Annotation of html5/spec/syntax.html, revision 1.587
1.2 mike 1: <!DOCTYPE HTML>
1.258 mike 2: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie"><head><title>9 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; }
7: h5, h6 { margin: 2.5em 0 1em; }
8: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
9: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
10: p { margin: 1em 0; }
11: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
12: dl, dd { margin-top: 0; margin-bottom: 0; }
13: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
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; }
20: dt, dfn { font-weight: bold; font-style: normal; }
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; }
75: p.copyright { font-size: x-small; font-style: oblique; margin: 0; }
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; }
118: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
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: }
128: .element:before {
129: position: absolute;
130: z-index: 2;
131: top: 0;
132: left: -1.15em;
133: height: 2em;
134: width: 0.9em;
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:
1.267 mike 169: </style><style type="text/css">
170:
1.292 mike 171: .applies thead th > * { display: block; }
172: .applies thead code { display: block; }
173: .applies tbody th { whitespace: nowrap; }
174: .applies td { text-align: center; }
175: .applies .yes { background: yellow; }
176:
1.267 mike 177: .matrix, .matrix td { border: none; text-align: right; }
178: .matrix { margin-left: 2em; }
179:
180: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
181: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
182: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
183:
184: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
185: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
186: #table-example-1 caption { padding-bottom: 0.5em; }
187: #table-example-1 thead, #table-example-1 tbody { border: none; }
188: #table-example-1 th, #table-example-1 td { border: solid thin; }
189: #table-example-1 th { font-weight: normal; }
190: #table-example-1 td { border-style: none solid; vertical-align: top; }
191: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
192: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
193: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
194: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
195: #table-example-1 tbody td:first-child::after { content: leader(". "); }
196: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
197: #table-example-1 tbody td:first-child + td { width: 10em; }
198: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
199: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
200:
201: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
202: .apple-table-examples * { font-family: "Times", serif; }
203: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
204: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
205: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
206: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
207: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
208: .apple-table-examples td { text-align: right; vertical-align: top; }
209: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
210: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
211: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
212: .apple-table-examples sup { line-height: 0; }
213:
1.235 mike 214: </style><link href="data:text/css," rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D" rel="alternate stylesheet" title="Highlight implementation requirements"><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><!-- ZZZ ED vs WD -->
1.2 mike 215: <script src="link-fixup.js"></script>
216: <link href="comms.html" title="8 Communication" rel="prev">
217: <link href="spec.html#contents" title="Table of contents" rel="index">
1.1 mike 218: <link href="named-character-references.html" title="9.6 Named character references" rel="next">
1.16 mike 219: </head><body onload="fixBrokenLink(); fixBrokenLink()"><div class="head">
1.1 mike 220: <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 221: <h1>HTML5</h1>
1.1 mike 222: <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>
1.123 mike 223: </div><nav>
1.1 mike 224: <a href="comms.html">← 8 Communication</a> –
1.2 mike 225: <a href="spec.html#contents">Table of contents</a> –
1.1 mike 226: <a href="named-character-references.html">9.6 Named character references →</a>
1.587 ! mike 227: </nav><p>This is revision 1.3403.</p>
1.11 mike 228:
1.1 mike 229:
1.123 mike 230: <h2 id="syntax"><span class="secno">9 </span><dfn>The HTML syntax</dfn></h2><p class="note">This section only describes the rules for
1.83 mike 231: <code><a href="iana-considerations.html#text-html">text/html</a></code> resources. Rules for XML resources are
1.1 mike 232: discussed in the section below entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
1.159 mike 233: syntax</a>".</p><h3 id="writing"><span class="secno">9.1 </span>Writing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p><div class="impl">
1.1 mike 234:
235: <p><i>This section only applies to documents, authoring tools, and
236: markup generators. In particular, it does not apply to conformance
237: checkers; conformance checkers must use the requirements given in
238: the next section ("parsing HTML documents").</i></p>
239:
1.123 mike 240: </div><p>Documents must consist of the following parts, in the given
241: order:</p><ol><li>Optionally, a single U+FEFF BYTE ORDER MARK (BOM) character.</li>
1.1 mike 242:
243: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
244: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
245:
246: <li>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a>.
247:
248: </li><li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
249: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
250:
1.159 mike 251: <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 252:
253: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
254: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
255:
256: </ol><p>The various types of content mentioned above are described in the
1.123 mike 257: 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 258: declarations</a> are to be serialized, as discussed in the
1.123 mike 259: section on that topic.</p><div class="note">
1.1 mike 260:
1.159 mike 261: <p>Space characters before the root <code><a href="semantics.html#the-html-element-0">html</a></code> element, and
262: space characters at the start of the <code><a href="semantics.html#the-html-element-0">html</a></code> element and
263: before the <code><a href="semantics.html#the-head-element-0">head</a></code> element, will be dropped when the
1.1 mike 264: document is parsed; space characters <em>after</em> the root
1.159 mike 265: <code><a href="semantics.html#the-html-element-0">html</a></code> element will be parsed as if they were at the end
266: of the <code><a href="semantics.html#the-body-element-0">body</a></code> element. Thus, space characters around the
1.1 mike 267: root element do not round-trip.</p>
268:
269: <p>It is suggested that newlines be inserted after the DOCTYPE,
270: after any comments that are before the root element, after the
1.159 mike 271: <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
272: that are inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element but before the
273: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 274:
1.123 mike 275: </div><p>Many strings in the HTML syntax (e.g. the names of elements and
1.1 mike 276: their attributes) are case-insensitive, but only for characters in
1.547 mike 277: the ranges U+0041 to U+005A (LATIN CAPITAL LETTER A to LATIN CAPITAL
278: LETTER Z) and U+0061 to U+007A (LATIN SMALL LETTER A to LATIN SMALL
1.1 mike 279: LETTER Z). For convenience, in this section this is just referred to
1.168 mike 280: as "case-insensitive".</p><h4 id="the-doctype"><span class="secno">9.1.1 </span>The DOCTYPE</h4><p class="XXX annotation"><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 281: but required, header.</p><p class="note">DOCTYPEs are required for legacy reasons. When
1.1 mike 282: omitted, browsers tend to use a different rendering mode that is
283: incompatible with some specifications. Including the DOCTYPE in a
284: document ensures that the browser makes a best-effort attempt at
1.123 mike 285: following the relevant specifications.</p><p>A DOCTYPE must consist of the following characters, in this
286: order:</p><ol class="brief"><li>A U+003C LESS-THAN SIGN (<code><</code>) character.</li>
1.1 mike 287: <li>A U+0021 EXCLAMATION MARK (<code>!</code>) character.</li>
288: <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>
289: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
290: <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>
291: <li>Optionally, a <a href="#doctype-legacy-string">DOCTYPE legacy string</a> (defined below).</li>
292: <li>Zero or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
293: <li>A U+003E GREATER-THAN SIGN (<code>></code>) character.</li>
294: </ol><p class="note">In other words, <code><!DOCTYPE HTML></code>,
1.123 mike 295: case-insensitively.</p><p>For the purposes of HTML generators that cannot output HTML
1.1 mike 296: markup with the short DOCTYPE "<code title=""><!DOCTYPE
297: HTML></code>", a <dfn id="doctype-legacy-string">DOCTYPE legacy string</dfn> may be inserted
298: into the DOCTYPE (in the position defined above). This string must
1.123 mike 299: 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 300: <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 301: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 302: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>quote mark</i>).</li>
1.465 mike 303: <li>The literal string "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>".</li>
1.1 mike 304: <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>
305: </ol><p class="note">In other words, <code><!DOCTYPE HTML SYSTEM
306: "about:legacy-compat"></code> or <code><!DOCTYPE HTML SYSTEM
307: 'about:legacy-compat'></code>, case-insensitively except for the bit
1.123 mike 308: in quotes.</p><p>The <a href="#doctype-legacy-string">DOCTYPE legacy string</a> should not be used unless
1.1 mike 309: the document is generated from a system that cannot output the
1.373 mike 310: shorter string.</p><h4 id="elements-0"><span class="secno">9.1.2 </span>Elements</h4><p>There are five different kinds of <dfn id="syntax-elements" title="syntax-elements">elements</dfn>: <a href="#void-elements">void elements</a>,
311: <a href="#raw-text-elements">raw text elements</a>, <a href="#rcdata-elements">RCDATA elements</a>,
312: <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 313:
314: <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 315: <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>,
316: <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 317: <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 318: <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 319:
1.373 mike 320: <dt><dfn id="raw-text-elements">Raw text elements</dfn></dt>
1.1 mike 321:
322: <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 323: noscript don't count as raw text for syntax purposes -->
1.1 mike 324:
1.373 mike 325: <dt><dfn id="rcdata-elements">RCDATA elements</dfn></dt>
1.1 mike 326:
1.159 mike 327: <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 328:
1.373 mike 329: <dt><dfn id="foreign-elements">Foreign elements</dfn></dt>
1.1 mike 330:
331: <dd>Elements from the <a href="#mathml-namespace">MathML namespace</a>
332: and the <a href="#svg-namespace">SVG namespace</a>.</dd>
333:
1.373 mike 334: <dt><dfn id="normal-elements">Normal elements</dfn></dt>
1.1 mike 335:
336: <dd>All other allowed <a href="infrastructure.html#html-elements">HTML elements</a> are normal
337: elements.</dd>
338:
339: </dl><p><dfn id="syntax-tags" title="syntax-tags">Tags</dfn> are used to delimit the start
1.373 mike 340: and end of elements in the markup. <a href="#raw-text-elements" title="raw text
341: elements">Raw text</a>, <a href="#rcdata-elements" title="RCDATA
342: elements">RCDATA</a>, and <a href="#normal-elements" title="normal
343: elements">normal</a> elements have a <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> to indicate where they
344: begin, and an <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> to
345: indicate where they end. The start and end tags of certain
346: <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 347: later. Those that cannot be omitted must not be omitted. <a href="#void-elements">Void
348: elements</a> only have a start tag; end tags must not be
1.373 mike 349: specified for <a href="#void-elements">void elements</a>. <a href="#foreign-elements">Foreign
350: elements</a> must either have a start tag and an end tag, or a
351: start tag that is marked as self-closing, in which case they must
352: not have an end tag.</p><p>The contents of the element must be placed between just after the
1.1 mike 353: start tag (which <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied,
354: in certain cases</a>) and just before the end tag (which again,
355: <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied in certain
356: cases</a>). The exact allowed contents of each individual element
357: depends on the content model of that element, as described earlier
358: in this specification. Elements must not contain content that their
359: content model disallows. In addition to the restrictions placed on
360: the contents by those content models, however, the five types of
1.123 mike 361: 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 362: no end tag, no content can be put between the start tag and the end
1.373 mike 363: 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
364: 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
365: must not contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.
1.1 mike 366: There are also <a href="#cdata-rcdata-restrictions">further
1.373 mike 367: restrictions</a> described below.</p><p><a href="#foreign-elements">Foreign elements</a> whose start tag is marked as
368: self-closing can't have any contents (since, again, as there's no
369: end tag, no content can be put between the start tag and the end
370: tag). <a href="#foreign-elements">Foreign elements</a> whose start tag is <em>not</em>
371: 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
1.1 mike 372: contain the character U+003C LESS-THAN SIGN (<code><</code>) or
373: an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.374 mike 374: ampersand</a>.</p><div class="note">
375:
376: <p>The HTML syntax does not support namespace
377: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
378:
379: <p>For instance, consider the following HTML fragment:</p>
380:
381: <pre><p>
382: <svg>
383: <metadata>
384: <!-- this is invalid -->
385: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
386: </metadata>
387: </svg>
388: </p></pre>
389:
390: <p>The innermost element, <code title="">cdr:license</code>, is
391: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
392: XML). In fact, as the comment in the fragment above says, the
393: fragment is actually non-conforming. This is because the SVG
394: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
395:
396: </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
1.1 mike 397: contain the character U+003C LESS-THAN SIGN (<code><</code>) or
398: an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.373 mike 399: ampersand</a>. Some <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 400: content they are allowed to hold, beyond the restrictions imposed by
401: the content model and those described in this paragraph. Those
1.123 mike 402: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 403: giving the element's name. HTML elements all have names that only
1.464 mike 404: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
405: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
406: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
407: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 408: elements</a>, may be written with any mix of lower- and uppercase
409: letters that, when converted to all-lowercase, matches the element's
410: tag name; tag names are case-insensitive.</p><h5 id="start-tags"><span class="secno">9.1.2.1 </span>Start tags</h5><p><dfn id="syntax-start-tag" title="syntax-start-tag">Start tags</dfn> must have the
1.123 mike 411: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.1 mike 412: SIGN (<code><</code>).</li>
413:
414: <li>The next few characters of a start tag must be the element's
415: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
416:
417: <li>If there are to be any attributes in the next step, there must
418: first be one or more <a href="infrastructure.html#space-character" title="space character">space
419: characters</a>.</li>
420:
421: <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
422: below. Attributes may be separated from each other by one or more
423: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
424:
425: <li>After the attributes, there may be one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>. (Some attributes
426: are required to be followed by a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes section</a> below.)</li>
427:
428: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 429: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
430: element</a>, then there may be a single U+002F SOLIDUS
431: (<code>/</code>) character. This character has no effect on
432: <a href="#void-elements">void elements</a>, but on <a href="#foreign-elements">foreign elements</a> it
433: marks the start tag as self-closing.</li>
1.1 mike 434:
435: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
436: SIGN (<code>></code>) character.</li>
437:
1.123 mike 438: </ol><h5 id="end-tags"><span class="secno">9.1.2.2 </span>End tags</h5><p><dfn id="syntax-end-tag" title="syntax-end-tag">End tags</dfn> must have the
439: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.1 mike 440: SIGN (<code><</code>).</li>
441:
442: <li>The second character of an end tag must be a U+002F SOLIDUS
443: (<code>/</code>).</li>
444:
445: <li>The next few characters of an end tag must be the element's
446: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
447:
448: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
449: character">space characters</a>.</li>
450:
451: <li>Finally, end tags must be closed by a U+003E GREATER-THAN
452: SIGN (<code>></code>) character.</li>
453:
1.123 mike 454: </ol><h5 id="attributes"><span class="secno">9.1.2.3 </span>Attributes</h5><p><dfn id="syntax-attributes" title="syntax-attributes">Attributes</dfn> for an element
455: 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 456: one or more characters other than the <a href="infrastructure.html#space-character" title="space
457: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
458: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
459: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
460: the control characters, and any characters that are not defined by
1.462 mike 461: Unicode. In the HTML syntax, attribute names, even those for
462: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
463: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 464: 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 465: 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 466: 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 467:
468: <dd>
469:
470: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
471: name</a>.</p>
472:
473: <div class="example">
474:
475: <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
476: the empty attribute syntax:</p>
477:
478: <pre><input <em>disabled</em>></pre>
479:
480: </div>
481:
482: <p>If an attribute using the empty attribute syntax is to be
483: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
484: character</a> separating the two.</p>
485:
486: </dd>
487:
1.2 mike 488: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 489:
490: <dd>
491:
492: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
493: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
494: characters</a>, followed by a single U+003D EQUALS SIGN
495: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
496: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
497: addition to the requirements given above for attribute values,
498: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
499: characters</a>, any U+0022 QUOTATION MARK (<code>"</code>)
500: characters, U+0027 APOSTROPHE (<code>'</code>) characters,
501: U+003D EQUALS SIGN (<code>=</code>) characters, U+003C LESS-THAN
1.463 mike 502: SIGN (<code><</code>) characters, U+003E GREATER-THAN SIGN
503: (<code>></code>) characters, or U+0060 GRAVE ACCENT (`)
504: characters, and must not be the empty string.</p>
505:
506: <!-- The ` character is in this list on a temporary basis, waiting
507: for IE to fix it's parsing bug whereby it treats ` as an
508: attribute value delimiter. Otherwise, escaping software that
509: tries to be clever and not use quotes when it doesn't need to
510: could be tricked by an attacker.
511:
512: Posit a site that allows the user to input text that is used
513: verbatim in two attributes, such that the user can set the
514: first attribute's value to:
515:
516: `
517:
518: ...and the second to:
519:
520: ` onload='...payload...' end=x
521:
522: ...with the assumption that the site is going to not quote
523: the first one, and quote the second one with double quotes:
524:
525: <body title=` class="` onload='...payload...' end=x">
526:
527: In IE, this is treated as:
528:
529: <body title=' class="'
530: onload='...payload...'
