this is treated as:
572:
573: <body title=' class="'
574: onload='...payload...'
575: end='x"'>
576:
577: -->
578:
1.1 mike 579:
580: <div class="example">
581:
582: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
583: with the unquoted attribute value syntax:</p>
584:
585: <pre><input <em>value=yes</em>></pre>
586:
587: </div>
588:
589: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 590: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 591: 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 592: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
593:
594: </dd>
595:
596: <dt>Single-quoted attribute value syntax</dt>
597:
598: <dd>
599:
600: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
601: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
602: characters</a>, followed by a single U+003D EQUALS SIGN
603: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
604: character">space characters</a>, followed by a single U+0027
1.588 mike 605: APOSTROPHE character ('), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 606: addition to the requirements given above for attribute values,
1.588 mike 607: must not contain any literal U+0027 APOSTROPHE characters ('), and
608: finally followed by a second single U+0027 APOSTROPHE character
609: (').</p>
1.1 mike 610:
611: <div class="example">
612:
613: <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
614: single-quoted attribute value syntax:</p>
615:
616: <pre><input <em>type='checkbox'</em>></pre>
617:
618: </div>
619:
620: <p>If an attribute using the single-quoted attribute syntax is to
621: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
622: character</a> separating the two.</p>
623:
624: </dd>
625:
626: <dt>Double-quoted attribute value syntax</dt>
627:
628: <dd>
629:
630: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
631: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
632: characters</a>, followed by a single U+003D EQUALS SIGN
633: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
634: character">space characters</a>, followed by a single U+0022
1.588 mike 635: QUOTATION MARK character ("), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 636: addition to the requirements given above for attribute values,
1.588 mike 637: must not contain any literal U+0022 QUOTATION MARK characters ("),
638: and finally followed by a second single U+0022 QUOTATION MARK
639: character (").</p>
1.1 mike 640:
641: <div class="example">
642:
643: <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
644: double-quoted attribute value syntax:</p>
645:
646: <pre><input <em>name="be evil"</em>></pre>
647:
648: </div>
649:
650: <p>If an attribute using the double-quoted attribute syntax is to
651: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
652: character</a> separating the two.</p>
653:
654: </dd>
655:
656: </dl><p>There must never be two or more attributes on the same start tag
657: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 658: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
659: one of the namespaced attributes given by the local name and
660: namespace of the first and second cells of a row from the following
661: table, it must be written using the name given by the third cell
662: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
1.724 mike 663: </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>
664: </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>
665: </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>
666: </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>
667: </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>
668: </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>
669: </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>
670: </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>
671: </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>
672: </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>
673: </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>
674: </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 675: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in <a href="#syntax">the
1.724 mike 676: 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 677: is not present; it is implied, but it is still there. An HTML
1.159 mike 678: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 679: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 680: 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
681: 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
682: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
683: 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 684: element is empty, or--> if the first thing inside the
1.159 mike 685: <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
686: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
687: 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
688: 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 689: 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 690: 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 691: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
1.724 mike 692: tag is present, the parser makes <style> and <script type="text/javascript"> elements
1.1 mike 693: between </head> and <body> end up in the <head> instead of implying
1.159 mike 694: 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
695: 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 696: 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 697: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
698: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 699: 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 700: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
701: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 702: <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 703: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
704: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
705: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 706: 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 707: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
708: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
709: <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 710: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 711: <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 712: <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>,
713: <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>,
714: <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>,
715: <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>,
716: <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 717: <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>,
718: element, or if there is no more content in the parent element and
1.123 mike 719: 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 720: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
721: 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 722: 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 723: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
724: 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 725: 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 726: <select>; commented out text below can handle the non-<select> case
1.123 mike 727: 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 728: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
729: <code>select</code> element and--> is immediately followed by
730: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
731: that are ancestors of the <code>optgroup</code> element, up to and
732: including the first ancestor element that is not an
733: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 734: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 735: <select><optgroup></select>
736: <p id=x><optgroup></optgroup>x</p>
737: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
738: <p><optgroup id=x><optgroup></optgroup>x</p>
739: <p><optgroup><optgroup id=x>x</p>
1.123 mike 740: --><!-- </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 741: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
742: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
743: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 744: 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 745: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
746: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
747: 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 748: 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 749: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 750: <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 751: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
752: 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 753: 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 754: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
755: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
756: 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
757: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
758: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 759: 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 760: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
761: 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 762: 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 763: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
764: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 765: 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 766: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
767: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 768: 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 769: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
770: 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 771: 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 772: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
773: 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 774: 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 775: 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 776: 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 777: elements, even though these elements are technically allowed inside
778: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
779: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
780: 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 781: 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
782: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 783: 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>
784: elements. This does not affect the processing of the element. The
1.304 mike 785: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 786: <em>must</em> be included if the element's contents themselves start
787: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
788: otherwise the leading newline in the contents would be treated like
789: the optional newline, and ignored).</p><div class="example">
1.1 mike 790: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
791: <pre><pre>Hello</pre></pre>
792: <pre><pre><br>Hello</pre></pre>
1.724 mike 793: </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 794: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
795: contain any occurrences of the string "<code title=""></</code>"
796: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 797: case-insensitively match the tag name of the element followed by one
798: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 799: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.724 mike 800: 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 801: attributes, and comments. Text must consist of Unicode characters.
802: Text must not contain U+0000 characters. Text must not contain
1.316 mike 803: permanently undefined Unicode characters (noncharacters). Text must
804: not contain control characters other than <a href="infrastructure.html#space-character" title="space
805: character">space characters</a>. Extra constraints are placed on
806: what is and what is not allowed in text based on where the text is
1.724 mike 807: 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 808: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
809: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.724 mike 810: 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 811: to escape characters that couldn't otherwise legally be included in
1.588 mike 812: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND character
813: (&). Following this, there are three possible kinds of character
814: references:</p><dl><dt>Named character references</dt>
1.1 mike 815:
816: <dd>The ampersand must be followed by one of the names given in the
817: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
1.677 mike 818: case. <span class="impl">The name must be one that is terminated by
819: a U+003B SEMICOLON character (;).</span></dd>
1.1 mike 820:
821:
822: <dt>Decimal numeric character reference</dt>
823:
824: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 825: character (#), followed by one or more digits in the range U+0030
826: DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing a base-ten
827: integer that corresponds to a Unicode code point that is allowed
828: according to the definition below. The digits must then be followed
829: by a U+003B SEMICOLON character (;).</dd>
1.1 mike 830:
831:
832: <dt>Hexadecimal numeric character reference</dt>
833:
834: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 835: character (#), which must be followed by either a U+0078 LATIN
836: SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL LETTER X
837: character (X), which must then be followed by one or more digits in
838: the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061
839: LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041
840: LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
1.464 mike 841: representing a base-sixteen integer that corresponds to a Unicode
842: code point that is allowed according to the definition below. The
843: digits must then be followed by a U+003B SEMICOLON character
844: (;).</dd>
1.378 mike 845:
846: </dl><p>The numeric character reference forms described above are allowed
847: to reference any Unicode code point other than U+0000, permanently
848: undefined Unicode characters (noncharacters), and control characters
849: other than <a href="infrastructure.html#space-character" title="space character">space
850: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 851: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
852: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
853: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
1.724 mike 854: (<), 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 855: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
856: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
857: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
858: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
859: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
860: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
861: that the text must not contain the three character sequence U+005D
862: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
863: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
864: section must be ended by the three character sequence U+005D RIGHT
865: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.724 mike 866: SIGN (<code title="">]]></code>).</p><div class="example">
867:
868: <p>CDATA sections can only be used in foreign content (MathML or
869: SVG). In this example, a CDATA section is used to escape the
870: contents of an <code>ms</code> element:</p>
871:
872: <pre><p>You can add a string to a number, but this stringifies the number:</p>
873: <math>
874: <ms><![CDATA[x<y]]></ms>
875: <mo>+</mo>
876: <mn>3</mn>
877: <mo>=</mo>
878: <ms><![CDATA[x<y3]]></ms>
879: </math></pre>
880:
881: </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 882: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
883: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
884: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
885: restriction that the text must not start with a single U+003E
1.588 mike 886: GREATER-THAN SIGN character (>), nor start with a U+002D
887: HYPHEN-MINUS character (-) followed by a U+003E GREATER-THAN SIGN
888: (>) character, nor contain two consecutive U+002D HYPHEN-MINUS
889: characters (<code title="">--</code>), nor end with a U+002D
890: HYPHEN-MINUS character (-). Finally, the comment must be ended by
1.1 mike 891: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 892: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 893:
1.724 mike 894: <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 895:
896: <p><i>This section only applies to user agents, data mining tools,
897: and conformance checkers.</i></p>
898:
899: <p class="note">The rules for parsing XML documents into DOM trees
900: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
901: syntax</a>".</p>
902:
903: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
904: rules described in this section to generate the DOM trees. Together,
905: these rules define what is referred to as the <dfn id="html-parser">HTML
906: parser</dfn>.</p>
907:
908: <div class="note">
909:
910: <p>While the HTML syntax described in this specification bears a
911: close resemblance to SGML and XML, it is a separate language with
912: its own parsing rules.</p>
913:
1.183 mike 914: <p>Some earlier versions of HTML (in particular from HTML2 to
915: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 916: (if any) web browsers ever implemented true SGML parsing for HTML
917: documents; the only user agents to strictly handle HTML as an SGML
918: application have historically been validators. The resulting
919: confusion — with validators claiming documents to have one
920: representation while widely deployed Web browsers interoperably
921: implemented a different representation — has wasted decades
922: of productivity. This version of HTML thus returns to a non-SGML
923: basis.</p>
924:
925: <p>Authors interested in using SGML tools in their authoring
926: pipeline are encouraged to use XML tools and the XML serialization
927: of HTML.</p>
928:
929: </div>
930:
931: <p>This specification defines the parsing rules for HTML documents,
932: whether they are syntactically correct or not. Certain points in the
933: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
934: errors</dfn>. The error handling for parse errors is well-defined:
935: user agents must either act as described below when encountering
936: such problems, or must abort processing at the first error that they
937: encounter for which they do not wish to apply the rules described
938: below.</p>
939:
940: <p>Conformance checkers must report at least one parse error
941: condition to the user if one or more parse error conditions exist in
942: the document and must not report parse error conditions if none
943: exist in the document. Conformance checkers may report more than one
1.174 mike 944: parse error condition if more than one parse error condition exists
1.1 mike 945: in the document. Conformance checkers are not required to recover
946: from parse errors.</p>
947:
948: <p class="note">Parse errors are only errors with the
949: <em>syntax</em> of HTML. In addition to checking for parse errors,
950: conformance checkers will also verify that the document obeys all
951: the other conformance requirements described in this
952: specification.</p>
953:
954: <p>For the purposes of conformance checkers, if a resource is
955: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
956: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
957:
1.266 mike 958: </div><div class="impl">
1.1 mike 959:
1.724 mike 960: <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 961:
962: <p>The input to the HTML parsing process consists of a stream of
963: Unicode characters, which is passed through a
964: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
965: construction</a> stage. The output is a <code>Document</code>
966: object.</p>
967:
968: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
969: support scripting</a> do not have to actually create a DOM
970: <code>Document</code> object, but the DOM tree in such cases is
971: still used as the model for the rest of the specification.</p>
972:
973: <p>In the common case, the data handled by the tokenization stage
1.159 mike 974: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
975: 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 976:
1.724 mike 977: <p><img alt="" src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png"></p>
1.1 mike 978:
979: <p id="nestedParsing">There is only one set of states for the
980: tokenizer stage and the tree construction stage, but the tree
981: construction stage is reentrant, meaning that while the tree
982: construction stage is handling one token, the tokenizer might be
983: resumed, causing further tokens to be emitted and processed before
984: the first token's processing is complete.</p>
985:
986: <div class="example">
987:
988: <p>In the following example, the tree construction stage will be
989: called upon to handle a "p" start tag token while handling the
990: "script" start tag token:</p>
991:
992: <pre>...
993: <script>
994: document.write('<p>');
995: </script>
996: ...</pre>
997:
998: </div>
999:
1000: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
1001: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
1002: pause flag</dfn>, which must be initially set to false.</p>
1003:
1.266 mike 1004: </div><div class="impl">
1.1 mike 1005:
1.724 mike 1006: <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 1007:
1008: <p>The stream of Unicode characters that comprises the input to the
1009: tokenization stage will be initially seen by the user agent as a
1010: stream of bytes (typically coming over the network or from the local
1011: file system). The bytes encode the actual characters according to a
1012: particular <em>character encoding</em>, which the user agent must
1013: use to decode the bytes into characters.</p>
1014:
1015: <p class="note">For XML documents, the algorithm user agents must
1016: use to determine the character encoding is given by the XML
1.104 mike 1017: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 1018:
1019:
1.724 mike 1020: <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 1021:
1022: <p>In some cases, it might be impractical to unambiguously determine
1023: the encoding before parsing the document. Because of this, this
1024: specification provides for a two-pass mechanism with an optional
1025: pre-scan. Implementations are allowed, as described below, to apply
1026: a simplified parsing algorithm to whatever bytes they have available
1027: before beginning to parse the document. Then, the real parser is
1028: started, using a tentative encoding derived from this pre-parse and
1029: other out-of-band metadata. If, while the document is being loaded,
1030: the user agent discovers an encoding declaration that conflicts with
1031: this information, then the parser can get reinvoked to perform a
1032: parse of the document with the real encoding.</p>
1033:
1034: <p id="documentEncoding">User agents must use the following
1035: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
1036: the character encoding to use when decoding a document in the first
1037: pass. This algorithm takes as input any out-of-band metadata
1038: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
1039: and all the bytes available so far, and returns an encoding and a
1040: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
1041: confidence is either <i>tentative</i>, <i>certain</i>, or
1042: <i>irrelevant</i>. The encoding used, and whether the confidence in
1043: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
1044: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
1045: encoding is necessary, e.g. because the parser is operating on a
1046: stream of Unicode characters and doesn't have to use an encoding at
1047: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
1048: <i>irrelevant</i>.</p>
1049:
1050: <ol><li><p>If the transport layer specifies an encoding, and it is
1051: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1052: <i>certain</i>, and abort these steps.</p></li>
1053:
1054: <li><p>The user agent may wait for more bytes of the resource to be
1055: available, either in this step or at any later step in this
1056: algorithm. For instance, a user agent might wait 500ms or 512
1057: bytes, whichever came first. In general preparsing the source to
1058: find the encoding improves performance, as it reduces the need to
1059: throw away the data structures used when parsing upon finding the
1060: encoding information. However, if the user agent delays too long to
1061: obtain data to determine the encoding, then the cost of the delay
1062: could outweigh any performance improvements from the
1063: preparse.</p></li>
1064:
1065: <li><p>For each of the rows in the following table, starting with
1066: the first one and going down, if there are as many or more bytes
1067: available than the number of bytes in the first column, and the
1068: first bytes of the file match the bytes given in the first column,
1069: then return the encoding given in the cell in the second column of
1070: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1071: <i>certain</i>, and abort these steps:</p>
1072:
1073: <!-- this table is present in several forms in this file; keep them in sync -->
1074: <table><thead><tr><th>Bytes in Hexadecimal
1075: </th><th>Encoding
1076: </th></tr></thead><tbody><!-- nobody uses this
1077: <tr>
1078: <td>00 00 FE FF
1079: <td>UTF-32BE
1080: <tr>
1081: <td>FF FE 00 00
1082: <td>UTF-32LE
1083: --><tr><td>FE FF
1084: </td><td>UTF-16BE
1085: </td></tr><tr><td>FF FE
1086: </td><td>UTF-16LE
1087: </td></tr><tr><td>EF BB BF
1088: </td><td>UTF-8
1089: <!-- nobody uses this
1090: <tr>
1091: <td>DD 73 66 73
1092: <td>UTF-EBCDIC
1093: -->
1094: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1095: (BOMs).</p></li>
1096:
1097: <li><p>Otherwise, the user agent will have to search for explicit
1098: character encoding information in the file itself. This should
1099: proceed as follows:
1100:
1101: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1102: input stream, initially pointing at the first byte. If at any
1103: point during these substeps the user agent either runs out of
1104: bytes or decides that scanning further bytes would not be
1105: efficient, then skip to the next step of the overall character
1106: encoding detection algorithm. User agents may decide that scanning
1107: <em>any</em> bytes is not efficient, in which case these substeps
1108: are entirely skipped.</p>
1109:
1110: <p>Now, repeat the following "two" steps until the algorithm
1111: aborts (either because user agent aborts, as described above, or
1112: because a character encoding is found):</p>
1113:
1114: <ol><li><p>If <var title="">position</var> points to:</p>
1115:
1116: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1117: <dd>
1118:
1119: <p>Advance the <var title="">position</var> pointer so that it
1120: points at the first 0x3E byte which is preceded by two 0x2D
1121: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1122: after the 0x3C byte that was found. (The two 0x2D bytes can be
1123: the same as the those in the '<!--' sequence.)</p>
1124:
1125: </dd>
1126:
1127: <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>
1128: <dd>
1129:
1130: <ol><li><p>Advance the <var title="">position</var> pointer so
1131: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1132: 0x2F byte (the one in sequence of characters matched
1133: above).</p></li>
1134:
1135: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1136: an attribute</a> and its value. If no attribute was
1137: sniffed, then skip this inner set of steps, and jump to the
1138: second step in the overall "two step" algorithm.</p></li>
1139:
1140: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1141: then return to step 2 in these inner steps.</p></li>
1142:
1143: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1144: the attribute's value, interpreted as a character
1145: encoding.</p></li>
1146:
1147: <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
1148: extracting an encoding from a Content-Type</a>, giving the
1149: attribute's value as the string to parse. If an encoding is
1150: returned, let <var title="">charset</var> be that
1151: encoding. Otherwise, return to step 2 in these inner
1152: steps.</p></li>
1153:
1154: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1155: change the value of <var title="">charset</var> to
1156: UTF-8.</p></li>
1157:
1158: <li><p>If <var title="">charset</var> is a supported
1159: character encoding, then return the given encoding, with
1160: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1161: <i>tentative</i>, and abort all these steps.</p></li>
1162:
1163: <li><p>Otherwise, return to step 2 in these inner
1164: steps.</p></li>
1165:
1166: </ol></dd>
1167:
1.464 mike 1168: <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 1169: <dd>
1170:
1171: <ol><li><p>Advance the <var title="">position</var> pointer so
1172: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1173: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1174: (ASCII >) byte.</p></li>
1.1 mike 1175:
1176: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1177: attribute</a> until no further attributes can be found,
1178: then jump to the second step in the overall "two step"
1179: algorithm.</p></li>
1180:
1181: </ol></dd>
1182:
1183: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1184: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1185: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1186: <dd>
1187:
1188: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1189: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1190: 0x3C byte that was found.</p>
1191:
1192: </dd>
1193:
1194: <dt>Any other byte</dt>
1195: <dd>
1196:
1197: <p>Do nothing with that byte.</p>
1198:
1199: </dd>
1200:
1201: </dl></li>
1202:
1203: <li>Move <var title="">position</var> so it points at the next
1204: byte in the input stream, and return to the first step of this
1205: "two step" algorithm.</li>
1206:
1207: </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
1208: attribute</dfn>, it means doing this:</p>
1209:
1210: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1211: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1212: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1213: substep.</p></li>
1214:
1215: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1216: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1217: one.</p></li>
1218:
1219: <li><p>Otherwise, the byte at <var title="">position</var> is the
1220: start of the attribute name. Let <var title="">attribute
1221: name</var> and <var title="">attribute value</var> be the empty
1222: string.</p></li>
1223:
1224: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1225:
1.464 mike 1226: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1227: name</var> is longer than the empty string</dt>
1228:
1229: <dd>Advance <var title="">position</var> to the next byte and
1230: jump to the step below labeled <i>value</i>.</dd>
1231:
1232: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1233: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1234:
1235: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1236:
1.464 mike 1237: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1238:
1239: <dd>Abort the "get an attribute" algorithm. The attribute's
1240: name is the value of <var title="">attribute name</var>, its
1241: value is the empty string.</dd>
1242:
1.464 mike 1243: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1244: Z)</dt>
1.1 mike 1245:
1246: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1247: name</var> (where <var title="">b</var> is the value of the
1248: byte at <var title="">position</var>).</dd>
1249:
1250: <dt>Anything else</dt>
1251:
1252: <dd>Append the Unicode character with the same code point as the
1253: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1254: bytes outside the ASCII range are handled here, since only
1255: ASCII characters can contribute to the detection of a character
1256: encoding.)</dd>
1257:
1258: </dl></li>
1259:
1260: <li><p>Advance <var title="">position</var> to the next byte and
1261: return to the previous step.</p></li>
1262:
1263: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1264: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1265: advance <var title="">position</var> to the next byte, then,
1266: repeat this step.</p></li>
1267:
1268: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1269: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1270: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1271: string.</p></li>
1272:
1273: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1274: =) byte.</p></li>
1.1 mike 1275:
1276: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1277: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1278: advance <var title="">position</var> to the next byte, then,
1279: repeat this step.</p></li>
1280:
1281: <li><p>Process the byte at <var title="">position</var> as
1282: follows:</p>
1283:
1.464 mike 1284: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1285:
1286: <dd>
1287:
1288: <ol><li>Let <var title="">b</var> be the value of the byte at
1289: <var title="">position</var>.</li>
1290:
1291: <li>Advance <var title="">position</var> to the next
1292: byte.</li>
1293:
1294: <li>If the value of the byte at <var title="">position</var>
1295: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1296: an attribute" algorithm. The attribute's name is the value of
1297: <var title="">attribute name</var>, and its value is the
1298: value of <var title="">attribute value</var>.</li>
1299:
1.464 mike 1300: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1301: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1302: than the value of the byte at <var title="">position</var>.</li>
1303:
1304: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1305: the value of the byte at <var title="">position</var>.</li>
1306:
1307: <li>Return to the second step in these substeps.</li>
1308:
1309: </ol></dd>
1310:
1.464 mike 1311: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1312:
1313: <dd>Abort the "get an attribute" algorithm. The attribute's
1314: name is the value of <var title="">attribute name</var>, its
1315: value is the empty string.</dd>
1316:
1317:
1.464 mike 1318: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1319: Z)</dt>
1.1 mike 1320:
1321: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1322: value</var> (where <var title="">b</var> is the value of the
1323: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1324:
1325: <dt>Anything else</dt>
1326:
1327: <dd>Append the Unicode character with the same code point as the
1328: 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>
1329:
1330: </dl></li>
1331:
1332: <li><p>Process the byte at <var title="">position</var> as
1333: follows:</p>
1334:
1335: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1336: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1337: >)</dt>
1.1 mike 1338:
1339: <dd>Abort the "get an attribute" algorithm. The attribute's
1340: name is the value of <var title="">attribute name</var> and its
1341: value is the value of <var title="">attribute value</var>.</dd>
1342:
1.464 mike 1343: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1344: Z)</dt>
1.1 mike 1345:
1346: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1347: value</var> (where <var title="">b</var> is the value of the
1348: byte at <var title="">position</var>).</dd>
1349:
1350: <dt>Anything else</dt>
1351:
1352: <dd>Append the Unicode character with the same code point as the
1353: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1354:
1355: </dl></li>
1356:
1357: <li><p>Advance <var title="">position</var> to the next byte and
1358: return to the previous step.</p></li>
1359:
1360: </ol><p>For the sake of interoperability, user agents should not use a
1361: pre-scan algorithm that returns different results than the one
1362: described above. (But, if you do, please at least let us know, so
1363: that we can improve this algorithm and benefit everyone...)</p>
1364:
1365: </li>
1366:
1367: <li><p>If the user agent has information on the likely encoding for
1368: this page, e.g. based on the encoding of the page when it was last
1369: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1370: <i>tentative</i>, and abort these steps.</p></li>
1371:
1.322 mike 1372: <li>
1373:
1374: <p>The user agent may attempt to autodetect the character encoding
1375: from applying frequency analysis or other algorithms to the data
1.568 mike 1376: stream. Such algorithms may use information about the resource
1377: other than the resource's contents, including the address of the
1378: resource. If autodetection succeeds in determining a character
1.322 mike 1379: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1380: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1381:
1382: <p class="note">The UTF-8 encoding has a highly detectable bit
1383: pattern. Documents that contain bytes with values greater than
1384: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1385: while documents with byte sequences that do not match it are very
1386: likely not. User-agents are therefore encouraged to search for
1.485 mike 1387: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1388:
1389: </li>
1.1 mike 1390:
1.501 mike 1391: <li>
1392:
1393: <p>Otherwise, return an implementation-defined or user-specified
1394: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1395: <i>tentative</i>.</p>
1396:
1397: <p>In controlled environments or in environments where the
1398: encoding of documents can be prescribed (for example, for user
1399: agents intended for dedicated use in new networks), the
1400: comprehensive <code title="">UTF-8</code> encoding is
1401: suggested.</p>
1402:
1403: <p>In other environments, the default encoding is typically
1404: dependent on the user's locale (an approximation of the languages,
1405: and thus typically encodings, of the pages that the user is likely
1406: to frequent). The following table gives suggested defaults based
1.504 mike 1407: on the user's locale, for compatibility with legacy
1408: content. Locales are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1409:
1410: <!-- based on mozilla 1.9.1 localizations:
1411: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1412:
1.504 mike 1413: <table><thead><tr><th>Locale language
1.501 mike 1414: </th><th>Suggested default encoding
1415: </th></tr></thead><tbody><tr><td>ar
1416: </td><td>UTF-8
1417:
1418: </td></tr><tr><td>be
1419: </td><td>ISO-8859-5
1420:
1421: </td></tr><tr><td>bg
1422: </td><td>windows-1251
1423:
1424: </td></tr><tr><td>cs<!-- -CZ -->
1425: </td><td>ISO-8859-2
1426:
1427: </td></tr><tr><td>cy
1428: </td><td>UTF-8
1429:
1430: </td></tr><tr><td>fa<!-- -IR -->
1431: </td><td>UTF-8
1432:
1433: </td></tr><tr><td>he<!-- -IL -->
1434: </td><td>windows-1255
1435:
1436: </td></tr><tr><td>hr
1437: </td><td>UTF-8
1438:
1439: </td></tr><tr><td>hu<!-- -HU -->
1440: </td><td>ISO-8859-2
1441:
1442: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1443: </td><td>windows-31J <!-- Shift_JIS -->
1444:
1445: </td></tr><tr><td>kk
1446: </td><td>UTF-8
1447:
1448: </td></tr><tr><td>ko<!-- -KR -->
1449: </td><td>windows-949 <!-- EUC-KR -->
1450:
1451: </td></tr><tr><td>ku
1452: </td><td>windows-1254 <!-- ISO-8859-9 -->
1453:
1454: </td></tr><tr><td>lt
1455: </td><td>windows-1257
1456:
1457: </td></tr><tr><td>lv<!-- -LV -->
1458: </td><td>ISO-8859-13
1459:
1460: </td></tr><tr><td>mk<!-- -MK -->
1461: </td><td>UTF-8
1462:
1463: </td></tr><tr><td>or
1464: </td><td>UTF-8
1465:
1466: </td></tr><tr><td>pl<!-- -PL -->
1467: </td><td>ISO-8859-2
1468:
1469: </td></tr><tr><td>ro
1470: </td><td>UTF-8
1471:
1472: </td></tr><tr><td>ru
1473: </td><td>windows-1251
1474:
1475: </td></tr><tr><td>sk
1476: </td><td>windows-1250
1477:
1478: </td></tr><tr><td>sl
1479: </td><td>ISO-8859-2
1480:
1481: </td></tr><tr><td>sr
1482: </td><td>UTF-8
1483:
1484: </td></tr><tr><td>th
1485: </td><td>windows-874 <!-- TIS-620 -->
1486:
1487: </td></tr><tr><td>tr<!-- -TR -->
1488: </td><td>windows-1254 <!-- ISO-8859-9 -->
1489:
1.503 mike 1490: </td></tr><tr><td>uk
1.501 mike 1491: </td><td>windows-1251
1492:
1493: </td></tr><tr><td>vi
1494: </td><td>UTF-8
1495:
1496: </td></tr><tr><td>zh-CN
1497: </td><td>GB18030
1498:
1499: </td></tr><tr><td>zh-TW
1500: </td><td>Big5
1501:
1502: </td></tr><tr><td>All other locales
1503: </td><td>windows-1252
1504:
1505: </td></tr></tbody></table></li>
1.1 mike 1506:
1507: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1508: be set to the value returned from this algorithm, at the same time
1509: as the user agent uses the returned value to select the decoder to
1510: use for the input stream.</p>
1511:
1.582 mike 1512: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1513: of the HTTP specification, which requires that the encoding be
1514: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1.647 mike 1515: encoding declaration</a> to the contrary, and of RFC 2046,