531: end='x"'>
532:
533: -->
534:
1.1 mike 535:
536: <div class="example">
537:
538: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
539: with the unquoted attribute value syntax:</p>
540:
541: <pre><input <em>value=yes</em>></pre>
542:
543: </div>
544:
545: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 546: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 547: 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 548: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
549:
550: </dd>
551:
552: <dt>Single-quoted attribute value syntax</dt>
553:
554: <dd>
555:
556: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
557: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
558: characters</a>, followed by a single U+003D EQUALS SIGN
559: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
560: character">space characters</a>, followed by a single U+0027
561: APOSTROPHE (<code>'</code>) character, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
562: addition to the requirements given above for attribute values,
563: must not contain any literal U+0027 APOSTROPHE (<code>'</code>)
564: characters, and finally followed by a second single U+0027
565: APOSTROPHE (<code>'</code>) character.</p>
566:
567: <div class="example">
568:
569: <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
570: single-quoted attribute value syntax:</p>
571:
572: <pre><input <em>type='checkbox'</em>></pre>
573:
574: </div>
575:
576: <p>If an attribute using the single-quoted attribute syntax is to
577: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
578: character</a> separating the two.</p>
579:
580: </dd>
581:
582: <dt>Double-quoted attribute value syntax</dt>
583:
584: <dd>
585:
586: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
587: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
588: characters</a>, followed by a single U+003D EQUALS SIGN
589: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
590: character">space characters</a>, followed by a single U+0022
591: QUOTATION MARK (<code>"</code>) character, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
592: addition to the requirements given above for attribute values,
593: must not contain any literal U+0022 QUOTATION MARK
594: (<code>"</code>) characters, and finally followed by a second
595: single U+0022 QUOTATION MARK (<code>"</code>) character.</p>
596:
597: <div class="example">
598:
599: <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
600: double-quoted attribute value syntax:</p>
601:
602: <pre><input <em>name="be evil"</em>></pre>
603:
604: </div>
605:
606: <p>If an attribute using the double-quoted attribute syntax is to
607: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
608: character</a> separating the two.</p>
609:
610: </dd>
611:
612: </dl><p>There must never be two or more attributes on the same start tag
613: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 614: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
615: one of the namespaced attributes given by the local name and
616: namespace of the first and second cells of a row from the following
617: table, it must be written using the name given by the third cell
618: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
619: </th></tr></thead><tbody><tr><td> <code title="">actuate</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:actuate</code>
620: </td></tr><tr><td> <code title="">arcrole</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:arcrole</code>
621: </td></tr><tr><td> <code title="">href</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:href</code>
622: </td></tr><tr><td> <code title="">role</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:role</code>
623: </td></tr><tr><td> <code title="">show</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:show</code>
624: </td></tr><tr><td> <code title="">title</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:title</code>
625: </td></tr><tr><td> <code title="">type</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:type</code>
626: </td></tr><tr><td> <code title="">base</code> </td><td> <a href="#xml-namespace">XML namespace</a> <!-- attr-xml-base --> </td><td> <code title="">xml:base</code>
627: </td></tr><tr><td> <code title="">lang</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:lang</code>
628: </td></tr><tr><td> <code title="">space</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:space</code>
629: </td></tr><tr><td> <code title="">xmlns</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns</code>
630: </td></tr><tr><td> <code title="">xlink</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns:xlink</code>
631: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in the <a href="#syntax">the
632: HTML syntax</a>.</p><h5 id="optional-tags"><span class="secno">9.1.2.4 </span>Optional tags</h5><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 633: is not present; it is implied, but it is still there. An HTML
1.159 mike 634: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 635: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 636: 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
637: 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
638: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
639: 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 640: element is empty, or--> if the first thing inside the
1.159 mike 641: <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
642: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
643: 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
644: 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 645: 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 646: 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 647: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
648: tag is present, the parser makes <style> and <script> elements
649: between </head> and <body> end up in the <head> instead of implying
1.159 mike 650: 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
651: 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 652: 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 653: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
654: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 655: 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 656: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
657: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 658: <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 659: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
660: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
661: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 662: 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 663: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
664: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
665: <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 666: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 667: <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 668: <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>,
669: <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>,
670: <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>,
671: <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>,
672: <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 673: <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>,
674: element, or if there is no more content in the parent element and
1.123 mike 675: 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 676: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
677: 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 678: 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 679: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
680: 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 681: 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 682: <select>; commented out text below can handle the non-<select> case
1.123 mike 683: 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 684: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
685: <code>select</code> element and--> is immediately followed by
686: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
687: that are ancestors of the <code>optgroup</code> element, up to and
688: including the first ancestor element that is not an
689: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 690: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 691: <select><optgroup></select>
692: <p id=x><optgroup></optgroup>x</p>
693: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
694: <p><optgroup id=x><optgroup></optgroup>x</p>
695: <p><optgroup><optgroup id=x>x</p>
1.123 mike 696: --><!-- </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 697: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
698: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
699: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 700: 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 701: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
702: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
703: 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 704: 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 705: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 706: <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 707: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
708: 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 709: 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 710: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
711: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
712: 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
713: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
714: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 715: 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 716: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
717: 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 718: 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 719: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
720: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 721: 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 722: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
723: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 724: 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 725: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
726: 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 727: 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 728: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
729: 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 730: 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
731: tag</a> must never be omitted if it has any attributes.</p><h5 id="element-restrictions"><span class="secno">9.1.2.5 </span>Restrictions on content models</h5><p>For historical reasons, certain elements have extra restrictions
732: 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 733: elements, even though these elements are technically allowed inside
734: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
735: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
736: 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 737: 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
738: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 739: 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>
740: elements. This does not affect the processing of the element. The
1.304 mike 741: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 742: <em>must</em> be included if the element's contents themselves start
743: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
744: otherwise the leading newline in the contents would be treated like
745: the optional newline, and ignored).</p><div class="example">
1.1 mike 746: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
747: <pre><pre>Hello</pre></pre>
748: <pre><pre><br>Hello</pre></pre>
1.373 mike 749: </div><h5 id="cdata-rcdata-restrictions"><span class="secno">9.1.2.6 </span>Restrictions on the contents of raw text and RCDATA elements</h5><p>The text in <a href="#raw-text-elements" title="raw text elements">raw text</a> and
750: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
751: contain any occurrences of the string "<code title=""></</code>"
752: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 753: case-insensitively match the tag name of the element followed by one
754: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 755: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.542 mike 756: GREATER-THAN SIGN (>), or U+002F SOLIDUS (/).</p><h4 id="text-0"><span class="secno">9.1.3 </span>Text</h4><p><dfn id="syntax-text" title="syntax-text">Text</dfn> is allowed inside elements,
1.1 mike 757: attributes, and comments. Text must consist of Unicode characters.
758: Text must not contain U+0000 characters. Text must not contain
1.316 mike 759: permanently undefined Unicode characters (noncharacters). Text must
760: not contain control characters other than <a href="infrastructure.html#space-character" title="space
761: character">space characters</a>. Extra constraints are placed on
762: what is and what is not allowed in text based on where the text is
763: to be put, as described in the other sections.</p><h5 id="newlines"><span class="secno">9.1.3.1 </span>Newlines</h5><p><dfn id="syntax-newlines" title="syntax-newlines">Newlines</dfn> in HTML may be
1.1 mike 764: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
765: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.123 mike 766: U+000A LINE FEED (LF) characters in that order.</p><h4 id="character-references"><span class="secno">9.1.4 </span>Character references</h4><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 767: to escape characters that couldn't otherwise legally be included in
1.123 mike 768: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND
1.1 mike 769: (<code>&</code>). Following this, there are three possible kinds
1.123 mike 770: of character references:</p><dl><dt>Named character references</dt>
1.1 mike 771:
772: <dd>The ampersand must be followed by one of the names given in the
773: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
774: case. The name must be one that is terminated by a U+003B SEMICOLON
1.464 mike 775: character (;).</dd>
1.1 mike 776:
777:
778: <dt>Decimal numeric character reference</dt>
779:
780: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
781: (<code>#</code>) character, followed by one or more digits in the
1.464 mike 782: range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing
783: a base-ten integer that corresponds to a Unicode code point that is
1.378 mike 784: allowed according to the definition below. The digits must then be
1.464 mike 785: followed by a U+003B SEMICOLON character (;).</dd>
1.1 mike 786:
787:
788: <dt>Hexadecimal numeric character reference</dt>
789:
790: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
791: (<code>#</code>) character, which must be followed by either a
1.464 mike 792: U+0078 LATIN SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL
793: LETTER X character (X), which must then be followed by one or more
794: digits in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9),
795: U+0061 LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and
796: U+0041 LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
797: representing a base-sixteen integer that corresponds to a Unicode
798: code point that is allowed according to the definition below. The
799: digits must then be followed by a U+003B SEMICOLON character
800: (;).</dd>
1.378 mike 801:
802: </dl><p>The numeric character reference forms described above are allowed
803: to reference any Unicode code point other than U+0000, permanently
804: undefined Unicode characters (noncharacters), and control characters
805: other than <a href="infrastructure.html#space-character" title="space character">space
806: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 807: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
808: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
809: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
810: (<), or another U+0026 AMPERSAND character
811: (<code>&</code>).</p><h4 id="cdata-sections"><span class="secno">9.1.5 </span>CDATA sections</h4><p><dfn id="syntax-cdata" title="syntax-cdata">CDATA sections</dfn> must start with
1.1 mike 812: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
813: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
814: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
815: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
816: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
817: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
818: that the text must not contain the three character sequence U+005D
819: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
820: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
821: section must be ended by the three character sequence U+005D RIGHT
822: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.159 mike 823: SIGN (<code title="">]]></code>).</p><h4 id="comments"><span class="secno">9.1.6 </span>Comments</h4><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p><p><dfn id="syntax-comments" title="syntax-comments">Comments</dfn> must start with the
1.1 mike 824: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
825: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
826: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
827: restriction that the text must not start with a single U+003E
1.464 mike 828: GREATER-THAN SIGN (>) character, nor start with a U+002D
829: HYPHEN-MINUS character (-) followed by a
830: U+003E GREATER-THAN SIGN (>) character, nor contain two
1.1 mike 831: consecutive U+002D HYPHEN-MINUS (<code title="">-</code>)
832: characters, nor end with a U+002D HYPHEN-MINUS (<code title="">-</code>) character. Finally, the comment must be ended by
833: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 834: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 835:
1.159 mike 836: <h3 id="parsing"><span class="secno">9.2 </span>Parsing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 837:
838: <p><i>This section only applies to user agents, data mining tools,
839: and conformance checkers.</i></p>
840:
841: <p class="note">The rules for parsing XML documents into DOM trees
842: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
843: syntax</a>".</p>
844:
845: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
846: rules described in this section to generate the DOM trees. Together,
847: these rules define what is referred to as the <dfn id="html-parser">HTML
848: parser</dfn>.</p>
849:
850: <div class="note">
851:
852: <p>While the HTML syntax described in this specification bears a
853: close resemblance to SGML and XML, it is a separate language with
854: its own parsing rules.</p>
855:
1.183 mike 856: <p>Some earlier versions of HTML (in particular from HTML2 to
857: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 858: (if any) web browsers ever implemented true SGML parsing for HTML
859: documents; the only user agents to strictly handle HTML as an SGML
860: application have historically been validators. The resulting
861: confusion — with validators claiming documents to have one
862: representation while widely deployed Web browsers interoperably
863: implemented a different representation — has wasted decades
864: of productivity. This version of HTML thus returns to a non-SGML
865: basis.</p>
866:
867: <p>Authors interested in using SGML tools in their authoring
868: pipeline are encouraged to use XML tools and the XML serialization
869: of HTML.</p>
870:
871: </div>
872:
873: <p>This specification defines the parsing rules for HTML documents,
874: whether they are syntactically correct or not. Certain points in the
875: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
876: errors</dfn>. The error handling for parse errors is well-defined:
877: user agents must either act as described below when encountering
878: such problems, or must abort processing at the first error that they
879: encounter for which they do not wish to apply the rules described
880: below.</p>
881:
882: <p>Conformance checkers must report at least one parse error
883: condition to the user if one or more parse error conditions exist in
884: the document and must not report parse error conditions if none
885: exist in the document. Conformance checkers may report more than one
1.174 mike 886: parse error condition if more than one parse error condition exists
1.1 mike 887: in the document. Conformance checkers are not required to recover
888: from parse errors.</p>
889:
890: <p class="note">Parse errors are only errors with the
891: <em>syntax</em> of HTML. In addition to checking for parse errors,
892: conformance checkers will also verify that the document obeys all
893: the other conformance requirements described in this
894: specification.</p>
895:
896: <p>For the purposes of conformance checkers, if a resource is
897: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
898: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
899:
1.266 mike 900: </div><div class="impl">
1.1 mike 901:
902: <h4 id="overview-of-the-parsing-model"><span class="secno">9.2.1 </span>Overview of the parsing model</h4>
903:
904: <p>The input to the HTML parsing process consists of a stream of
905: Unicode characters, which is passed through a
906: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
907: construction</a> stage. The output is a <code>Document</code>
908: object.</p>
909:
910: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
911: support scripting</a> do not have to actually create a DOM
912: <code>Document</code> object, but the DOM tree in such cases is
913: still used as the model for the rest of the specification.</p>
914:
915: <p>In the common case, the data handled by the tokenization stage
1.159 mike 916: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
917: 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 918:
919: <p><img alt="" src="images/parsing-model-overview.png"></p>
920:
921: <p id="nestedParsing">There is only one set of states for the
922: tokenizer stage and the tree construction stage, but the tree
923: construction stage is reentrant, meaning that while the tree
924: construction stage is handling one token, the tokenizer might be
925: resumed, causing further tokens to be emitted and processed before
926: the first token's processing is complete.</p>
927:
928: <div class="example">
929:
930: <p>In the following example, the tree construction stage will be
931: called upon to handle a "p" start tag token while handling the
932: "script" start tag token:</p>
933:
934: <pre>...
935: <script>
936: document.write('<p>');
937: </script>
938: ...</pre>
939:
940: </div>
941:
942: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
943: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
944: pause flag</dfn>, which must be initially set to false.</p>
945:
1.266 mike 946: </div><div class="impl">
1.1 mike 947:
948: <h4 id="the-input-stream"><span class="secno">9.2.2 </span>The <dfn>input stream</dfn></h4>
949:
950: <p>The stream of Unicode characters that comprises the input to the
951: tokenization stage will be initially seen by the user agent as a
952: stream of bytes (typically coming over the network or from the local
953: file system). The bytes encode the actual characters according to a
954: particular <em>character encoding</em>, which the user agent must
955: use to decode the bytes into characters.</p>
956:
957: <p class="note">For XML documents, the algorithm user agents must
958: use to determine the character encoding is given by the XML
1.104 mike 959: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 960:
961:
1.168 mike 962: <h5 id="determining-the-character-encoding"><span class="secno">9.2.2.1 </span>Determining the character encoding</h5><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p>
1.1 mike 963:
964: <p>In some cases, it might be impractical to unambiguously determine
965: the encoding before parsing the document. Because of this, this
966: specification provides for a two-pass mechanism with an optional
967: pre-scan. Implementations are allowed, as described below, to apply
968: a simplified parsing algorithm to whatever bytes they have available
969: before beginning to parse the document. Then, the real parser is
970: started, using a tentative encoding derived from this pre-parse and
971: other out-of-band metadata. If, while the document is being loaded,
972: the user agent discovers an encoding declaration that conflicts with
973: this information, then the parser can get reinvoked to perform a
974: parse of the document with the real encoding.</p>
975:
976: <p id="documentEncoding">User agents must use the following
977: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
978: the character encoding to use when decoding a document in the first
979: pass. This algorithm takes as input any out-of-band metadata
980: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
981: and all the bytes available so far, and returns an encoding and a
982: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
983: confidence is either <i>tentative</i>, <i>certain</i>, or
984: <i>irrelevant</i>. The encoding used, and whether the confidence in
985: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
986: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
987: encoding is necessary, e.g. because the parser is operating on a
988: stream of Unicode characters and doesn't have to use an encoding at
989: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
990: <i>irrelevant</i>.</p>
991:
992: <ol><li><p>If the transport layer specifies an encoding, and it is
993: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
994: <i>certain</i>, and abort these steps.</p></li>
995:
996: <li><p>The user agent may wait for more bytes of the resource to be
997: available, either in this step or at any later step in this
998: algorithm. For instance, a user agent might wait 500ms or 512
999: bytes, whichever came first. In general preparsing the source to
1000: find the encoding improves performance, as it reduces the need to
1001: throw away the data structures used when parsing upon finding the
1002: encoding information. However, if the user agent delays too long to
1003: obtain data to determine the encoding, then the cost of the delay
1004: could outweigh any performance improvements from the
1005: preparse.</p></li>
1006:
1007: <li><p>For each of the rows in the following table, starting with
1008: the first one and going down, if there are as many or more bytes
1009: available than the number of bytes in the first column, and the
1010: first bytes of the file match the bytes given in the first column,
1011: then return the encoding given in the cell in the second column of
1012: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1013: <i>certain</i>, and abort these steps:</p>
1014:
1015: <!-- this table is present in several forms in this file; keep them in sync -->
1016: <table><thead><tr><th>Bytes in Hexadecimal
1017: </th><th>Encoding
1018: </th></tr></thead><tbody><!-- nobody uses this
1019: <tr>
1020: <td>00 00 FE FF
1021: <td>UTF-32BE
1022: <tr>
1023: <td>FF FE 00 00
1024: <td>UTF-32LE
1025: --><tr><td>FE FF
1026: </td><td>UTF-16BE
1027: </td></tr><tr><td>FF FE
1028: </td><td>UTF-16LE
1029: </td></tr><tr><td>EF BB BF
1030: </td><td>UTF-8
1031: <!-- nobody uses this
1032: <tr>
1033: <td>DD 73 66 73
1034: <td>UTF-EBCDIC
1035: -->
1036: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1037: (BOMs).</p></li>
1038:
1039: <li><p>Otherwise, the user agent will have to search for explicit
1040: character encoding information in the file itself. This should
1041: proceed as follows:
1042:
1043: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1044: input stream, initially pointing at the first byte. If at any
1045: point during these substeps the user agent either runs out of
1046: bytes or decides that scanning further bytes would not be
1047: efficient, then skip to the next step of the overall character
1048: encoding detection algorithm. User agents may decide that scanning
1049: <em>any</em> bytes is not efficient, in which case these substeps
1050: are entirely skipped.</p>
1051:
1052: <p>Now, repeat the following "two" steps until the algorithm
1053: aborts (either because user agent aborts, as described above, or
1054: because a character encoding is found):</p>
1055:
1056: <ol><li><p>If <var title="">position</var> points to:</p>
1057:
1058: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1059: <dd>
1060:
1061: <p>Advance the <var title="">position</var> pointer so that it
1062: points at the first 0x3E byte which is preceded by two 0x2D
1063: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1064: after the 0x3C byte that was found. (The two 0x2D bytes can be
1065: the same as the those in the '<!--' sequence.)</p>
1066:
1067: </dd>
1068:
1069: <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>
1070: <dd>
1071:
1072: <ol><li><p>Advance the <var title="">position</var> pointer so
1073: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1074: 0x2F byte (the one in sequence of characters matched
1075: above).</p></li>
1076:
1077: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1078: an attribute</a> and its value. If no attribute was
1079: sniffed, then skip this inner set of steps, and jump to the
1080: second step in the overall "two step" algorithm.</p></li>
1081:
1082: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1083: then return to step 2 in these inner steps.</p></li>
1084:
1085: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1086: the attribute's value, interpreted as a character
1087: encoding.</p></li>
1088:
1089: <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
1090: extracting an encoding from a Content-Type</a>, giving the
1091: attribute's value as the string to parse. If an encoding is
1092: returned, let <var title="">charset</var> be that
1093: encoding. Otherwise, return to step 2 in these inner
1094: steps.</p></li>
1095:
1096: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1097: change the value of <var title="">charset</var> to
1098: UTF-8.</p></li>
1099:
1100: <li><p>If <var title="">charset</var> is a supported
1101: character encoding, then return the given encoding, with
1102: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1103: <i>tentative</i>, and abort all these steps.</p></li>
1104:
1105: <li><p>Otherwise, return to step 2 in these inner
1106: steps.</p></li>
1107:
1108: </ol></dd>
1109:
1.464 mike 1110: <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 1111: <dd>
1112:
1113: <ol><li><p>Advance the <var title="">position</var> pointer so
1114: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1115: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1116: (ASCII >) byte.</p></li>
1.1 mike 1117:
1118: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1119: attribute</a> until no further attributes can be found,
1120: then jump to the second step in the overall "two step"
1121: algorithm.</p></li>
1122:
1123: </ol></dd>
1124:
1125: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1126: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1127: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1128: <dd>
1129:
1130: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1131: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1132: 0x3C byte that was found.</p>
1133:
1134: </dd>
1135:
1136: <dt>Any other byte</dt>
1137: <dd>
1138:
1139: <p>Do nothing with that byte.</p>
1140:
1141: </dd>
1142:
1143: </dl></li>
1144:
1145: <li>Move <var title="">position</var> so it points at the next
1146: byte in the input stream, and return to the first step of this
1147: "two step" algorithm.</li>
1148:
1149: </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
1150: attribute</dfn>, it means doing this:</p>
1151:
1152: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1153: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1154: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1155: substep.</p></li>
1156:
1157: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1158: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1159: one.</p></li>
1160:
1161: <li><p>Otherwise, the byte at <var title="">position</var> is the
1162: start of the attribute name. Let <var title="">attribute
1163: name</var> and <var title="">attribute value</var> be the empty
1164: string.</p></li>
1165:
1166: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1167:
1.464 mike 1168: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1169: name</var> is longer than the empty string</dt>
1170:
1171: <dd>Advance <var title="">position</var> to the next byte and
1172: jump to the step below labeled <i>value</i>.</dd>
1173:
1174: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1175: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1176:
1177: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1178:
1.464 mike 1179: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1180:
1181: <dd>Abort the "get an attribute" algorithm. The attribute's
1182: name is the value of <var title="">attribute name</var>, its
1183: value is the empty string.</dd>
1184:
1.464 mike 1185: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1186: Z)</dt>
1.1 mike 1187:
1188: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1189: name</var> (where <var title="">b</var> is the value of the
1190: byte at <var title="">position</var>).</dd>
1191:
1192: <dt>Anything else</dt>
1193:
1194: <dd>Append the Unicode character with the same code point as the
1195: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1196: bytes outside the ASCII range are handled here, since only
1197: ASCII characters can contribute to the detection of a character
1198: encoding.)</dd>
1199:
1200: </dl></li>
1201:
1202: <li><p>Advance <var title="">position</var> to the next byte and
1203: return to the previous step.</p></li>
1204:
1205: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1206: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1207: advance <var title="">position</var> to the next byte, then,
1208: repeat this step.</p></li>
1209:
1210: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1211: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1212: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1213: string.</p></li>
1214:
1215: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1216: =) byte.</p></li>
1.1 mike 1217:
1218: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1219: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1220: advance <var title="">position</var> to the next byte, then,
1221: repeat this step.</p></li>
1222:
1223: <li><p>Process the byte at <var title="">position</var> as
1224: follows:</p>
1225:
1.464 mike 1226: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1227:
1228: <dd>
1229:
1230: <ol><li>Let <var title="">b</var> be the value of the byte at
1231: <var title="">position</var>.</li>
1232:
1233: <li>Advance <var title="">position</var> to the next
1234: byte.</li>
1235:
1236: <li>If the value of the byte at <var title="">position</var>
1237: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1238: an attribute" algorithm. The attribute's name is the value of
1239: <var title="">attribute name</var>, and its value is the
1240: value of <var title="">attribute value</var>.</li>
1241:
1.464 mike 1242: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1243: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1244: than the value of the byte at <var title="">position</var>.</li>
1245:
1246: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1247: the value of the byte at <var title="">position</var>.</li>
1248:
1249: <li>Return to the second step in these substeps.</li>
1250:
1251: </ol></dd>
1252:
1.464 mike 1253: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1254:
1255: <dd>Abort the "get an attribute" algorithm. The attribute's
1256: name is the value of <var title="">attribute name</var>, its
1257: value is the empty string.</dd>
1258:
1259:
1.464 mike 1260: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1261: Z)</dt>
1.1 mike 1262:
1263: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1264: value</var> (where <var title="">b</var> is the value of the
1265: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1266:
1267: <dt>Anything else</dt>
1268:
1269: <dd>Append the Unicode character with the same code point as the
1270: 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>
1271:
1272: </dl></li>
1273:
1274: <li><p>Process the byte at <var title="">position</var> as
1275: follows:</p>
1276:
1277: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1278: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1279: >)</dt>
1.1 mike 1280:
1281: <dd>Abort the "get an attribute" algorithm. The attribute's
1282: name is the value of <var title="">attribute name</var> and its
1283: value is the value of <var title="">attribute value</var>.</dd>
1284:
1.464 mike 1285: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1286: Z)</dt>
1.1 mike 1287:
1288: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1289: value</var> (where <var title="">b</var> is the value of the
1290: byte at <var title="">position</var>).</dd>
1291:
1292: <dt>Anything else</dt>
1293:
1294: <dd>Append the Unicode character with the same code point as the
1295: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1296:
1297: </dl></li>
1298:
1299: <li><p>Advance <var title="">position</var> to the next byte and
1300: return to the previous step.</p></li>
1301:
1302: </ol><p>For the sake of interoperability, user agents should not use a
1303: pre-scan algorithm that returns different results than the one
1304: described above. (But, if you do, please at least let us know, so
1305: that we can improve this algorithm and benefit everyone...)</p>
1306:
1307: </li>
1308:
1309: <li><p>If the user agent has information on the likely encoding for
1310: this page, e.g. based on the encoding of the page when it was last
1311: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1312: <i>tentative</i>, and abort these steps.</p></li>
1313:
1.322 mike 1314: <li>
1315:
1316: <p>The user agent may attempt to autodetect the character encoding
1317: from applying frequency analysis or other algorithms to the data
1.568 mike 1318: stream. Such algorithms may use information about the resource
1319: other than the resource's contents, including the address of the
1320: resource. If autodetection succeeds in determining a character
1.322 mike 1321: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1322: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1323:
1324: <p class="note">The UTF-8 encoding has a highly detectable bit
1325: pattern. Documents that contain bytes with values greater than
1326: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1327: while documents with byte sequences that do not match it are very
1328: likely not. User-agents are therefore encouraged to search for
1.485 mike 1329: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1330:
1331: </li>
1.1 mike 1332:
1.501 mike 1333: <li>
1334:
1335: <p>Otherwise, return an implementation-defined or user-specified
1336: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1337: <i>tentative</i>.</p>
1338:
1339: <p>In controlled environments or in environments where the
1340: encoding of documents can be prescribed (for example, for user
1341: agents intended for dedicated use in new networks), the
1342: comprehensive <code title="">UTF-8</code> encoding is
1343: suggested.</p>
1344:
1345: <p>In other environments, the default encoding is typically
1346: dependent on the user's locale (an approximation of the languages,
1347: and thus typically encodings, of the pages that the user is likely
1348: to frequent). The following table gives suggested defaults based
1.504 mike 1349: on the user's locale, for compatibility with legacy
1350: content. Locales are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1351:
1352: <!-- based on mozilla 1.9.1 localizations:
1353: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1354:
1.504 mike 1355: <table><thead><tr><th>Locale language
1.501 mike 1356: </th><th>Suggested default encoding
1357: </th></tr></thead><tbody><tr><td>ar
1358: </td><td>UTF-8
1359:
1360: </td></tr><tr><td>be
1361: </td><td>ISO-8859-5
1362:
1363: </td></tr><tr><td>bg
1364: </td><td>windows-1251
1365:
1366: </td></tr><tr><td>cs<!-- -CZ -->
1367: </td><td>ISO-8859-2
1368:
1369: </td></tr><tr><td>cy
1370: </td><td>UTF-8
1371:
1372: </td></tr><tr><td>fa<!-- -IR -->
1373: </td><td>UTF-8
1374:
1375: </td></tr><tr><td>he<!-- -IL -->
1376: </td><td>windows-1255
1377:
1378: </td></tr><tr><td>hr
1379: </td><td>UTF-8
1380:
1381: </td></tr><tr><td>hu<!-- -HU -->
1382: </td><td>ISO-8859-2
1383:
1384: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1385: </td><td>windows-31J <!-- Shift_JIS -->
1386:
1387: </td></tr><tr><td>kk
1388: </td><td>UTF-8
1389:
1390: </td></tr><tr><td>ko<!-- -KR -->
1391: </td><td>windows-949 <!-- EUC-KR -->
1392:
1393: </td></tr><tr><td>ku
1394: </td><td>windows-1254 <!-- ISO-8859-9 -->
1395:
1396: </td></tr><tr><td>lt
1397: </td><td>windows-1257
1398:
1399: </td></tr><tr><td>lv<!-- -LV -->
1400: </td><td>ISO-8859-13
1401:
1402: </td></tr><tr><td>mk<!-- -MK -->
1403: </td><td>UTF-8
1404:
1405: </td></tr><tr><td>or
1406: </td><td>UTF-8
1407:
1408: </td></tr><tr><td>pl<!-- -PL -->
1409: </td><td>ISO-8859-2
1410:
1411: </td></tr><tr><td>ro
1412: </td><td>UTF-8
1413:
1414: </td></tr><tr><td>ru
1415: </td><td>windows-1251
1416:
1417: </td></tr><tr><td>sk
1418: </td><td>windows-1250
1419:
1420: </td></tr><tr><td>sl
1421: </td><td>ISO-8859-2
1422:
1423: </td></tr><tr><td>sr
1424: </td><td>UTF-8
1425:
1426: </td></tr><tr><td>th
1427: </td><td>windows-874 <!-- TIS-620 -->
1428:
1429: </td></tr><tr><td>tr<!-- -TR -->
1430: </td><td>windows-1254 <!-- ISO-8859-9 -->
1431:
1.503 mike 1432: </td></tr><tr><td>uk
1.501 mike 1433: </td><td>windows-1251
1434:
1435: </td></tr><tr><td>vi
1436: </td><td>UTF-8
1437:
1438: </td></tr><tr><td>zh-CN
1439: </td><td>GB18030
1440:
1441: </td></tr><tr><td>zh-TW
1442: </td><td>Big5
1443:
1444: </td></tr><tr><td>All other locales
1445: </td><td>windows-1252
1446:
1447: </td></tr></tbody></table></li>
1.1 mike 1448:
1449: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1450: be set to the value returned from this algorithm, at the same time
1451: as the user agent uses the returned value to select the decoder to
1452: use for the input stream.</p>
1453:
1.582 mike 1454: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1455: of the HTTP specification, which requires that the encoding be
1456: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1457: encoding declaration</a> to the contrary, and of the RFC 2046,
1458: which requires that the encoding be assumed to be US-ASCII in the
1459: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1460: contrary. This specification's third approach is motivated by a
1461: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1462:
1.1 mike 1463:
1.237 mike 1464: <h5 id="character-encodings-0"><span class="secno">9.2.2.2 </span>Character encodings</h5><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p>
1.1 mike 1465:
1.237 mike 1466: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1467: encodings, but may support more.</p>
1468:
1469: <p class="note">It is not unusual for Web browsers to support dozens
1470: if not upwards of a hundred distinct character encodings.</p>
1471:
1.365 mike 1472: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1473: every character encoding they support, and should support all the
1474: IANA-registered names and aliases of every character encoding they
1475: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1476:
1477: <p>When comparing a string specifying a character encoding with the
1478: name or alias of a character encoding to determine if they are
1479: 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
1480: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1481: case-insensitive</a> manner.</p>
1482:
1.539 mike 1483: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1484: first column of the following table to either convert content to
1485: Unicode characters or convert Unicode characters to bytes, it must
1486: instead use the encoding given in the cell in the second column of
1487: the same row. When a byte or sequence of bytes is treated
1488: differently due to this encoding aliasing, it is said to have been
1489: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1490:
1491: <table><caption>Character encoding overrides</caption>
1492: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1493: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1494: <a href="references.html#refsEUCKR">[EUCKR]</a>
1495: <a href="references.html#refsWIN949">[WIN949]</a>
1496: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1497: <a href="references.html#refsRFC1345">[RFC1345]</a>
1498: <a href="references.html#refsGBK">[GBK]</a>
1499: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1500: <a href="references.html#refsRFC1345">[RFC1345]</a>
1501: <a href="references.html#refsGBK">[GBK]</a>
1502: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1503: <a href="references.html#refsRFC1345">[RFC1345]</a>
1504: <a href="references.html#refsWIN1252">[WIN1252]</a>
1505: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1506: <a href="references.html#refsRFC1345">[RFC1345]</a>
1507: <a href="references.html#refsWIN1254">[WIN1254]</a>
1508: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1509: <a href="references.html#refsISO885911">[ISO885911]</a>
1510: <a href="references.html#refsWIN874">[WIN874]</a>
1511: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1512: <a href="references.html#refsRFC1345">[RFC1345]</a>
1513: <a href="references.html#refsWIN949">[WIN949]</a>
1514: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1515: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1516: <a href="references.html#refsWIN31J">[WIN31J]</a>
1517: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1518: <a href="references.html#refsTIS620">[TIS620]</a>
1519: <a href="references.html#refsWIN874">[WIN874]</a>
1520: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1521: <a href="references.html#refsRFC1345">[RFC1345]</a>
1522: <a href="references.html#refsWIN1252">[WIN1252]</a>
1523: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1524: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1525: violation</a> of the W3C Character Model specification, motivated
1526: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1527:
1528: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1529: been found, user agents must default to UTF-16LE.</p>
1530:
1531: <p class="note">The requirement to default UTF-16 to LE rather than
1532: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1533: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1534:
1535: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1536: 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>
1537:
1538: <p>Support for encodings based on EBCDIC is not recommended. This
1539: encoding is rarely used for publicly-facing Web content.</p>
1540:
1541: <p>Support for UTF-32 is not recommended. This encoding is rarely
1542: used, and frequently implemented incorrectly.</p>
1543:
1544: <p class="note">This specification does not make any attempt to
1545: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1546: and use of these encodings can thus lead to unexpected behavior in
1547: implementations of this specification.</p>
1548:
1549:
1550:
1551: <h5 id="preprocessing-the-input-stream"><span class="secno">9.2.2.3 </span>Preprocessing the input stream</h5>
1.1 mike 1552:
1553: <p>Given an encoding, the bytes in the input stream must be
1554: converted to Unicode characters for the tokenizer, as described by
1555: the rules for that encoding, except that the leading U+FEFF BYTE
1556: ORDER MARK character, if any, must not be stripped by the encoding