1.582 mike 1516: which requires that the encoding be assumed to be US-ASCII in the
1517: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1518: contrary. This specification's third approach is motivated by a
1519: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1520:
1.1 mike 1521:
1.724 mike 1522: <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 1523:
1.237 mike 1524: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1525: encodings, but may support more.</p>
1526:
1527: <p class="note">It is not unusual for Web browsers to support dozens
1528: if not upwards of a hundred distinct character encodings.</p>
1529:
1.365 mike 1530: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1531: every character encoding they support, and should support all the
1532: IANA-registered names and aliases of every character encoding they
1533: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1534:
1535: <p>When comparing a string specifying a character encoding with the
1536: name or alias of a character encoding to determine if they are
1537: 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
1538: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1539: case-insensitive</a> manner.</p>
1540:
1.539 mike 1541: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1542: first column of the following table to either convert content to
1543: Unicode characters or convert Unicode characters to bytes, it must
1544: instead use the encoding given in the cell in the second column of
1545: the same row. When a byte or sequence of bytes is treated
1546: differently due to this encoding aliasing, it is said to have been
1547: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1548:
1549: <table><caption>Character encoding overrides</caption>
1550: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1551: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1552: <a href="references.html#refsEUCKR">[EUCKR]</a>
1553: <a href="references.html#refsWIN949">[WIN949]</a>
1554: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1555: <a href="references.html#refsRFC1345">[RFC1345]</a>
1556: <a href="references.html#refsGBK">[GBK]</a>
1557: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1558: <a href="references.html#refsRFC1345">[RFC1345]</a>
1559: <a href="references.html#refsGBK">[GBK]</a>
1560: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1561: <a href="references.html#refsRFC1345">[RFC1345]</a>
1562: <a href="references.html#refsWIN1252">[WIN1252]</a>
1563: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1564: <a href="references.html#refsRFC1345">[RFC1345]</a>
1565: <a href="references.html#refsWIN1254">[WIN1254]</a>
1566: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1567: <a href="references.html#refsISO885911">[ISO885911]</a>
1568: <a href="references.html#refsWIN874">[WIN874]</a>
1569: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1570: <a href="references.html#refsRFC1345">[RFC1345]</a>
1571: <a href="references.html#refsWIN949">[WIN949]</a>
1572: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1573: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1574: <a href="references.html#refsWIN31J">[WIN31J]</a>
1575: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1576: <a href="references.html#refsTIS620">[TIS620]</a>
1577: <a href="references.html#refsWIN874">[WIN874]</a>
1578: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1579: <a href="references.html#refsRFC1345">[RFC1345]</a>
1580: <a href="references.html#refsWIN1252">[WIN1252]</a>
1581: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1582: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1583: violation</a> of the W3C Character Model specification, motivated
1584: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1585:
1586: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1587: been found, user agents must default to UTF-16LE.</p>
1588:
1589: <p class="note">The requirement to default UTF-16 to LE rather than
1590: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1591: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1592:
1593: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1594: 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>
1595:
1596: <p>Support for encodings based on EBCDIC is not recommended. This
1597: encoding is rarely used for publicly-facing Web content.</p>
1598:
1599: <p>Support for UTF-32 is not recommended. This encoding is rarely
1600: used, and frequently implemented incorrectly.</p>
1601:
1602: <p class="note">This specification does not make any attempt to
1603: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1604: and use of these encodings can thus lead to unexpected behavior in
1605: implementations of this specification.</p>
1606:
1607:
1608:
1.724 mike 1609: <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 1610:
1611: <p>Given an encoding, the bytes in the input stream must be
1612: converted to Unicode characters for the tokenizer, as described by
1613: the rules for that encoding, except that the leading U+FEFF BYTE
1614: ORDER MARK character, if any, must not be stripped by the encoding
1615: layer (it is stripped by the rule below).</p> <!-- this is to
1616: prevent two leading BOMs from being both stripped, once by the
1617: decoder, and once by the parser -->
1618:
1619: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1620: could not be converted to Unicode code points must be converted to
1621: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1622:
1623: <p class="note">Bytes or sequences of bytes in the original byte
1624: stream that did not conform to the encoding specification
1625: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1626: errors that conformance checkers are expected to report.</p>
1627:
1.438 mike 1628: <p>Any byte or sequence of bytes in the original byte stream that is
1629: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1630: error</a>.</p>
1631:
1632: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1633: any are present.</p>
1634:
1.300 mike 1635: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1636: character regardless of whether that character was used to determine
1637: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1638: motivated by a desire to increase the resilience of user agents in
1639: the face of naïve transcoders.</p>
1640:
1.316 mike 1641: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1642: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1643: them to suddenly turn into codepoints when they go through a UTF-16
1644: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1645: CHARACTERs. Any occurrences of such characters and code points are
1646: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1647:
1648: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1649: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1650: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1651: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1652: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1653: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1654: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1655: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1656: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1657: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1658: errors</a>. These are all control characters or permanently
1659: undefined Unicode characters (noncharacters).</p>
1.1 mike 1660:
1661: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1662: characters are treated specially. Any CR characters that are
1663: followed by LF characters must be removed, and any CR characters not
1664: followed by LF characters must be converted to LF characters. Thus,
1665: newlines in HTML DOMs are represented by LF characters, and there
1666: are never any CR characters in the input to the
1667: <a href="#tokenization">tokenization</a> stage.</p>
1668:
1669: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1670: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1671: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1672: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1673: to have been <i><a href="#consumed">consumed</a></i>.</p>
1674:
1675: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1676: character or just before the end of the input stream) where content
1.159 mike 1677: 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 1678: inserted. The insertion point is relative to the position of the
1679: character immediately after it, it is not an absolute offset into
1680: the input stream. Initially, the insertion point is
1.10 mike 1681: undefined.</p>
1.1 mike 1682:
1683: <p>The "EOF" character in the tables below is a conceptual character
1684: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1685: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1686: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1687: 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 1688: consumed. Otherwise, the "EOF" character is not a real character in
1689: the stream, but rather the lack of any further characters.</p>
1690:
1691:
1.724 mike 1692: <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 1693:
1694: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1695: encoding</dfn>, it must run the following steps. This might happen
1696: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1697: failed to find an encoding, or if it found an encoding that was not
1698: the actual encoding of the file.</p>
1699:
1700: <ol><li>If the new encoding is identical or equivalent to the encoding
1701: that is already being used to interpret the input stream, then set
1702: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1703: <i>certain</i> and abort these steps. This happens when the
1704: encoding information found in the file matches what the
1705: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1706: encoding, and in the second pass through the parser if the first
1707: pass found that the encoding sniffing algorithm described in the
1708: earlier section failed to find the right encoding.</li>
1709:
1710: <li>If the encoding that is already being used to interpret the
1711: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1712: <i>certain</i> and abort these steps. The new encoding is ignored;
1713: if it was anything but the same encoding, then it would be clearly
1714: incorrect.</li>
1715:
1716: <li>If the new encoding is a UTF-16 encoding, change it to
1717: UTF-8.</li>
1718:
1719: <li>If all the bytes up to the last byte converted by the current
1720: decoder have the same Unicode interpretations in both the current
1721: encoding and the new encoding, and if the user agent supports
1722: changing the converter on the fly, then the user agent may change
1723: to the new converter for the encoding on the fly. Set the
1724: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1725: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1726: <i>certain</i>, and abort these steps.</li>
1727:
1728: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1729: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1730: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1731: sniffing algorithm</a> and instead just set the encoding to the
1732: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1733: <i>certain</i>. Whenever possible, this should be done without
1734: actually contacting the network layer (the bytes should be
1735: re-parsed from memory), even if, e.g., the document is marked as
1736: not being cacheable. If this is not possible and contacting the
1737: network layer would involve repeating a request that uses a method
1738: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1739: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1740: <i>certain</i> and ignore the new encoding. The resource will be
1741: misinterpreted. User agents may notify the user of the situation,
1742: to aid in application development.</li>
1743:
1.266 mike 1744: </ol></div><div class="impl">
1745:
1.724 mike 1746: <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 1747:
1.724 mike 1748: <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 1749:
1750: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1751: the primary operation of the tree construction stage.</p>
1752:
1753: <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
1754: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1755: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1756: "<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 1757: "<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 1758: "<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>",
1759: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1760: "<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
1761: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1762: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1763: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1764: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1765: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1766: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1767: frameset</a>" during the course of the parsing, as described in
1768: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1769: how tokens are processed and whether CDATA sections are
1770: supported.</p>
1771:
1772: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1773: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1774: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1775: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1776: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1777: "<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
1778: that the other modes defer to them at various times. When the
1779: algorithm below says that the user agent is to do something
1780: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1781: mode", where <var title="">m</var> is one of these modes, the user
1782: agent must use the rules described under the <var title="">m</var>
1783: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1784: <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>
1785: to a new value.</p>
1786:
1787: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1788: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1789: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1790: is also set. This is the insertion mode to which the tree
1791: construction stage will return.</p>
1.1 mike 1792:
1793: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1794: mode: in foreign content">in foreign content</a>", the
1795: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1796: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1797: foreign content">in foreign content</a>" mode to handle HTML
1798: (i.e. not foreign) content.</p>
1799:
1800: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1801: mode appropriately</dfn>, it means the UA must follow these
1802: steps:</p>
1803:
1804: <ol><li>Let <var title="">last</var> be false.</li>
1805:
1.604 mike 1806: <li>Let <var title="">foreign</var> be false.</li>
1807:
1.1 mike 1808: <li>Let <var title="">node</var> be the last node in the
1809: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1810:
1.604 mike 1811: <li><i>Loop</i>: If <var title="">node</var> is the first node in
1812: the stack of open elements, then set <var title="">last</var> to
1813: 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 1814:
1815: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1.604 mike 1816: 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
1817: step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1818:
1819: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1820: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1821: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1.604 mike 1822: mode: in cell">in cell</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1823:
1824: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1825: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1.604 mike 1826: mode: in row">in row</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1827:
1828: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1829: <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
1830: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1.604 mike 1831: table body">in table body</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1832:
1833: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1.604 mike 1834: 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
1835: the step marked <i title="">end</i>.</li>
1.1 mike 1836:
1837: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1838: 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 1839: jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1840: case</a>)</li>
1.1 mike 1841:
1842: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1.604 mike 1843: 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
1844: step marked <i title="">end</i>.</li>
1.1 mike 1845:
1.159 mike 1846: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.604 mike 1847: 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
1848: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1849: case</a>)</li> <!-- This is only here for now in case people
1850: think that the spec accidentally omitted it and try to "fix"
1851: it. Note that noscript-in-head is also handled this way. This is
1852: all intentional. The only thing it doesn't handle is the
1853: scripting-disabled fragment parsing case for a <head> element
1854: containing a <noscript> which itself contains something other than
1855: a <link> or a <style> element; you'd expect that to break out of
1856: the <noscript> but it doesn't. This is an edge case that doesn't
1857: affect the spec, since the algorithm for fragment parsing is only
1858: used for innerHTML/outerHTML/insertAdjacentHTML(), where we know
1859: scripting is enabled. -->
1.1 mike 1860:
1.159 mike 1861: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.604 mike 1862: 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
1863: step marked <i title="">end</i>.</li>
1.1 mike 1864:
1.5 mike 1865: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.604 mike 1866: 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
1867: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1868: case</a>)</li>
1.1 mike 1869:
1.159 mike 1870: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1871: then <!--: if the <span><code title="">head</code> element
1872: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1873: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1874: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1875: to "<span title="insertion mode: after head">after head</span>".-->
1.604 mike 1876: Then, <!-- in either case, --> jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li> <!-- if the
1877: head element pointer can ever be non-null when we're going through
1878: these steps, we'll need to uncomment out the commented-out bits -->
1879:
1.724 mike 1880: <li>If <var title="">node</var> is an element from the <a href="infrastructure.html#mathml-namespace">MathML
1881: namespace</a> or the <a href="infrastructure.html#svg-namespace">SVG namespace</a>, then set the
1.604 mike 1882: <var title="">foreign</var> flag to true.</li>
1.1 mike 1883:
1884: <li>If <var title="">last</var> is true, then switch the
1885: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1.604 mike 1886: 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 1887:
1888: <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
1889: elements</a>.</li>
1890:
1.604 mike 1891: <li>Return to the step marked <i>loop</i>.</li>
1892:
1893: <li><i>End</i>: If <var title="">foreign</var> is true, switch the
1894: <a href="#secondary-insertion-mode">secondary insertion mode</a> to whatever the
1895: <a href="#insertion-mode">insertion mode</a> is set to, and switch the
1896: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1897: foreign content">in foreign content</a>".</li>
1.1 mike 1898:
1.724 mike 1899: </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 1900:
1901: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1902: stack grows downwards; the topmost node on the stack is the first
1903: one added to the stack, and the bottommost node of the stack is the
1904: most recently added node in the stack (notwithstanding when the
1905: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1906:
1907: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1908: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1909: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1910: stack.</p>
1911:
1912: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1913: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1914: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1915: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1916: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1917: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1918:
1.159 mike 1919: <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 1920: node of the stack. It never gets popped off the stack.</p>
1921:
1922: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1923: stack.</p>
1924:
1925: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1926: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1927: 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
1928: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1929: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1930: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1931:
1932: <p>Elements in the stack fall into the following categories:</p>
1933:
1934: <dl><dt><dfn id="special">Special</dfn></dt>
1935:
1936: <dd><p>The following HTML elements have varying levels of special
1937: 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>,
1938: <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 1939: <code><a href="obsolete.html#basefont">basefont</a></code>, <code><a href="obsolete.html#bgsound">bgsound</a></code>,
1.159 mike 1940: <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 1941: <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 1942: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID--><code>datagrid</code>,
1.422 mike 1943: <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>,
1944: <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>,
1945: <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>,
1946: <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>,
1947: <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>,
1948: <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>,
1949: <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>,
1950: <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>,
1951: (commented out because this isn't an element that can end up on the
1952: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
1953: <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>,
1954: <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>,
1955: <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>,
1956: <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>,
1957: <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>,
1958: <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 1959: <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>,
1960: <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>,
1961: <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 1962: <code><a href="obsolete.html#wbr">wbr</a></code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 1963:
1964: <dt><dfn id="scoping">Scoping</dfn></dt>
1965: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
1966: an element in scope">scopes</a> for various parts of the
1.5 mike 1967: 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 1968: <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>,
1969: <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 1970: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
1971:
1972: <dt><dfn id="formatting">Formatting</dfn></dt>
1973: <dd><p>The following HTML elements are those that end up in the
1974: <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 1975: <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>,
1976: <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 1977: <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 1978: <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
1979: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 1980:
1981: <dt><dfn id="phrasing">Phrasing</dfn></dt>
1982: <dd><p>All other elements found while parsing an HTML
1983: document.</p></dd>
1984:
1.234 mike 1985: </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
1986: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
1987: match state:</p>
1.1 mike 1988:
1989: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
1990: node</a> (the bottommost node of the stack).</p></li>
1991:
1992: <li><p>If <var title="">node</var> is the target node, terminate in
1993: a match state.</p></li>
1994:
1.234 mike 1995: <li><p>Otherwise, if <var title="">node</var> is one of the element
1996: types in <var title="">list</var>, terminate in a failure
1997: state.</p></li>
1.1 mike 1998:
1999: <li><p>Otherwise, set <var title="">node</var> to the previous
2000: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
2001: 2. (This will never fail, since the loop will always terminate in
2002: the previous step if the top of the stack — an
1.159 mike 2003: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 2004:
1.234 mike 2005: </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
2006: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
2007: of the following element types:</p>
2008:
2009: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
2010: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
2011: <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.) -->
2012: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2013: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
2014: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
2015: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
2016: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
2017: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
2018: <li><code title="">foreignObject</code> in the SVG namespace</li>
2019: </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
2020: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2021: scope</a> consisting of the following element types:</p>
2022:
2023: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
2024: in scope</a></i> algorithm.</li>
2025: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
2026: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
2027: </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
2028: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2029: scope</a> consisting of the following element types:</p>
2030:
2031: <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.) -->
2032: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2033: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 2034: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
2035: or removed from, the <code>Document</code> tree. In particular, the
2036: stack is not changed in this situation. This can cause, amongst
2037: other strange effects, content to be appended to nodes that are no
2038: longer in the DOM.</p>
2039:
2040: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
2041: the stack is manipulated in a random-access fashion.</p>
2042:
2043:
1.724 mike 2044: <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 2045:
2046: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
2047: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
2048:
2049: <p>The list contains elements in the <a href="#formatting">formatting</a>
2050: category, and scope markers. The scope markers are inserted when
1.159 mike 2051: 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 2052: elements, marquees, table cells, and table captions, and are used to
1.5 mike 2053: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 2054: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 2055: tables.</p>
2056:
2057: <p class="note">The scope markers are unrelated to the concept of an
2058: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
2059: scope</a>.</p>
2060:
2061: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
2062: elements</a> is associated with the token for which it was
2063: created, so that further elements can be created for that token if
2064: necessary.</p>
2065:
2066: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
2067: active formatting elements</dfn>, the UA must perform the following
2068: steps:</p>
2069:
2070: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
2071: elements</a>, then there is nothing to reconstruct; stop this
2072: algorithm.</li>
2073:
2074: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2075: active formatting elements</a> is a marker, or if it is an
2076: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2077: there is nothing to reconstruct; stop this algorithm.</li>
2078:
2079: <li>Let <var title="">entry</var> be the last (most recently added)
2080: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2081: elements</a>.</li>
2082:
2083: <li>If there are no entries before <var title="">entry</var> in the
2084: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2085: 8.</li>
2086:
2087: <li>Let <var title="">entry</var> be the entry one earlier than
2088: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2089: elements</a>.</li>
2090:
2091: <li>If <var title="">entry</var> is neither a marker nor an element
2092: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2093: 4.</li>
2094:
2095: <li>Let <var title="">entry</var> be the element one later than
2096: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2097: elements</a>.</li>
2098:
2099: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2100: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2101:
2102: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2103: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2104: elements</a> so that it is the new <a href="#current-node">current
2105: node</a>.</li>
2106:
2107: <li>Replace the entry for <var title="">entry</var> in the list
2108: with an entry for <var title="">new element</var>.</li>
2109:
2110: <li>If the entry for <var title="">new element</var> in the
2111: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2112: entry in the list, return to step 7.</li>
2113:
2114: </ol><p>This has the effect of reopening all the formatting elements that
2115: were opened in the current body, cell, or caption (whichever is
2116: youngest) that haven't been explicitly closed.</p>
2117:
2118: <p class="note">The way this specification is written, the
2119: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2120: elements in chronological order with the least recently added
2121: element first and the most recently added element last (except for
2122: while steps 8 to 11 of the above algorithm are being executed, of
2123: course).</p>
2124:
2125: <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
2126: active formatting elements up to the last marker</dfn>, the UA must
2127: perform the following steps:</p>
2128:
2129: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2130: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2131:
2132: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2133: formatting elements</a>.</li>
2134:
2135: <li>If <var title="">entry</var> was a marker, then stop the
2136: algorithm at this point. The list has been cleared up to the last
2137: marker.</li>
2138:
2139: <li>Go to step 1.</li>
2140:
1.724 mike 2141: </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 2142:
2143: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2144: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2145: pointer</dfn> are both null.</p>
2146:
1.159 mike 2147: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2148: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2149: element pointer</a> gets set to point to this node.</p>
2150:
2151: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2152: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2153: whose end tag has not yet been seen. It is used to make form
2154: controls associate with forms in the face of dramatically bad
2155: markup, for historical reasons.</p>
2156:
2157:
1.724 mike 2158: <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 2159:
2160: <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
2161: <code>Document</code> with which the parser is associated when the
2162: parser was created, and "disabled" otherwise.</p>
2163:
2164: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2165: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2166: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2167: don't execute in that case.</p>
2168:
2169: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2170: created. It is set to "not ok" after certain tokens are seen.</p>
2171:
1.266 mike 2172: </div><div class="impl">
1.1 mike 2173:
1.724 mike 2174: <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 2175:
2176: <p>Implementations must act as if they used the following state
2177: machine to tokenize HTML. The state machine must start in the
2178: <a href="#data-state">data state</a>. Most states consume a single character,
2179: which may have various side-effects, and either switches the state
2180: machine to a new state to <em>reconsume</em> the same character, or
2181: switches it to a new state (to consume the next character), or
2182: repeats the same state (to consume the next character). Some states
2183: have more complicated behavior and can consume several characters
1.541 mike 2184: before switching to another state. In some cases, the tokenizer
2185: state is also changed by the tree construction stage.</p>
1.1 mike 2186:
1.541 mike 2187: <p>The exact behavior of certain states depends on the
2188: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2189: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2190: buffer</var></dfn> to track progress.</p>
1.1 mike 2191:
2192: <p>The output of the tokenization step is a series of zero or more
2193: of the following tokens: DOCTYPE, start tag, end tag, comment,
2194: character, end-of-file. DOCTYPE tokens have a name, a public
2195: identifier, a system identifier, and a <i>force-quirks
2196: flag</i>. When a DOCTYPE token is created, its name, public
2197: identifier, and system identifier must be marked as missing (which
2198: is a distinct state from the empty string), and the <i>force-quirks
2199: flag</i> must be set to <i>off</i> (its other state is
2200: <i>on</i>). Start and end tag tokens have a tag name, a
2201: <i>self-closing flag</i>, and a list of attributes, each of which
2202: has a name and a value. When a start or end tag token is created,
2203: its <i>self-closing flag</i> must be unset (its other state is that
2204: it be set), and its attributes list must be empty. Comment and
2205: character tokens have data.</p>
2206:
2207: <p>When a token is emitted, it must immediately be handled by the
2208: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2209: can affect the state of the tokenization stage, and can insert
2210: additional characters into the stream. (For example, the
1.1 mike 2211: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2212: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2213: characters into the stream being tokenized.)</p>
2214:
2215: <p>When a start tag token is emitted with its <i>self-closing
2216: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2217: self-closing flag">acknowledged</dfn> when it is processed by the
2218: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2219:
2220: <p>When an end tag token is emitted with attributes, that is a
2221: <a href="#parse-error">parse error</a>.</p>
2222:
2223: <p>When an end tag token is emitted with its <i>self-closing
2224: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2225:
1.541 mike 2226: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2227: tag name matches the tag name of the last start tag to have been
2228: emitted from this tokenizer, if any. If no start tag has been
2229: emitted from this tokenizer, then no end tag token is
2230: appropriate.</p>
2231:
1.1 mike 2232: <p>Before each step of the tokenizer, the user agent must first
2233: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2234: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2235: tokenizer, yielding control back to the caller.</p>
1.1 mike 2236:
2237: <p>The tokenizer state machine consists of the states defined in the
2238: following subsections.</p>
2239:
1.541 mike 2240:
1.333 mike 2241: <!-- Order of the lists below is supposed to be non-error then
2242: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2243:
1.541 mike 2244:
1.724 mike 2245: <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 2246:
2247: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2248:
2249: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2250: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2251: state</a>.</dd>
1.1 mike 2252:
1.541 mike 2253: <dt>U+003C LESS-THAN SIGN (<)</dt>
2254: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2255:
2256: <dt>EOF</dt>
2257: <dd>Emit an end-of-file token.</dd>
2258:
2259: <dt>Anything else</dt>
2260: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2261: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2262:
1.724 mike 2263: </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 2264:
2265: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2266: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2267:
2268: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2269: token.</p>
2270:
2271: <p>Otherwise, emit the character token that was returned.</p>
2272:
2273: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
2274:
2275:
1.724 mike 2276: <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 2277:
1.541 mike 2278: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2279:
1.541 mike 2280: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.618 mike 2281: <dd>Switch to the <a href="#character-reference-in-rcdata-state">character reference in RCDATA
1.541 mike 2282: state</a>.</dd>
1.1 mike 2283:
2284: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2285: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2286:
2287: <dt>EOF</dt>
2288: <dd>Emit an end-of-file token.</dd>
1.1 mike 2289:
1.541 mike 2290: <dt>Anything else</dt>
2291: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2292: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2293:
1.724 mike 2294: </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 2295:
2296: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2297: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2298:
2299: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2300: token.</p>
2301:
2302: <p>Otherwise, emit the character token that was returned.</p>
2303:
2304: <p>Finally, switch to the <a href="#rcdata-state">RCDATA state</a>.</p>
2305:
2306:
1.724 mike 2307: <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 2308:
1.541 mike 2309: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2310:
1.541 mike 2311: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2312: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2313:
2314: <dt>EOF</dt>
2315: <dd>Emit an end-of-file token.</dd>
2316:
2317: <dt>Anything else</dt>
1.541 mike 2318: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2319: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2320:
1.724 mike 2321: </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 2322:
1.541 mike 2323: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2324:
1.541 mike 2325: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2326: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2327:
1.541 mike 2328: <dt>EOF</dt>
2329: <dd>Emit an end-of-file token.</dd>
1.1 mike 2330:
1.541 mike 2331: <dt>Anything else</dt>
2332: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2333: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2334:
1.724 mike 2335: </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 2336:
1.541 mike 2337: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2338:
1.541 mike 2339: <dl class="switch"><dt>EOF</dt>
2340: <dd>Emit an end-of-file token.</dd>
1.1 mike 2341:
1.541 mike 2342: <dt>Anything else</dt>
2343: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2344: token. Stay in the <a href="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2345:
1.724 mike 2346: </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 2347:
1.541 mike 2348: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2349:
1.541 mike 2350: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2351: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2352:
1.541 mike 2353: <dt>U+002F SOLIDUS (/)</dt>
2354: <dd>Switch to the <a href="#close-tag-open-state">close tag open state</a>.</dd>
1.1 mike 2355:
1.541 mike 2356: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2357: <dd>Create a new start tag token, set its tag name to the
2358: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2359: character's code point), then switch to the <a href="#tag-name-state">tag name
2360: state</a>. (Don't emit the token yet; further details will
2361: be filled in before it is emitted.)</dd>
1.1 mike 2362:
1.541 mike 2363: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2364: <dd>Create a new start tag token, set its tag name to the
2365: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2366: name state</a>. (Don't emit the token yet; further details will
2367: be filled in before it is emitted.)</dd>
1.1 mike 2368:
1.541 mike 2369: <dt>U+003F QUESTION MARK (?)</dt>
2370: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2371: comment state</a>.</dd>
1.1 mike 2372:
1.541 mike 2373: <dt>Anything else</dt>
2374: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2375: character token and reconsume the <a href="#current-input-character">current input
2376: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2377:
1.724 mike 2378: </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 2379:
1.541 mike 2380: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2381:
2382: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2383: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2384: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2385: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2386: state</a>. (Don't emit the token yet; further details will be
2387: filled in before it is emitted.)</dd>
2388:
2389: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2390: <dd>Create a new end tag token, set its tag name to the
2391: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2392: name state</a>. (Don't emit the token yet; further details will
2393: be filled in before it is emitted.)</dd>
1.1 mike 2394:
2395: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2396: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2397: state</a>.</dd>
2398:
2399: <dt>EOF</dt>
2400: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2401: character token and a U+002F SOLIDUS character token. Reconsume
2402: the EOF character in the <a href="#data-state">data state</a>.</dd>
2403:
2404: <dt>Anything else</dt>
2405: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2406: comment state</a>.</dd>
2407:
1.724 mike 2408: </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 2409:
2410: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2411:
2412: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2413: <dt>U+000A LINE FEED (LF)</dt>
2414: <dt>U+000C FORM FEED (FF)</dt>
2415: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2416: <dt>U+0020 SPACE</dt>
2417: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2418:
2419: <dt>U+002F SOLIDUS (/)</dt>
2420: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2421:
2422: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2423: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2424: state</a>.</dd>
2425:
2426: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2427: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2428: character</a> (add 0x0020 to the character's code point) to the
2429: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2430: state</a>.</dd>
2431:
2432: <dt>EOF</dt>
2433: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2434: <a href="#data-state">data state</a>.</dd>
2435:
2436: <dt>Anything else</dt>
2437: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2438: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2439:
1.724 mike 2440: </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 2441: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2442:
2443: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2444:
2445: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2446: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2447: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2448:
2449: <dt>Anything else</dt>
2450: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2451: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2452: state</a>.</dd>
2453:
1.724 mike 2454: </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 2455: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2456:
2457: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2458:
2459: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2460: <dd>Create a new end tag token, and set its tag name to the
2461: lowercase version of the <a href="#current-input-character">current input character</a> (add
2462: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2463: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2464: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2465: the token yet; further details will be filled in before it is
2466: emitted.)</dd>
2467:
2468: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2469: <dd>Create a new end tag token, and set its tag name to the
2470: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2471: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2472: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2473: the token yet; further details will be filled in before it is
2474: emitted.)</dd>
2475:
2476: <dt>Anything else</dt>
2477: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2478: character token, and reconsume the <a href="#current-input-character">current input
2479: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2480:
1.724 mike 2481: </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 2482: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2483:
2484: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2485:
2486: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2487: <dt>U+000A LINE FEED (LF)</dt>
2488: <dt>U+000C FORM FEED (FF)</dt>
2489: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2490: <dt>U+0020 SPACE</dt>
2491: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2492: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2493: state</a>. Otherwise, treat it as per the "anything else" entry
2494: below.</dd>
2495:
2496: <dt>U+002F SOLIDUS (/)</dt>
2497: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2498: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2499: state</a>. Otherwise, treat it as per the "anything else" entry
2500: below.</dd>
2501:
2502: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2503: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2504: token</a>, then emit the current tag token and switch to the
2505: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2506: else" entry below.</dd>
2507:
2508: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2509: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2510: character</a> (add 0x0020 to the character's code point) to the
2511: current tag token's tag name. Append the <a href="#current-input-character">current input
2512: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2513: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2514:
2515: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2516: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2517: tag token's tag name. Append the <a href="#current-input-character">current input
2518: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2519: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2520:
2521: <dt>Anything else</dt>
2522: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2523: character token, a character token for each of the characters in
2524: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2525: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2526: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2527:
1.724 mike 2528: </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 2529: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2530:
2531: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2532:
2533: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2534: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2535: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2536:
2537: <dt>Anything else</dt>
2538: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2539: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2540: state</a>.</dd>
2541:
1.724 mike 2542: </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 2543: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2544:
2545: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2546:
2547: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2548: <dd>Create a new end tag token, and set its tag name to the
2549: lowercase version of the <a href="#current-input-character">current input character</a> (add
2550: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2551: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2552: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2553: the token yet; further details will be filled in before it is
2554: emitted.)</dd>
2555:
2556: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2557: <dd>Create a new end tag token, and set its tag name to the
2558: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2559: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2560: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2561: the token yet; further details will be filled in before it is
2562: emitted.)</dd>
2563:
2564: <dt>Anything else</dt>
2565: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2566: character token, and reconsume the <a href="#current-input-character">current input
2567: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2568:
1.724 mike 2569: </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 2570: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2571:
2572: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2573:
2574: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2575: <dt>U+000A LINE FEED (LF)</dt>
2576: <dt>U+000C FORM FEED (FF)</dt>
2577: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2578: <dt>U+0020 SPACE</dt>
2579: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2580: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2581: state</a>. Otherwise, treat it as per the "anything else" entry
2582: below.</dd>
2583:
2584: <dt>U+002F SOLIDUS (/)</dt>
2585: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2586: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2587: state</a>. Otherwise, treat it as per the "anything else" entry
2588: below.</dd>
2589:
2590: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2591: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2592: token</a>, then emit the current tag token and switch to the
2593: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2594: else" entry below.</dd>
2595:
2596: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2597: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2598: character</a> (add 0x0020 to the character's code point) to the
2599: current tag token's tag name. Append the <a href="#current-input-character">current input
2600: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2601: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2602:
2603: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2604: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2605: tag token's tag name. Append the <a href="#current-input-character">current input
2606: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2607: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2608:
2609: <dt>Anything else</dt>
2610: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2611: character token, a character token for each of the characters in
2612: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2613: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2614: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2615:
1.724 mike 2616: </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 2617:
2618: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2619:
2620: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2621: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2622: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2623:
2624: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2625: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2626: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2627: escape start state</a>.</dd>
2628:
2629: <dt>Anything else</dt>
2630: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2631: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2632: state</a>.</dd>
2633:
1.724 mike 2634: </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 2635: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2636:
2637: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2638:
2639: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2640: <dd>Create a new end tag token, and set its tag name to the
2641: lowercase version of the <a href="#current-input-character">current input character</a> (add
2642: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2643: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2644: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2645: the token yet; further details will be filled in before it is
2646: emitted.)</dd>
2647:
2648: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2649: <dd>Create a new end tag token, and set its tag name to the
2650: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2651: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2652: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2653: the token yet; further details will be filled in before it is
2654: emitted.)</dd>
2655:
2656: <dt>Anything else</dt>
2657: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2658: character token, and reconsume the <a href="#current-input-character">current input
2659: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2660:
1.724 mike 2661: </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 2662: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2663:
2664: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2665:
2666: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2667: <dt>U+000A LINE FEED (LF)</dt>
2668: <dt>U+000C FORM FEED (FF)</dt>
2669: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2670: <dt>U+0020 SPACE</dt>
2671: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2672: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2673: state</a>. Otherwise, treat it as per the "anything else" entry
2674: below.</dd>
2675:
2676: <dt>U+002F SOLIDUS (/)</dt>
2677: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2678: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2679: state</a>. Otherwise, treat it as per the "anything else" entry
2680: below.</dd>
2681:
2682: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2683: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2684: token</a>, then emit the current tag token and switch to the
2685: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2686: else" entry below.</dd>
2687:
2688: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2689: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2690: character</a> (add 0x0020 to the character's code point) to the
2691: current tag token's tag name. Append the <a href="#current-input-character">current input
2692: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2693: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2694:
2695: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2696: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2697: tag token's tag name. Append the <a href="#current-input-character">current input
2698: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2699: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2700:
2701: <dt>Anything else</dt>
2702: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2703: character token, a character token for each of the characters in
2704: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2705: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2706: in the <a href="#script-data-state">script data state</a>.</dd>
2707:
1.724 mike 2708: </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 2709:
2710: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2711:
2712: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2713: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2714: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2715:
2716: <dt>Anything else</dt>
2717: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2718: <a href="#script-data-state">script data state</a>.</dd>
2719:
1.724 mike 2720: </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 2721:
2722: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2723:
2724: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2725: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2726: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2727:
2728: <dt>Anything else</dt>
2729: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2730: <a href="#script-data-state">script data state</a>.</dd>
2731:
1.724 mike 2732: </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 2733:
2734: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2735:
2736: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2737: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2738: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2739:
1.542 mike 2740: <dt>U+003C LESS-THAN SIGN (<)</dt>
2741: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2742: state</a>.</p></dd>
2743:
1.541 mike 2744: <dt>EOF</dt>
2745: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2746: <a href="#data-state">data state</a>.</dd>
2747:
2748: <dt>Anything else</dt>
1.542 mike 2749: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2750: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2751:
1.724 mike 2752: </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 2753:
2754: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2755:
2756: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2757: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2758: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2759:
1.542 mike 2760: <dt>U+003C LESS-THAN SIGN (<)</dt>
2761: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2762: state</a>.</p></dd>
2763:
1.541 mike 2764: <dt>EOF</dt>
2765: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2766: <a href="#data-state">data state</a>.</dd>
2767:
2768: <dt>Anything else</dt>
1.542 mike 2769: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2770: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2771:
1.724 mike 2772: </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 2773:
2774: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2775:
2776: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2777: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2778: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2779:
1.542 mike 2780: <dt>U+003C LESS-THAN SIGN (<)</dt>
2781: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2782: state</a>.</p></dd>
2783:
1.541 mike 2784: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2785: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2786: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2787:
2788: <dt>EOF</dt>
2789: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2790: <a href="#data-state">data state</a>.</dd>
2791:
2792: <dt>Anything else</dt>
1.542 mike 2793: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2794: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2795:
1.724 mike 2796: </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 2797:
2798: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2799:
2800: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2801: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2802: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2803:
2804: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2805: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2806: <a href="#current-input-character">current input character</a> as a character token. Set the
2807: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2808: lowercase version of the <a href="#current-input-character">current input character</a> (add
2809: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2810: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2811: state</a>.</dd>
2812:
2813: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2814: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2815: <a href="#current-input-character">current input character</a> as a character token. Set the
2816: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2817: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2818: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2819: state</a>.</dd>
2820:
2821: <dt>Anything else</dt>
2822: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2823: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2824: escaped state</a>.</dd>
2825:
1.724 mike 2826: </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 2827:
2828: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2829:
2830: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2831: <dd>Create a new end tag token, and set its tag name to the
2832: lowercase version of the <a href="#current-input-character">current input character</a> (add
2833: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2834: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2835: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2836: state</a>. (Don't emit the token yet; further details will be
2837: filled in before it is emitted.)</dd>
2838:
2839: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2840: <dd>Create a new end tag token, and set its tag name to the
2841: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2842: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2843: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2844: state</a>. (Don't emit the token yet; further details will be
2845: filled in before it is emitted.)</dd>
2846:
2847: <dt>Anything else</dt>
2848: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2849: character token, and reconsume the <a href="#current-input-character">current input
2850: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2851:
1.724 mike 2852: </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 2853:
2854: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2855:
2856: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2857: <dt>U+000A LINE FEED (LF)</dt>
2858: <dt>U+000C FORM FEED (FF)</dt>
2859: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2860: <dt>U+0020 SPACE</dt>
2861: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2862: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2863: state</a>. Otherwise, treat it as per the "anything else" entry
2864: below.</dd>
2865:
2866: <dt>U+002F SOLIDUS (/)</dt>
2867: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2868: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2869: state</a>. Otherwise, treat it as per the "anything else" entry
2870: below.</dd>
2871:
2872: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2873: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2874: token</a>, then emit the current tag token and switch to the
2875: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2876: else" entry below.</dd>
2877:
2878: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2879: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2880: character</a> (add 0x0020 to the character's code point) to the
2881: current tag token's tag name. Append the <a href="#current-input-character">current input
2882: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2883: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2884:
2885: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2886: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2887: tag token's tag name. Append the <a href="#current-input-character">current input
2888: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2889: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2890:
2891: <dt>Anything else</dt>
2892: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2893: character token, a character token for each of the characters in
2894: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2895: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2896: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2897:
1.724 mike 2898: </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 2899:
2900: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2901:
2902: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2903: <dt>U+000A LINE FEED (LF)</dt>
2904: <dt>U+000C FORM FEED (FF)</dt>
2905: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2906: <dt>U+0020 SPACE</dt>
2907: <dt>U+002F SOLIDUS (/)</dt>
2908: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2909: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2910: 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
2911: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2912: data escaped state</a>.</dd>
2913:
2914: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2915: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2916: token. Append the lowercase version of the <a href="#current-input-character">current input
2917: character</a> (add 0x0020 to the character's code point) to the
2918: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2919: escape start state</a>.</dd>
2920:
2921: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2922: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2923: token. Append the <a href="#current-input-character">current input character</a> to the
2924: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2925: escape start state</a>.</dd>
2926:
2927: <dt>Anything else</dt>
2928: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2929: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2930:
1.724 mike 2931: </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 2932:
2933: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2934:
2935: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2936: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2937: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2938:
2939: <dt>U+003C LESS-THAN SIGN (<)</dt>
2940: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2941: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2942: state</a>.</p></dd>
2943:
2944: <dt>EOF</dt>
2945: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2946: <a href="#data-state">data state</a>.</dd>
2947:
2948: <dt>Anything else</dt>
2949: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2950: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
2951: state</a>.</dd>
2952:
1.724 mike 2953: </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 2954:
2955: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2956:
2957: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2958: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2959: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2960:
2961: <dt>U+003C LESS-THAN SIGN (<)</dt>
2962: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2963: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2964: state</a>.</p></dd>
2965:
2966: <dt>EOF</dt>
2967: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2968: <a href="#data-state">data state</a>.</dd>
2969:
2970: <dt>Anything else</dt>
2971: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2972: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2973: state</a>.</dd>
2974:
1.724 mike 2975: </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 2976:
2977: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2978:
2979: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2980: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2981: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2982:
2983: <dt>U+003C LESS-THAN SIGN (<)</dt>
2984: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2985: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2986: state</a>.</p></dd>
2987:
2988: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2989: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2990: <a href="#script-data-state">script data state</a>.</dd>
2991:
2992: <dt>EOF</dt>
2993: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2994: <a href="#data-state">data state</a>.</dd>
2995:
2996: <dt>Anything else</dt>
2997: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2998: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2999: state</a>.</dd>
3000:
1.724 mike 3001: </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 3002:
3003: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3004:
3005: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
3006: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
3007: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
3008: double escape end state</a>.</dd>
3009:
3010: <dt>Anything else</dt>
3011: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3012: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
3013:
1.724 mike 3014: </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 3015:
3016: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3017:
3018: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3019: <dt>U+000A LINE FEED (LF)</dt>
3020: <dt>U+000C FORM FEED (FF)</dt>
3021: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3022: <dt>U+0020 SPACE</dt>
3023: <dt>U+002F SOLIDUS (/)</dt>
3024: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3025: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3026: 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
3027: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
3028: double escaped state</a>.</dd>
3029:
3030: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3031: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3032: token. Append the lowercase version of the <a href="#current-input-character">current input
3033: character</a> (add 0x0020 to the character's code point) to the
3034: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3035: escape end state</a>.</dd>
3036:
3037: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
3038: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3039: token. Append the <a href="#current-input-character">current input character</a> to the
3040: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3041: escape end state</a>.</dd>
3042:
3043: <dt>Anything else</dt>
3044: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3045: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 3046:
1.724 mike 3047: </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 3048:
3049: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3050:
3051: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3052: <dt>U+000A LINE FEED (LF)</dt>
3053: <dt>U+000C FORM FEED (FF)</dt>
3054: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3055: <dt>U+0020 SPACE</dt>
3056: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3057:
3058: <dt>U+002F SOLIDUS (/)</dt>
3059: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3060:
3061: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3062: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3063: state</a>.</dd>
3064:
3065: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3066: <dd>Start a new attribute in the current tag token. Set that
3067: attribute's name to the lowercase version of the <a href="#current-input-character">current input
3068: character</a> (add 0x0020 to the character's code point), and its
3069: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
3070: state</a>.</dd>
3071:
3072: <dt>U+0022 QUOTATION MARK (")</dt>
3073: <dt>U+0027 APOSTROPHE (')</dt>
3074: <dt>U+003C LESS-THAN SIGN (<)</dt>
3075: <dt>U+003D EQUALS SIGN (=)</dt>
3076: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3077: entry below.</dd>
3078:
3079: <dt>EOF</dt>
3080: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3081: <a href="#data-state">data state</a>.</dd>
3082:
3083: <dt>Anything else</dt>
3084: <dd>Start a new attribute in the current tag token. Set that
3085: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3086: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3087: state</a>.</dd>
3088:
1.724 mike 3089: </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 3090:
3091: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3092:
3093: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3094: <dt>U+000A LINE FEED (LF)</dt>
3095: <dt>U+000C FORM FEED (FF)</dt>
3096: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3097: <dt>U+0020 SPACE</dt>
3098: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3099:
3100: <dt>U+002F SOLIDUS (/)</dt>
3101: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3102:
3103: <dt>U+003D EQUALS SIGN (=)</dt>
3104: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3105:
3106: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3107: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3108: state</a>.</dd>
3109:
3110: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3111: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3112: character</a> (add 0x0020 to the character's code point) to the
3113: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3114: state</a>.</dd>
3115:
3116: <dt>U+0022 QUOTATION MARK (")</dt>
3117: <dt>U+0027 APOSTROPHE (')</dt>
3118: <dt>U+003C LESS-THAN SIGN (<)</dt>
3119: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3120: entry below.</dd>
3121:
3122: <dt>EOF</dt>
3123: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3124: <a href="#data-state">data state</a>.</dd>
3125:
3126: <dt>Anything else</dt>
1.541 mike 3127: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3128: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3129: state</a>.</dd>
1.1 mike 3130:
3131: </dl><p>When the user agent leaves the attribute name state (and before
3132: emitting the tag token, if appropriate), the complete attribute's
3133: name must be compared to the other attributes on the same token;
3134: if there is already an attribute on the token with the exact same
3135: name, then this is a <a href="#parse-error">parse error</a> and the new
3136: attribute must be dropped, along with the value that gets
3137: associated with it (if any).</p>
3138:
3139:
1.724 mike 3140: <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 3141:
3142: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3143:
3144: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3145: <dt>U+000A LINE FEED (LF)</dt>
3146: <dt>U+000C FORM FEED (FF)</dt>
3147: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3148: <dt>U+0020 SPACE</dt>
3149: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3150:
3151: <dt>U+002F SOLIDUS (/)</dt>
3152: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3153:
3154: <dt>U+003D EQUALS SIGN (=)</dt>
3155: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3156:
3157: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3158: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3159: state</a>.</dd>
3160:
3161: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3162: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3163: attribute's name to the lowercase version of the <a href="#current-input-character">current
3164: input character</a> (add 0x0020 to the character's code point),
3165: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3166: name state</a>.</dd>
1.1 mike 3167:
3168: <dt>U+0022 QUOTATION MARK (")</dt>
3169: <dt>U+0027 APOSTROPHE (')</dt>
3170: <dt>U+003C LESS-THAN SIGN (<)</dt>
3171: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3172: entry below.</dd>
3173:
3174: <dt>EOF</dt>
3175: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3176: <a href="#data-state">data state</a>.</dd>
3177:
3178: <dt>Anything else</dt>
3179: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3180: attribute's name to the <a href="#current-input-character">current input character</a>, and
3181: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3182: state</a>.</dd>
3183:
1.724 mike 3184: </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 3185:
3186: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3187:
3188: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3189: <dt>U+000A LINE FEED (LF)</dt>
3190: <dt>U+000C FORM FEED (FF)</dt>
3191: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3192: <dt>U+0020 SPACE</dt>
3193: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3194:
3195: <dt>U+0022 QUOTATION MARK (")</dt>
3196: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3197:
3198: <dt>U+0026 AMPERSAND (&)</dt>
3199: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3200: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3201:
3202: <dt>U+0027 APOSTROPHE (')</dt>
3203: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3204:
3205: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3206: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3207: the <a href="#data-state">data state</a>.</dd>
3208:
3209: <dt>U+003C LESS-THAN SIGN (<)</dt>
3210: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3211: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3212: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3213: entry below.</dd>
3214:
3215: <dt>EOF</dt>
3216: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3217: <a href="#data-state">data state</a>.</dd>
3218:
3219: <dt>Anything else</dt>
3220: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3221: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3222: state</a>.</dd>
3223:
1.724 mike 3224: </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 3225:
3226: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3227:
3228: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3229: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3230: state</a>.</dd>
3231:
3232: <dt>U+0026 AMPERSAND (&)</dt>
3233: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3234: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3235: being U+0022 QUOTATION MARK (").</dd>
3236:
3237: <dt>EOF</dt>
3238: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3239: <a href="#data-state">data state</a>.</dd>
3240:
3241: <dt>Anything else</dt>
1.541 mike 3242: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3243: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3244: (double-quoted) state</a>.</dd>
1.1 mike 3245:
1.724 mike 3246: </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 3247:
3248: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3249:
3250: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3251: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3252: state</a>.</dd>
3253:
3254: <dt>U+0026 AMPERSAND (&)</dt>
3255: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3256: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3257: being U+0027 APOSTROPHE (').</dd>
3258:
3259: <dt>EOF</dt>
3260: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3261: <a href="#data-state">data state</a>.</dd>
3262:
3263: <dt>Anything else</dt>
1.541 mike 3264: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3265: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3266: (single-quoted) state</a>.</dd>
1.1 mike 3267:
1.724 mike 3268: </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 3269:
3270: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3271:
3272: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3273: <dt>U+000A LINE FEED (LF)</dt>
3274: <dt>U+000C FORM FEED (FF)</dt>
3275: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3276: <dt>U+0020 SPACE</dt>
3277: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3278:
3279: <dt>U+0026 AMPERSAND (&)</dt>
3280: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3281: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3282: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3283:
3284: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3285: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3286: state</a>.</dd>
3287:
3288: <dt>U+0022 QUOTATION MARK (")</dt>
3289: <dt>U+0027 APOSTROPHE (')</dt>
3290: <dt>U+003C LESS-THAN SIGN (<)</dt>
3291: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3292: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3293: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3294: entry below.</dd>
3295:
3296: <dt>EOF</dt>
3297: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3298: <a href="#data-state">data state</a>.</dd>
3299:
3300: <dt>Anything else</dt>
1.541 mike 3301: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3302: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3303: state</a>.</dd>
3304:
1.724 mike 3305: </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 3306:
3307: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3308:
3309: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3310: the current attribute's value.</p>
3311:
3312: <p>Otherwise, append the returned character token to the current
3313: attribute's value.</p>
3314:
3315: <p>Finally, switch back to the attribute value state that you were
3316: in when were switched into this state.</p>
3317:
3318:
1.724 mike 3319: <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 3320:
3321: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3322:
3323: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3324: <dt>U+000A LINE FEED (LF)</dt>
3325: <dt>U+000C FORM FEED (FF)</dt>
3326: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3327: <dt>U+0020 SPACE</dt>
3328: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3329:
3330: <dt>U+002F SOLIDUS (/)</dt>
3331: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3332:
3333: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3334: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3335: state</a>.</dd>
3336:
3337: <dt>EOF</dt>