1557: layer (it is stripped by the rule below).</p> <!-- this is to
1558: prevent two leading BOMs from being both stripped, once by the
1559: decoder, and once by the parser -->
1560:
1561: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1562: could not be converted to Unicode code points must be converted to
1563: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1564:
1565: <p class="note">Bytes or sequences of bytes in the original byte
1566: stream that did not conform to the encoding specification
1567: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1568: errors that conformance checkers are expected to report.</p>
1569:
1.438 mike 1570: <p>Any byte or sequence of bytes in the original byte stream that is
1571: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1572: error</a>.</p>
1573:
1574: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1575: any are present.</p>
1576:
1.300 mike 1577: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1578: character regardless of whether that character was used to determine
1579: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1580: motivated by a desire to increase the resilience of user agents in
1581: the face of naïve transcoders.</p>
1582:
1.316 mike 1583: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1584: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1585: them to suddenly turn into codepoints when they go through a UTF-16
1586: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1587: CHARACTERs. Any occurrences of such characters and code points are
1588: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1589:
1590: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1591: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1592: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1593: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1594: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1595: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1596: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1597: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1598: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1599: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1600: errors</a>. These are all control characters or permanently
1601: undefined Unicode characters (noncharacters).</p>
1.1 mike 1602:
1603: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1604: characters are treated specially. Any CR characters that are
1605: followed by LF characters must be removed, and any CR characters not
1606: followed by LF characters must be converted to LF characters. Thus,
1607: newlines in HTML DOMs are represented by LF characters, and there
1608: are never any CR characters in the input to the
1609: <a href="#tokenization">tokenization</a> stage.</p>
1610:
1611: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1612: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1613: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1614: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1615: to have been <i><a href="#consumed">consumed</a></i>.</p>
1616:
1617: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1618: character or just before the end of the input stream) where content
1.159 mike 1619: 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 1620: inserted. The insertion point is relative to the position of the
1621: character immediately after it, it is not an absolute offset into
1622: the input stream. Initially, the insertion point is
1.10 mike 1623: undefined.</p>
1.1 mike 1624:
1625: <p>The "EOF" character in the tables below is a conceptual character
1626: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1627: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1628: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1629: 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 1630: consumed. Otherwise, the "EOF" character is not a real character in
1631: the stream, but rather the lack of any further characters.</p>
1632:
1633:
1.237 mike 1634: <h5 id="changing-the-encoding-while-parsing"><span class="secno">9.2.2.4 </span>Changing the encoding while parsing</h5>
1.1 mike 1635:
1636: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1637: encoding</dfn>, it must run the following steps. This might happen
1638: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1639: failed to find an encoding, or if it found an encoding that was not
1640: the actual encoding of the file.</p>
1641:
1642: <ol><li>If the new encoding is identical or equivalent to the encoding
1643: that is already being used to interpret the input stream, then set
1644: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1645: <i>certain</i> and abort these steps. This happens when the
1646: encoding information found in the file matches what the
1647: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1648: encoding, and in the second pass through the parser if the first
1649: pass found that the encoding sniffing algorithm described in the
1650: earlier section failed to find the right encoding.</li>
1651:
1652: <li>If the encoding that is already being used to interpret the
1653: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1654: <i>certain</i> and abort these steps. The new encoding is ignored;
1655: if it was anything but the same encoding, then it would be clearly
1656: incorrect.</li>
1657:
1658: <li>If the new encoding is a UTF-16 encoding, change it to
1659: UTF-8.</li>
1660:
1661: <li>If all the bytes up to the last byte converted by the current
1662: decoder have the same Unicode interpretations in both the current
1663: encoding and the new encoding, and if the user agent supports
1664: changing the converter on the fly, then the user agent may change
1665: to the new converter for the encoding on the fly. Set the
1666: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1667: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1668: <i>certain</i>, and abort these steps.</li>
1669:
1670: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1671: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1672: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1673: sniffing algorithm</a> and instead just set the encoding to the
1674: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1675: <i>certain</i>. Whenever possible, this should be done without
1676: actually contacting the network layer (the bytes should be
1677: re-parsed from memory), even if, e.g., the document is marked as
1678: not being cacheable. If this is not possible and contacting the
1679: network layer would involve repeating a request that uses a method
1680: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1681: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1682: <i>certain</i> and ignore the new encoding. The resource will be
1683: misinterpreted. User agents may notify the user of the situation,
1684: to aid in application development.</li>
1685:
1.266 mike 1686: </ol></div><div class="impl">
1687:
1688: <h4 id="parse-state"><span class="secno">9.2.3 </span>Parse state</h4>
1.1 mike 1689:
1690: <h5 id="the-insertion-mode"><span class="secno">9.2.3.1 </span>The insertion mode</h5>
1691:
1692: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1693: the primary operation of the tree construction stage.</p>
1694:
1695: <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
1696: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1697: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1698: "<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 1699: "<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 1700: "<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>",
1701: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1702: "<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
1703: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1704: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1705: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1706: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1707: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1708: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1709: frameset</a>" during the course of the parsing, as described in
1710: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1711: how tokens are processed and whether CDATA sections are
1712: supported.</p>
1713:
1714: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1715: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1716: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1717: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1718: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1719: "<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
1720: that the other modes defer to them at various times. When the
1721: algorithm below says that the user agent is to do something
1722: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1723: mode", where <var title="">m</var> is one of these modes, the user
1724: agent must use the rules described under the <var title="">m</var>
1725: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1726: <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>
1727: to a new value.</p>
1728:
1729: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1730: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1731: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1732: is also set. This is the insertion mode to which the tree
1733: construction stage will return.</p>
1.1 mike 1734:
1735: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1736: mode: in foreign content">in foreign content</a>", the
1737: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1738: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1739: foreign content">in foreign content</a>" mode to handle HTML
1740: (i.e. not foreign) content.</p>
1741:
1742: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1743: mode appropriately</dfn>, it means the UA must follow these
1744: steps:</p>
1745:
1746: <ol><li>Let <var title="">last</var> be false.</li>
1747:
1748: <li>Let <var title="">node</var> be the last node in the
1749: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1750:
1751: <li>If <var title="">node</var> is the first node in the stack of
1752: open elements, then set <var title="">last</var> to true and set
1753: <var title="">node</var> to the <var title="">context</var>
1754: element. (<a href="#fragment-case">fragment case</a>)</li>
1755:
1756: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1757: 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 abort these
1758: steps. (<a href="#fragment-case">fragment case</a>)</li>
1759:
1760: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1761: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1762: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1763: mode: in cell">in cell</a>" and abort these steps.</li>
1764:
1765: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1766: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1767: mode: in row">in row</a>" and abort these steps.</li>
1768:
1769: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1770: <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
1771: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1772: table body">in table body</a>" and abort these steps.</li>
1773:
1774: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1775: 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 abort
1776: these steps.</li>
1777:
1778: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1779: 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
1780: abort these steps. (<a href="#fragment-case">fragment case</a>)</li>
1781:
1782: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1783: 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 abort these
1784: steps.</li>
1785:
1786: <li>If <var title="">node</var> is an element from the <a href="#mathml-namespace">MathML
1787: namespace</a> or the <a href="#svg-namespace">SVG namespace</a>, then switch the
1788: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1789: foreign content">in foreign content</a>", let the
1790: <a href="#secondary-insertion-mode">secondary insertion mode</a> be "<a href="#parsing-main-inbody" title="insertion
1791: mode: in body">in body</a>", and abort these steps.</li>
1792:
1.159 mike 1793: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.1 mike 1794: 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 abort
1795: these steps. (<a href="#fragment-case">fragment case</a>)</li> <!-- This is only
1796: here for now in case people think that the spec accidentally
1797: omitted it and try to "fix" it. Note that noscript-in-head is also
1798: handled this way. This is all intentional. The only thing it
1799: doesn't handle is the scripting-disabled fragment parsing case for
1800: a <head> element containing a <noscript> which itself contains
1801: something other than a <link> or a <style> element; you'd expect
1802: that to break out of the <noscript> but it doesn't. This is an edge
1803: case that doesn't affect the spec, since the algorithm for fragment
1804: parsing is only used for innerHTML/outerHTML/insertAdjacentHTML(),
1.333 mike 1805: where we know scripting is enabled. -->
1.1 mike 1806:
1.159 mike 1807: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.1 mike 1808: 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 abort these
1809: steps.</li>
1810:
1.5 mike 1811: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.1 mike 1812: 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 abort
1813: these steps. (<a href="#fragment-case">fragment case</a>)</li>
1814:
1.159 mike 1815: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1816: then <!--: if the <span><code title="">head</code> element
1817: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1818: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1819: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1820: to "<span title="insertion mode: after head">after head</span>".-->
1821: Then, <!-- in either case, --> abort these steps. (<a href="#fragment-case">fragment
1822: case</a>)</li> <!-- if the head element pointer can ever be
1823: non-null when we're going through these steps, we'll need to
1824: uncomment out the commented-out bits -->
1.1 mike 1825:
1826: <li>If <var title="">last</var> is true, then switch the
1827: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1828: body">in body</a>" and abort these steps. (<a href="#fragment-case">fragment
1829: case</a>)</li>
1830:
1831: <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
1832: elements</a>.</li>
1833:
1834: <li>Return to step 3.</li>
1835:
1836: </ol><h5 id="the-stack-of-open-elements"><span class="secno">9.2.3.2 </span>The stack of open elements</h5>
1837:
1838: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1839: stack grows downwards; the topmost node on the stack is the first
1840: one added to the stack, and the bottommost node of the stack is the
1841: most recently added node in the stack (notwithstanding when the
1842: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1843:
1844: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1845: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1846: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1847: stack.</p>
1848:
1849: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1850: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1851: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1852: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1853: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1854: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1855:
1.159 mike 1856: <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 1857: node of the stack. It never gets popped off the stack.</p>
1858:
1859: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1860: stack.</p>
1861:
1862: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1863: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1864: 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
1865: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1866: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1867: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1868:
1869: <p>Elements in the stack fall into the following categories:</p>
1870:
1871: <dl><dt><dfn id="special">Special</dfn></dt>
1872:
1873: <dd><p>The following HTML elements have varying levels of special
1874: 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>,
1875: <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>,
1.5 mike 1876: <code><a href="obsolete.html#basefont">basefont</a></code>, <code>bgsound</code>,
1.159 mike 1877: <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 1878: <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 1879: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID--><code>datagrid</code>,
1.422 mike 1880: <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>,
1881: <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>,
1882: <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>,
1883: <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>,
1884: <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>,
1885: <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>,
1886: <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>,
1887: <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>,
1888: (commented out because this isn't an element that can end up on the
1889: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
1890: <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>,
1891: <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>,
1892: <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>,
1893: <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>,
1894: <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>,
1895: <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>,
1896: <code><a href="forms.html#the-select-element">select</a></code>, <code><a href="obsolete.html#spacer">spacer</a></code>, <code><a href="semantics.html#the-style-element">style</a></code>,
1897: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>,
1898: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, <code><a href="semantics.html#the-title-element-0">title</a></code>, <code><a href="tabular-data.html#the-tr-element">tr</a></code>,
1899: <code><a href="semantics.html#the-ul-element">ul</a></code>, <code>wbr</code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 1900:
1901: <dt><dfn id="scoping">Scoping</dfn></dt>
1902: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
1903: an element in scope">scopes</a> for various parts of the
1.5 mike 1904: 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 1905: <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>,
1906: <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 1907: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
1908:
1909: <dt><dfn id="formatting">Formatting</dfn></dt>
1910: <dd><p>The following HTML elements are those that end up in the
1911: <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 1912: <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>,
1913: <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>,
1914: <code>nobr</code>, <code><a href="obsolete.html#s">s</a></code>, <code><a href="text-level-semantics.html#the-small-element">small</a></code>,
1915: <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
1916: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 1917:
1918: <dt><dfn id="phrasing">Phrasing</dfn></dt>
1919: <dd><p>All other elements found while parsing an HTML
1920: document.</p></dd>
1921:
1.234 mike 1922: </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
1923: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
1924: match state:</p>
1.1 mike 1925:
1926: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
1927: node</a> (the bottommost node of the stack).</p></li>
1928:
1929: <li><p>If <var title="">node</var> is the target node, terminate in
1930: a match state.</p></li>
1931:
1.234 mike 1932: <li><p>Otherwise, if <var title="">node</var> is one of the element
1933: types in <var title="">list</var>, terminate in a failure
1934: state.</p></li>
1.1 mike 1935:
1936: <li><p>Otherwise, set <var title="">node</var> to the previous
1937: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
1938: 2. (This will never fail, since the loop will always terminate in
1939: the previous step if the top of the stack — an
1.159 mike 1940: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 1941:
1.234 mike 1942: </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
1943: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
1944: of the following element types:</p>
1945:
1946: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
1947: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
1948: <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.) -->
1949: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
1950: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
1951: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
1952: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
1953: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
1954: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
1955: <li><code title="">foreignObject</code> in the SVG namespace</li>
1956: </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
1957: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
1958: scope</a> consisting of the following element types:</p>
1959:
1960: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
1961: in scope</a></i> algorithm.</li>
1962: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
1963: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
1964: </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
1965: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
1966: scope</a> consisting of the following element types:</p>
1967:
1968: <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.) -->
1969: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
1970: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 1971: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
1972: or removed from, the <code>Document</code> tree. In particular, the
1973: stack is not changed in this situation. This can cause, amongst
1974: other strange effects, content to be appended to nodes that are no
1975: longer in the DOM.</p>
1976:
1977: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
1978: the stack is manipulated in a random-access fashion.</p>
1979:
1980:
1981: <h5 id="the-list-of-active-formatting-elements"><span class="secno">9.2.3.3 </span>The list of active formatting elements</h5>
1982:
1983: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
1984: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
1985:
1986: <p>The list contains elements in the <a href="#formatting">formatting</a>
1987: category, and scope markers. The scope markers are inserted when
1.159 mike 1988: 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 1989: elements, marquees, table cells, and table captions, and are used to
1.5 mike 1990: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 1991: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 1992: tables.</p>
1993:
1994: <p class="note">The scope markers are unrelated to the concept of an
1995: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
1996: scope</a>.</p>
1997:
1998: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
1999: elements</a> is associated with the token for which it was
2000: created, so that further elements can be created for that token if
2001: necessary.</p>
2002:
2003: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
2004: active formatting elements</dfn>, the UA must perform the following
2005: steps:</p>
2006:
2007: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
2008: elements</a>, then there is nothing to reconstruct; stop this
2009: algorithm.</li>
2010:
2011: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2012: active formatting elements</a> is a marker, or if it is an
2013: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2014: there is nothing to reconstruct; stop this algorithm.</li>
2015:
2016: <li>Let <var title="">entry</var> be the last (most recently added)
2017: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2018: elements</a>.</li>
2019:
2020: <li>If there are no entries before <var title="">entry</var> in the
2021: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2022: 8.</li>
2023:
2024: <li>Let <var title="">entry</var> be the entry one earlier than
2025: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2026: elements</a>.</li>
2027:
2028: <li>If <var title="">entry</var> is neither a marker nor an element
2029: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2030: 4.</li>
2031:
2032: <li>Let <var title="">entry</var> be the element one later than
2033: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2034: elements</a>.</li>
2035:
2036: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2037: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2038:
2039: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2040: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2041: elements</a> so that it is the new <a href="#current-node">current
2042: node</a>.</li>
2043:
2044: <li>Replace the entry for <var title="">entry</var> in the list
2045: with an entry for <var title="">new element</var>.</li>
2046:
2047: <li>If the entry for <var title="">new element</var> in the
2048: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2049: entry in the list, return to step 7.</li>
2050:
2051: </ol><p>This has the effect of reopening all the formatting elements that
2052: were opened in the current body, cell, or caption (whichever is
2053: youngest) that haven't been explicitly closed.</p>
2054:
2055: <p class="note">The way this specification is written, the
2056: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2057: elements in chronological order with the least recently added
2058: element first and the most recently added element last (except for
2059: while steps 8 to 11 of the above algorithm are being executed, of
2060: course).</p>
2061:
2062: <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
2063: active formatting elements up to the last marker</dfn>, the UA must
2064: perform the following steps:</p>
2065:
2066: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2067: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2068:
2069: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2070: formatting elements</a>.</li>
2071:
2072: <li>If <var title="">entry</var> was a marker, then stop the
2073: algorithm at this point. The list has been cleared up to the last
2074: marker.</li>
2075:
2076: <li>Go to step 1.</li>
2077:
2078: </ol><h5 id="the-element-pointers"><span class="secno">9.2.3.4 </span>The element pointers</h5>
2079:
2080: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2081: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2082: pointer</dfn> are both null.</p>
2083:
1.159 mike 2084: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2085: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2086: element pointer</a> gets set to point to this node.</p>
2087:
2088: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2089: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2090: whose end tag has not yet been seen. It is used to make form
2091: controls associate with forms in the face of dramatically bad
2092: markup, for historical reasons.</p>
2093:
2094:
2095: <h5 id="other-parsing-state-flags"><span class="secno">9.2.3.5 </span>Other parsing state flags</h5>
2096:
2097: <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
2098: <code>Document</code> with which the parser is associated when the
2099: parser was created, and "disabled" otherwise.</p>
2100:
2101: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2102: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2103: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2104: don't execute in that case.</p>
2105:
2106: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2107: created. It is set to "not ok" after certain tokens are seen.</p>
2108:
1.266 mike 2109: </div><div class="impl">
1.1 mike 2110:
1.159 mike 2111: <h4 id="tokenization"><span class="secno">9.2.4 </span><dfn>Tokenization</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2112:
2113: <p>Implementations must act as if they used the following state
2114: machine to tokenize HTML. The state machine must start in the
2115: <a href="#data-state">data state</a>. Most states consume a single character,
2116: which may have various side-effects, and either switches the state
2117: machine to a new state to <em>reconsume</em> the same character, or
2118: switches it to a new state (to consume the next character), or
2119: repeats the same state (to consume the next character). Some states
2120: have more complicated behavior and can consume several characters
1.541 mike 2121: before switching to another state. In some cases, the tokenizer
2122: state is also changed by the tree construction stage.</p>
1.1 mike 2123:
1.541 mike 2124: <p>The exact behavior of certain states depends on the
2125: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2126: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2127: buffer</var></dfn> to track progress.</p>
1.1 mike 2128:
2129: <p>The output of the tokenization step is a series of zero or more
2130: of the following tokens: DOCTYPE, start tag, end tag, comment,
2131: character, end-of-file. DOCTYPE tokens have a name, a public
2132: identifier, a system identifier, and a <i>force-quirks
2133: flag</i>. When a DOCTYPE token is created, its name, public
2134: identifier, and system identifier must be marked as missing (which
2135: is a distinct state from the empty string), and the <i>force-quirks
2136: flag</i> must be set to <i>off</i> (its other state is
2137: <i>on</i>). Start and end tag tokens have a tag name, a
2138: <i>self-closing flag</i>, and a list of attributes, each of which
2139: has a name and a value. When a start or end tag token is created,
2140: its <i>self-closing flag</i> must be unset (its other state is that
2141: it be set), and its attributes list must be empty. Comment and
2142: character tokens have data.</p>
2143:
2144: <p>When a token is emitted, it must immediately be handled by the
2145: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2146: can affect the state of the tokenization stage, and can insert
2147: additional characters into the stream. (For example, the
1.1 mike 2148: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2149: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2150: characters into the stream being tokenized.)</p>
2151:
2152: <p>When a start tag token is emitted with its <i>self-closing
2153: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2154: self-closing flag">acknowledged</dfn> when it is processed by the
2155: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2156:
2157: <p>When an end tag token is emitted with attributes, that is a
2158: <a href="#parse-error">parse error</a>.</p>
2159:
2160: <p>When an end tag token is emitted with its <i>self-closing
2161: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2162:
1.541 mike 2163: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2164: tag name matches the tag name of the last start tag to have been
2165: emitted from this tokenizer, if any. If no start tag has been
2166: emitted from this tokenizer, then no end tag token is
2167: appropriate.</p>
2168:
1.1 mike 2169: <p>Before each step of the tokenizer, the user agent must first
2170: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2171: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2172: tokenizer, yielding control back to the caller.</p>
1.1 mike 2173:
2174: <p>The tokenizer state machine consists of the states defined in the
2175: following subsections.</p>
2176:
1.541 mike 2177:
1.333 mike 2178: <!-- Order of the lists below is supposed to be non-error then
2179: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2180:
1.541 mike 2181:
1.1 mike 2182: <h5 id="data-state"><span class="secno">9.2.4.1 </span><dfn>Data state</dfn></h5>
2183:
2184: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2185:
2186: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2187: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2188: state</a>.</dd>
1.1 mike 2189:
1.541 mike 2190: <dt>U+003C LESS-THAN SIGN (<)</dt>
2191: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2192:
2193: <dt>EOF</dt>
2194: <dd>Emit an end-of-file token.</dd>
2195:
2196: <dt>Anything else</dt>
2197: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2198: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2199:
1.541 mike 2200: </dl><h5 id="rcdata-state"><span class="secno">9.2.4.2 </span><dfn>RCDATA state</dfn></h5>
1.1 mike 2201:
1.541 mike 2202: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2203:
1.541 mike 2204: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
2205: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
2206: state</a>.</dd>
1.1 mike 2207:
2208: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2209: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2210:
2211: <dt>EOF</dt>
2212: <dd>Emit an end-of-file token.</dd>
1.1 mike 2213:
1.541 mike 2214: <dt>Anything else</dt>
2215: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2216: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2217:
1.541 mike 2218: </dl><h5 id="rawtext-state"><span class="secno">9.2.4.3 </span><dfn>RAWTEXT state</dfn></h5>
1.1 mike 2219:
1.541 mike 2220: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2221:
1.541 mike 2222: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2223: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2224:
2225: <dt>EOF</dt>
2226: <dd>Emit an end-of-file token.</dd>
2227:
2228: <dt>Anything else</dt>
1.541 mike 2229: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2230: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2231:
1.541 mike 2232: </dl><h5 id="script-data-state"><span class="secno">9.2.4.4 </span><dfn>Script data state</dfn></h5>
1.1 mike 2233:
1.541 mike 2234: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2235:
1.541 mike 2236: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2237: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2238:
1.541 mike 2239: <dt>EOF</dt>
2240: <dd>Emit an end-of-file token.</dd>
1.1 mike 2241:
1.541 mike 2242: <dt>Anything else</dt>
2243: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2244: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2245:
1.541 mike 2246: </dl><h5 id="plaintext-state"><span class="secno">9.2.4.5 </span><dfn>PLAINTEXT state</dfn></h5>
1.1 mike 2247:
1.541 mike 2248: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2249:
1.541 mike 2250: <dl class="switch"><dt>EOF</dt>
2251: <dd>Emit an end-of-file token.</dd>
1.1 mike 2252:
1.541 mike 2253: <dt>Anything else</dt>
2254: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2255: token. Stay in the <a href="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2256:
1.541 mike 2257: </dl><h5 id="character-reference-in-data-state"><span class="secno">9.2.4.6 </span><dfn>Character reference in data state</dfn></h5>
1.1 mike 2258:
1.541 mike 2259: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2260: <a href="#additional-allowed-character">additional allowed character</a>.</p>
1.1 mike 2261:
1.541 mike 2262: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2263: token.</p>
1.1 mike 2264:
1.541 mike 2265: <p>Otherwise, emit the character token that was returned.</p>
1.1 mike 2266:
1.541 mike 2267: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
1.1 mike 2268:
2269:
1.541 mike 2270: <h5 id="tag-open-state"><span class="secno">9.2.4.7 </span><dfn>Tag open state</dfn></h5>
1.1 mike 2271:
1.541 mike 2272: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2273:
1.541 mike 2274: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2275: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2276:
1.541 mike 2277: <dt>U+002F SOLIDUS (/)</dt>
2278: <dd>Switch to the <a href="#close-tag-open-state">close tag open state</a>.</dd>
1.1 mike 2279:
1.541 mike 2280: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2281: <dd>Create a new start tag token, set its tag name to the
2282: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2283: character's code point), then switch to the <a href="#tag-name-state">tag name
2284: state</a>. (Don't emit the token yet; further details will
2285: be filled in before it is emitted.)</dd>
1.1 mike 2286:
1.541 mike 2287: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2288: <dd>Create a new start tag token, set its tag name to the
2289: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2290: name state</a>. (Don't emit the token yet; further details will
2291: be filled in before it is emitted.)</dd>
1.1 mike 2292:
1.541 mike 2293: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2294: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2295: character token and a U+003E GREATER-THAN SIGN character
2296: token. Switch to the <a href="#data-state">data state</a>.</dd>
1.1 mike 2297:
1.541 mike 2298: <dt>U+003F QUESTION MARK (?)</dt>
2299: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2300: comment state</a>.</dd>
1.1 mike 2301:
1.541 mike 2302: <dt>Anything else</dt>
2303: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2304: character token and reconsume the <a href="#current-input-character">current input
2305: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2306:
1.541 mike 2307: </dl><h5 id="close-tag-open-state"><span class="secno">9.2.4.8 </span><dfn>Close tag open state</dfn></h5>
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:
2311: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2312: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2313: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2314: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2315: state</a>. (Don't emit the token yet; further details will be
2316: filled in before it is emitted.)</dd>
2317:
2318: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2319: <dd>Create a new end tag token, set its tag name to the
2320: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2321: name state</a>. (Don't emit the token yet; further details will
2322: be filled in before it is emitted.)</dd>
1.1 mike 2323:
2324: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2325: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2326: state</a>.</dd>
2327:
2328: <dt>EOF</dt>
2329: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2330: character token and a U+002F SOLIDUS character token. Reconsume
2331: the EOF character in the <a href="#data-state">data state</a>.</dd>
2332:
2333: <dt>Anything else</dt>
2334: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2335: comment state</a>.</dd>
2336:
1.541 mike 2337: </dl><h5 id="tag-name-state"><span class="secno">9.2.4.9 </span><dfn>Tag name state</dfn></h5>
1.1 mike 2338:
2339: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2340:
2341: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2342: <dt>U+000A LINE FEED (LF)</dt>
2343: <dt>U+000C FORM FEED (FF)</dt>
2344: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2345: <dt>U+0020 SPACE</dt>
2346: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2347:
2348: <dt>U+002F SOLIDUS (/)</dt>
2349: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2350:
2351: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2352: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2353: state</a>.</dd>
2354:
2355: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2356: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2357: character</a> (add 0x0020 to the character's code point) to the
2358: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2359: state</a>.</dd>
2360:
2361: <dt>EOF</dt>
2362: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2363: <a href="#data-state">data state</a>.</dd>
2364:
2365: <dt>Anything else</dt>
2366: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2367: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2368:
2369: </dl><h5 id="rcdata-less-than-sign-state"><span class="secno">9.2.4.10 </span><dfn>RCDATA less-than sign state</dfn></h5>
2370: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2371:
2372: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2373:
2374: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2375: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2376: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2377:
2378: <dt>Anything else</dt>
2379: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2380: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2381: state</a>.</dd>
2382:
2383: </dl><h5 id="rcdata-end-tag-open-state"><span class="secno">9.2.4.11 </span><dfn>RCDATA end tag open state</dfn></h5>
2384: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2385:
2386: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2387:
2388: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2389: <dd>Create a new end tag token, and set its tag name to the
2390: lowercase version of the <a href="#current-input-character">current input character</a> (add
2391: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2392: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2393: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2394: the token yet; further details will be filled in before it is
2395: emitted.)</dd>
2396:
2397: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2398: <dd>Create a new end tag token, and set its tag name to the
2399: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2400: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2401: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2402: the token yet; further details will be filled in before it is
2403: emitted.)</dd>
2404:
2405: <dt>Anything else</dt>
2406: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2407: character token, and reconsume the <a href="#current-input-character">current input
2408: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2409:
2410: </dl><h5 id="rcdata-end-tag-name-state"><span class="secno">9.2.4.12 </span><dfn>RCDATA end tag name state</dfn></h5>
2411: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2412:
2413: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2414:
2415: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2416: <dt>U+000A LINE FEED (LF)</dt>
2417: <dt>U+000C FORM FEED (FF)</dt>
2418: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2419: <dt>U+0020 SPACE</dt>
2420: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2421: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2422: state</a>. Otherwise, treat it as per the "anything else" entry
2423: below.</dd>
2424:
2425: <dt>U+002F SOLIDUS (/)</dt>
2426: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2427: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2428: state</a>. Otherwise, treat it as per the "anything else" entry
2429: below.</dd>
2430:
2431: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2432: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2433: token</a>, then emit the current tag token and switch to the
2434: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2435: else" entry below.</dd>
2436:
2437: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2438: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2439: character</a> (add 0x0020 to the character's code point) to the
2440: current tag token's tag name. Append the <a href="#current-input-character">current input
2441: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2442: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2443:
2444: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2445: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2446: tag token's tag name. Append the <a href="#current-input-character">current input
2447: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2448: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2449:
2450: <dt>Anything else</dt>
2451: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2452: character token, a character token for each of the characters in
2453: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2454: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2455: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2456:
2457: </dl><h5 id="rawtext-less-than-sign-state"><span class="secno">9.2.4.13 </span><dfn>RAWTEXT less-than sign state</dfn></h5>
2458: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2459:
2460: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2461:
2462: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2463: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2464: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2465:
2466: <dt>Anything else</dt>
2467: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2468: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2469: state</a>.</dd>
2470:
2471: </dl><h5 id="rawtext-end-tag-open-state"><span class="secno">9.2.4.14 </span><dfn>RAWTEXT end tag open state</dfn></h5>
2472: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2473:
2474: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2475:
2476: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2477: <dd>Create a new end tag token, and set its tag name to the
2478: lowercase version of the <a href="#current-input-character">current input character</a> (add
2479: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2480: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2481: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2482: the token yet; further details will be filled in before it is
2483: emitted.)</dd>
2484:
2485: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2486: <dd>Create a new end tag token, and set its tag name to the
2487: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2488: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2489: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2490: the token yet; further details will be filled in before it is
2491: emitted.)</dd>
2492:
2493: <dt>Anything else</dt>
2494: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2495: character token, and reconsume the <a href="#current-input-character">current input
2496: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2497:
2498: </dl><h5 id="rawtext-end-tag-name-state"><span class="secno">9.2.4.15 </span><dfn>RAWTEXT end tag name state</dfn></h5>
2499: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2500:
2501: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2502:
2503: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2504: <dt>U+000A LINE FEED (LF)</dt>
2505: <dt>U+000C FORM FEED (FF)</dt>
2506: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2507: <dt>U+0020 SPACE</dt>
2508: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2509: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2510: state</a>. Otherwise, treat it as per the "anything else" entry
2511: below.</dd>
2512:
2513: <dt>U+002F SOLIDUS (/)</dt>
2514: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2515: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2516: state</a>. Otherwise, treat it as per the "anything else" entry
2517: below.</dd>
2518:
2519: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2520: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2521: token</a>, then emit the current tag token and switch to the
2522: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2523: else" entry below.</dd>
2524:
2525: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2526: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2527: character</a> (add 0x0020 to the character's code point) to the
2528: current tag token's tag name. Append the <a href="#current-input-character">current input
2529: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2530: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2531:
2532: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2533: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2534: tag token's tag name. Append the <a href="#current-input-character">current input
2535: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2536: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2537:
2538: <dt>Anything else</dt>
2539: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2540: character token, a character token for each of the characters in
2541: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2542: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2543: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2544:
2545: </dl><h5 id="script-data-less-than-sign-state"><span class="secno">9.2.4.16 </span><dfn>Script data less-than sign state</dfn></h5>
2546:
2547: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2548:
2549: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2550: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2551: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2552:
2553: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2554: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2555: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2556: escape start state</a>.</dd>
2557:
2558: <dt>Anything else</dt>
2559: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2560: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2561: state</a>.</dd>
2562:
2563: </dl><h5 id="script-data-end-tag-open-state"><span class="secno">9.2.4.17 </span><dfn>Script data end tag open state</dfn></h5>
2564: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2565:
2566: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2567:
2568: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2569: <dd>Create a new end tag token, and set its tag name to the
2570: lowercase version of the <a href="#current-input-character">current input character</a> (add
2571: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2572: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2573: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2574: the token yet; further details will be filled in before it is
2575: emitted.)</dd>
2576:
2577: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2578: <dd>Create a new end tag token, and set its tag name to the
2579: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2580: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2581: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2582: the token yet; further details will be filled in before it is
2583: emitted.)</dd>
2584:
2585: <dt>Anything else</dt>
2586: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2587: character token, and reconsume the <a href="#current-input-character">current input
2588: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2589:
2590: </dl><h5 id="script-data-end-tag-name-state"><span class="secno">9.2.4.18 </span><dfn>Script data end tag name state</dfn></h5>
2591: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2592:
2593: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2594:
2595: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2596: <dt>U+000A LINE FEED (LF)</dt>
2597: <dt>U+000C FORM FEED (FF)</dt>
2598: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2599: <dt>U+0020 SPACE</dt>
2600: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2601: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2602: state</a>. Otherwise, treat it as per the "anything else" entry
2603: below.</dd>
2604:
2605: <dt>U+002F SOLIDUS (/)</dt>
2606: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2607: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2608: state</a>. Otherwise, treat it as per the "anything else" entry
2609: below.</dd>
2610:
2611: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2612: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2613: token</a>, then emit the current tag token and switch to the
2614: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2615: else" entry below.</dd>
2616:
2617: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2618: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2619: character</a> (add 0x0020 to the character's code point) to the
2620: current tag token's tag name. Append the <a href="#current-input-character">current input
2621: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2622: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2623:
2624: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2625: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2626: tag token's tag name. Append the <a href="#current-input-character">current input
2627: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2628: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2629:
2630: <dt>Anything else</dt>
2631: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2632: character token, a character token for each of the characters in
2633: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2634: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2635: in the <a href="#script-data-state">script data state</a>.</dd>
2636:
2637: </dl><h5 id="script-data-escape-start-state"><span class="secno">9.2.4.19 </span><dfn>Script data escape start state</dfn></h5>
2638:
2639: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2640:
2641: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2642: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2643: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2644:
2645: <dt>Anything else</dt>
2646: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2647: <a href="#script-data-state">script data state</a>.</dd>
2648:
2649: </dl><h5 id="script-data-escape-start-dash-state"><span class="secno">9.2.4.20 </span><dfn>Script data escape start dash state</dfn></h5>
2650:
2651: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2652:
2653: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2654: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2655: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2656:
2657: <dt>Anything else</dt>
2658: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2659: <a href="#script-data-state">script data state</a>.</dd>
2660:
2661: </dl><h5 id="script-data-escaped-state"><span class="secno">9.2.4.21 </span><dfn>Script data escaped state</dfn></h5>
2662:
2663: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2664:
2665: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2666: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2667: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2668:
1.542 mike 2669: <dt>U+003C LESS-THAN SIGN (<)</dt>
2670: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2671: state</a>.</p></dd>
2672:
1.541 mike 2673: <dt>EOF</dt>
2674: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2675: <a href="#data-state">data state</a>.</dd>
2676:
2677: <dt>Anything else</dt>
1.542 mike 2678: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2679: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2680:
2681: </dl><h5 id="script-data-escaped-dash-state"><span class="secno">9.2.4.22 </span><dfn>Script data escaped dash state</dfn></h5>
2682:
2683: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2684:
2685: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2686: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2687: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2688:
1.542 mike 2689: <dt>U+003C LESS-THAN SIGN (<)</dt>
2690: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2691: state</a>.</p></dd>
2692:
1.541 mike 2693: <dt>EOF</dt>
2694: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2695: <a href="#data-state">data state</a>.</dd>
2696:
2697: <dt>Anything else</dt>
1.542 mike 2698: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2699: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2700:
2701: </dl><h5 id="script-data-escaped-dash-dash-state"><span class="secno">9.2.4.23 </span><dfn>Script data escaped dash dash state</dfn></h5>
2702:
2703: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2704:
2705: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2706: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2707: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2708:
1.542 mike 2709: <dt>U+003C LESS-THAN SIGN (<)</dt>
2710: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2711: state</a>.</p></dd>
2712:
1.541 mike 2713: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2714: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2715: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2716:
2717: <dt>EOF</dt>
2718: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2719: <a href="#data-state">data state</a>.</dd>
2720:
2721: <dt>Anything else</dt>
1.542 mike 2722: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2723: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2724:
2725: </dl><h5 id="script-data-escaped-less-than-sign-state"><span class="secno">9.2.4.24 </span><dfn>Script data escaped less-than sign state</dfn></h5>
2726:
2727: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2728:
2729: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2730: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2731: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2732:
2733: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2734: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2735: <a href="#current-input-character">current input character</a> as a character token. Set the
2736: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2737: lowercase version of the <a href="#current-input-character">current input character</a> (add
2738: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2739: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2740: state</a>.</dd>
2741:
2742: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2743: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2744: <a href="#current-input-character">current input character</a> as a character token. Set the
2745: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2746: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2747: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2748: state</a>.</dd>
2749:
2750: <dt>Anything else</dt>
2751: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2752: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2753: escaped state</a>.</dd>
2754:
2755: </dl><h5 id="script-data-escaped-end-tag-open-state"><span class="secno">9.2.4.25 </span><dfn>Script data escaped end tag open state</dfn></h5>
2756:
2757: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2758:
2759: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2760: <dd>Create a new end tag token, and set its tag name to the
2761: lowercase version of the <a href="#current-input-character">current input character</a> (add
2762: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2763: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2764: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2765: state</a>. (Don't emit the token yet; further details will be
2766: filled in before it is emitted.)</dd>
2767:
2768: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2769: <dd>Create a new end tag token, and set its tag name to the
2770: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2771: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2772: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2773: state</a>. (Don't emit the token yet; further details will be
2774: filled in before it is emitted.)</dd>
2775:
2776: <dt>Anything else</dt>
2777: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2778: character token, and reconsume the <a href="#current-input-character">current input
2779: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2780:
2781: </dl><h5 id="script-data-escaped-end-tag-name-state"><span class="secno">9.2.4.26 </span><dfn>Script data escaped end tag name state</dfn></h5>
2782:
2783: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2784:
2785: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2786: <dt>U+000A LINE FEED (LF)</dt>
2787: <dt>U+000C FORM FEED (FF)</dt>
2788: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2789: <dt>U+0020 SPACE</dt>
2790: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2791: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2792: state</a>. Otherwise, treat it as per the "anything else" entry
2793: below.</dd>
2794:
2795: <dt>U+002F SOLIDUS (/)</dt>
2796: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2797: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2798: state</a>. Otherwise, treat it as per the "anything else" entry
2799: below.</dd>
2800:
2801: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2802: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2803: token</a>, then emit the current tag token and switch to the
2804: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2805: else" entry below.</dd>
2806:
2807: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2808: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2809: character</a> (add 0x0020 to the character's code point) to the
2810: current tag token's tag name. Append the <a href="#current-input-character">current input
2811: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2812: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2813:
2814: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2815: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2816: tag token's tag name. Append the <a href="#current-input-character">current input
2817: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2818: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2819:
2820: <dt>Anything else</dt>
2821: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2822: character token, a character token for each of the characters in
2823: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2824: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2825: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2826:
2827: </dl><h5 id="script-data-double-escape-start-state"><span class="secno">9.2.4.27 </span><dfn>Script data double escape start state</dfn></h5>
2828:
2829: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2830:
2831: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2832: <dt>U+000A LINE FEED (LF)</dt>
2833: <dt>U+000C FORM FEED (FF)</dt>
2834: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2835: <dt>U+0020 SPACE</dt>
2836: <dt>U+002F SOLIDUS (/)</dt>
2837: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2838: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2839: 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
2840: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2841: data escaped state</a>.</dd>
2842:
2843: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2844: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2845: token. Append the lowercase version of the <a href="#current-input-character">current input
2846: character</a> (add 0x0020 to the character's code point) to the
2847: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2848: escape start state</a>.</dd>
2849:
2850: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2851: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2852: token. Append the <a href="#current-input-character">current input character</a> to the
2853: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2854: escape start state</a>.</dd>
2855:
2856: <dt>Anything else</dt>
2857: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2858: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2859:
2860: </dl><h5 id="script-data-double-escaped-state"><span class="secno">9.2.4.28 </span><dfn>Script data double escaped state</dfn></h5>
2861:
2862: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2863:
2864: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2865: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2866: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2867:
2868: <dt>U+003C LESS-THAN SIGN (<)</dt>
2869: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2870: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2871: state</a>.</p></dd>
2872:
2873: <dt>EOF</dt>
2874: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2875: <a href="#data-state">data state</a>.</dd>
2876:
2877: <dt>Anything else</dt>
2878: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2879: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
2880: state</a>.</dd>
2881:
2882: </dl><h5 id="script-data-double-escaped-dash-state"><span class="secno">9.2.4.29 </span><dfn>Script data double escaped dash state</dfn></h5>
2883:
2884: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2885:
2886: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2887: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2888: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2889:
2890: <dt>U+003C LESS-THAN SIGN (<)</dt>
2891: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2892: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2893: state</a>.</p></dd>
2894:
2895: <dt>EOF</dt>
2896: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2897: <a href="#data-state">data state</a>.</dd>
2898:
2899: <dt>Anything else</dt>
2900: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2901: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2902: state</a>.</dd>
2903:
2904: </dl><h5 id="script-data-double-escaped-dash-dash-state"><span class="secno">9.2.4.30 </span><dfn>Script data double escaped dash dash state</dfn></h5>
2905:
2906: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2907:
2908: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2909: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2910: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2911:
2912: <dt>U+003C LESS-THAN SIGN (<)</dt>
2913: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2914: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2915: state</a>.</p></dd>
2916:
2917: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2918: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2919: <a href="#script-data-state">script data state</a>.</dd>
2920:
2921: <dt>EOF</dt>
2922: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2923: <a href="#data-state">data state</a>.</dd>
2924:
2925: <dt>Anything else</dt>
2926: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2927: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2928: state</a>.</dd>
2929:
2930: </dl><h5 id="script-data-double-escaped-less-than-sign-state"><span class="secno">9.2.4.31 </span><dfn>Script data double escaped less-than sign state</dfn></h5>
2931:
2932: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2933:
2934: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2935: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
2936: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
2937: double escape end state</a>.</dd>
2938:
2939: <dt>Anything else</dt>
2940: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2941: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
2942:
2943: </dl><h5 id="script-data-double-escape-end-state"><span class="secno">9.2.4.32 </span><dfn>Script data double escape end state</dfn></h5>
2944:
2945: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2946:
2947: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2948: <dt>U+000A LINE FEED (LF)</dt>
2949: <dt>U+000C FORM FEED (FF)</dt>
2950: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2951: <dt>U+0020 SPACE</dt>
2952: <dt>U+002F SOLIDUS (/)</dt>
2953: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2954: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2955: 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
2956: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
2957: double escaped state</a>.</dd>
2958:
2959: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2960: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2961: token. Append the lowercase version of the <a href="#current-input-character">current input
2962: character</a> (add 0x0020 to the character's code point) to the
2963: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
2964: escape end state</a>.</dd>
2965:
2966: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2967: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2968: token. Append the <a href="#current-input-character">current input character</a> to the
2969: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
2970: escape end state</a>.</dd>
2971:
2972: <dt>Anything else</dt>
2973: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2974: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 2975:
1.542 mike 2976: </dl><h5 id="before-attribute-name-state"><span class="secno">9.2.4.33 </span><dfn>Before attribute name state</dfn></h5>
1.1 mike 2977:
2978: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2979:
2980: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2981: <dt>U+000A LINE FEED (LF)</dt>
2982: <dt>U+000C FORM FEED (FF)</dt>
2983: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2984: <dt>U+0020 SPACE</dt>
2985: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2986:
2987: <dt>U+002F SOLIDUS (/)</dt>
2988: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2989:
2990: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2991: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2992: state</a>.</dd>
2993:
2994: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2995: <dd>Start a new attribute in the current tag token. Set that
2996: attribute's name to the lowercase version of the <a href="#current-input-character">current input
2997: character</a> (add 0x0020 to the character's code point), and its
2998: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
2999: state</a>.</dd>
3000:
3001: <dt>U+0022 QUOTATION MARK (")</dt>
3002: <dt>U+0027 APOSTROPHE (')</dt>
3003: <dt>U+003C LESS-THAN SIGN (<)</dt>
3004: <dt>U+003D EQUALS SIGN (=)</dt>
3005: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3006: entry below.</dd>
3007:
3008: <dt>EOF</dt>
3009: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3010: <a href="#data-state">data state</a>.</dd>
3011:
3012: <dt>Anything else</dt>
3013: <dd>Start a new attribute in the current tag token. Set that
3014: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3015: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3016: state</a>.</dd>
3017:
1.542 mike 3018: </dl><h5 id="attribute-name-state"><span class="secno">9.2.4.34 </span><dfn>Attribute name state</dfn></h5>
1.1 mike 3019:
3020: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3021:
3022: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3023: <dt>U+000A LINE FEED (LF)</dt>
3024: <dt>U+000C FORM FEED (FF)</dt>
3025: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3026: <dt>U+0020 SPACE</dt>
3027: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3028:
3029: <dt>U+002F SOLIDUS (/)</dt>
3030: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3031:
3032: <dt>U+003D EQUALS SIGN (=)</dt>
3033: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3034:
3035: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3036: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3037: state</a>.</dd>
3038:
3039: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3040: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3041: character</a> (add 0x0020 to the character's code point) to the
3042: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3043: state</a>.</dd>
3044:
3045: <dt>U+0022 QUOTATION MARK (")</dt>
3046: <dt>U+0027 APOSTROPHE (')</dt>
3047: <dt>U+003C LESS-THAN SIGN (<)</dt>
3048: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3049: entry below.</dd>
3050:
3051: <dt>EOF</dt>
3052: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3053: <a href="#data-state">data state</a>.</dd>
3054:
3055: <dt>Anything else</dt>
1.541 mike 3056: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3057: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3058: state</a>.</dd>
1.1 mike 3059:
3060: </dl><p>When the user agent leaves the attribute name state (and before
3061: emitting the tag token, if appropriate), the complete attribute's
3062: name must be compared to the other attributes on the same token;
3063: if there is already an attribute on the token with the exact same
3064: name, then this is a <a href="#parse-error">parse error</a> and the new
3065: attribute must be dropped, along with the value that gets
3066: associated with it (if any).</p>
3067:
3068:
1.542 mike 3069: <h5 id="after-attribute-name-state"><span class="secno">9.2.4.35 </span><dfn>After attribute name state</dfn></h5>
1.1 mike 3070:
3071: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3072:
3073: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3074: <dt>U+000A LINE FEED (LF)</dt>
3075: <dt>U+000C FORM FEED (FF)</dt>
3076: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3077: <dt>U+0020 SPACE</dt>
3078: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3079:
3080: <dt>U+002F SOLIDUS (/)</dt>
3081: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3082:
3083: <dt>U+003D EQUALS SIGN (=)</dt>
3084: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3085:
3086: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3087: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3088: state</a>.</dd>
3089:
3090: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3091: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3092: attribute's name to the lowercase version of the <a href="#current-input-character">current
3093: input character</a> (add 0x0020 to the character's code point),
3094: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3095: name state</a>.</dd>
1.1 mike 3096:
3097: <dt>U+0022 QUOTATION MARK (")</dt>
3098: <dt>U+0027 APOSTROPHE (')</dt>
3099: <dt>U+003C LESS-THAN SIGN (<)</dt>
3100: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3101: entry below.</dd>
3102:
3103: <dt>EOF</dt>
3104: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3105: <a href="#data-state">data state</a>.</dd>
3106:
3107: <dt>Anything else</dt>
3108: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3109: attribute's name to the <a href="#current-input-character">current input character</a>, and
3110: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3111: state</a>.</dd>
3112:
1.542 mike 3113: </dl><h5 id="before-attribute-value-state"><span class="secno">9.2.4.36 </span><dfn>Before attribute value state</dfn></h5>
1.1 mike 3114:
3115: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3116:
3117: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3118: <dt>U+000A LINE FEED (LF)</dt>
3119: <dt>U+000C FORM FEED (FF)</dt>
3120: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3121: <dt>U+0020 SPACE</dt>
3122: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3123:
3124: <dt>U+0022 QUOTATION MARK (")</dt>
3125: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3126:
3127: <dt>U+0026 AMPERSAND (&)</dt>
3128: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3129: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3130:
3131: <dt>U+0027 APOSTROPHE (')</dt>
3132: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3133:
3134: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3135: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3136: the <a href="#data-state">data state</a>.</dd>
3137:
3138: <dt>U+003C LESS-THAN SIGN (<)</dt>
3139: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3140: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3141: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3142: entry below.</dd>
3143:
3144: <dt>EOF</dt>
3145: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3146: <a href="#data-state">data state</a>.</dd>
3147:
3148: <dt>Anything else</dt>
3149: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3150: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3151: state</a>.</dd>
3152:
1.542 mike 3153: </dl><h5 id="attribute-value-double-quoted-state"><span class="secno">9.2.4.37 </span><dfn>Attribute value (double-quoted) state</dfn></h5>
1.1 mike 3154:
3155: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3156:
3157: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3158: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3159: state</a>.</dd>
3160:
3161: <dt>U+0026 AMPERSAND (&)</dt>