3338: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3339: <a href="#data-state">data state</a>.</dd>
3340:
3341: <dt>Anything else</dt>
3342: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3343: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3344:
1.724 mike 3345: </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 3346:
3347: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3348:
3349: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3350: <dd>Set the <i>self-closing flag</i> of the current tag
3351: token. Emit the current tag token. Switch to the <a href="#data-state">data
3352: state</a>.</dd>
3353:
3354: <dt>EOF</dt>
3355: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3356: <a href="#data-state">data state</a>.</dd>
3357:
3358: <dt>Anything else</dt>
3359: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3360: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3361:
1.724 mike 3362: </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 3363:
3364: <p>Consume every character up to and including the first U+003E
3365: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3366: whichever comes first. Emit a comment token whose data is the
3367: concatenation of all the characters starting from and including
3368: the character that caused the state machine to switch into the
3369: bogus comment state, up to and including the character immediately
3370: before the last consumed character (i.e. up to the character just
3371: before the U+003E or EOF character). (If the comment was started
3372: by the end of the file (EOF), the token is empty.)</p>
3373:
3374: <p>Switch to the <a href="#data-state">data state</a>.</p>
3375:
3376: <p>If the end of the file was reached, reconsume the EOF
3377: character.</p>
3378:
3379:
1.724 mike 3380: <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 3381:
1.588 mike 3382: <p>If the next two characters are both U+002D HYPHEN-MINUS
3383: characters (-), consume those two characters, create a comment token
1.1 mike 3384: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3385: start state</a>.</p>
3386:
3387: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3388: case-insensitive</a> match for the word "DOCTYPE", then consume
3389: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3390:
3391: <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
3392: content</a>" and the <a href="#current-node">current node</a> is not an element
1.724 mike 3393: in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a> and the next seven characters are
1.585 mike 3394: an <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "[CDATA[" (the
3395: five uppercase letters "CDATA" with a U+005B LEFT SQUARE BRACKET
3396: character before and after), then consume those characters and
3397: switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3398:
3399: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3400: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3401: consumed, if any, is the first character that will be in the
3402: comment.</p>
3403:
3404:
1.724 mike 3405: <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 3406:
3407: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3408:
3409: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3410: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3411:
3412: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3413: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3414: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3415: -->
3416:
3417: <dt>EOF</dt>
3418: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3419: the EOF character in the <a href="#data-state">data state</a>.</dd>
3420:
3421: <dt>Anything else</dt>
1.541 mike 3422: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3423: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3424:
1.724 mike 3425: </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 3426:
3427: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3428:
3429: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3430: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3431:
3432: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3433: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3434: the <a href="#data-state">data state</a>.</dd>
3435:
3436: <dt>EOF</dt>
3437: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3438: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3439: in comment end state -->
3440:
3441: <dt>Anything else</dt>
1.541 mike 3442: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3443: <a href="#current-input-character">current input character</a> to the comment token's
3444: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3445:
1.724 mike 3446: </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 3447:
3448: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3449:
3450: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3451: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3452:
3453: <dt>EOF</dt>
3454: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3455: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3456: in comment end state -->
3457:
3458: <dt>Anything else</dt>
1.541 mike 3459: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3460: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3461:
1.724 mike 3462: </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 3463:
3464: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3465:
3466: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3467: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3468:
3469: <dt>EOF</dt>
3470: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3471: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3472: in comment end state -->
3473:
3474: <dt>Anything else</dt>
1.541 mike 3475: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3476: <a href="#current-input-character">current input character</a> to the comment token's
3477: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3478:
1.724 mike 3479: </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 3480:
3481: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3482:
3483: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3484: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3485: state</a>.</dd>
3486:
3487: <dt>U+0009 CHARACTER TABULATION</dt>
3488: <dt>U+000A LINE FEED (LF)</dt>
3489: <dt>U+000C FORM FEED (FF)</dt>
3490: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3491: <dt>U+0020 SPACE</dt>
1.588 mike 3492: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3493: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3494: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3495: state</a>.</dd>
1.1 mike 3496:
3497: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3498: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3499: state</a>.</dd>
3500:
1.333 mike 3501: <dt>U+002D HYPHEN-MINUS (-)</dt>
3502: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3503: character (-) to the comment token's data. Stay in the
1.333 mike 3504: <a href="#comment-end-state">comment end state</a>.</dd>
3505:
1.1 mike 3506: <dt>EOF</dt>
3507: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3508: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
1.724 mike 3509: security reasons: otherwise, hostile user could put a <script type="text/javascript"> in
1.1 mike 3510: a comment e.g. in a blog comment and then DOS the server so that
1.724 mike 3511: the end tag isn't read, and then the commented <script type="text/javascript"> tag would
1.1 mike 3512: be treated as live code -->
3513:
3514: <dt>Anything else</dt>
1.588 mike 3515: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3516: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3517: comment token's data. Switch to the <a href="#comment-state">comment
3518: state</a>.</dd>
1.1 mike 3519:
1.724 mike 3520: </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 3521:
3522: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3523:
1.333 mike 3524: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.588 mike 3525: <dd>Append two U+002D HYPHEN-MINUS characters (-) and a U+0021
1.464 mike 3526: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3527: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3528:
1.333 mike 3529: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3530: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3531: state</a>.</dd>
3532:
1.1 mike 3533: <dt>EOF</dt>
3534: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3535: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3536: comment in comment end state -->
3537:
3538: <dt>Anything else</dt>
1.588 mike 3539: <dd>Append two U+002D HYPHEN-MINUS characters (-), a U+0021
1.541 mike 3540: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3541: character</a> to the comment token's data. Switch to the
3542: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3543:
1.724 mike 3544: </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 3545:
3546: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3547:
1.333 mike 3548: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3549: <dt>U+000A LINE FEED (LF)</dt>
3550: <dt>U+000C FORM FEED (FF)</dt>
3551: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3552: <dt>U+0020 SPACE</dt>
1.541 mike 3553: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3554: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3555:
1.333 mike 3556: <dt>U+002D HYPHEN-MINUS (-)</dt>
3557: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3558:
3559: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3560: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3561: state</a>.</dd>
3562:
1.1 mike 3563: <dt>EOF</dt>
3564: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3565: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3566: comment in comment end state -->
3567:
3568: <dt>Anything else</dt>
1.541 mike 3569: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3570: to the <a href="#comment-state">comment state</a>.</dd>
3571:
1.724 mike 3572: </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 3573:
3574: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3575:
3576: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3577: <dt>U+000A LINE FEED (LF)</dt>
3578: <dt>U+000C FORM FEED (FF)</dt>
3579: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3580: <dt>U+0020 SPACE</dt>
3581: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3582:
3583: <dt>EOF</dt>
3584: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3585: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3586: the EOF character in the <a href="#data-state">data state</a>.</dd>
3587:
3588: <dt>Anything else</dt>
1.608 mike 3589: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
3590: <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
1.1 mike 3591:
1.724 mike 3592: </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 3593:
3594: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3595:
3596: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3597: <dt>U+000A LINE FEED (LF)</dt>
3598: <dt>U+000C FORM FEED (FF)</dt>
3599: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3600: <dt>U+0020 SPACE</dt>
3601: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3602:
3603: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3604: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3605: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3606: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3607: state</a>.</dd>
3608:
1.333 mike 3609: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3610: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3611: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3612: the <a href="#data-state">data state</a>.</dd>
3613:
1.1 mike 3614: <dt>EOF</dt>
3615: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3616: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3617: the EOF character in the <a href="#data-state">data state</a>.</dd>
3618:
3619: <dt>Anything else</dt>
3620: <dd>Create a new DOCTYPE token. Set the token's name to the
3621: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3622: state</a>.</dd>
3623:
1.724 mike 3624: </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 3625:
3626: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3627:
3628: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3629: <dt>U+000A LINE FEED (LF)</dt>
3630: <dt>U+000C FORM FEED (FF)</dt>
3631: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3632: <dt>U+0020 SPACE</dt>
3633: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3634:
3635: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3636: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3637: state</a>.</dd>
3638:
3639: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3640: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3641: character</a> (add 0x0020 to the character's code point) to the
3642: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3643: state</a>.</dd>
1.1 mike 3644:
3645: <dt>EOF</dt>
3646: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3647: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3648: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3649:
3650: <dt>Anything else</dt>
1.541 mike 3651: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3652: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3653: state</a>.</dd>
1.1 mike 3654:
1.724 mike 3655: </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 3656:
3657: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3658:
3659: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3660: <dt>U+000A LINE FEED (LF)</dt>
3661: <dt>U+000C FORM FEED (FF)</dt>
3662: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3663: <dt>U+0020 SPACE</dt>
3664: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3665:
3666: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3667: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3668: state</a>.</dd>
3669:
3670: <dt>EOF</dt>
3671: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3672: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3673: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3674:
3675: <dt>Anything else</dt>
3676: <dd>
3677:
3678: <p>If the six characters starting from the <a href="#current-input-character">current input
3679: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3680: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3681: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3682:
3683: <p>Otherwise, if the six characters starting from the
3684: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3685: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3686: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3687: keyword state</a>.</p>
1.1 mike 3688:
3689: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3690: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3691: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3692:
3693: </dd>
3694:
1.724 mike 3695: </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 3696:
3697: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3698:
3699: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3700: <dt>U+000A LINE FEED (LF)</dt>
3701: <dt>U+000C FORM FEED (FF)</dt>
3702: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3703: <dt>U+0020 SPACE</dt>
3704: <dd>Switch to the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3705: state</a>.</dd>
3706:
1.620 mike 3707: <dt>U+0022 QUOTATION MARK (")</dt>
3708: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3709: identifier to the empty string (not missing), then switch to the
3710: <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier (double-quoted) state</a>.</dd>
3711:
3712: <dt>U+0027 APOSTROPHE (')</dt>
3713: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3714: identifier to the empty string (not missing), then switch to the
3715: <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier (single-quoted) state</a>.</dd>
3716:
3717: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3718: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3719: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3720: token. Switch to the <a href="#data-state">data state</a>.</dd>
3721:
1.444 mike 3722: <dt>EOF</dt>
3723: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3724: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3725: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3726:
3727: <dt>Anything else</dt>
1.620 mike 3728: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3729: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3730: DOCTYPE state</a>.</dd>
1.444 mike 3731:
1.724 mike 3732: </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 3733:
3734: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3735:
3736: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3737: <dt>U+000A LINE FEED (LF)</dt>
3738: <dt>U+000C FORM FEED (FF)</dt>
3739: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3740: <dt>U+0020 SPACE</dt>
3741: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3742:
3743: <dt>U+0022 QUOTATION MARK (")</dt>
3744: <dd>Set the DOCTYPE token's public identifier to the empty string
3745: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3746: (double-quoted) state</a>.</dd>
3747:
3748: <dt>U+0027 APOSTROPHE (')</dt>
3749: <dd>Set the DOCTYPE token's public identifier to the empty string
3750: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3751: (single-quoted) state</a>.</dd>
3752:
3753: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3754: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3755: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3756: token. Switch to the <a href="#data-state">data state</a>.</dd>
3757:
3758: <dt>EOF</dt>
3759: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3760: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3761: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3762:
3763: <dt>Anything else</dt>
3764: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3765: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3766: DOCTYPE state</a>.</dd>
3767:
1.724 mike 3768: </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 3769:
3770: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3771:
3772: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3773: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3774:
3775: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3776: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3777: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3778: token. Switch to the <a href="#data-state">data state</a>.</dd>
3779:
3780: <dt>EOF</dt>
3781: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3782: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3783: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3784:
3785: <dt>Anything else</dt>
3786: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3787: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3788: identifier (double-quoted) state</a>.</dd>
3789:
1.724 mike 3790: </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 3791:
3792: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3793:
3794: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3795: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3796:
3797: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3798: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3799: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3800: token. Switch to the <a href="#data-state">data state</a>.</dd>
3801:
3802: <dt>EOF</dt>
3803: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3804: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3805: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3806:
3807: <dt>Anything else</dt>
3808: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3809: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3810: identifier (single-quoted) state</a>.</dd>
3811:
1.724 mike 3812: </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 3813:
3814: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3815:
3816: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3817: <dt>U+000A LINE FEED (LF)</dt>
3818: <dt>U+000C FORM FEED (FF)</dt>
3819: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3820: <dt>U+0020 SPACE</dt>
1.541 mike 3821: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3822: identifiers state</a>.</dd>
1.444 mike 3823:
3824: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3825: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3826: state</a>.</dd>
3827:
3828: <dt>U+0022 QUOTATION MARK (")</dt>
3829: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3830: identifier to the empty string (not missing), then switch to the
3831: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3832:
3833: <dt>U+0027 APOSTROPHE (')</dt>
3834: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3835: identifier to the empty string (not missing), then switch to the
3836: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3837:
3838: <dt>EOF</dt>
3839: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3840: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3841: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3842:
3843: <dt>Anything else</dt>
3844: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3845: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3846: DOCTYPE state</a>.</dd>
3847:
1.724 mike 3848: </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 3849:
3850: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3851:
3852: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3853: <dt>U+000A LINE FEED (LF)</dt>
3854: <dt>U+000C FORM FEED (FF)</dt>
3855: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3856: <dt>U+0020 SPACE</dt>
1.541 mike 3857: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3858: state</a>.</dd>
1.444 mike 3859:
3860: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3861: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3862: state</a>.</dd>
1.1 mike 3863:
3864: <dt>U+0022 QUOTATION MARK (")</dt>
3865: <dd>Set the DOCTYPE token's system identifier to the empty string
3866: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3867: (double-quoted) state</a>.</dd>
3868:
3869: <dt>U+0027 APOSTROPHE (')</dt>
3870: <dd>Set the DOCTYPE token's system identifier to the empty string
3871: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3872: (single-quoted) state</a>.</dd>
3873:
3874: <dt>EOF</dt>
3875: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3876: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3877: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3878:
3879: <dt>Anything else</dt>
3880: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3881: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3882: DOCTYPE state</a>.</dd>
3883:
1.724 mike 3884: </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 3885:
3886: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3887:
3888: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3889: <dt>U+000A LINE FEED (LF)</dt>
3890: <dt>U+000C FORM FEED (FF)</dt>
3891: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3892: <dt>U+0020 SPACE</dt>
3893: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3894: state</a>.</dd>
3895:
1.620 mike 3896: <dt>U+0022 QUOTATION MARK (")</dt>
3897: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3898: identifier to the empty string (not missing), then switch to the
3899: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3900:
3901: <dt>U+0027 APOSTROPHE (')</dt>
3902: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3903: identifier to the empty string (not missing), then switch to the
3904: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3905:
3906: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3907: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3908: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3909: token. Switch to the <a href="#data-state">data state</a>.</dd>
3910:
1.444 mike 3911: <dt>EOF</dt>
3912: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3913: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3914: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3915:
3916: <dt>Anything else</dt>
1.620 mike 3917: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3918: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3919: DOCTYPE state</a>.</dd>
1.444 mike 3920:
1.724 mike 3921: </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 3922:
3923: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3924:
3925: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3926: <dt>U+000A LINE FEED (LF)</dt>
3927: <dt>U+000C FORM FEED (FF)</dt>
3928: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3929: <dt>U+0020 SPACE</dt>
3930: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3931:
3932: <dt>U+0022 QUOTATION MARK (")</dt>
3933: <dd>Set the DOCTYPE token's system identifier to the empty string
3934: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3935: (double-quoted) state</a>.</dd>
3936:
3937: <dt>U+0027 APOSTROPHE (')</dt>
3938: <dd>Set the DOCTYPE token's system identifier to the empty string
3939: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3940: (single-quoted) state</a>.</dd>
3941:
3942: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3943: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3944: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3945: token. Switch to the <a href="#data-state">data state</a>.</dd>
3946:
3947: <dt>EOF</dt>
3948: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3949: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3950: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3951:
3952: <dt>Anything else</dt>
3953: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3954: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3955: DOCTYPE state</a>.</dd>
3956:
1.724 mike 3957: </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 3958:
3959: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3960:
3961: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 3962: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3963: state</a>.</dd>
1.1 mike 3964:
3965: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3966: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3967: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3968: token. Switch to the <a href="#data-state">data state</a>.</dd>
3969:
3970: <dt>EOF</dt>
3971: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3972: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3973: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3974:
3975: <dt>Anything else</dt>
1.541 mike 3976: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3977: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 3978: identifier (double-quoted) state</a>.</dd>
3979:
1.724 mike 3980: </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 3981:
3982: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3983:
3984: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 3985: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3986: state</a>.</dd>
1.1 mike 3987:
3988: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3989: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3990: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3991: token. Switch to the <a href="#data-state">data state</a>.</dd>
3992:
3993: <dt>EOF</dt>
3994: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3995: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3996: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3997:
3998: <dt>Anything else</dt>
1.541 mike 3999: <dd>Append the <a href="#current-input-character">current input character</a> to the current
4000: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 4001: identifier (single-quoted) state</a>.</dd>
4002:
1.724 mike 4003: </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 4004:
4005: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4006:
4007: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4008: <dt>U+000A LINE FEED (LF)</dt>
4009: <dt>U+000C FORM FEED (FF)</dt>
4010: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4011: <dt>U+0020 SPACE</dt>
1.541 mike 4012: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4013: state</a>.</dd>
1.1 mike 4014:
4015: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4016: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
4017: state</a>.</dd>
4018:
4019: <dt>EOF</dt>
4020: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4021: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4022: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4023:
4024: <dt>Anything else</dt>
4025: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
4026: state</a>. (This does <em>not</em> set the DOCTYPE token's
4027: <i>force-quirks flag</i> to <i>on</i>.)</dd>
4028:
1.724 mike 4029: </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 4030:
4031: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4032:
4033: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
4034: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
4035: state</a>.</dd>
4036:
4037: <dt>EOF</dt>
4038: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
4039: <a href="#data-state">data state</a>.</dd>
4040:
4041: <dt>Anything else</dt>
4042: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
4043:
1.724 mike 4044: </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 4045:
4046: <p>Consume every character up to the next occurrence of the three
4047: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
4048: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
4049: end of the file (EOF), whichever comes first. Emit a series of
4050: character tokens consisting of all the characters consumed except
4051: the matching three character sequence at the end (if one was found
4052: before the end of the file).</p>
4053:
4054: <p>Switch to the <a href="#data-state">data state</a>.</p>
4055:
4056: <p>If the end of the file was reached, reconsume the EOF
4057: character.</p>
4058:
4059:
4060:
1.724 mike 4061: <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 4062:
4063: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
4064: reference</dfn>. This definition is used when parsing character
1.299 mike 4065: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 4066: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
4067: state">in attributes</a>.</p>
4068:
4069: <p>The behavior depends on the identity of the next character (the
4070: one immediately after the U+0026 AMPERSAND character):</p>
4071:
4072: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4073: <dt>U+000A LINE FEED (LF)</dt>
4074: <dt>U+000C FORM FEED (FF)</dt>
4075: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4076: <dt>U+0020 SPACE</dt>
4077: <dt>U+003C LESS-THAN SIGN</dt>
4078: <dt>U+0026 AMPERSAND</dt>
4079: <dt>EOF</dt>
4080: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
4081:
4082: <dd>Not a character reference. No characters are consumed, and
4083: nothing is returned. (This is not an error, either.)</dd>
4084:
4085:
4086: <dt>U+0023 NUMBER SIGN (#)</dt>
4087:
4088: <dd>
4089:
4090: <p>Consume the U+0023 NUMBER SIGN.</p>
4091:
4092: <p>The behavior further depends on the character after the U+0023
4093: NUMBER SIGN:</p>
4094:
4095: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
4096: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
4097:
4098: <dd>
4099:
4100: <p>Consume the X.</p>
4101:
4102: <p>Follow the steps below, but using the range of characters
1.464 mike 4103: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
4104: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
4105: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
4106: words, 0-9, A-F, a-f).</p>
1.1 mike 4107:
4108: <p>When it comes to interpreting the number, interpret it as a
4109: hexadecimal number.</p>
4110:
4111: </dd>
4112:
4113:
4114: <dt>Anything else</dt>
4115:
4116: <dd>
4117:
4118: <p>Follow the steps below, but using the range of characters
1.464 mike 4119: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4120:
4121: <p>When it comes to interpreting the number, interpret it as a
4122: decimal number.</p>
4123:
4124: </dd>
4125:
4126: </dl><p>Consume as many characters as match the range of characters
4127: given above.</p>
4128:
4129: <p>If no characters match the range, then don't consume any
4130: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4131: appropriate, the X character). This is a <a href="#parse-error">parse
4132: error</a>; nothing is returned.</p>
4133:
4134: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4135: that too. If it isn't, there is a <a href="#parse-error">parse
4136: error</a>.</p>
4137:
4138: <p>If one or more characters match the range, then take them all
4139: and interpret the string of characters as a number (either
4140: hexadecimal or decimal as appropriate).</p>
4141:
4142: <p>If that number is one of the numbers in the first column of the
4143: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4144: row with that number in the first column, and return a character
4145: token for the Unicode character given in the second column of that
4146: row.</p>
4147:
4148: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4149: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
4150: </td></tr><tr><td>0x0D </td><td>U+000A </td><td>LINE FEED (LF)
1.464 mike 4151: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4152: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4153: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4154: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4155: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4156: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4157: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4158: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4159: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4160: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4161: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4162: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4163: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4164: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4165: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4166: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4167: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4168: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4169: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4170: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4171: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4172: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4173: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4174: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4175: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4176: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4177: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4178: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4179: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4180: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4181: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4182: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4183: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4184: surrogates not allowed; see the comment in the "preprocessing the
4185: input stream" section for details --> or is greater than 0x10FFFF,
4186: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4187: REPLACEMENT CHARACTER.</p>
1.18 mike 4188:
4189: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4190: whose code point is that number.
4191:
4192: <!-- this is the same as the equivalent list in the input stream
4193: section -->
4194: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4195: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4196: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4197: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4198: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4199: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4200: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4201: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4202: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4203: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4204: error</a>.</p>
1.1 mike 4205:
4206: </dd>
4207:
4208:
4209: <dt>Anything else</dt>
4210:
4211: <dd>
4212:
4213: <p>Consume the maximum number of characters possible, with the
4214: consumed characters matching one of the identifiers in the first
4215: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4216: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4217:
4218: <p>If no match can be made, then this is a <a href="#parse-error">parse
4219: error</a>. No characters are consumed, and nothing is
4220: returned.</p>
4221:
1.588 mike 4222: <p>If the last character matched is not a U+003B SEMICOLON
4223: character (;), there is a <a href="#parse-error">parse error</a>.</p>
1.1 mike 4224:
4225: <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
4226: attribute</a>, and the last character matched is not a U+003B
1.588 mike 4227: SEMICOLON character (;), and the next character is in the range
4228: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0041 LATIN
4229: CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z, or U+0061 LATIN
4230: SMALL LETTER A to U+007A LATIN SMALL LETTER Z, then, for
4231: historical reasons, all the characters that were matched after the
4232: U+0026 AMPERSAND character (&) must be unconsumed, and nothing
4233: is returned.</p>
1.1 mike 4234:
4235: <p>Otherwise, return a character token for the character
4236: corresponding to the character reference name (as given by the
4237: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4238: table).</p>
4239:
4240: <div class="example">
4241:
4242: <p>If the markup contains <code title="">I'm &notit; I tell
4243: you</code>, the character reference is parsed as "not", as in,
4244: <code title="">I'm ¬it; I tell you</code>. But if the markup
4245: was <code title="">I'm &notin; I tell you</code>, the
4246: character reference would be parsed as "notin;", resulting in
4247: <code title="">I'm ∉ I tell you</code>.</p>
4248:
4249: </div>
4250:
4251: </dd>
4252:
1.266 mike 4253: </dl></div><div class="impl">
4254:
1.363 mike 4255: <!-- v2: One thing that this doesn't define is handling deeply
4256: nested documents. There are compatibility requirements around that:
4257: you can't throw away the elements altogether, consider Tux made only
4258: with opening <font> elements, one per character. Seems that the best
4259: thing to do is to close some formatting elements from the middle of
4260: the stack when you hit a limit, or something. -->
4261:
1.724 mike 4262: <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 4263:
4264: <p>The input to the tree construction stage is a sequence of tokens
4265: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4266: stage is associated with a DOM <code>Document</code> object when a
4267: parser is created. The "output" of this stage consists of
4268: dynamically modifying or extending that document's DOM tree.</p>
4269:
4270: <p>This specification does not define when an interactive user agent
4271: has to render the <code>Document</code> so that it is available to
4272: the user, or when it has to begin accepting user input.</p>
4273:
4274: <p>As each token is emitted from the tokenizer, the user agent must
4275: process the token according to the rules given in the section
4276: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4277:
4278: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4279: character</dfn> into a node, if that node has a child immediately
4280: before where the character is to be inserted, and that child is a
4281: <code>Text</code> node, and that <code>Text</code> node was the last
4282: node that the parser inserted into the document, then the character
4283: must be appended to that <code>Text</code> node; otherwise, a new
4284: <code>Text</code> node whose data is just that character must be
4285: inserted in the appropriate place.</p>
4286:
4287: <div class="example">
4288:
4289: <p>Here are some sample inputs to the parser and the corresponding
4290: number of text nodes that they result in, assuming a user agent
4291: that executes scripts.</p>
4292:
4293: <table><thead><tr><th>Input </th><th>Number of text nodes
4294: </th></tr></thead><tbody><tr><td><pre>A<script>
4295: var script = document.getElementsByTagName('script')[0];
4296: document.body.removeChild(script);
4297: </script>B</pre>
4298: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4299: </td></tr><tr><td><pre>A<script>
4300: var text = document.createTextNode('B');
4301: document.body.appendChild(text);
4302: </script>C</pre>
4303: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4304: </td></tr><tr><td><pre>A<script>
4305: var text = document.getElementsByTagName('script')[0].firstChild;
4306: text.data = 'B';
4307: document.body.appendChild(text);
4308: </script>B</pre>
4309: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4310: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4311: </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>.)
4312: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4313: </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>.)
4314: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4315: </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.)
4316: </td></tr></tbody></table></div>
4317:
4318: <p id="mutation-during-parsing">DOM mutation events must not fire
4319: for changes caused by the UA parsing the document. (Conceptually,
4320: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4321: 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 4322:
4323: <p class="note">Not all of the tag names mentioned below are
4324: conformant tag names in this specification; many are included to
4325: handle legacy content. They still form part of the algorithm that
4326: implementations are required to implement to claim conformance.</p>
4327:
4328: <p class="note">The algorithm described below places no limit on the
4329: depth of the DOM tree generated, or on the length of tag names,
4330: attribute names, attribute values, text nodes, etc. While
4331: implementors are encouraged to avoid arbitrary limits, it is
4332: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4333: concerns</a> will likely force user agents to impose nesting depth
4334: constraints.</p>
1.1 mike 4335:
4336:
1.724 mike 4337: <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 4338:
4339: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4340: element for the token">create an element for a token</dfn> in a
4341: particular namespace, the UA must create a node implementing the
4342: interface appropriate for the element type corresponding to the tag
4343: name of the token in the given namespace (as given in the
4344: 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 4345: element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, this specification
1.1 mike 4346: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4347: the tag name being the name of that element, with the node being in
4348: the given namespace, and with the attributes on the node being those
4349: given in the given token.</p>
4350:
1.724 mike 4351: <p>The interface appropriate for an element in the <a href="infrastructure.html#html-namespace-0">HTML
1.426 mike 4352: namespace</a> that is not defined in this specification (or
4353: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4354: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4355: interface is not defined by that namespace's specification must use
4356: the interface <code>Element</code>.</p>
4357:
4358: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4359: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4360: invoked once the attributes are set. (This initializes the element's
4361: <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
4362: attributes.)</p>
4363:
4364: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4365: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
1.724 mike 4366: for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, and then
1.1 mike 4367: append this node to the <a href="#current-node">current node</a>, and push it onto
4368: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4369: <a href="#current-node">current node</a>.</p>
4370:
4371: <p>The steps below may also require that the UA insert an HTML
4372: element in a particular place, in which case the UA must follow the
4373: same steps except that it must insert or append the new node in the
4374: location specified instead of appending it to the <a href="#current-node">current
4375: node</a>. (This happens in particular during the parsing of
4376: tables with invalid content.)</p>
4377:
4378: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4379: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4380: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4381: 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
4382: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4383: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4384: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4385: inserting it wherever it is to be inserted.</p>
4386:
4387: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4388: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4389: for the token</a> in the given namespace, and then append this
4390: node to the <a href="#current-node">current node</a>, and push it onto the
4391: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
1.724 mike 4392: <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 4393: whose value is not exactly the same as the element's namespace, that
4394: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4395: element has an <code title="">xmlns:xlink</code> attribute in the
1.724 mike 4396: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="infrastructure.html#xlink-namespace">XLink
1.1 mike 4397: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4398:
4399: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4400: attributes</dfn> for a token, then, if the token has an attribute
4401: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4402:
4403: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4404: attributes</dfn> for a token, then, for each attribute on the token
4405: whose attribute name is one of the ones in the first column of the
4406: following table, change the attribute's name to the name given in
4407: the corresponding cell in the second column. (This fixes the case of
4408: SVG attributes that are not all lowercase.)</p>
4409:
4410: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4411: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4412: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4413: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4414: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4415: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4416: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4417: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4418: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4419: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4420: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4421: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4422: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4423: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4424: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4425: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4426: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4427: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4428: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4429: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4430: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4431: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4432: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4433: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4434: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4435: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4436: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4437: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4438: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4439: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4440: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4441: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4442: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4443: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4444: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4445: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4446: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4447: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4448: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4449: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4450: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4451: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4452: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4453: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4454: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4455: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4456: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4457: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4458: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4459: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4460: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4461: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4462: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4463: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4464: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4465: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4466: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4467: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4468: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4469: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4470: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4471: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4472: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4473: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4474: foreign attributes</dfn> for a token, then, if any of the attributes
4475: on the token match the strings given in the first column of the
4476: following table, let the attribute be a namespaced attribute, with
4477: the prefix being the string given in the corresponding cell in the
4478: second column, the local name being the string given in the
4479: corresponding cell in the third column, and the namespace being the
4480: namespace given in the corresponding cell in the fourth
4481: column. (This fixes the use of namespaced attributes, in particular
4482: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4483: the <span>XML namespace</span></a>.)</p>
4484:
4485: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
1.724 mike 4486: </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>
4487: </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>
4488: </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>
4489: </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>
4490: </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>
4491: </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>
4492: </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>
4493: </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 -->
4494: </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>
4495: </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>
4496: </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>
4497: </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 4498: </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 4499: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4500: following steps. These algorithms are always invoked in response to
4501: a start tag token.</p>
4502:
4503: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4504:
1.91 mike 4505: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4506: text element parsing algorithm</a>, switch the tokenizer to the
4507: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4508: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4509: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4510:
4511: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4512: <a href="#insertion-mode">insertion mode</a>.</p>
4513:
1.540 mike 4514: </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 4515:
1.724 mike 4516: </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 4517:
4518: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4519: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4520: <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 4521: <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
4522: <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
4523: <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
4524: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4525: elements</a>.</p>
4526:
4527: <p>If a step requires the UA to generate implied end tags but lists
4528: an element to exclude from the process, then the UA must perform the
4529: above steps as if that element was not in the above list.</p>
4530:
4531:
1.724 mike 4532: <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 4533:
4534: <p>Foster parenting happens when content is misnested in tables.</p>
4535:
4536: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4537: parent">foster parented</dfn>, the node <var title="">node</var>
4538: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4539:
4540: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4541: 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
4542: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4543: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4544: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4545: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4546: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4547: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4548: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4549: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4550: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4551: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4552: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4553: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4554:
4555: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4556: 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
4557: elements</a>, then <var title="">node</var> must be inserted
4558: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4559: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4560: element</a></i>; otherwise, <var title="">node</var> must be
4561: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4562:
4563:
4564:
1.724 mike 4565: <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 4566:
4567: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4568: mode: initial">initial</a>", tokens must be handled as follows:</p>
4569:
4570: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4571: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4572: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4573: <dd>
4574: <p>Ignore the token.</p>
4575: </dd>
4576:
4577: <dt>A comment token</dt>
4578: <dd>
4579: <p>Append a <code>Comment</code> node to the <code>Document</code>
4580: object with the <code title="">data</code> attribute set to the
4581: data given in the comment token.</p>
4582: </dd>
4583:
4584: <dt>A DOCTYPE token</dt>
4585: <dd>
4586:
4587: <p>If the DOCTYPE token's name is not a
4588: <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
4589: missing, or the token's system identifier is neither missing nor a
4590: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4591: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4592: conditions in the following list are matched, then there is a
4593: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4594: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4595: permitted DOCTYPE</dfn>.</p>
4596:
4597: <ul><!-- only things that trigger no-quirks mode and were valid in
1.688 mike 4598: 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>
4599: match for the string "<code title="">html</code>", the token's
4600: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4601: "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and
4602: the token's system identifier is either missing or the
1.1 mike 4603: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4604:
1.688 mike 4605: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4606: match for the string "<code title="">html</code>", the token's
4607: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4608: "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and
4609: the token's system identifier is either missing or the
1.1 mike 4610: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4611:
1.688 mike 4612: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4613: match for the string "<code title="">html</code>", the token's
4614: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4615: "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
1.1 mike 4616: and the token's system identifier is the
4617: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4618:
1.688 mike 4619: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4620: match for the string "<code title="">html</code>", the token's
4621: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4622: "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and
4623: the token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
1.1 mike 4624: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4625:
4626: </ul><p>Conformance checkers may, based on the values (including
4627: presence or lack thereof) of the DOCTYPE token's name, public
4628: identifier, or system identifier, switch to a conformance checking
4629: mode for another language (e.g. based on the DOCTYPE token a
4630: conformance checker could recognize that the document is an
1.183 mike 4631: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4632: checker.)</p>
4633:
4634: <p>Append a <code>DocumentType</code> node to the
4635: <code>Document</code> node, with the <code title="">name</code>
4636: attribute set to the name given in the DOCTYPE token, or the empty
4637: string if the name was missing; the <code title="">publicId</code>
4638: attribute set to the public identifier given in the DOCTYPE token,
4639: or the empty string if the public identifier was missing; the
4640: <code title="">systemId</code> attribute set to the system
4641: identifier given in the DOCTYPE token, or the empty string if the
4642: system identifier was missing; and the other attributes specific
4643: to <code>DocumentType</code> objects set to null and empty lists
4644: as appropriate. Associate the <code>DocumentType</code> node with
4645: the <code>Document</code> object so that it is returned as the
4646: value of the <code title="">doctype</code> attribute of the
4647: <code>Document</code> object.</p>
4648:
4649: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4650: one of the conditions in the following list, then set the
4651: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4652:
4653: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
1.688 mike 4654: <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 4655: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4656: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4657: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4658: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4659: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4660: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4661: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4662: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4663: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4664: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4665: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4666: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4667: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4668: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4669: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4670: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4671: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4672: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4673: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4674: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4675: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4676: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4677: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4678: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4679: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4680: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4681: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4682: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4683: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4684: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4685: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4686: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4687: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4688: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4689: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4690: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4691: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4692: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4693: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4694: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4695: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4696: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4697: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4698: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4699: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4700: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4701: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4702: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4703: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4704: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4705: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4706: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4707: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4708: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4709: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4710: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4711: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4712: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4713: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4714: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4715: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4716: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4717: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4718: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4719: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4720: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4721: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4722: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4723: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4724: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4725: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4726: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4727: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4728: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4729: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4730: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4731: in the following list, then set the <code>Document</code> to
4732: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4733:
4734: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4735: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4736: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4737: <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 4738: </ul><p>The system identifier and public identifier strings must be
4739: compared to the values given in the lists above in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
4740: case-insensitive</a> manner. A system identifier whose value is
4741: the empty string is not considered missing for the purposes of the
4742: conditions above.</p>
1.1 mike 4743:
4744: <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>
4745:
4746: </dd>
4747:
4748: <dt>Anything else</dt>
4749: <dd>
4750:
4751: <p><a href="#parse-error">Parse error</a>.</p>
4752:
4753: <p>Set the <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
4754:
4755: <p>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
4756: reprocess the current token.</p>
4757:
4758: </dd>
4759:
1.724 mike 4760: </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 4761:
4762: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4763: mode: before html">before html</a>", tokens must be handled as follows:</p>
4764:
4765: <dl class="switch"><dt>A DOCTYPE token</dt>
4766: <dd>
4767: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4768: </dd>
4769:
4770: <dt>A comment token</dt>
4771: <dd>
4772: <p>Append a <code>Comment</code> node to the <code>Document</code>
4773: object with the <code title="">data</code> attribute set to the
4774: data given in the comment token.</p>
4775: </dd>
4776:
4777: <dt>A character token that is one of U+0009 CHARACTER
4778: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4779: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4780: <dd>
4781: <p>Ignore the token.</p>
4782: </dd>
4783:
4784: <dt>A start tag whose tag name is "html"</dt>
4785: <dd>
4786:
1.724 mike 4787: <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 4788: namespace</a>. Append it to the <code>Document</code>
4789: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4790: elements</a>.</p>
4791:
4792: <p id="parser-appcache">If the <code>Document</code> is being
4793: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4794: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4795: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4796: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4797: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4798: 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 4799: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4800: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4801: removed; otherwise, if there is no such attribute or resolving it
4802: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4803: cache selection algorithm</a> with no manifest. The algorithm
4804: must be passed the <code>Document</code> object.</p>
1.1 mike 4805:
4806: <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>
4807:
4808: </dd>
4809:
1.334 mike 4810: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4811: <dd>
4812: <p>Act as described in the "anything else" entry below.</p>
4813: </dd>
4814:
4815: <dt>Any other end tag</dt>
4816: <dd>
4817: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4818: </dd>
4819:
1.1 mike 4820: <dt>Anything else</dt>
4821: <dd>
4822:
1.159 mike 4823: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4824: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4825: of open elements</a>.</p>
4826:
4827: <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
4828: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4829: algorithm</a> with no manifest, passing it the
4830: <code>Document</code> object.</p>
4831:
4832: <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
4833: reprocess the current token.</p>
4834:
4835: </dd>
4836:
4837: </dl><p>The root element can end up being removed from the
4838: <code>Document</code> object, e.g. by scripts; nothing in particular
4839: happens in such cases, content continues being appended to the nodes
4840: as described in the next section.</p>
4841:
4842:
1.724 mike 4843: <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 4844:
4845: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4846: mode: before head">before head</a>", tokens must be handled as follows:</p>
4847:
4848: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4849: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4850: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4851: <dd>
4852: <p>Ignore the token.</p> <!-- :-( -->
4853: </dd>
4854:
4855: <dt>A comment token</dt>
4856: <dd>
4857: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4858: node</a> with the <code title="">data</code> attribute set to
4859: the data given in the comment token.</p>
4860: </dd>
4861:
4862: <dt>A DOCTYPE token</dt>
4863: <dd>
4864: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4865: </dd>
4866:
4867: <dt>A start tag whose tag name is "html"</dt>
4868: <dd>
4869: <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
4870: mode</a>.</p>
4871: </dd>
4872:
4873: <dt>A start tag whose tag name is "head"</dt>
4874: <dd>
4875:
4876: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4877:
4878: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4879: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4880:
4881: <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>
4882:
4883: </dd>
4884:
4885: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4886: <dd>
4887:
4888: <p>Act as if a start tag token with the tag name "head" and no
4889: attributes had been seen, then reprocess the current token.</p>
4890:
4891: </dd>
4892:
4893: <dt>Any other end tag</dt>
4894: <dd>
4895:
4896: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4897:
4898: </dd>
4899:
4900: <dt>Anything else</dt>
4901: <dd>
4902:
4903: <p>Act as if a start tag token with the tag name "head" and no
4904: attributes had been seen, then reprocess the current
4905: token.</p>
4906:
4907: </dd>
4908:
1.724 mike 4909: </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 4910:
4911: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4912: mode: in head">in head</a>", tokens must be handled as follows:</p>
4913:
4914: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4915: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4916: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4917: <dd>
4918: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4919: the <a href="#current-node">current node</a>.</p>
4920: </dd>
4921:
4922: <dt>A comment token</dt>
4923: <dd>
4924: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4925: node</a> with the <code title="">data</code> attribute set to
4926: the data given in the comment token.</p>
4927: </dd>
4928:
4929: <dt>A DOCTYPE token</dt>
4930: <dd>
4931: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4932: </dd>
4933:
4934: <dt>A start tag whose tag name is "html"</dt>
4935: <dd>
4936: <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
4937: mode</a>.</p>
4938: </dd>
4939:
4940: <dt>A start tag whose tag name is one of: "base", "command",
4941: "link"</dt>
4942: <dd>
4943:
4944: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4945: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4946: elements</a>.</p>
4947:
4948: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4949: token's <i>self-closing flag</i></a>, if it is set.</p>
4950:
4951: </dd>
4952:
4953: <dt>A start tag whose tag name is "meta"</dt>
4954: <dd>
4955:
4956: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4957: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4958: elements</a>.</p>
4959:
4960: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4961: token's <i>self-closing flag</i></a>, if it is set.</p>
4962:
4963: <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
4964: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4965: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4966: encoding</a> to the encoding given by the value of the
4967: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4968:
4969: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4970: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4971: Content-Type</a> to its value returns a supported encoding
4972: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4973: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4974: encoding</a> to the encoding <var title="">encoding</var>.</p>
4975:
4976: </dd>
4977:
4978: <dt>A start tag whose tag name is "title"</dt>
4979: <dd>
4980: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
4981: </dd>
4982:
4983: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
4984: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
4985: <dd>
1.91 mike 4986: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 4987: </dd>
4988:
4989: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
4990: <dd>
4991:
4992: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4993:
4994: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
4995: noscript</a>".</p>
4996:
4997: </dd>
4998:
4999: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
5000: <dd>
5001:
5002: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
1.724 mike 5003: <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</p></li>
1.1 mike 5004:
5005: <li>
5006:
5007: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
5008:
5009: <p class="note">This ensures that, if the script is external,
1.159 mike 5010: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 5011: calls in the script will execute in-line, instead of blowing the
5012: document away, as would happen in most other cases. It also
5013: prevents the script from executing until the end tag is
5014: seen.</p>
5015:
5016: </li>
5017:
5018: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
5019: fragment parsing algorithm</a>, then mark the
1.484 mike 5020: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
5021: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 5022:
5023: <li><p>Append the new element to the <a href="#current-node">current node</a>
5024: and push it onto the <a href="#stack-of-open-elements">stack of open
5025: elements</a>.</p></li>
5026:
1.541 mike 5027: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
5028: state</a>.</p></li>
1.1 mike 5029:
5030: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
5031: <a href="#insertion-mode">insertion mode</a>.</p>
5032:
1.540 mike 5033: </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 5034:
5035: </ol></dd>
5036:
5037: <dt>An end tag whose tag name is "head"</dt>
5038: <dd>
5039:
5040: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 5041: <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 5042: elements</a>.</p>
5043:
5044: <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>
5045:
5046: </dd>
5047:
5048: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5049: <dd>
5050: <p>Act as described in the "anything else" entry below.</p>
5051: </dd>
5052:
5053: <dt>A start tag whose tag name is "head"</dt>
5054: <dt>Any other end tag</dt>
5055: <dd>
5056: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5057: </dd>
5058:
5059: <dt>Anything else</dt>
5060: <dd>
5061:
5062: <!-- can't get here with an EOF and a fragment case -->
5063:
5064: <p>Act as if an end tag token with the tag name "head" had
5065: been seen, and reprocess the current token.</p>
5066:
5067: </dd>
5068:
1.724 mike 5069: </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 5070:
5071: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
5072: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
5073:
5074: <dl class="switch"><dt>A DOCTYPE token</dt>
5075: <dd>
5076: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5077: </dd>
5078:
5079: <dt>A start tag whose tag name is "html"</dt>
5080: <dd>
5081: <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
5082: mode</a>.</p>
5083: </dd>
5084:
5085: <dt>An end tag whose tag name is "noscript"</dt>
5086: <dd>
5087:
5088: <p>Pop the <a href="#current-node">current node</a> (which will be a
5089: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
5090: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 5091: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 5092:
5093: <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>
5094:
5095: </dd>
5096:
5097: <dt>A character token that is one of U+0009 CHARACTER
5098: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5099: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5100: <dt>A comment token</dt>
5101: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
5102: <dd>
5103: <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
5104: mode</a>.</p>
5105: </dd>
5106:
5107: <dt>An end tag whose tag name is "br"</dt>
5108: <dd>
5109: <p>Act as described in the "anything else" entry below.</p>
5110: </dd>
5111:
5112: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5113: <dt>Any other end tag</dt>
5114: <dd>
5115: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5116: </dd>
5117:
5118: <dt>Anything else</dt>
5119: <dd>
5120:
5121: <!-- can't get here with an EOF and a fragment case -->
5122:
5123: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5124: name "noscript" had been seen and reprocess the current
5125: token.</p>
5126:
5127: </dd>
5128:
1.724 mike 5129: </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 5130:
5131: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5132: mode: after head">after head</a>", tokens must be handled as follows:</p>
5133:
5134: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5135: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5136: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5137: <dd>
5138: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5139: the <a href="#current-node">current node</a>.</p>
5140: </dd>
5141:
5142: <dt>A comment token</dt>
5143: <dd>
5144: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5145: node</a> with the <code title="">data</code> attribute set to
5146: the data given in the comment token.</p>
5147: </dd>
5148:
5149: <dt>A DOCTYPE token</dt>
5150: <dd>
5151: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5152: </dd>
5153:
5154: <dt>A start tag whose tag name is "html"</dt>
5155: <dd>
5156: <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
5157: mode</a>.</p>
5158: </dd>
5159:
5160: <dt>A start tag whose tag name is "body"</dt>
5161: <dd>
5162:
5163: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5164:
5165: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5166:
5167: <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>
5168:
5169: </dd>
5170:
5171: <dt>A start tag whose tag name is "frameset"</dt>
5172: <dd>
5173:
5174: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5175:
5176: <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>
5177:
5178: </dd>
5179:
5180: <dt>A start tag token whose tag name is one of: "base", "link",
5181: "meta", "noframes", "script", "style", "title"</dt>
5182: <dd>
5183:
5184: <p><a href="#parse-error">Parse error</a>.</p>
5185:
5186: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5187: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5188:
5189: <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
5190: mode</a>.</p>
5191:
5192: <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
5193: of open elements</a>.</p>
5194:
5195: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5196: pointer</a> cannot be null at this point.</p>
5197:
5198: </dd>
5199:
5200: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5201: <dd>
5202: <p>Act as described in the "anything else" entry below.</p>
5203: </dd>
5204:
5205: <dt>A start tag whose tag name is "head"</dt>
5206: <dt>Any other end tag</dt>
5207: <dd>
5208: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5209: </dd>
5210:
5211: <dt>Anything else</dt>
5212: <dd>
5213: <p>Act as if a start tag token with the tag name "body" and no
5214: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5215: flag</a> back to "ok", and then reprocess the current
5216: token.</p>
5217: </dd>
5218:
1.724 mike 5219: </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 5220:
5221: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5222: mode: in body">in body</a>", tokens must be handled as follows:</p>
5223:
5224: <dl class="switch"><dt>A character token</dt>
5225: <dd>
5226:
5227: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5228: any.</p>
5229:
5230: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5231: character</a> into the <a href="#current-node">current node</a>.</p>
5232:
5233: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5234: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5235: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5236: flag</a> to "not ok".</p>
5237:
5238: </dd>
5239:
5240: <dt>A comment token</dt>
5241: <dd>
5242: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5243: node</a> with the <code title="">data</code> attribute set to
5244: the data given in the comment token.</p>
5245: </dd>
5246:
5247: <dt>A DOCTYPE token</dt>
5248: <dd>
5249: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5250: </dd>
5251:
5252: <dt>A start tag whose tag name is "html"</dt>
5253: <dd>
5254: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5255: check to see if the attribute is already present on the top
5256: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5257: add the attribute and its corresponding value to that element.</p>
5258: </dd>
5259:
5260: <dt>A start tag token whose tag name is one of: "base", "command",
5261: "link", "meta", "noframes", "script", "style", "title"</dt>
5262: <dd>
5263: <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
5264: mode</a>.</p>
5265: </dd>
5266:
5267: <dt>A start tag whose tag name is "body"</dt>
5268: <dd>
5269:
5270: <p><a href="#parse-error">Parse error</a>.</p>
5271:
5272: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5273: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5274: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5275: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5276:
5277: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5278: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5279: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5280: elements</a>. If it is not, add the attribute and its
5281: corresponding value to that element.</p>
5282:
5283: </dd>
5284:
5285: <dt>A start tag whose tag name is "frameset"</dt>
5286: <dd>
5287:
5288: <p><a href="#parse-error">Parse error</a>.</p>
5289:
5290: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5291: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5292: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5293: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5294:
5295: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5296: the token.</p>
5297:
5298: <p>Otherwise, run the following steps:</p>
5299:
5300: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5301: elements</a> from its parent node, if it has one.</p></li>
5302:
5303: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5304: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5305: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5306:
5307: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5308: token.</p></li>
5309:
5310: <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>
5311:
5312: </li></ol></dd>
5313:
5314: <dt>An end-of-file token</dt>
5315: <dd>
5316:
5317: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5318: 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>
5319: 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 5320: <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
5321: <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
5322: <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 5323: <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 5324: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5325: fragment cases) -->
1.1 mike 5326:
5327: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5328:
5329: </dd>
5330:
5331: <dt>An end tag whose tag name is "body"</dt>
5332: <dd>
5333:
5334: <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
5335: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5336: token.</p>
5337:
5338: <!-- if we get here, the insertion mode here is forcibly "in
5339: body". -->
5340:
5341: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5342: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5343: <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
5344: <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
5345: <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
5346: <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
5347: <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
5348: <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 5349: <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
5350: <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 5351: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5352: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5353: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5354:
5355: <!-- If we ever change the frameset-ok flag to an insertion mode,
5356: then we'd have to somehow keep track of its state when we switch
5357: to after-body. -->
5358:
5359: <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>
5360:
5361: </dd>
5362:
5363: <dt>An end tag whose tag name is "html"</dt>
5364: <dd>
5365:
5366: <p>Act as if an end tag with tag name "body" had been seen,
5367: then, if that token wasn't ignored, reprocess the current
5368: token.</p>
5369:
5370: </dd>
5371:
5372: <!-- start tags for non-phrasing flow content elements -->
5373:
5374: <!-- the normal ones -->
5375: <dt>A start tag whose tag name is one of: "address", "article",
1.683 mike 5376: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5377: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5378: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5379: <dd>
5380:
5381: <!-- As of May 2008 this doesn't match any browser exactly, but is
5382: as close to what IE does as I can get without doing the non-tree
5383: DOM nonsense, and thus should actually afford better compatibility
5384: when implemented by the other browsers. -->
5385:
5386: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5387: an element in scope">has a <code>p</code> element in
5388: scope</a>, then act as if an end tag with the tag name
5389: "p" had been seen.</p>
5390:
5391: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5392:
5393: </dd>
5394:
5395: <!-- as normal, but close h1-h6 if it's the current node -->
5396: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5397: "h5", "h6"</dt>
5398: <dd>
5399:
5400: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5401: an element in scope">has a <code>p</code> element in
5402: scope</a>, then act as if an end tag with the tag name
5403: "p" had been seen.</p>
5404:
5405: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5406: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5407: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5408: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5409: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
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 drops leading newline -->
5416: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5417: <dd>
5418:
5419: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5420: an element in scope">has a <code>p</code> element in
5421: scope</a>, then act as if an end tag with the tag name
5422: "p" had been seen.</p>
5423:
5424: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5425:
5426: <p>If the next token is a U+000A LINE FEED (LF) character
5427: token, then ignore that token and move on to the next
5428: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5429: ignored as an authoring convenience.)</p>
5430:
5431: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5432:
5433: </dd>
5434:
5435: <!-- as normal, but interacts with the form element pointer -->
5436: <dt>A start tag whose tag name is "form"</dt>
5437: <dd>
5438:
5439: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5440: pointer</a> is not null, then this is a <a href="#parse-error">parse
5441: error</a>; ignore the token.</p>
5442:
5443: <p>Otherwise:</p>
5444:
5445: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5446: an element in scope">has a <code>p</code> element in
5447: scope</a>, then act as if an end tag with the tag name
5448: "p" had been seen.</p>
5449:
5450: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5451: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5452: point to the element created.</p>
5453:
5454: </dd>
5455:
5456: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5457: <dt>A start tag whose tag name is "li"</dt>
5458: <dd>
5459:
5460: <p>Run the following algorithm:</p>
5461:
5462: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5463:
5464: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5465: node</a> (the bottommost node of the stack).</p></li>
5466:
1.578 mike 5467: <li><p><i>Loop</i>: If <var title="">node</var> is an
5468: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5469: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5470:
1.578 mike 5471: <li><p>If <var title="">node</var> is not in the
1.1 mike 5472: <a href="#formatting">formatting</a> category, and is not in the
5473: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5474: <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 5475: element, then jump to the last step.</p></li> <!-- an element
5476: <foo> is in this list if the following markup:
5477:
5478: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5479:
5480: ...results in the second <li> not being (in any way) a descendant
5481: of the first <li>, or if <foo> is a formatting element that gets
5482: reopened later. -->
5483:
5484: <li><p>Otherwise, set <var title="">node</var> to the previous
5485: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5486: the step labeled <i>loop</i>.</p></li>
5487:
5488: <li>
5489:
5490: <p>This is the last step.</p>
5491:
5492: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5493: an element in scope">has a <code>p</code> element in
5494: scope</a>, then act as if an end tag with the tag name
5495: "p" had been seen.</p>
5496:
5497: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5498: token.</p>
5499:
5500: </li>
5501:
5502: </ol></dd>
5503:
5504: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5505: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5506: <dd>
5507:
5508: <p>Run the following algorithm:</p>
5509:
5510: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5511:
5512: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5513: node</a> (the bottommost node of the stack).</p></li>
5514:
5515: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5516: <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
5517: tag with the same tag name as <var title="">node</var> had been
5518: seen, then jump to the last step.</p></li>
1.1 mike 5519:
5520: <li><p>If <var title="">node</var> is not in the
5521: <a href="#formatting">formatting</a> category, and is not in the
5522: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5523: <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 5524: element, then jump to the last step.</p></li> <!-- an element
5525: <foo> is in this list if the following markup:
5526:
5527: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5528:
5529: ...results in the second <dt> not being (in any way) a descendant
5530: of the first <dt>, or if <foo> is a formatting element that gets
5531: reopened later. -->
5532:
5533: <li><p>Otherwise, set <var title="">node</var> to the previous
5534: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5535: the step labeled <i>loop</i>.</p></li>
5536:
5537: <li>
5538:
5539: <p>This is the last step.</p>
5540:
5541: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5542: an element in scope">has a <code>p</code> element in
5543: scope</a>, then act as if an end tag with the tag name
5544: "p" had been seen.</p>
5545:
5546: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5547: token.</p>
5548:
5549: </li>
5550:
5551: </ol></dd>
5552:
5553: <!-- same as normal, but effectively ends parsing -->
5554: <dt>A start tag whose tag name is "plaintext"</dt>
5555: <dd>
5556:
5557: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5558: an element in scope">has a <code>p</code> element in
5559: scope</a>, then act as if an end tag with the tag name
5560: "p" had been seen.</p>
5561:
5562: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5563:
1.541 mike 5564: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5565:
1.541 mike 5566: <p class="note">Once a start tag with the tag name "plaintext" has
5567: been seen, that will be the last token ever seen other than
5568: character tokens (and the end-of-file token), because there is no
5569: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5570:
5571: </dd>
5572:
5573: <!-- end tags for non-phrasing flow content elements -->
5574:
5575: <!-- the normal ones -->
5576: <dt>An end tag whose tag name is one of: "address", "article",
1.683 mike 5577: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5578: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5579: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5580: "section", "ul"</dt>
1.1 mike 5581: <dd>
5582:
5583: <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>
5584: with the same tag name as that of the token, then this is a
5585: <a href="#parse-error">parse error</a>; ignore the token.</p>
5586:
5587: <p>Otherwise, run these steps:</p>
5588:
5589: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5590:
5591: <li><p>If the <a href="#current-node">current node</a> is not an element with
5592: the same tag name as that of the token, then this is a
5593: <a href="#parse-error">parse error</a>.</p></li>
5594:
5595: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5596: until an element with the same tag name as the token has been
5597: popped from the stack.</p></li>
5598:
5599: </ol></dd>
5600:
5601: <!-- removes the form element pointer instead of the matching node -->
5602: <dt>An end tag whose tag name is "form"</dt>
5603: <dd>
5604:
5605: <p>Let <var title="">node</var> be the element that the
5606: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5607: to.</p>
5608:
5609: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5610: to null.</p>
5611:
5612: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5613: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5614: scope">have <var title="">node</var> in scope</a>, then this is
5615: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5616:
5617: <p>Otherwise, run these steps:</p>
5618:
5619: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5620:
5621: <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
5622: error</a>.</p></li>
5623:
5624: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5625: open elements</a>.</p></li>
5626:
5627: </ol></dd>
5628:
5629: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5630: <dt>An end tag whose tag name is "p"</dt>
5631: <dd>
5632:
5633: <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>
5634: with the same tag name as that of the token, then this is a
5635: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5636: "p" had been seen, then reprocess the current token.</p>
5637:
5638: <p>Otherwise, run these steps:</p>
5639:
5640: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5641: for elements with the same tag name as the token.</p></li>
5642:
5643: <li><p>If the <a href="#current-node">current node</a> is not an element with
5644: the same tag name as that of the token, then this is a
5645: <a href="#parse-error">parse error</a>.</p></li>
5646:
5647: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5648: until an element with the same tag name as the token has been
5649: popped from the stack.</p></li>
5650:
5651: </ol></dd>
5652:
1.234 mike 5653: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5654: <dt>An end tag whose tag name is "li"</dt>
5655: <dd>
5656:
5657: <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
5658: item scope</a> with the same tag name as that of the token,
5659: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5660:
5661: <p>Otherwise, run these steps:</p>
5662:
5663: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5664: for elements with the same tag name as the token.</p></li>
5665:
5666: <li><p>If the <a href="#current-node">current node</a> is not an element with
5667: the same tag name as that of the token, then this is a
5668: <a href="#parse-error">parse error</a>.</p></li>
5669:
5670: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5671: until an element with the same tag name as the token has been
5672: popped from the stack.</p></li>
5673:
5674: </ol></dd>
5675:
1.1 mike 5676: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5677: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5678: <dd>
5679:
5680: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5681: with the same tag name as that of the token, then this is a
5682: <a href="#parse-error">parse error</a>; ignore the token.</p>
5683:
5684: <p>Otherwise, run these steps:</p>
5685:
5686: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5687: for elements with the same tag name as the token.</p></li>
5688:
5689: <li><p>If the <a href="#current-node">current node</a> is not an element with
5690: the same tag name as that of the token, then this is a
5691: <a href="#parse-error">parse error</a>.</p></li>
5692:
5693: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5694: until an element with the same tag name as the token has been
5695: popped from the stack.</p></li>
5696:
5697: </ol></dd>
5698:
5699: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5700: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5701: <dd>
5702:
5703: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5704: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5705: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5706:
5707: <p>Otherwise, run these steps:</p>
5708:
5709: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5710:
5711: <li><p>If the <a href="#current-node">current node</a> is not an element with
5712: the same tag name as that of the token, then this is a
5713: <a href="#parse-error">parse error</a>.</p></li>
5714:
5715: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5716: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5717: "h5", or "h6" has been popped from the stack.</p></li>
5718:
5719: </ol></dd>
5720:
5721: <dt>An end tag whose tag name is "sarcasm"</dt>
5722: <dd>
5723: <p>Take a deep breath, then act as described in the "any other end
5724: tag" entry below.</p>
5725: </dd>
5726:
5727: <!-- ADOPTION AGENCY ELEMENTS
5728: Mozilla-only: bdo blink del ins sub sup q
5729: Safari-only: code dfn kbd nobr samp var wbr
5730: Both: a b big em font i s small strike strong tt u -->
5731:
5732: <dt>A start tag whose tag name is "a"</dt>
5733: <dd>
5734:
5735: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5736: contains an element whose tag name is "a" between the end of
5737: the list and the last marker on the list (or the start of the
5738: list if there is no marker on the list), then this is a
5739: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5740: name "a" had been seen, then remove that element from the
5741: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5742: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5743: already remove it (it might not have if the element is not
5744: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5745: scope</a>).</p>
5746:
5747: <p class="example">In the non-conforming stream
5748: <code><a href="a">a<table><a href="b">b</table>x</code>,
5749: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5750: the second one, and the "x" character would be inside a link
5751: to "b", not to "a". This is despite the fact that the outer
5752: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5753: regular <code></a></code> end tag at the start of the table
5754: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5755:
5756: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5757: any.</p>
5758:
5759: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5760: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5761: elements</a>.</p>
5762:
5763: </dd>
5764:
5765: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5766: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5767: <dd>
5768:
5769: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5770: any.</p>
5771:
5772: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5773: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5774: elements</a>.</p>
5775:
5776: </dd>
5777:
5778: <dt>A start tag whose tag name is "nobr"</dt>
5779: <dd>
5780:
5781: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5782: any.</p>
5783:
5784: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5785: element in scope">has a <code>nobr</code> element in scope</a>,
5786: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5787: the tag name "nobr" had been seen, then once again
5788: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5789: any.</p>
5790:
5791: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5792: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5793: elements</a>.</p>
5794:
5795: </dd>
5796:
5797: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5798: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5799: "strike", "strong", "tt", "u"</dt>
5800: <dd>
5801:
5802: <p>Follow these steps:</p>
5803:
5804: <ol><li>
5805:
5806: <p>Let the <var title="">formatting element</var> be the
5807: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5808: elements</a> that:</p>
5809:
5810: <ul><li>is between the end of the list and the last scope
5811: marker in the list, if any, or the start of the list
5812: otherwise, and</li>
5813:
5814: <li>has the same tag name as the token.</li>
5815:
5816: </ul><p>If there is no such node, or, if that node is also in the
5817: <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
5818: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5819: steps.</p>
5820:
5821: <p>Otherwise, if there is such a node, but that node is not
5822: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5823: <a href="#parse-error">parse error</a>; remove the element from the list,
5824: and abort these steps.</p>
5825:
5826: <p>Otherwise, there is a <var title="">formatting
5827: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5828: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5829: element in scope">in scope</a>. If the element is not the
5830: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5831: error</a>. In any case, proceed with the algorithm as
5832: written in the following steps.</p>
5833:
5834: </li>
5835:
5836: <li><p>Let the <var title="">furthest block</var> be the
5837: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5838: is lower in the stack than the <var title="">formatting
5839: element</var>, and is not an element in the
5840: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5841: categories. There might not be one.</p></li>
5842:
5843: <li><p>If there is no <var title="">furthest block</var>,
5844: then the UA must skip the subsequent steps and instead just
5845: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5846: elements</a>, from the <a href="#current-node">current node</a> up to and
5847: including the <var title="">formatting element</var>, and
5848: remove the <var title="">formatting element</var> from the
5849: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5850:
5851: <li><p>Let the <var title="">common ancestor</var> be the element
5852: immediately above the <var title="">formatting element</var> in the
5853: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5854:
5855: <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
5856: formatting elements</a> relative to the elements on either
5857: side of it in the list.</p></li>
5858:
5859: <li>
5860:
5861: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5862: <var title="">furthest block</var>. Follow these steps:</p>
5863:
5864: <ol><li>Let <var title="">node</var> be the element immediately
5865: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5866: elements</a>, or if <var title="">node</var> is no longer in
5867: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5868: removed by the next step), the element that was immediately
5869: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5870: elements</a> before <var title="">node</var> was
5871: removed.</li>
1.1 mike 5872:
5873: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5874: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5875: elements</a> and then go back to step 1.</li>
5876:
5877: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5878: in the overall algorithm.</li>
5879:
5880: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5881: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5882: elements</a>.</li>
5883:
5884: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5885: element <var title="">node</var> was created, replace the entry
5886: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5887: formatting elements</a> with an entry for the new element,
5888: replace the entry for <var title="">node</var> in the
5889: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5890: element, and let <var title="">node</var> be the new
5891: element.</li>
5892:
5893: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5894: parent node if any.</li>
5895:
5896: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5897:
5898: <li>Return to step 1 of this inner set of steps.</li>
5899:
5900: </ol></li>
5901:
5902: <li>
5903:
5904: <p>If the <var title="">common ancestor</var> node is a
5905: <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>,
5906: <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,
5907: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5908: node</var> ended up being in the previous step, first removing
5909: it from its previous parent node if any.</p>
5910:
5911: <p>Otherwise, append whatever <var title="">last node</var>
5912: ended up being in the previous step to the <var title="">common
5913: ancestor</var> node, first removing it from its previous parent
5914: node if any.</p>
5915:
5916: </li>
5917:
5918: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5919: <var title="">formatting element</var> was created.</p></li>
5920:
5921: <li><p>Take all of the child nodes of the <var title="">furthest
5922: block</var> and append them to the element created in the last
5923: step.</p></li>
5924:
5925: <li><p>Append that new element to the <var title="">furthest
5926: block</var>.</p></li>
5927:
5928: <li><p>Remove the <var title="">formatting element</var> from the
5929: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5930: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5931: elements</a> at the position of the aforementioned
5932: bookmark.</p></li>
5933:
5934: <li><p>Remove the <var title="">formatting element</var> from the
5935: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5936: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5937: the position of the <var title="">furthest block</var> in that
5938: stack.</p></li>
5939:
5940: <li><p>Jump back to step 1 in this series of steps.</p></li>
5941:
1.334 mike 5942: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5943: to change parents, it has been dubbed the "adoption agency
5944: algorithm" (in contrast with other possible algorithms for dealing
5945: with misnested content, which included the "incest algorithm", the
1.1 mike 5946: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5947:
5948: </dd>
5949:
5950: <dt>A start tag whose tag name is "button"</dt>
5951: <dd>
5952:
5953: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5954: an element in scope">has a <code>button</code> element in
5955: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5956: act as if an end tag with the tag name "button" had been seen,
5957: then reprocess the token.</p>
5958:
5959: <p>Otherwise:</p>
5960:
5961: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5962: any.</p>
5963:
5964: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5965:
5966: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5967: formatting elements</a>.</p>
5968:
5969: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5970:
5971: </dd>
5972:
5973: <dt>A start tag token whose tag name is one of: "applet",
5974: "marquee", "object"</dt>
5975: <dd>
5976:
5977: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5978: any.</p>
5979:
5980: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5981:
5982: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5983: formatting elements</a>.</p>
5984:
5985: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5986:
5987: </dd>
5988:
5989: <dt>An end tag token whose tag name is one of: "applet", "button",
5990: "marquee", "object"</dt>
5991: <dd>
5992:
5993: <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>
5994: with the same tag name as that of the token, then this is a
5995: <a href="#parse-error">parse error</a>; ignore the token.</p>
5996:
5997: <p>Otherwise, run these steps:</p>
5998:
5999: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6000:
6001: <li><p>If the <a href="#current-node">current node</a> is not an element with
6002: the same tag name as that of the token, then this is a
6003: <a href="#parse-error">parse error</a>.</p></li>
6004:
6005: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
6006: until an element with the same tag name as the token has been
6007: popped from the stack.</p></li>
6008:
6009: <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
6010: last marker</a>.</li>
6011:
6012: </ol></dd>
6013:
6014: <dt>A start tag whose tag name is "table"</dt>
6015: <dd>
6016:
6017: <p>If the <code>Document</code> is <em>not</em> set to
6018: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
6019: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
6020: <code>p</code> element in scope</a>, then act as if an end tag
6021: with the tag name "p" had been seen.</p> <!-- i hate myself (this
6022: quirk was basically caused by acid2; if i'd realised we could
6023: change the specs when i wrote acid2, we could have avoided having
6024: any parsing-mode quirks) -Hixie -->
6025:
6026: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6027:
6028: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6029:
6030: <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>
6031:
6032: </dd>
6033:
6034: <dt>A start tag whose tag name is one of: "area", "basefont",
1.589 mike 6035: "bgsound", "br", "embed", "img", "input", "keygen", "wbr"</dt>
1.1 mike 6036: <dd>
6037:
6038: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6039: any.</p>
6040:
6041: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6042: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6043: elements</a>.</p>
6044:
6045: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6046: token's <i>self-closing flag</i></a>, if it is set.</p>
6047:
6048: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
1.589 mike 6049: shouldn't really do it for <area>, <basefont>, and <bgsound> -->
1.1 mike 6050:
6051: </dd>
6052:
6053: <dt>A start tag whose tag name is one of: "param", "source"</dt>
6054: <dd>
6055:
6056: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6057: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6058: elements</a>.</p>
6059:
6060: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6061: token's <i>self-closing flag</i></a>, if it is set.</p>
6062:
6063: </dd>
6064:
6065: <dt>A start tag whose tag name is "hr"</dt>
6066: <dd>
6067:
6068: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6069: an element in scope">has a <code>p</code> element in
6070: scope</a>, then act as if an end tag with the tag name
6071: "p" had been seen.</p>
6072:
6073: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6074: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6075: elements</a>.</p>
6076:
6077: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6078: token's <i>self-closing flag</i></a>, if it is set.</p>
6079:
6080: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6081:
6082: </dd>
6083:
6084: <dt>A start tag whose tag name is "image"</dt>
6085: <dd>
6086: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
6087: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
6088: 2005-12, studies showed that around 0.2% of pages used the
6089: <image> element. -->
6090: </dd>
6091:
6092: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
6093: <dd>
6094:
6095: <p><a href="#parse-error">Parse error</a>.</p>
6096:
6097: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
6098: pointer</a> is not null, then ignore the token.</p>
6099:
6100: <p>Otherwise:</p>
6101:
6102: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6103: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6104: purely to reduce the number of errors (we don't care if they
6105: included the /, they're not supposed to be including the tag at
6106: all! -->
6107:
6108: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6109:
6110: <p>If the token has an attribute called "action", set the
6111: <code title="attr-form-action">action</code> attribute on the
6112: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6113: "action" attribute of the token.</p>
6114:
6115: <p>Act as if a start tag token with the tag name "hr" had been
6116: seen.</p>
6117:
6118: <p>Act as if a start tag token with the tag name "label" had been
6119: seen.</p>
6120:
6121: <p>Act as if a stream of character tokens had been seen (see below
6122: for what they should say).</p>
6123:
6124: <p>Act as if a start tag token with the tag name "input" had been
6125: seen, with all the attributes from the "isindex" token except
6126: "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
6127: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6128:
6129: <p>Act as if a stream of character tokens had been seen (see
6130: below for what they should say).</p>
6131:
6132: <p>Act as if an end tag token with the tag name "label" had been
6133: seen.</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 an end tag token with the tag name "form" had been
6139: seen.</p>
6140:
6141: <p>If the token has an attribute with the name "prompt", then the
6142: first stream of characters must be the same string as given in
6143: that attribute, and the second stream of characters must be
6144: empty. Otherwise, the two streams of character tokens together
6145: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6146: equivalent of "This is a searchable index. Insert your search
6147: keywords here: (input field)" in the user's preferred
6148: language.</p>
6149:
6150: </dd>
6151:
6152: <dt>A start tag whose tag name is "textarea"</dt>
6153: <dd>
6154:
6155: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6156: token.</p></li>
6157:
6158: <li><p>If the next token is a U+000A LINE FEED (LF) character
6159: token, then ignore that token and move on to the next
6160: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6161: ignored as an authoring convenience.)</p></li>
6162:
1.671 mike 6163: <li><p>Switch the tokenizer to the <a href="#rcdata-state">RCDATA
1.541 mike 6164: state</a>.</p></li>
1.1 mike 6165:
6166: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6167: current <a href="#insertion-mode">insertion mode</a>.</p>
6168:
6169: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6170: ok".</p></li>
6171:
1.540 mike 6172: <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 6173:
6174: </ol></dd>
6175:
6176: <dt>A start tag whose tag name is "xmp"</dt>
6177: <dd>
6178:
1.233 mike 6179: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6180: an element in scope">has a <code>p</code> element in
6181: scope</a>, then act as if an end tag with the tag name
6182: "p" had been seen.</p>
6183:
1.1 mike 6184: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6185: any.</p>
6186:
6187: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6188:
1.91 mike 6189: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6190:
6191: </dd>
6192:
6193: <dt>A start tag whose tag name is "iframe"</dt>
6194: <dd>
6195:
6196: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6197:
1.91 mike 6198: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6199:
6200: </dd>
6201:
6202: <dt>A start tag whose tag name is "noembed"</dt>
6203: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6204: <dd>
6205:
1.91 mike 6206: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6207:
6208: </dd>
6209:
6210: <dt>A start tag whose tag name is "select"</dt>
6211: <dd>
6212:
6213: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6214: any.</p>
6215:
6216: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6217:
6218: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6219:
6220: <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>",
6221: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6222: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6223: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6224: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6225: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6226: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6227: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6228:
6229: </dd>
6230:
6231: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6232: <dd>
6233:
6234: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6235: element in scope">has an <code>option</code> element in
6236: scope</a>, then act as if an end tag with the tag name "option"
6237: had been seen.</p>
6238:
6239: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6240: any.</p>
6241:
6242: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6243:
6244: </dd>
6245:
6246: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6247: <dd>
6248:
6249: <!-- the parsing rules for ruby really don't match IE much at all,
6250: but in practice the markup used is very simple and so strict
6251: compatibility with IE isn't required. For example, as defined
6252: here we get very, very different behaviour than IE for
6253: pathological cases like:
6254:
6255: <ruby><ol><li><p>a<rt>b
6256: <ruby>a<rt>b<p>c
6257:
6258: But in practice most ruby markup falls into these cases:
6259:
6260: <ruby>a<rt>b</ruby>
6261: <ruby>a<rp>b<rt>c<rp>d</ruby>
6262: <ruby>a<rt>b</rt></ruby>
6263: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6264:
6265: -->
6266:
6267: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6268: element in scope">has a <code>ruby</code> element in scope</a>,
6269: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6270: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6271: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6272: node</a> up to the node immediately before the bottommost
6273: <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
6274: elements</a>.</p>
6275:
6276: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6277:
6278: </dd>
6279:
6280: <dt>An end tag whose tag name is "br"</dt>
6281: <dd>
6282: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6283: the tag name "br" had been seen. Ignore the end tag token.</p>
6284: </dd>
6285:
6286: <dt>A start tag whose tag name is "math"</dt>
6287: <dd>
6288:
6289: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6290: any.</p>
6291:
6292: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6293: fixes the case of MathML attributes that are not all
6294: lowercase.)</p>
6295:
6296: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6297: fixes the use of namespaced attributes, in particular XLink.)</p>
6298:
6299: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6300: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</p>
1.1 mike 6301:
6302: <!-- If we ever change the frameset-ok flag to an insertion mode,
6303: the following change would be implied, except we'd have to do it
6304: even in the face of a self-closed tag:
6305: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6306: -->
6307:
6308: <p>If the token has its <i>self-closing flag</i> set, pop the
6309: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6310: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6311: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6312:
6313: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6314: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6315: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6316: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6317: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6318: foreign content">in foreign content</a>".</p>
6319:
6320: </dd>
6321:
6322: <dt>A start tag whose tag name is "svg"</dt>
6323: <dd>
6324:
6325: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6326: any.</p>
6327:
6328: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6329: the case of SVG attributes that are not all lowercase.)</p>
6330:
6331: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6332: fixes the use of namespaced attributes, in particular XLink in
6333: SVG.)</p>
6334:
6335: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6336: <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</p>
1.1 mike 6337:
6338: <!-- If we ever change the frameset-ok flag to an insertion mode,
6339: the following change would be implied, except we'd have to do it
6340: even in the face of a self-closed tag:
6341: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6342: -->
6343:
6344: <p>If the token has its <i>self-closing flag</i> set, pop the
6345: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6346: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6347: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6348:
6349: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6350: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6351: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6352: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6353: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6354: foreign content">in foreign content</a>".</p>
6355:
6356: </dd>
6357:
6358: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6359: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6360: "thead", "tr"</dt>
6361: <!--<dt>An end tag whose tag name is one of: "area", "base",
6362: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6363: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
1.589 mike 6364: "noframes", "param", "script", "select", "source", "style",
6365: "table", "textarea", "title", "wbr"</dt>-->
1.1 mike 6366: <!--<dt>An end tag whose tag name is "noscript", if the
6367: <span>scripting flag</span> is enabled</dt>-->
6368: <dd>
6369: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6370: <!-- end tags are commented out because since they can never end
6371: up on the stack anyway, the default end tag clause will
6372: automatically handle them. we don't want to have text in the spec
6373: that is just an optimisation, as that detracts from the spec
6374: itself -->
6375: </dd>
6376:
6377: <dt>Any other start tag</dt>
6378: <dd>
6379:
6380: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6381: any.</p>
6382:
6383: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6384:
6385: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6386: element.</p>
6387:
6388: </dd>
6389:
6390: <dt>Any other end tag</dt>
6391: <dd>
6392:
6393: <p>Run the following steps:</p>
6394:
6395: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6396: node</a> (the bottommost node of the stack).</p></li>
6397:
6398: <li><p>If <var title="">node</var> has the same tag name as
6399: the end tag token, then:</p>
6400:
6401: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6402:
6403: <li><p>If the tag name of the end tag token does not match
6404: the tag name of the <a href="#current-node">current node</a>, this is a
6405: <a href="#parse-error">parse error</a>.</p></li>
6406:
6407: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6408: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6409:
6410: </ol></li>
6411:
6412: <li><p>Otherwise, if <var title="">node</var> is in neither the
6413: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6414: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6415: token, and abort these steps.</p></li>
6416:
6417: <li><p>Set <var title="">node</var> to the previous entry in the
6418: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6419:
6420: <li><p>Return to step 2.</p></li>
6421:
6422: </ol></dd>
6423:
1.724 mike 6424: </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 6425:
6426: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6427: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6428:
6429: <dl class="switch"><dt>A character token</dt>
6430: <dd>
6431:
6432: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6433: character</a> into the <a href="#current-node">current node</a>.</p>
6434:
6435: </dd>
6436:
6437: <dt>An end-of-file token</dt>
6438: <dd>
6439:
6440: <!-- can't be the fragment case -->
6441: <p><a href="#parse-error">Parse error</a>.</p>
6442:
6443: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6444: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6445: started"</a>.</p>
1.1 mike 6446:
6447: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6448: elements</a>.</p>
6449:
6450: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6451: insertion mode</a> and reprocess the current token.</p>
6452:
6453: </dd>
6454:
6455: <dt>An end tag whose tag name is "script"</dt>
6456: <dd>
6457:
6458: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6459: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6460:
6461: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6462: elements</a>.</p>
6463:
6464: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6465: insertion mode</a>.</p>
6466:
6467: <p>Let the <var title="">old insertion point</var> have the
6468: same value as the current <a href="#insertion-point">insertion point</a>. Let
6469: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6470: input character</a>.</p>
6471:
6472: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6473: one.</p>
6474:
6475: <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 6476: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6477: to be inserted into the tokenizer</a>, and might cause the
6478: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6479:
6480: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6481: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6482: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6483:
6484: <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
6485: <a href="#insertion-point">insertion point</a> to its previous value. This value
6486: might be the "undefined" value.)</p>
6487:
6488: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6489: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6490:
6491: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6492:
6493: <dd>
6494:
6495: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6496: processing of any nested invocations of the tokenizer, yielding
6497: control back to the caller. (Tokenization will resume when the
6498: caller returns to the "outer" tree construction stage.)</p>
6499:
6500: <p class="note">The tree construction stage of this particular
6501: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6502: 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 6503:
6504: </dd>
6505:
6506:
6507: <dt>Otherwise:</dt>
6508:
6509: <dd>
6510:
6511: <p>Follow these steps:</p>
6512:
1.484 mike 6513: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6514: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6515: parsing-blocking script</a>.</p></li>
6516:
6517: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6518: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6519: 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>
6520:
6521: <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
6522: scripts</a> and <var title="">the script</var>'s
6523: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6524:
6525: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6526: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6527: <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
6528: run.</p></li>
1.1 mike 6529:
6530: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6531: <a href="#next-input-character">next input character</a>.</p></li>
6532:
6533: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6534: by one (it should be zero before this step, so this sets it to
6535: one).</p></li>
6536:
1.484 mike 6537: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6538: <var title="">the script</var>.</p></li>
1.1 mike 6539:
6540: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6541: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6542: zero (which it always should be at this point), then set the
6543: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6544:
6545: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6546: again.</p></li>
6547:
1.484 mike 6548: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6549: script</a>, then repeat these steps from step 1.</p></li>
6550:
6551: </ol></dd>
6552:
6553: </dl></dd>
6554:
6555: <dt>Any other end tag</dt>
6556: <dd>
6557:
6558: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6559: elements</a>.</p>
6560:
6561: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6562: insertion mode</a>.</p>
6563:
6564: </dd>
6565:
1.724 mike 6566: </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 6567:
6568: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6569: mode: in table">in table</a>", tokens must be handled as follows:</p>
6570:
6571: <dl class="switch"><dt>A character token</dt>
6572: <dd>
6573:
6574: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6575: be an empty list of tokens.</p>
6576:
6577: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6578: <a href="#insertion-mode">insertion mode</a>.</p>
6579:
6580: <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
6581: reprocess the token.</p>
6582:
6583: </dd>
6584:
6585: <dt>A comment token</dt>
6586: <dd>
6587: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6588: node</a> with the <code title="">data</code> attribute set to
6589: the data given in the comment token.</p>
6590: </dd>
6591:
6592: <dt>A DOCTYPE token</dt>
6593: <dd>
6594: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6595: </dd>
6596:
6597: <dt>A start tag whose tag name is "caption"</dt>
6598: <dd>
6599:
6600: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6601: below.)</p>
6602:
6603: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6604: formatting elements</a>.</p>
6605:
6606: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6607: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6608:
6609: </dd>
6610:
6611: <dt>A start tag whose tag name is "colgroup"</dt>
6612: <dd>
6613:
6614: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6615: below.)</p>
6616:
6617: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6618: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6619: group</a>".</p>
6620:
6621: </dd>
6622:
6623: <dt>A start tag whose tag name is "col"</dt>
6624: <dd>
6625: <p>Act as if a start tag token with the tag name "colgroup"
6626: had been seen, then reprocess the current token.</p>
6627: </dd>
6628:
6629: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6630: <dd>
6631:
6632: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6633: below.)</p>
6634:
6635: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6636: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6637: body</a>".</p>
6638:
6639: </dd>
6640:
6641: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6642: <dd>
6643: <p>Act as if a start tag token with the tag name "tbody" had
6644: been seen, then reprocess the current token.</p>
6645: </dd>
6646:
6647: <dt>A start tag whose tag name is "table"</dt>
6648: <dd>
6649:
6650: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6651: the tag name "table" had been seen, then, if that token wasn't
6652: ignored, reprocess the current token.</p>
6653:
6654: <p class="note">The fake end tag token here can only be
6655: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6656:
6657: </dd>
6658:
6659: <dt>An end tag whose tag name is "table"</dt>
6660: <dd>
6661:
6662: <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
6663: scope</a> with the same tag name as the token, this is a
6664: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6665: case</a>)</p>
6666:
6667: <p>Otherwise:</p>
6668:
6669: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6670: element has been popped from the stack.</p>
6671:
6672: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6673:
6674: </dd>
6675:
6676: <dt>An end tag whose tag name is one of: "body", "caption",
6677: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6678: "thead", "tr"</dt>
6679: <dd>
6680: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6681: </dd>
6682:
6683: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6684: <dd>
6685:
6686: <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
6687: mode</a>.</p>
6688:
6689: </dd>
6690:
6691: <dt>A start tag whose tag name is "input"</dt>
6692: <dd>
6693:
6694: <p>If the token does not have an attribute with the name "type",
6695: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6696: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6697: else" entry below.</p>
6698:
6699: <p>Otherwise:</p>
6700:
6701: <p><a href="#parse-error">Parse error</a>.</p>
6702:
6703: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6704:
6705: <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
6706: open elements</a>.</p>
6707:
6708: </dd>
6709:
1.603 mike 6710: <dt>A start tag whose tag name is "form"</dt>
6711: <dd>
6712:
6713: <p><a href="#parse-error">Parse error</a>.</p>
6714:
1.717 mike 6715: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
6716: pointer</a> is not null, ignore the token.</p>
6717:
6718: <p>Otherwise:</p>
6719:
1.603 mike 6720: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6721:
1.637 mike 6722: <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 6723: open elements</a>.</p>
6724:
6725: </dd>
6726:
1.721 mike 6727: <!-- "form" end tag falls through to in-body, which does the right thing -->
1.717 mike 6728:
1.1 mike 6729: <dt>An end-of-file token</dt>
6730: <dd>
6731:
6732: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6733: <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 6734: error</a>.</p>
6735:
6736: <p class="note">It can only be the <a href="#current-node">current node</a> in
6737: the <a href="#fragment-case">fragment case</a>.</p>
6738:
6739: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6740:
6741: </dd>
6742:
6743: <dt>Anything else</dt>
6744: <dd>
6745:
6746: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6747: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6748: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6749: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6750: <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
6751: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6752: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6753:
6754: </dd>
6755:
6756: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6757: back to a table context</dfn>, it means that the UA must, while
6758: 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 6759: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6760: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6761:
6762: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6763: <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 6764: case</a>.</p>
6765:
6766:
6767:
1.724 mike 6768: <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 6769:
6770: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6771: mode: in table text">in table text</a>", tokens must be handled
6772: as follows:</p>
6773:
6774: <dl class="switch"><dt>A character token</dt>
6775: <dd>
6776:
6777: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6778: tokens</a></var> list.</p>
6779:
6780: </dd>
6781:
6782:
6783: <dt>Anything else</dt>
6784: <dd>
6785:
6786: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6787: tokens</a></var> list are character tokens that are not one of U+0009
6788: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6789: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6790: reprocess those character tokens using the rules given in the
6791: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6792: table">in table</a>" insertion mode.</p>
6793:
6794: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6795: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6796: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6797:
6798: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6799: insertion mode</a> and reprocess the token.</p>
6800:
6801: </dd>
6802:
1.724 mike 6803: </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 6804:
6805: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6806: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6807:
6808: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6809: <dd>
6810:
6811: <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
6812: scope</a> with the same tag name as the token, this is a
6813: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6814: case</a>)</p>
6815:
6816: <p>Otherwise:</p>
6817:
6818: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6819:
6820: <p>Now, if the <a href="#current-node">current node</a> is not a
6821: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6822: error</a>.</p>
6823:
6824: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6825: element has been popped from the stack.</p>
6826:
6827: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6828: the last marker</a>.</p>
6829:
6830: <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>
6831:
6832: </dd>
6833:
6834: <dt>A start tag whose tag name is one of: "caption", "col",
6835: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6836: <dt>An end tag whose tag name is "table"</dt>
6837: <dd>
6838:
6839: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6840: name "caption" had been seen, then, if that token wasn't
6841: ignored, reprocess the current token.</p>
6842:
6843: <p class="note">The fake end tag token here can only be
6844: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6845:
6846: </dd>
6847:
6848: <dt>An end tag whose tag name is one of: "body", "col",
6849: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6850: "tr"</dt>
6851: <dd>
6852: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6853: </dd>
6854:
6855: <dt>Anything else</dt>
6856: <dd>
6857: <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
6858: mode</a>.</p>
6859: </dd>
6860:
1.724 mike 6861: </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 6862:
6863: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6864: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6865:
6866: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6867: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6868: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6869: <dd>
6870: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6871: the <a href="#current-node">current node</a>.</p>
6872: </dd>
6873:
6874: <dt>A comment token</dt>
6875: <dd>
6876: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6877: node</a> with the <code title="">data</code> attribute set to
6878: the data given in the comment token.</p>
6879: </dd>
6880:
6881: <dt>A DOCTYPE token</dt>
6882: <dd>
6883: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6884: </dd>
6885:
6886: <dt>A start tag whose tag name is "html"</dt>
6887: <dd>
6888: <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
6889: mode</a>.</p>
6890: </dd>
6891:
6892: <dt>A start tag whose tag name is "col"</dt>
6893: <dd>
6894:
6895: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6896: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6897: elements</a>.</p>
6898:
6899: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6900: token's <i>self-closing flag</i></a>, if it is set.</p>
6901:
6902: </dd>
6903:
6904: <dt>An end tag whose tag name is "colgroup"</dt>
6905: <dd>
6906:
6907: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6908: <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 6909: error</a>; ignore the token. (<a href="#fragment-case">fragment
6910: case</a>)</p>
6911:
6912: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6913: 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
6914: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6915: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6916:
6917: </dd>
6918:
6919: <dt>An end tag whose tag name is "col"</dt>
6920: <dd>
6921: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6922: </dd>
6923:
6924: <dt>An end-of-file token</dt>
6925: <dd>
6926:
1.159 mike 6927: <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 6928: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6929: case</a>)</p>
6930:
6931: <p>Otherwise, act as described in the "anything else" entry
6932: below.</p>
6933:
6934: </dd>
6935:
6936: <dt>Anything else</dt>
6937: <dd>
6938:
6939: <p>Act as if an end tag with the tag name "colgroup" had been
6940: seen, and then, if that token wasn't ignored, reprocess the
6941: current token.</p>
6942:
6943: <p class="note">The fake end tag token here can only be
6944: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6945:
6946: </dd>
6947:
1.724 mike 6948: </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 6949:
6950: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6951: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6952:
6953: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6954: <dd>
6955:
6956: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6957: context</a>. (See below.)</p>
6958:
6959: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6960: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6961: in row">in row</a>".</p>
6962:
6963: </dd>
6964:
6965: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6966: <dd>
6967: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6968: the tag name "tr" had been seen, then reprocess the current
6969: token.</p>
6970: </dd>
6971:
6972: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6973: "thead"</dt>
6974: <dd>
6975:
6976: <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
6977: scope</a> with the same tag name as the token, this is a
6978: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6979:
6980: <p>Otherwise:</p>
6981:
6982: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6983: context</a>. (See below.)</p>
6984:
6985: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
6986: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
6987: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6988:
6989: </dd>
6990:
6991: <dt>A start tag whose tag name is one of: "caption", "col",
6992: "colgroup", "tbody", "tfoot", "thead"</dt>
6993: <dt>An end tag whose tag name is "table"</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 a
6997: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
6998: element in table scope</a>, this is a <a href="#parse-error">parse
6999: error</a>. Ignore the token. (<a href="#fragment-case">fragment
7000: case</a>)</p>
7001:
7002: <p>Otherwise:</p>
7003:
7004: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7005: context</a>. (See below.)</p>
7006:
7007: <p>Act as if an end tag with the same tag name as the
7008: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
7009: been seen, then reprocess the current token.</p>
7010:
7011: </dd>
7012:
7013: <dt>An end tag whose tag name is one of: "body", "caption",
7014: "col", "colgroup", "html", "td", "th", "tr"</dt>
7015: <dd>
7016: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7017: </dd>
7018:
7019: <dt>Anything else</dt>
7020: <dd>
7021: <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
7022: mode</a>.</p>
7023: </dd>
7024:
7025: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
7026: back to a table body context</dfn>, it means that the UA must,
7027: 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 7028: <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 7029: element, pop elements from the <a href="#stack-of-open-elements">stack of open
7030: elements</a>.</p>
7031:
7032: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7033: <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 7034: case</a>.</p>
7035:
7036:
1.724 mike 7037: <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 7038:
7039: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
7040: mode: in row">in row</a>", tokens must be handled as follows:</p>
7041:
7042: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
7043: <dd>
7044:
7045: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7046: context</a>. (See below.)</p>
7047:
7048: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
7049: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
7050: in cell">in cell</a>".</p>
7051:
7052: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
7053: formatting elements</a>.</p>
7054:
7055: </dd>
7056:
7057: <dt>An end tag whose tag name is "tr"</dt>
7058: <dd>
7059:
7060: <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
7061: scope</a> with the same tag name as the token, this is a
7062: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7063: case</a>)</p>
7064:
7065: <p>Otherwise:</p>
7066:
7067: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7068: context</a>. (See below.)</p>
7069:
7070: <p>Pop the <a href="#current-node">current node</a> (which will be a
7071: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
7072: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
7073: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
7074: body</a>".</p>
7075:
7076: </dd>
7077:
7078: <dt>A start tag whose tag name is one of: "caption", "col",
7079: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
7080: <dt>An end tag whose tag name is "table"</dt>
7081: <dd>
7082:
7083: <p>Act as if an end tag with the tag name "tr" had been seen,
7084: then, if that token wasn't ignored, reprocess the current
7085: token.</p>
7086:
7087: <p class="note">The fake end tag token here can only be
7088: ignored in the <a href="#fragment-case">fragment case</a>.</p>
7089:
7090: </dd>
7091:
7092: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
7093: "thead"</dt>
7094: <dd>
7095:
7096: <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
7097: scope</a> with the same tag name as the token, this is a
7098: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7099:
7100: <p>Otherwise, act as if an end tag with the tag name "tr" had
7101: been seen, then reprocess the current token.</p>
7102:
7103: </dd>
7104:
7105: <dt>An end tag whose tag name is one of: "body", "caption",
7106: "col", "colgroup", "html", "td", "th"</dt>
7107: <dd>
7108: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7109: </dd>
7110:
7111: <dt>Anything else</dt>
7112: <dd>
7113: <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
7114: mode</a>.</p>
7115: </dd>
7116:
7117: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
7118: back to a table row context</dfn>, it means that the UA must,
7119: 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 7120: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 7121: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7122:
7123: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7124: <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 7125: case</a>.</p>
7126:
7127:
1.724 mike 7128: <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 7129:
7130: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7131: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7132:
7133: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7134: <dd>
7135:
7136: <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
7137: scope</a> with the same tag name as that of the token, then
7138: this is a <a href="#parse-error">parse error</a> and the token must be
7139: ignored.</p>
7140:
7141: <p>Otherwise:</p>
7142:
7143: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7144:
7145: <p>Now, if the <a href="#current-node">current node</a> is not an element
7146: with the same tag name as the token, then this is a
7147: <a href="#parse-error">parse error</a>.</p>
7148:
7149: <p>Pop elements from this stack until an element with the same
7150: tag name as the token has been popped from the stack.</p>
7151:
7152: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7153: the last marker</a>.</p>
7154:
7155: <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
7156: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7157: this point.)</p>
7158:
7159: </dd>
7160:
7161: <dt>A start tag whose tag name is one of: "caption", "col",
7162: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7163: <dd>
7164:
7165: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7166: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7167: a <code>td</code> or <code>th</code> element in table
7168: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7169: the token. (<a href="#fragment-case">fragment case</a>)</p>
7170:
7171: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7172: reprocess the current token.</p>
7173:
7174: </dd>
7175:
7176: <dt>An end tag whose tag name is one of: "body", "caption",
7177: "col", "colgroup", "html"</dt>
7178: <dd>
7179: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7180: </dd>
7181:
7182: <dt>An end tag whose tag name is one of: "table", "tbody",
7183: "tfoot", "thead", "tr"</dt>
7184: <dd>
7185:
7186: <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
7187: scope</a> with the same tag name as that of the token
7188: (which can only happen for "tbody", "tfoot" and "thead", or,
7189: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7190: error</a> and the token must be ignored.</p>
7191:
7192: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7193: reprocess the current token.</p>
7194:
7195: </dd>
7196:
7197: <dt>Anything else</dt>
7198: <dd>
7199: <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
7200: mode</a>.</p>
7201: </dd>
7202:
7203: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7204: mean to run the following algorithm:</p>
7205:
7206: <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>
7207: element in table scope</a>, then act as if an end tag token
7208: with the tag name "td" had been seen.</p></li>
7209:
7210: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7211: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7212: <code>th</code> element in table scope</a>; act as if an end
7213: tag token with the tag name "th" had been seen.</p></li>
7214:
7215: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7216: 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
7217: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7218: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7219: cell</a>".</p>
7220:
7221:
1.724 mike 7222: <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 7223:
7224: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7225: mode: in select">in select</a>", tokens must be handled as follows:</p>
7226:
7227: <dl class="switch"><dt>A character token</dt>
7228: <dd>
7229: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7230: character</a> into the <a href="#current-node">current node</a>.</p>
7231: </dd>
7232:
7233: <dt>A comment token</dt>
7234: <dd>
7235: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7236: node</a> with the <code title="">data</code> attribute set to
7237: the data given in the comment token.</p>
7238: </dd>
7239:
7240: <dt>A DOCTYPE token</dt>
7241: <dd>
7242: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7243: </dd>
7244:
7245: <dt>A start tag whose tag name is "html"</dt>
7246: <dd>
7247: <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
7248: mode</a>.</p>
7249: </dd>
7250:
7251: <dt>A start tag whose tag name is "option"</dt>
7252: <dd>
7253:
7254: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7255: element, act as if an end tag with the tag name "option" had
7256: been seen.</p>
7257:
7258: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7259:
7260: </dd>
7261:
7262: <dt>A start tag whose tag name is "optgroup"</dt>
7263: <dd>
7264:
7265: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7266: element, act as if an end tag with the tag name "option" had
7267: been seen.</p>
7268:
7269: <p>If the <a href="#current-node">current node</a> is an
7270: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7271: tag name "optgroup" had been seen.</p>
7272:
7273: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7274:
7275: </dd>
7276:
7277: <dt>An end tag whose tag name is "optgroup"</dt>
7278: <dd>
7279:
7280: <p>First, if the <a href="#current-node">current node</a> is an
7281: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7282: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7283: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7284: the tag name "option" had been seen.</p>
7285:
7286: <p>If the <a href="#current-node">current node</a> is an
7287: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7288: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7289: <a href="#parse-error">parse error</a>; ignore the token.</p>
7290:
7291: </dd>
7292:
7293: <dt>An end tag whose tag name is "option"</dt>
7294: <dd>
7295:
7296: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7297: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7298: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7299: error</a>; ignore the token.</p>
7300:
7301: </dd>
7302:
7303: <dt>An end tag whose tag name is "select"</dt>
7304: <dd>
7305:
7306: <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
7307: scope</a> with the same tag name as the token, this is a
7308: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7309: case</a>)</p>
7310:
7311: <p>Otherwise:</p>
7312:
7313: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7314: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7315: stack.</p>
7316:
7317: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7318:
7319: </dd>
7320:
7321: <dt>A start tag whose tag name is "select"</dt>
7322: <dd>
7323:
7324: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7325: an end tag with the tag name "select" instead.</p>
7326:
7327: </dd>
7328:
7329: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7330: <dd>
1.73 mike 7331:
7332: <p><a href="#parse-error">Parse error</a>.</p>
7333:
1.124 mike 7334: <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>
7335: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7336: case</a>)</p>
1.73 mike 7337:
7338: <p>Otherwise, act as if an end tag with the tag name "select" had
7339: been seen, and reprocess the token.</p>
7340:
1.1 mike 7341: </dd>
7342:
7343: <dt>A start tag token whose tag name is "script"</dt>
7344: <dd>
7345: <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
7346: mode</a>.</p>
7347: </dd>
7348:
7349: <dt>An end-of-file token</dt>
7350: <dd>
7351:
7352: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7353: <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 7354: error</a>.</p>
7355:
7356: <p class="note">It can only be the <a href="#current-node">current node</a> in
7357: the <a href="#fragment-case">fragment case</a>.</p>
7358:
7359: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7360:
7361: </dd>
7362:
7363: <dt>Anything else</dt>
7364: <dd>
7365: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7366: </dd>
7367:
1.724 mike 7368: </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 7369:
7370: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7371: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7372:
7373: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7374: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7375: <dd>
7376: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7377: name "select" had been seen, and reprocess the token.</p>
7378: </dd>
7379:
7380: <dt>An end tag whose tag name is one of: "caption", "table",
7381: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7382: <dd>
7383:
7384: <p><a href="#parse-error">Parse error</a>.</p>
7385:
7386: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7387: element in table scope</a> with the same tag name as that
7388: of the token, then act as if an end tag with the tag name
7389: "select" had been seen, and reprocess the token. Otherwise,
7390: ignore the token.</p>
7391:
7392: </dd>
7393:
7394: <dt>Anything else</dt>
7395: <dd>
7396: <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
7397: mode</a>.</p>
7398: </dd>
7399:
1.724 mike 7400: </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 7401:
7402: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7403: mode: in foreign content">in foreign content</a>", tokens must be
7404: handled as follows:</p>
7405:
7406: <dl class="switch"><dt>A character token</dt>
7407: <dd>
7408:
7409: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7410: character</a> into the <a href="#current-node">current node</a>.</p>
7411:
7412: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7413: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7414: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7415: flag</a> to "not ok".</p>
7416:
7417: </dd>
7418:
7419: <dt>A comment token</dt>
7420: <dd>
7421: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7422: node</a> with the <code title="">data</code> attribute set to
7423: the data given in the comment token.</p>
7424: </dd>
7425:
7426: <dt>A DOCTYPE token</dt>
7427: <dd>
7428: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7429: </dd>
7430:
1.724 mike 7431: <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 7432: <dd>
7433:
7434: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7435: elements</a>.</p>
7436:
7437: <p>Let the <var title="">old insertion point</var> have the
7438: same value as the current <a href="#insertion-point">insertion point</a>. Let
7439: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7440: input character</a>.</p>
7441:
7442: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7443: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7444:
7445: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7446: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7447: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7448:
1.159 mike 7449: <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 7450: tokenizer</a>, the parser will not be executed reentrantly,
7451: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7452:
7453: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7454: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7455: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7456:
7457: <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
7458: <a href="#insertion-point">insertion point</a> to its previous value. This value
7459: might be the "undefined" value.)</p>
7460:
7461: </dd>
7462:
1.724 mike 7463: <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>
7464: <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>
7465: <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>
7466: <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>
7467: <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>
7468: <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>
7469: <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>
7470: <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>
7471: <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>
7472: <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 7473: <dt>An end tag</dt>
7474: <dd>
7475:
7476: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7477: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7478:
7479: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7480: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7481: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7482: element in scope">in scope</a> that has a namespace other than
1.724 mike 7483: the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7484: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7485:
7486: </dd>
7487:
7488: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7489: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7490: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7491: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7492: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7493: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7494: "li", "listing"<!-- so that pre and listing can be handled
7495: uniformly throughout the parser -->, "menu", "meta", "nobr",
7496: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7497: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7498: "span", "strong", "strike"<!-- so that s and strike can be handled
7499: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7500: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7501: list was determined empirically by studying over 6,000,000,000
1.422 mike 7502: pages that were specifically not XML pages -->
7503: <dt>A start tag whose tag name is "font", if the token has any
7504: attributes named "color", "face", or "size"</dt> <!-- the
7505: attributes here are required so that SVG <font> will go through as
7506: SVG but legacy <font>s won't -->
7507: <dt>An end-of-file token</dt> <dd>
1.1 mike 7508:
7509: <p><a href="#parse-error">Parse error</a>.</p>
7510:
7511: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
1.724 mike 7512: the <a href="#current-node">current node</a> is in the <a href="infrastructure.html#html-namespace-0">HTML
1.1 mike 7513: namespace</a>.</p>
7514:
7515: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7516: insertion mode</a>, and reprocess the token.</p>
7517:
7518: </dd>
7519:
7520: <dt>Any other start tag</dt>
7521: <dd>
7522:
7523: <p>If the <a href="#current-node">current node</a> is an element in the
1.724 mike 7524: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
1.1 mike 7525: attributes</a> for the token. (This fixes the case of MathML
7526: attributes that are not all lowercase.)</p>
7527:
1.724 mike 7528: <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 7529: namespace</a>, and the token's tag name is one of the ones in
7530: the first column of the following table, change the tag name to
7531: the name given in the corresponding cell in the second
7532: column. (This fixes the case of SVG elements that are not all
7533: lowercase.)</p>
7534:
7535: <table><thead><tr><th> Tag name </th><th> Element name
7536: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7537: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7538: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7539: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7540: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7541: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7542: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7543: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7544: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7545: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7546: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7547: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7548: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7549: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7550: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7551: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7552: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7553: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7554: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7555: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7556: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7557: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7558: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7559: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7560: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7561: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7562: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7563: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7564: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7565: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7566: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7567: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7568: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7569: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7570: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7571: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7572: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
1.724 mike 7573: </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 7574: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7575: token. (This fixes the case of SVG attributes that are not all
7576: lowercase.)</p>
7577:
7578: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7579: fixes the use of namespaced attributes, in particular XLink in
7580: SVG.)</p>
7581:
7582: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7583: same namespace as the <a href="#current-node">current node</a>.</p>
7584:
7585: <p>If the token has its <i>self-closing flag</i> set, pop the
7586: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7587: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7588: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7589:
7590: </dd>
7591:
1.724 mike 7592: </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 7593:
7594: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7595: mode: after body">after body</a>", tokens must be handled as follows:</p>
7596:
7597: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7598: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7599: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7600: <dd>
7601: <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
7602: mode</a>.</p>
7603: </dd>
7604:
7605: <dt>A comment token</dt>
7606: <dd>
7607: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7608: 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 7609: element), with the <code title="">data</code> attribute set to
7610: the data given in the comment token.</p>
7611: </dd>
7612:
7613: <dt>A DOCTYPE token</dt>
7614: <dd>
7615: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7616: </dd>
7617:
7618: <dt>A start tag whose tag name is "html"</dt>
7619: <dd>
7620: <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
7621: mode</a>.</p>
7622: </dd>
7623:
7624: <dt>An end tag whose tag name is "html"</dt>
7625: <dd>
7626:
7627: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7628: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7629: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7630:
7631: <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
7632: body</a>".</p>
7633:
7634: </dd>
7635:
7636: <dt>An end-of-file token</dt>
7637: <dd>
7638: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7639: </dd>
7640:
7641: <dt>Anything else</dt>
7642: <dd>
7643:
7644: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7645: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7646: body</a>" and reprocess the token.</p>
7647:
7648: </dd>
7649:
1.724 mike 7650: </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 7651:
7652: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7653: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7654:
7655: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7656: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7657: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7658: <dd>
7659: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7660: the <a href="#current-node">current node</a>.</p>
7661: </dd>
7662:
7663: <dt>A comment token</dt>
7664: <dd>
7665: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7666: node</a> with the <code title="">data</code> attribute set to
7667: the data given in the comment token.</p>
7668: </dd>
7669:
7670: <dt>A DOCTYPE token</dt>
7671: <dd>
7672: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7673: </dd>
7674:
7675: <dt>A start tag whose tag name is "html"</dt>
7676: <dd>
7677: <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
7678: mode</a>.</p>
7679: </dd>
7680:
7681: <dt>A start tag whose tag name is "frameset"</dt>
7682: <dd>
7683: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7684: </dd>
7685:
7686: <dt>An end tag whose tag name is "frameset"</dt>
7687: <dd>
7688:
7689: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7690: <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 7691: error</a>; ignore the token. (<a href="#fragment-case">fragment
7692: case</a>)</p>
7693:
7694: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7695: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7696:
7697: <p>If the parser was <em>not</em> originally created as part
7698: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7699: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7700: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7701: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7702: frameset</a>".</p>
7703:
7704: </dd>
7705:
7706: <dt>A start tag whose tag name is "frame"</dt>
7707: <dd>
7708:
7709: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7710: Immediately pop the <a href="#current-node">current node</a> off the
7711: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7712:
7713: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7714: token's <i>self-closing flag</i></a>, if it is set.</p>
7715:
7716: </dd>
7717:
7718: <dt>A start tag whose tag name is "noframes"</dt>
7719: <dd>
7720: <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
7721: mode</a>.</p>
7722: </dd>
7723:
7724: <dt>An end-of-file token</dt>
7725: <dd>
7726:
7727: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7728: <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 7729: error</a>.</p>
7730:
7731: <p class="note">It can only be the <a href="#current-node">current node</a> in
7732: the <a href="#fragment-case">fragment case</a>.</p>
7733:
7734: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7735:
7736: </dd>
7737:
7738: <dt>Anything else</dt>
7739: <dd>
7740: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7741: </dd>
7742:
1.724 mike 7743: </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 7744:
7745: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7746: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7747:
7748: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7749: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7750: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7751: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7752: <dd>
7753: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7754: the <a href="#current-node">current node</a>.</p>
7755: </dd>
7756:
7757: <dt>A comment token</dt>
7758: <dd>
7759: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7760: node</a> with the <code title="">data</code> attribute set to
7761: the data given in the comment token.</p>
7762: </dd>
7763:
7764: <dt>A DOCTYPE token</dt>
7765: <dd>
7766: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7767: </dd>
7768:
7769: <dt>A start tag whose tag name is "html"</dt>
7770: <dd>
7771: <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
7772: mode</a>.</p>
7773: </dd>
7774:
7775: <dt>An end tag whose tag name is "html"</dt>
7776: <dd>
7777: <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
7778: frameset</a>".</p>
7779: </dd>
7780:
7781: <dt>A start tag whose tag name is "noframes"</dt>
7782: <dd>
7783: <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
7784: mode</a>.</p>
7785: </dd>
7786:
7787: <dt>An end-of-file token</dt>
7788: <dd>
7789: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7790: </dd>
7791:
7792: <dt>Anything else</dt>
7793: <dd>
7794: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7795: </dd>
7796:
1.724 mike 7797: </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 7798:
7799: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7800: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7801:
7802: <dl class="switch"><dt>A comment token</dt>
7803: <dd>
7804: <p>Append a <code>Comment</code> node to the <code>Document</code>
7805: object with the <code title="">data</code> attribute set to the
7806: data given in the comment token.</p>
7807: </dd>
7808:
7809: <dt>A DOCTYPE token</dt>
7810: <dt>A character token that is one of U+0009 CHARACTER
7811: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7812: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7813: <dt>A start tag whose tag name is "html"</dt>
7814: <dd>
7815: <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
7816: mode</a>.</p>
7817: </dd>
7818:
7819: <dt>An end-of-file token</dt>
7820: <dd>
7821: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7822: </dd>
7823:
7824: <dt>Anything else</dt>
7825: <dd>
7826: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7827: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7828: reprocess the token.</p>
7829: </dd>
7830:
1.724 mike 7831: </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 7832:
7833: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7834: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7835:
7836: <dl class="switch"><dt>A comment token</dt>
7837: <dd>
7838: <p>Append a <code>Comment</code> node to the <code>Document</code>
7839: object with the <code title="">data</code> attribute set to the
7840: data given in the comment token.</p>
7841: </dd>
7842:
7843: <dt>A DOCTYPE token</dt>
7844: <dt>A character token that is one of U+0009 CHARACTER
7845: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7846: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7847: <dt>A start tag whose tag name is "html"</dt>
7848: <dd>
7849: <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
7850: mode</a>.</p>
7851: </dd>
7852:
7853: <dt>An end-of-file token</dt>
7854: <dd>
7855: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7856: </dd>
7857:
7858: <dt>A start tag whose tag name is "noframes"</dt>
7859: <dd>
7860: <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
7861: mode</a>.</p>
7862: </dd>
7863:
7864: <dt>Anything else</dt>
7865: <dd>
7866: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7867: </dd>
7868:
1.266 mike 7869: </dl></div><div class="impl">
7870:
1.724 mike 7871: <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 7872:
7873: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7874: the document, the user agent must run the following steps:</p>
1.1 mike 7875:
1.484 mike 7876: <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
7877: "interactive" <!-- this also synchronously fires an event --> and
7878: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7879:
7880: <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
7881: document has finished parsing</a> is not empty, run these
7882: substeps:</p>
7883:
7884: <ol><li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the first
7885: <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
7886: execute when the document has finished parsing</a> has its
7887: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7888: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7889: blocking scripts</a>.</p></li>
7890:
7891: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7892: 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
7893: execute when the document has finished parsing</a>.</p></li>
7894:
7895: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7896: <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
7897: finished parsing</a> (i.e. shift out the first entry in the
7898: list).</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 still not empty, repeat
7902: these substeps again from substep 1.</p>
7903:
7904: </li></ol></li>
7905:
1.671 mike 7906: <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 7907: scripts that will execute as soon as possible</a> is
7908: empty.</p></li>
7909:
7910: <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
7911: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7912: <code>Document</code>.</p></li>
7913:
7914: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
7915: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7916: the <code>Document</code>.</p></li>
7917:
7918: <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
7919: readiness</a> to "complete". <!-- this also fires an event
7920: synchronously during the task --></p></li>
1.1 mike 7921:
1.484 mike 7922: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.1 mike 7923: 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 7924: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7925: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7926: its <code title="dom-event-target">target</code> set to the
7927: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7928: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7929:
1.569 mike 7930: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
7931: 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
7932: simple event</a> named <code title="event-pageshow">pageshow</code> at the
7933: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object.</p></li>
7934:
1.484 mike 7935: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.651 mike 7936: 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 7937: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7938: <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
7939: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7940: must bubble but not be cancelable and has no default
7941: action.</p></li>
1.1 mike 7942:
1.725 mike 7943: <li><p>If the <code>Document</code> has any <a href="offline.html#pending-application-cache-download-process-tasks">pending
7944: 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
7945: the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application cache download process
7946: tasks</a>, and then empty the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application
7947: cache download process tasks</a>. The <a href="browsers.html#task-source">task source</a>
7948: for these <a href="browsers.html#concept-task" title="concept-task">tasks</a> is the
7949: <a href="browsers.html#networking-task-source">networking task source</a>.</p></li>
7950:
7951: <li><p>The <code>Document</code> is now <dfn id="completely-loaded">completely
7952: loaded</dfn>.</p></li>
7953:
7954: </ol><p>Except where otherwise specified, the <a href="browsers.html#task-source">task source</a>
7955: for the <a href="browsers.html#concept-task" title="concept-task">tasks</a> mentioned in this
7956: section is the <a href="browsers.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7957:
1.266 mike 7958: </div><div class="impl">
1.1 mike 7959:
1.724 mike 7960: <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 7961:
7962: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7963: conjunction with an XML pipeline, it is possible that the
7964: constructed DOM is not compatible with the XML tool chain in certain
7965: subtle ways. For example, an XML toolchain might not be able to
7966: represent attributes with the name <code title="">xmlns</code>,
7967: since they conflict with the Namespaces in XML syntax. There is also
7968: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7969: included in the DOM itself. This section specifies some rules for
7970: handling these issues.</p>
7971:
7972: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7973: drop DOCTYPEs altogether.</p>
7974:
7975: <p>If the XML API doesn't support attributes in no namespace that
7976: are named "<code title="">xmlns</code>", attributes whose names
7977: start with "<code title="">xmlns:</code>", or attributes in the
1.724 mike 7978: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
1.1 mike 7979: attributes.</p>
7980:
7981: <p>The tool may annotate the output with any namespace declarations
7982: required for proper operation.</p>
7983:
7984: <p>If the XML API being used restricts the allowable characters in
7985: the local names of elements and attributes, then the tool may map
7986: all element and attribute local names that the API wouldn't support
7987: to a set of names that <em>are</em> allowed, by replacing any
7988: character that isn't supported with the uppercase letter U and the
7989: six digits of the character's Unicode code point when expressed in
7990: hexadecimal, using digits 0-9 and capital letters A-F as the
7991: symbols, in increasing numeric order.</p>
7992:
7993: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
7994: parser</a>, though it is neither a legal HTML element name nor a
7995: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
7996: element name (though it's still not legal in HTML by any means).</p>
7997:
7998: <p class="example">As another example, consider the attribute
7999: <code>xlink:href</code>. Used on a MathML element, it becomes, after
8000: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
8001: attribute with a prefix "<code title="">xlink</code>" and a local
8002: name "<code title="">href</code>". However, used on an HTML element,
8003: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
8004: might not be accepted by an XML API. It could thus get converted,
8005: becoming "<code title="">xlinkU00003Ahref</code>".</p>
8006:
8007: <p class="note">The resulting names from this conversion
8008: conveniently can't clash with any attribute generated by the
8009: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
8010: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
8011: algorithm's table.</p>
8012:
8013: <p>If the XML API restricts comments from having two consecutive
8014: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
8015: U+0020 SPACE character between any such offending characters.</p>
8016:
8017: <p>If the XML API restricts comments from ending in a
8018: U+002D HYPHEN-MINUS character (-), the tool may insert a single
8019: U+0020 SPACE character at the end of such comments.</p>
8020:
8021: <p>If the XML API restricts allowed characters in character data,
1.439 mike 8022: attribute values, or comments, the tool may replace any U+000C FORM
8023: FEED (FF) character with a U+0020 SPACE character, and any other
8024: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 8025:
8026: <p>If the tool has no way to convey out-of-band information, then
8027: the tool may drop the following information:</p>
8028:
8029: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
8030: <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>
8031:
8032: <li>The association between form controls and forms that aren't
8033: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
8034: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
8035:
8036: </ul><p class="note">The mutations allowed by this section apply
8037: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
8038: applied. For example, a <code title=""><a::></code> start tag
8039: will be closed by a <code title=""></a::></code> end tag, and
8040: never by a <code title=""></aU00003AU00003A></code> end tag, even
8041: if the user agent is using the rules above to then generate an
8042: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
8043:
1.266 mike 8044: </div><div class="impl">
1.1 mike 8045:
1.724 mike 8046: <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 8047:
8048: <p><i>This section is non-normative.</i></p>
8049:
8050: <p>This section examines some erroneous markup and discusses how
8051: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
8052:
8053:
1.724 mike 8054: <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 8055:
8056: <p><i>This section is non-normative.</i></p>
8057:
8058: <p>The most-often discussed example of erroneous markup is as
8059: follows:</p>
8060:
8061: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
8062:
8063: <p>The parsing of this markup is straightforward up to the "3". At
8064: this point, the DOM looks like this:</p>
8065:
1.159 mike 8066: <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
8067: 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 8068: <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
8069: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
8070: <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>
8071:
8072: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
8073: invoked. This is a simple case, in that the <var title="">formatting
8074: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
8075: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8076: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8077: <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 8078: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
8079: DOM tree is unmodified at this point.</p>
8080:
8081: <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
8082: the active formatting elements</a>, in this case just the
8083: <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
8084: for the "4" text node. After the end tag token for the "i" is also
8085: received, and the "5" text node is inserted, the DOM looks as
8086: follows:</p>
8087:
1.724 mike 8088: <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 8089:
8090: <p><i>This section is non-normative.</i></p>
8091:
8092: <p>A case similar to the previous one is the following:</p>
8093:
8094: <pre><b>1<p>2</b>3</p></pre>
8095:
8096: <p>Up to the "2" the parsing here is straightforward:</p>
8097:
1.159 mike 8098: <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 8099: "b" is parsed.</p>
8100:
8101: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8102: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8103: <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 8104: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
8105: <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>
8106:
8107: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
8108: in the previous example. However, in this case, there <em>is</em> a
8109: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
8110: this time the adoption agency algorithm isn't skipped over.</p>
8111:
1.159 mike 8112: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 8113: element. A conceptual "bookmark" marks the position of the
8114: <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
8115: elements</a>, but since that list has only one element in it,
8116: it won't have much effect.</p>
8117:
8118: <p>As the algorithm progresses, <var title="">node</var> ends up set
8119: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
8120: node</var> ends up set to the <var title="">furthest block</var>
8121: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
8122:
8123: <p>The <var title="">last node</var> gets appended (moved) to the
8124: <var title="">common ancestor</var>, so that the DOM looks like:</p>
8125:
1.159 mike 8126: <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 8127: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
8128:
1.159 mike 8129: <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 8130: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
8131:
1.159 mike 8132: <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 8133: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8134: elements</a>, so that when the "3" is parsed, it is appended to
8135: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8136:
1.724 mike 8137: <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 8138:
8139: <p><i>This section is non-normative.</i></p>
8140:
8141: <p>Error handling in tables is, for historical reasons, especially
8142: strange. For example, consider the following markup:</p>
8143:
8144: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8145:
8146: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8147: directly inside a table like that, and the parser handles this case
8148: 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
8149: examining the DOM tree as it stands just after the
8150: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</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="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 8153: tag has been seen:</p>
8154:
1.159 mike 8155: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></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
8156: 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 8157: <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
8158: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8159: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8160: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8161: table">in table</a>".</p>
8162:
8163: <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
8164: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8165: 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
8166: then handled in a rather straight-forward manner, taking the parser
8167: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8168: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8169: row</a>" insertion modes, after which the DOM looks as
8170: follows:</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="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
8173: 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 8174: <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
8175: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8176: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8177: mode: in row">in row</a>".</p>
8178:
8179: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8180: <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
8181: 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
8182: mode</a>).</p>
8183:
1.159 mike 8184: <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 8185: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8186: node:</p>
8187:
1.159 mike 8188: <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 8189: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8190: 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 8191: 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
8192: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8193: marker having been removed by the "td" end tag token); and the
8194: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8195: table body">in table body</a>".</p>
8196:
8197: <p>Thus it is that the "bbb" character tokens are found. These
8198: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8199: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8200: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8201: body">in table body</a>"). The character tokens are collected,
8202: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8203: seen, they are processed as a group. Since they are not all spaces,
8204: 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,
8205: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8206: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8207: parent">foster parenting</a>.</p>
8208:
8209: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8210: active formatting elements are reconstructed</a>, a
8211: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8212: parent">foster parented</a>, and then the "bbb" text node is
8213: appended to it:</p>
8214:
1.159 mike 8215: <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
8216: <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 8217: <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
8218: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8219: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8220: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8221: mode: in table body">in table body</a>".</p>
8222:
8223: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8224: character">space characters</a> instead of "bbb", then those
8225: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8226: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8227:
8228: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8229: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8230: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8231: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8232: elements</a>, so the "ccc" character tokens after the table
8233: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8234: time after the table:</p>
8235:
1.724 mike 8236: <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 8237:
8238: <p><i>This section is non-normative.</i></p>
8239:
8240: <p>Consider the following markup, which for this example we will
8241: 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 8242: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8243: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8244:
8245: <pre><div id=a>
8246: <script>
8247: var div = document.getElementById('a');
8248: parent.document.body.appendChild(div);
8249: </script>
8250: <script>
8251: alert(document.URL);
8252: </script>
8253: </div>
8254: <script>
8255: alert(document.URL);
8256: </script></pre>
8257:
8258: <p>Up to the first "script" end tag, before the script is parsed,
8259: the result is relatively straightforward:</p>
8260:
1.306 mike 8261: <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="">
8262: </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 8263: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8264:
1.159 mike 8265: <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 8266: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8267: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8268: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8269:
8270: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8271: is inserted <em>into the outer <code>Document</code>
8272: object</em>.</p>
8273:
8274: <p>This also means that the <a href="browsers.html#script-s-global-object">script's global object</a> is
8275: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8276: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8277: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8278:
8279: <p class="note">This isn't a security problem since the script that
1.306 mike 8280: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.714 mike 8281: only do so because the two <code>Document</code> object have the
8282: same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8283:
8284: <p>Thus, the first alert says "http://example.com/outer".</p>
8285:
1.306 mike 8286: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8287: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8288: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8289:
1.159 mike 8290: <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 8291:
8292:
8293:
8294:
1.724 mike 8295: <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 8296:
8297: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8298: algorithm</dfn>. The algorithm takes as input a DOM
8299: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8300: exception.</p>
8301:
8302: <p class="note">This algorithm serializes the <em>children</em> of
8303: the node being serialized, not the node itself.</p>
8304:
8305: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8306: the empty string.</p></li>
8307:
8308: <li>
8309:
8310: <p>For each child node of <var title="">the node</var>, in
8311: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8312:
8313: </p><ol><li><p>Let <var title="">current node</var> be the child node
8314: being processed.</p></li>
8315:
8316: <li>
8317:
8318: <p>Append the appropriate string from the following list to
8319: <var title="">s</var>:</p>
8320:
8321: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8322:
8323: <dd>
8324:
1.588 mike 8325: <p>Append a U+003C LESS-THAN SIGN character character (<),
8326: followed by the element's tag name. (For nodes created by the
8327: <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
1.1 mike 8328: lowercase.)</p>
8329:
8330: <p>For each attribute that the element has, append a U+0020
8331: SPACE character, the attribute's name (which, for attributes
8332: 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 8333: U+003D EQUALS SIGN character (=), a U+0022 QUOTATION MARK
8334: character ("), the attribute's value, <a href="#escapingString" title="escaping a string">escaped as described below</a> in
8335: <i>attribute mode</i>, and a second U+0022 QUOTATION MARK
8336: character (").</p>
1.1 mike 8337:
8338: <p>While the exact order of attributes is UA-defined, and may
8339: depend on factors such as the order that the attributes were
8340: given in the original markup, the sort order must be stable,
8341: such that consecutive invocations of this algorithm serialize an
8342: element's attributes in the same order.</p>
8343:
1.588 mike 8344: <p>Append a U+003E GREATER-THAN SIGN character (>).</p>
1.1 mike 8345:
8346: <p>If <var title="">current node</var> is an
1.5 mike 8347: <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 8348: <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 8349: <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>,
8350: <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 8351: <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 8352: <code><a href="obsolete.html#wbr">wbr</a></code> element, then continue on to the next child
1.589 mike 8353: node at this point.</p> <!-- also, i guess: image and isindex,
8354: but we don't list those because we don't consider those
8355: "elements", more "macros", and thus we should never serialize
8356: them -->
1.1 mike 8357:
8358: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8359: <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 8360: a U+000A LINE FEED (LF) character.</p>
8361:
8362: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8363: serialization algorithm</a> on the <var title="">current
8364: node</var> element (thus recursing into this algorithm for
1.588 mike 8365: that element), followed by a U+003C LESS-THAN SIGN character
8366: (<), a U+002F SOLIDUS character (/), the element's tag name
8367: again, and finally a U+003E GREATER-THAN SIGN character
8368: (>).</p>
1.1 mike 8369:
8370: </dd>
8371:
8372:
8373: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8374: node</dt>
8375:
8376: <dd>
8377:
1.19 mike 8378: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8379: <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 8380: <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 8381: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8382: if the parent of <var title="">current node</var> is
8383: <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
8384: node, then append the value of <var title="">current
8385: node</var>'s <code title="">data</code> IDL attribute
8386: literally.</p>
1.1 mike 8387:
8388: <p>Otherwise, append the value of <var title="">current
1.192 mike 8389: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8390: below</a>.</p>
8391:
8392: </dd>
8393:
8394:
8395: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8396:
8397: <dd>
8398:
8399: <p>Append the literal string <code><!--</code> (U+003C
8400: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8401: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8402: attribute, followed by the literal string <code>--></code>
8403: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8404: SIGN).</p>
8405:
8406: </dd>
8407:
8408:
8409: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8410:
8411: <dd>
8412:
8413: <p>Append the literal string <code><?</code> (U+003C
8414: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8415: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8416: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8417: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8418: character (>).</p>
1.1 mike 8419:
8420: </dd>
8421:
8422:
8423: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8424:
8425: <dd>
8426:
8427: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8428: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8429: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8430: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8431: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8432: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8433: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8434: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8435:
8436: </dd>
8437:
8438:
8439: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8440: occur as children of elements. If, despite this, they somehow do
8441: occur, this algorithm must raise an
8442: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8443:
8444: </li>
8445:
8446: </ol></li>
8447:
8448: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8449:
8450: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8451: purposes of the algorithm above) consists of replacing any
8452: occurrences of the "<code title="">&</code>" character by the
8453: string "<code title="">&amp;</code>", any occurrences of the
8454: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8455: 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
8456: 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>
8457:
8458: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8459: agent, and are therefore not covered in the algorithm above.</p>
8460:
8461: <p class="note">It is possible that the output of this algorithm, if
8462: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8463: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8464: element to which a <code title="">Comment</code> node has been
8465: appended is serialized and the output is then reparsed, the comment
8466: will end up being displayed in the text field. Similarly, if, as a
8467: result of DOM manipulation, an element contains a comment that
8468: contains the literal string "<code title="">--></code>", then
8469: when the result of serializing the element is parsed, the comment
8470: will be truncated at that point and the rest of the comment will be
8471: interpreted as markup. More examples would be making a
8472: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8473: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8474: 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
8475: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8476: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8477:
8478:
1.724 mike 8479: <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 8480:
8481: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8482: algorithm</dfn>. The algorithm optionally takes as input an
8483: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8484: parser, as well as <var title="">input</var>, a string to parse, and
8485: returns a list of zero or more nodes.</p>
8486:
8487: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8488: in the parser section are parts that only occur if the parser was
8489: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8490: with such markings for informational purposes only; such markings
8491: have no normative weight. If it is possible for a condition
8492: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8493: parser wasn't created for the purposes of handling this algorithm,
8494: then that is an error in the specification.</p>
8495:
8496: <ol><li>
8497:
8498: <p>Create a new <code>Document</code> node, and mark it as being
8499: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8500:
8501: </li>
8502:
8503: <li>
8504:
8505: <p>If there is a <var title="">context</var> element, and the
8506: <code>Document</code> of the <var title="">context</var> element
8507: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8508: 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
8509: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8510: mode</a>, then let the <code>Document</code> be in
8511: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8512: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8513:
8514: </li>
8515:
8516: <li>
8517:
8518: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8519: the just created <code>Document</code> node.</p>
8520:
8521: </li>
8522:
8523: <li>
8524:
8525: <p>If there is a <var title="">context</var> element, run these
8526: substeps:</p>
8527:
8528: <ol><li>
8529:
1.541 mike 8530: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8531: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8532:
1.159 mike 8533: <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 8534: element</dt>
8535:
1.541 mike 8536: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8537:
8538:
1.672 mike 8539: <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>,
8540: <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 8541: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8542:
1.541 mike 8543: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8544:
8545:
1.672 mike 8546: <dt>If it is a <code><a href="semantics.html#script">script</a></code> element</dt>
8547:
8548: <dd>Switch the tokenizer to the <a href="#script-data-state">script data state</a>.</dd>
8549:
8550:
1.1 mike 8551: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8552:
1.541 mike 8553: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8554: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8555: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8556:
8557:
1.42 mike 8558: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8559:
1.541 mike 8560: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8561: state</a>.</dd>
1.1 mike 8562:
8563:
8564: <dt>Otherwise</dt>
8565:
1.541 mike 8566: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8567:
1.672 mike 8568: </dl><p class="note">For performance reasons, an implementation that
8569: uses the actual state machine described in this specification
8570: directly could use the PLAINTEXT state instead of the RAWTEXT
8571: and script data states where those are mentioned in the list
8572: above. They are equivalent, since there is no <a href="#appropriate-end-tag-token">appropriate
8573: end tag token</a> in the fragment case, but involve far fewer
8574: state transitions.</p>
8575:
8576: </li>
1.1 mike 8577:
8578: <li>
8579:
1.159 mike 8580: <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 8581: with no attributes.</p>
8582:
8583: </li>
8584:
8585: <li>
8586:
8587: <p>Append the element <var title="">root</var> to the
8588: <code>Document</code> node created above.</p>
8589:
8590: </li>
8591:
8592: <li>
8593:
8594: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8595: it contains just the single element <var title="">root</var>.</p>
8596:
8597: </li>
8598:
8599: <li>
8600:
8601: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8602: parser's insertion mode appropriately</a>.</p>
8603:
8604: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8605:
8606: </li>
8607:
8608: <li>
8609:
8610: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8611: to the nearest node to the <var title="">context</var> element
8612: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8613: ancestor chain, and including the element itself, if it is a
8614: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8615: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8616:
8617: </li>
8618:
8619: </ol></li>
8620:
8621: <li>
8622:
8623: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8624: parser</a> just created the <var title="">input</var>. The
8625: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8626: <i>irrelevant</i>.</p>
8627:
8628: </li>
8629:
8630: <li>
8631:
8632: <p>Start the parser and let it run until it has consumed all the
8633: characters just inserted into the input stream.</p>
8634:
8635: </li>
8636:
8637: <li>
8638:
8639: <p>If there is a <var title="">context</var> element, return the
8640: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8641: order</a>.</p>
8642:
8643: <p>Otherwise, return the children of the <code>Document</code>
8644: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8645:
8646: </li>
8647:
1.123 mike 8648: </ol></div></body></html>
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