3162: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3163: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3164: being U+0022 QUOTATION MARK (").</dd>
3165:
3166: <dt>EOF</dt>
3167: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3168: <a href="#data-state">data state</a>.</dd>
3169:
3170: <dt>Anything else</dt>
1.541 mike 3171: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3172: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3173: (double-quoted) state</a>.</dd>
1.1 mike 3174:
1.542 mike 3175: </dl><h5 id="attribute-value-single-quoted-state"><span class="secno">9.2.4.38 </span><dfn>Attribute value (single-quoted) state</dfn></h5>
1.1 mike 3176:
3177: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3178:
3179: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3180: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3181: state</a>.</dd>
3182:
3183: <dt>U+0026 AMPERSAND (&)</dt>
3184: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3185: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3186: being U+0027 APOSTROPHE (').</dd>
3187:
3188: <dt>EOF</dt>
3189: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3190: <a href="#data-state">data state</a>.</dd>
3191:
3192: <dt>Anything else</dt>
1.541 mike 3193: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3194: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3195: (single-quoted) state</a>.</dd>
1.1 mike 3196:
1.542 mike 3197: </dl><h5 id="attribute-value-unquoted-state"><span class="secno">9.2.4.39 </span><dfn>Attribute value (unquoted) state</dfn></h5>
1.1 mike 3198:
3199: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3200:
3201: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3202: <dt>U+000A LINE FEED (LF)</dt>
3203: <dt>U+000C FORM FEED (FF)</dt>
3204: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3205: <dt>U+0020 SPACE</dt>
3206: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3207:
3208: <dt>U+0026 AMPERSAND (&)</dt>
3209: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3210: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3211: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3212:
3213: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3214: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3215: state</a>.</dd>
3216:
3217: <dt>U+0022 QUOTATION MARK (")</dt>
3218: <dt>U+0027 APOSTROPHE (')</dt>
3219: <dt>U+003C LESS-THAN SIGN (<)</dt>
3220: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3221: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3222: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3223: entry below.</dd>
3224:
3225: <dt>EOF</dt>
3226: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3227: <a href="#data-state">data state</a>.</dd>
3228:
3229: <dt>Anything else</dt>
1.541 mike 3230: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3231: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3232: state</a>.</dd>
3233:
1.542 mike 3234: </dl><h5 id="character-reference-in-attribute-value-state"><span class="secno">9.2.4.40 </span><dfn>Character reference in attribute value state</dfn></h5>
1.1 mike 3235:
3236: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3237:
3238: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3239: the current attribute's value.</p>
3240:
3241: <p>Otherwise, append the returned character token to the current
3242: attribute's value.</p>
3243:
3244: <p>Finally, switch back to the attribute value state that you were
3245: in when were switched into this state.</p>
3246:
3247:
1.542 mike 3248: <h5 id="after-attribute-value-quoted-state"><span class="secno">9.2.4.41 </span><dfn>After attribute value (quoted) state</dfn></h5>
1.1 mike 3249:
3250: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3251:
3252: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3253: <dt>U+000A LINE FEED (LF)</dt>
3254: <dt>U+000C FORM FEED (FF)</dt>
3255: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3256: <dt>U+0020 SPACE</dt>
3257: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3258:
3259: <dt>U+002F SOLIDUS (/)</dt>
3260: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3261:
3262: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3263: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3264: state</a>.</dd>
3265:
3266: <dt>EOF</dt>
3267: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3268: <a href="#data-state">data state</a>.</dd>
3269:
3270: <dt>Anything else</dt>
3271: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3272: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3273:
1.542 mike 3274: </dl><h5 id="self-closing-start-tag-state"><span class="secno">9.2.4.42 </span><dfn>Self-closing start tag state</dfn></h5>
1.1 mike 3275:
3276: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3277:
3278: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3279: <dd>Set the <i>self-closing flag</i> of the current tag
3280: token. Emit the current tag token. Switch to the <a href="#data-state">data
3281: state</a>.</dd>
3282:
3283: <dt>EOF</dt>
3284: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3285: <a href="#data-state">data state</a>.</dd>
3286:
3287: <dt>Anything else</dt>
3288: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3289: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3290:
1.542 mike 3291: </dl><h5 id="bogus-comment-state"><span class="secno">9.2.4.43 </span><dfn>Bogus comment state</dfn></h5>
1.1 mike 3292:
3293: <p>Consume every character up to and including the first U+003E
3294: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3295: whichever comes first. Emit a comment token whose data is the
3296: concatenation of all the characters starting from and including
3297: the character that caused the state machine to switch into the
3298: bogus comment state, up to and including the character immediately
3299: before the last consumed character (i.e. up to the character just
3300: before the U+003E or EOF character). (If the comment was started
3301: by the end of the file (EOF), the token is empty.)</p>
3302:
3303: <p>Switch to the <a href="#data-state">data state</a>.</p>
3304:
3305: <p>If the end of the file was reached, reconsume the EOF
3306: character.</p>
3307:
3308:
1.542 mike 3309: <h5 id="markup-declaration-open-state"><span class="secno">9.2.4.44 </span><dfn>Markup declaration open state</dfn></h5>
1.1 mike 3310:
3311: <p>If the next two characters are both U+002D HYPHEN-MINUS (-)
3312: characters, consume those two characters, create a comment token
3313: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3314: start state</a>.</p>
3315:
3316: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3317: case-insensitive</a> match for the word "DOCTYPE", then consume
3318: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3319:
3320: <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
3321: content</a>" and the <a href="#current-node">current node</a> is not an element
3322: in the <a href="#html-namespace-0">HTML namespace</a> and the next seven characters are
1.585 mike 3323: an <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "[CDATA[" (the
3324: five uppercase letters "CDATA" with a U+005B LEFT SQUARE BRACKET
3325: character before and after), then consume those characters and
3326: switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3327:
3328: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3329: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3330: consumed, if any, is the first character that will be in the
3331: comment.</p>
3332:
3333:
1.542 mike 3334: <h5 id="comment-start-state"><span class="secno">9.2.4.45 </span><dfn>Comment start state</dfn></h5>
1.1 mike 3335:
3336: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3337:
3338: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3339: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3340:
3341: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3342: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3343: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3344: -->
3345:
3346: <dt>EOF</dt>
3347: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3348: the EOF character in the <a href="#data-state">data state</a>.</dd>
3349:
3350: <dt>Anything else</dt>
1.541 mike 3351: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3352: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3353:
1.542 mike 3354: </dl><h5 id="comment-start-dash-state"><span class="secno">9.2.4.46 </span><dfn>Comment start dash state</dfn></h5>
1.1 mike 3355:
3356: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3357:
3358: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3359: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3360:
3361: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3362: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3363: the <a href="#data-state">data state</a>.</dd>
3364:
3365: <dt>EOF</dt>
3366: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3367: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3368: in comment end state -->
3369:
3370: <dt>Anything else</dt>
1.541 mike 3371: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3372: <a href="#current-input-character">current input character</a> to the comment token's
3373: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3374:
1.542 mike 3375: </dl><h5 id="comment-state"><span class="secno">9.2.4.47 </span><dfn id="comment">Comment state</dfn></h5>
1.1 mike 3376:
3377: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3378:
3379: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3380: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3381:
3382: <dt>EOF</dt>
3383: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3384: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3385: in comment end state -->
3386:
3387: <dt>Anything else</dt>
1.541 mike 3388: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3389: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3390:
1.542 mike 3391: </dl><h5 id="comment-end-dash-state"><span class="secno">9.2.4.48 </span><dfn>Comment end dash state</dfn></h5>
1.1 mike 3392:
3393: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3394:
3395: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3396: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3397:
3398: <dt>EOF</dt>
3399: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3400: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3401: in comment end state -->
3402:
3403: <dt>Anything else</dt>
1.541 mike 3404: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3405: <a href="#current-input-character">current input character</a> to the comment token's
3406: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3407:
1.542 mike 3408: </dl><h5 id="comment-end-state"><span class="secno">9.2.4.49 </span><dfn>Comment end state</dfn></h5>
1.1 mike 3409:
3410: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3411:
3412: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3413: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3414: state</a>.</dd>
3415:
3416: <dt>U+0009 CHARACTER TABULATION</dt>
3417: <dt>U+000A LINE FEED (LF)</dt>
3418: <dt>U+000C FORM FEED (FF)</dt>
3419: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3420: <dt>U+0020 SPACE</dt>
3421: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS (-)
1.541 mike 3422: characters and the <a href="#current-input-character">current input character</a> to the
3423: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3424: state</a>.</dd>
1.1 mike 3425:
3426: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3427: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3428: state</a>.</dd>
3429:
1.333 mike 3430: <dt>U+002D HYPHEN-MINUS (-)</dt>
3431: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3432: character (-) to the comment token's data. Stay in the
1.333 mike 3433: <a href="#comment-end-state">comment end state</a>.</dd>
3434:
1.1 mike 3435: <dt>EOF</dt>
3436: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3437: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
3438: security reasons: otherwise, hostile user could put a <script> in
3439: a comment e.g. in a blog comment and then DOS the server so that
3440: the end tag isn't read, and then the commented <script> tag would
3441: be treated as live code -->
3442:
3443: <dt>Anything else</dt>
3444: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS (-)
1.541 mike 3445: characters and the <a href="#current-input-character">current input character</a> to the
3446: comment token's data. Switch to the <a href="#comment-state">comment
3447: state</a>.</dd>
1.1 mike 3448:
1.542 mike 3449: </dl><h5 id="comment-end-bang-state"><span class="secno">9.2.4.50 </span><dfn>Comment end bang state</dfn></h5>
1.1 mike 3450:
3451: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3452:
1.333 mike 3453: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.1 mike 3454: <dd>Append two U+002D HYPHEN-MINUS (-) characters and a U+0021
1.464 mike 3455: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3456: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3457:
1.333 mike 3458: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3459: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3460: state</a>.</dd>
3461:
1.1 mike 3462: <dt>EOF</dt>
3463: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3464: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3465: comment in comment end state -->
3466:
3467: <dt>Anything else</dt>
3468: <dd>Append two U+002D HYPHEN-MINUS (-) characters, a U+0021
1.541 mike 3469: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3470: character</a> to the comment token's data. Switch to the
3471: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3472:
1.542 mike 3473: </dl><h5 id="comment-end-space-state"><span class="secno">9.2.4.51 </span><dfn>Comment end space state</dfn></h5>
1.1 mike 3474:
3475: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3476:
1.333 mike 3477: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3478: <dt>U+000A LINE FEED (LF)</dt>
3479: <dt>U+000C FORM FEED (FF)</dt>
3480: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3481: <dt>U+0020 SPACE</dt>
1.541 mike 3482: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3483: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3484:
1.333 mike 3485: <dt>U+002D HYPHEN-MINUS (-)</dt>
3486: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3487:
3488: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3489: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3490: state</a>.</dd>
3491:
1.1 mike 3492: <dt>EOF</dt>
3493: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3494: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3495: comment in comment end state -->
3496:
3497: <dt>Anything else</dt>
1.541 mike 3498: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3499: to the <a href="#comment-state">comment state</a>.</dd>
3500:
1.542 mike 3501: </dl><h5 id="doctype-state"><span class="secno">9.2.4.52 </span><dfn>DOCTYPE state</dfn></h5>
1.1 mike 3502:
3503: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3504:
3505: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3506: <dt>U+000A LINE FEED (LF)</dt>
3507: <dt>U+000C FORM FEED (FF)</dt>
3508: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3509: <dt>U+0020 SPACE</dt>
3510: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3511:
3512: <dt>EOF</dt>
3513: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3514: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3515: the EOF character in the <a href="#data-state">data state</a>.</dd>
3516:
3517: <dt>Anything else</dt>
3518: <dd><a href="#parse-error">Parse error</a>. Reconsume the current
3519: character in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3520:
1.542 mike 3521: </dl><h5 id="before-doctype-name-state"><span class="secno">9.2.4.53 </span><dfn>Before DOCTYPE name state</dfn></h5>
1.1 mike 3522:
3523: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3524:
3525: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3526: <dt>U+000A LINE FEED (LF)</dt>
3527: <dt>U+000C FORM FEED (FF)</dt>
3528: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3529: <dt>U+0020 SPACE</dt>
3530: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3531:
3532: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3533: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3534: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3535: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3536: state</a>.</dd>
3537:
1.333 mike 3538: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3539: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3540: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3541: the <a href="#data-state">data state</a>.</dd>
3542:
1.1 mike 3543: <dt>EOF</dt>
3544: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3545: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3546: the EOF character in the <a href="#data-state">data state</a>.</dd>
3547:
3548: <dt>Anything else</dt>
3549: <dd>Create a new DOCTYPE token. Set the token's name to the
3550: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3551: state</a>.</dd>
3552:
1.542 mike 3553: </dl><h5 id="doctype-name-state"><span class="secno">9.2.4.54 </span><dfn>DOCTYPE name state</dfn></h5>
1.1 mike 3554:
3555: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3556:
3557: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3558: <dt>U+000A LINE FEED (LF)</dt>
3559: <dt>U+000C FORM FEED (FF)</dt>
3560: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3561: <dt>U+0020 SPACE</dt>
3562: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3563:
3564: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3565: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3566: state</a>.</dd>
3567:
3568: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3569: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3570: character</a> (add 0x0020 to the character's code point) to the
3571: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3572: state</a>.</dd>
1.1 mike 3573:
3574: <dt>EOF</dt>
3575: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3576: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3577: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3578:
3579: <dt>Anything else</dt>
1.541 mike 3580: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3581: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3582: state</a>.</dd>
1.1 mike 3583:
1.542 mike 3584: </dl><h5 id="after-doctype-name-state"><span class="secno">9.2.4.55 </span><dfn>After DOCTYPE name state</dfn></h5>
1.1 mike 3585:
3586: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3587:
3588: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3589: <dt>U+000A LINE FEED (LF)</dt>
3590: <dt>U+000C FORM FEED (FF)</dt>
3591: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3592: <dt>U+0020 SPACE</dt>
3593: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3594:
3595: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3596: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3597: state</a>.</dd>
3598:
3599: <dt>EOF</dt>
3600: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3601: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3602: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3603:
3604: <dt>Anything else</dt>
3605: <dd>
3606:
3607: <p>If the six characters starting from the <a href="#current-input-character">current input
3608: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3609: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3610: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3611:
3612: <p>Otherwise, if the six characters starting from the
3613: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3614: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3615: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3616: keyword state</a>.</p>
1.1 mike 3617:
3618: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3619: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3620: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3621:
3622: </dd>
3623:
1.542 mike 3624: </dl><h5 id="after-doctype-public-keyword-state"><span class="secno">9.2.4.56 </span><dfn>After DOCTYPE public keyword state</dfn></h5>
1.444 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="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3634: state</a>.</dd>
3635:
3636: <dt>EOF</dt>
3637: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3638: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3639: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3640:
3641: <dt>Anything else</dt>
3642: <dd><a href="#parse-error">Parse error</a>. Reconsume the current character in
3643: the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3644:
1.542 mike 3645: </dl><h5 id="before-doctype-public-identifier-state"><span class="secno">9.2.4.57 </span><dfn>Before DOCTYPE public identifier state</dfn></h5>
1.1 mike 3646:
3647: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3648:
3649: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3650: <dt>U+000A LINE FEED (LF)</dt>
3651: <dt>U+000C FORM FEED (FF)</dt>
3652: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3653: <dt>U+0020 SPACE</dt>
3654: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3655:
3656: <dt>U+0022 QUOTATION MARK (")</dt>
3657: <dd>Set the DOCTYPE token's public identifier to the empty string
3658: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3659: (double-quoted) state</a>.</dd>
3660:
3661: <dt>U+0027 APOSTROPHE (')</dt>
3662: <dd>Set the DOCTYPE token's public identifier to the empty string
3663: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3664: (single-quoted) state</a>.</dd>
3665:
3666: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3667: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3668: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3669: token. Switch to the <a href="#data-state">data state</a>.</dd>
3670:
3671: <dt>EOF</dt>
3672: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3673: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3674: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3675:
3676: <dt>Anything else</dt>
3677: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3678: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3679: DOCTYPE state</a>.</dd>
3680:
1.542 mike 3681: </dl><h5 id="doctype-public-identifier-double-quoted-state"><span class="secno">9.2.4.58 </span><dfn>DOCTYPE public identifier (double-quoted) state</dfn></h5>
1.1 mike 3682:
3683: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3684:
3685: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3686: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3687:
3688: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3689: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3690: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3691: token. Switch to the <a href="#data-state">data state</a>.</dd>
3692:
3693: <dt>EOF</dt>
3694: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3695: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3696: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3697:
3698: <dt>Anything else</dt>
3699: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3700: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3701: identifier (double-quoted) state</a>.</dd>
3702:
1.542 mike 3703: </dl><h5 id="doctype-public-identifier-single-quoted-state"><span class="secno">9.2.4.59 </span><dfn>DOCTYPE public identifier (single-quoted) state</dfn></h5>
1.1 mike 3704:
3705: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3706:
3707: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3708: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3709:
3710: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3711: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3712: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3713: token. Switch to the <a href="#data-state">data state</a>.</dd>
3714:
3715: <dt>EOF</dt>
3716: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3717: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3718: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3719:
3720: <dt>Anything else</dt>
3721: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3722: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3723: identifier (single-quoted) state</a>.</dd>
3724:
1.542 mike 3725: </dl><h5 id="after-doctype-public-identifier-state"><span class="secno">9.2.4.60 </span><dfn>After DOCTYPE public identifier state</dfn></h5>
1.1 mike 3726:
3727: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3728:
3729: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3730: <dt>U+000A LINE FEED (LF)</dt>
3731: <dt>U+000C FORM FEED (FF)</dt>
3732: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3733: <dt>U+0020 SPACE</dt>
1.541 mike 3734: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3735: identifiers state</a>.</dd>
1.444 mike 3736:
3737: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3738: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3739: state</a>.</dd>
3740:
3741: <dt>U+0022 QUOTATION MARK (")</dt>
3742: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3743: identifier to the empty string (not missing), then switch to the
3744: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3745:
3746: <dt>U+0027 APOSTROPHE (')</dt>
3747: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3748: identifier to the empty string (not missing), then switch to the
3749: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3750:
3751: <dt>EOF</dt>
3752: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3753: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3754: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3755:
3756: <dt>Anything else</dt>
3757: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3758: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3759: DOCTYPE state</a>.</dd>
3760:
1.542 mike 3761: </dl><h5 id="between-doctype-public-and-system-identifiers-state"><span class="secno">9.2.4.61 </span><dfn>Between DOCTYPE public and system identifiers state</dfn></h5>
1.444 mike 3762:
3763: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3764:
3765: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3766: <dt>U+000A LINE FEED (LF)</dt>
3767: <dt>U+000C FORM FEED (FF)</dt>
3768: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3769: <dt>U+0020 SPACE</dt>
1.541 mike 3770: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3771: state</a>.</dd>
1.444 mike 3772:
3773: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3774: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3775: state</a>.</dd>
1.1 mike 3776:
3777: <dt>U+0022 QUOTATION MARK (")</dt>
3778: <dd>Set the DOCTYPE token's system identifier to the empty string
3779: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3780: (double-quoted) state</a>.</dd>
3781:
3782: <dt>U+0027 APOSTROPHE (')</dt>
3783: <dd>Set the DOCTYPE token's system identifier to the empty string
3784: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3785: (single-quoted) state</a>.</dd>
3786:
3787: <dt>EOF</dt>
3788: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3789: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3790: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3791:
3792: <dt>Anything else</dt>
3793: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3794: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3795: DOCTYPE state</a>.</dd>
3796:
1.542 mike 3797: </dl><h5 id="after-doctype-system-keyword-state"><span class="secno">9.2.4.62 </span><dfn>After DOCTYPE system keyword state</dfn></h5>
1.444 mike 3798:
3799: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3800:
3801: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3802: <dt>U+000A LINE FEED (LF)</dt>
3803: <dt>U+000C FORM FEED (FF)</dt>
3804: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3805: <dt>U+0020 SPACE</dt>
3806: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3807: state</a>.</dd>
3808:
3809: <dt>EOF</dt>
3810: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3811: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3812: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3813:
3814: <dt>Anything else</dt>
3815: <dd><a href="#parse-error">Parse error</a>. Reconsume the current character in
3816: the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3817:
1.542 mike 3818: </dl><h5 id="before-doctype-system-identifier-state"><span class="secno">9.2.4.63 </span><dfn>Before DOCTYPE system identifier state</dfn></h5>
1.1 mike 3819:
3820: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3821:
3822: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3823: <dt>U+000A LINE FEED (LF)</dt>
3824: <dt>U+000C FORM FEED (FF)</dt>
3825: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3826: <dt>U+0020 SPACE</dt>
3827: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3828:
3829: <dt>U+0022 QUOTATION MARK (")</dt>
3830: <dd>Set the DOCTYPE token's system identifier to the empty string
3831: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3832: (double-quoted) state</a>.</dd>
3833:
3834: <dt>U+0027 APOSTROPHE (')</dt>
3835: <dd>Set the DOCTYPE token's system identifier to the empty string
3836: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3837: (single-quoted) state</a>.</dd>
3838:
3839: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3840: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3841: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3842: token. Switch to the <a href="#data-state">data state</a>.</dd>
3843:
3844: <dt>EOF</dt>
3845: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3846: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3847: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3848:
3849: <dt>Anything else</dt>
3850: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3851: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3852: DOCTYPE state</a>.</dd>
3853:
1.542 mike 3854: </dl><h5 id="doctype-system-identifier-double-quoted-state"><span class="secno">9.2.4.64 </span><dfn>DOCTYPE system identifier (double-quoted) state</dfn></h5>
1.1 mike 3855:
3856: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3857:
3858: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 3859: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3860: state</a>.</dd>
1.1 mike 3861:
3862: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3863: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3864: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3865: token. Switch to the <a href="#data-state">data state</a>.</dd>
3866:
3867: <dt>EOF</dt>
3868: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3869: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3870: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3871:
3872: <dt>Anything else</dt>
1.541 mike 3873: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3874: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 3875: identifier (double-quoted) state</a>.</dd>
3876:
1.542 mike 3877: </dl><h5 id="doctype-system-identifier-single-quoted-state"><span class="secno">9.2.4.65 </span><dfn>DOCTYPE system identifier (single-quoted) state</dfn></h5>
1.1 mike 3878:
3879: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3880:
3881: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 3882: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3883: state</a>.</dd>
1.1 mike 3884:
3885: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3886: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3887: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3888: token. Switch to the <a href="#data-state">data state</a>.</dd>
3889:
3890: <dt>EOF</dt>
3891: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3892: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3893: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3894:
3895: <dt>Anything else</dt>
1.541 mike 3896: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3897: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 3898: identifier (single-quoted) state</a>.</dd>
3899:
1.542 mike 3900: </dl><h5 id="after-doctype-system-identifier-state"><span class="secno">9.2.4.66 </span><dfn>After DOCTYPE system identifier state</dfn></h5>
1.1 mike 3901:
3902: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3903:
3904: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3905: <dt>U+000A LINE FEED (LF)</dt>
3906: <dt>U+000C FORM FEED (FF)</dt>
3907: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3908: <dt>U+0020 SPACE</dt>
1.541 mike 3909: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3910: state</a>.</dd>
1.1 mike 3911:
3912: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3913: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3914: state</a>.</dd>
3915:
3916: <dt>EOF</dt>
3917: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3918: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3919: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3920:
3921: <dt>Anything else</dt>
3922: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
3923: state</a>. (This does <em>not</em> set the DOCTYPE token's
3924: <i>force-quirks flag</i> to <i>on</i>.)</dd>
3925:
1.542 mike 3926: </dl><h5 id="bogus-doctype-state"><span class="secno">9.2.4.67 </span><dfn>Bogus DOCTYPE state</dfn></h5>
1.1 mike 3927:
3928: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3929:
3930: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3931: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
3932: state</a>.</dd>
3933:
3934: <dt>EOF</dt>
3935: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
3936: <a href="#data-state">data state</a>.</dd>
3937:
3938: <dt>Anything else</dt>
3939: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
3940:
1.542 mike 3941: </dl><h5 id="cdata-section-state"><span class="secno">9.2.4.68 </span><dfn>CDATA section state</dfn></h5>
1.1 mike 3942:
3943: <p>Consume every character up to the next occurrence of the three
3944: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
3945: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
3946: end of the file (EOF), whichever comes first. Emit a series of
3947: character tokens consisting of all the characters consumed except
3948: the matching three character sequence at the end (if one was found
3949: before the end of the file).</p>
3950:
3951: <p>Switch to the <a href="#data-state">data state</a>.</p>
3952:
3953: <p>If the end of the file was reached, reconsume the EOF
3954: character.</p>
3955:
3956:
3957:
1.542 mike 3958: <h5 id="tokenizing-character-references"><span class="secno">9.2.4.69 </span>Tokenizing character references</h5>
1.1 mike 3959:
3960: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
3961: reference</dfn>. This definition is used when parsing character
1.299 mike 3962: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 3963: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
3964: state">in attributes</a>.</p>
3965:
3966: <p>The behavior depends on the identity of the next character (the
3967: one immediately after the U+0026 AMPERSAND character):</p>
3968:
3969: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3970: <dt>U+000A LINE FEED (LF)</dt>
3971: <dt>U+000C FORM FEED (FF)</dt>
3972: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3973: <dt>U+0020 SPACE</dt>
3974: <dt>U+003C LESS-THAN SIGN</dt>
3975: <dt>U+0026 AMPERSAND</dt>
3976: <dt>EOF</dt>
3977: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
3978:
3979: <dd>Not a character reference. No characters are consumed, and
3980: nothing is returned. (This is not an error, either.)</dd>
3981:
3982:
3983: <dt>U+0023 NUMBER SIGN (#)</dt>
3984:
3985: <dd>
3986:
3987: <p>Consume the U+0023 NUMBER SIGN.</p>
3988:
3989: <p>The behavior further depends on the character after the U+0023
3990: NUMBER SIGN:</p>
3991:
3992: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
3993: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
3994:
3995: <dd>
3996:
3997: <p>Consume the X.</p>
3998:
3999: <p>Follow the steps below, but using the range of characters
1.464 mike 4000: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
4001: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
4002: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
4003: words, 0-9, A-F, a-f).</p>
1.1 mike 4004:
4005: <p>When it comes to interpreting the number, interpret it as a
4006: hexadecimal number.</p>
4007:
4008: </dd>
4009:
4010:
4011: <dt>Anything else</dt>
4012:
4013: <dd>
4014:
4015: <p>Follow the steps below, but using the range of characters
1.464 mike 4016: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4017:
4018: <p>When it comes to interpreting the number, interpret it as a
4019: decimal number.</p>
4020:
4021: </dd>
4022:
4023: </dl><p>Consume as many characters as match the range of characters
4024: given above.</p>
4025:
4026: <p>If no characters match the range, then don't consume any
4027: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4028: appropriate, the X character). This is a <a href="#parse-error">parse
4029: error</a>; nothing is returned.</p>
4030:
4031: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4032: that too. If it isn't, there is a <a href="#parse-error">parse
4033: error</a>.</p>
4034:
4035: <p>If one or more characters match the range, then take them all
4036: and interpret the string of characters as a number (either
4037: hexadecimal or decimal as appropriate).</p>
4038:
4039: <p>If that number is one of the numbers in the first column of the
4040: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4041: row with that number in the first column, and return a character
4042: token for the Unicode character given in the second column of that
4043: row.</p>
4044:
4045: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4046: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
4047: </td></tr><tr><td>0x0D </td><td>U+000A </td><td>LINE FEED (LF)
1.464 mike 4048: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4049: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4050: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4051: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4052: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4053: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4054: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4055: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4056: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4057: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4058: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4059: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4060: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4061: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4062: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4063: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4064: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4065: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4066: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4067: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4068: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4069: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4070: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4071: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4072: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4073: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4074: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4075: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4076: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4077: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4078: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4079: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4080: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4081: surrogates not allowed; see the comment in the "preprocessing the
4082: input stream" section for details --> or is greater than 0x10FFFF,
4083: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4084: REPLACEMENT CHARACTER.</p>
1.18 mike 4085:
4086: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4087: whose code point is that number.
4088:
4089: <!-- this is the same as the equivalent list in the input stream
4090: section -->
4091: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4092: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4093: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4094: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4095: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4096: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4097: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4098: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4099: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4100: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4101: error</a>.</p>
1.1 mike 4102:
4103: </dd>
4104:
4105:
4106: <dt>Anything else</dt>
4107:
4108: <dd>
4109:
4110: <p>Consume the maximum number of characters possible, with the
4111: consumed characters matching one of the identifiers in the first
4112: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4113: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4114:
4115: <p>If no match can be made, then this is a <a href="#parse-error">parse
4116: error</a>. No characters are consumed, and nothing is
4117: returned.</p>
4118:
4119: <p>If the last character matched is not a U+003B SEMICOLON (<code title="">;</code>), there is a <a href="#parse-error">parse error</a>.</p>
4120:
4121: <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
4122: attribute</a>, and the last character matched is not a U+003B
1.464 mike 4123: SEMICOLON character (<code title="">;</code>), and the next
4124: character is in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
4125: NINE (9), U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL
4126: LETTER Z, or U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL
4127: LETTER Z, then, for historical reasons, all the characters that
4128: were matched after the U+0026 AMPERSAND character (&) must be
4129: unconsumed, and nothing is returned.</p>
1.1 mike 4130:
4131: <p>Otherwise, return a character token for the character
4132: corresponding to the character reference name (as given by the
4133: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4134: table).</p>
4135:
4136: <div class="example">
4137:
4138: <p>If the markup contains <code title="">I'm &notit; I tell
4139: you</code>, the character reference is parsed as "not", as in,
4140: <code title="">I'm ¬it; I tell you</code>. But if the markup
4141: was <code title="">I'm &notin; I tell you</code>, the
4142: character reference would be parsed as "notin;", resulting in
4143: <code title="">I'm ∉ I tell you</code>.</p>
4144:
4145: </div>
4146:
4147: </dd>
4148:
1.266 mike 4149: </dl></div><div class="impl">
4150:
1.363 mike 4151: <!-- v2: One thing that this doesn't define is handling deeply
4152: nested documents. There are compatibility requirements around that:
4153: you can't throw away the elements altogether, consider Tux made only
4154: with opening <font> elements, one per character. Seems that the best
4155: thing to do is to close some formatting elements from the middle of
4156: the stack when you hit a limit, or something. -->
4157:
1.266 mike 4158: <h4 id="tree-construction"><span class="secno">9.2.5 </span><dfn>Tree construction</dfn></h4>
1.1 mike 4159:
4160: <p>The input to the tree construction stage is a sequence of tokens
4161: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4162: stage is associated with a DOM <code>Document</code> object when a
4163: parser is created. The "output" of this stage consists of
4164: dynamically modifying or extending that document's DOM tree.</p>
4165:
4166: <p>This specification does not define when an interactive user agent
4167: has to render the <code>Document</code> so that it is available to
4168: the user, or when it has to begin accepting user input.</p>
4169:
4170: <p>As each token is emitted from the tokenizer, the user agent must
4171: process the token according to the rules given in the section
4172: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4173:
4174: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4175: character</dfn> into a node, if that node has a child immediately
4176: before where the character is to be inserted, and that child is a
4177: <code>Text</code> node, and that <code>Text</code> node was the last
4178: node that the parser inserted into the document, then the character
4179: must be appended to that <code>Text</code> node; otherwise, a new
4180: <code>Text</code> node whose data is just that character must be
4181: inserted in the appropriate place.</p>
4182:
4183: <div class="example">
4184:
4185: <p>Here are some sample inputs to the parser and the corresponding
4186: number of text nodes that they result in, assuming a user agent
4187: that executes scripts.</p>
4188:
4189: <table><thead><tr><th>Input </th><th>Number of text nodes
4190: </th></tr></thead><tbody><tr><td><pre>A<script>
4191: var script = document.getElementsByTagName('script')[0];
4192: document.body.removeChild(script);
4193: </script>B</pre>
4194: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4195: </td></tr><tr><td><pre>A<script>
4196: var text = document.createTextNode('B');
4197: document.body.appendChild(text);
4198: </script>C</pre>
4199: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4200: </td></tr><tr><td><pre>A<script>
4201: var text = document.getElementsByTagName('script')[0].firstChild;
4202: text.data = 'B';
4203: document.body.appendChild(text);
4204: </script>B</pre>
4205: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4206: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4207: </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>.)
4208: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4209: </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>.)
4210: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4211: </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.)
4212: </td></tr></tbody></table></div>
4213:
4214: <p id="mutation-during-parsing">DOM mutation events must not fire
4215: for changes caused by the UA parsing the document. (Conceptually,
4216: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4217: 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 4218:
4219: <p class="note">Not all of the tag names mentioned below are
4220: conformant tag names in this specification; many are included to
4221: handle legacy content. They still form part of the algorithm that
4222: implementations are required to implement to claim conformance.</p>
4223:
4224: <p class="note">The algorithm described below places no limit on the
4225: depth of the DOM tree generated, or on the length of tag names,
4226: attribute names, attribute values, text nodes, etc. While
4227: implementors are encouraged to avoid arbitrary limits, it is
4228: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4229: concerns</a> will likely force user agents to impose nesting depth
4230: constraints.</p>
1.1 mike 4231:
4232:
4233: <h5 id="creating-and-inserting-elements"><span class="secno">9.2.5.1 </span>Creating and inserting elements</h5>
4234:
4235: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4236: element for the token">create an element for a token</dfn> in a
4237: particular namespace, the UA must create a node implementing the
4238: interface appropriate for the element type corresponding to the tag
4239: name of the token in the given namespace (as given in the
4240: specification that defines that element, e.g. for an <code><a href="text-level-semantics.html#the-a-element">a</a></code>
4241: element in the <a href="#html-namespace-0">HTML namespace</a>, this specification
4242: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4243: the tag name being the name of that element, with the node being in
4244: the given namespace, and with the attributes on the node being those
4245: given in the given token.</p>
4246:
4247: <p>The interface appropriate for an element in the <a href="#html-namespace-0">HTML
1.426 mike 4248: namespace</a> that is not defined in this specification (or
4249: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4250: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4251: interface is not defined by that namespace's specification must use
4252: the interface <code>Element</code>.</p>
4253:
4254: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4255: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4256: invoked once the attributes are set. (This initializes the element's
4257: <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
4258: attributes.)</p>
4259:
4260: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4261: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4262: for the token</a> in the <a href="#html-namespace-0">HTML namespace</a>, and then
4263: append this node to the <a href="#current-node">current node</a>, and push it onto
4264: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4265: <a href="#current-node">current node</a>.</p>
4266:
4267: <p>The steps below may also require that the UA insert an HTML
4268: element in a particular place, in which case the UA must follow the
4269: same steps except that it must insert or append the new node in the
4270: location specified instead of appending it to the <a href="#current-node">current
4271: node</a>. (This happens in particular during the parsing of
4272: tables with invalid content.)</p>
4273:
4274: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4275: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4276: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4277: 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
4278: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4279: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4280: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4281: inserting it wherever it is to be inserted.</p>
4282:
4283: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4284: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4285: for the token</a> in the given namespace, and then append this
4286: node to the <a href="#current-node">current node</a>, and push it onto the
4287: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4288: <a href="#current-node">current node</a>. If the newly created element has an <code title="">xmlns</code> attribute in the <a href="#xmlns-namespace">XMLNS namespace</a>
4289: whose value is not exactly the same as the element's namespace, that
4290: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4291: element has an <code title="">xmlns:xlink</code> attribute in the
4292: <a href="#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="#xlink-namespace">XLink
4293: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4294:
4295: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4296: attributes</dfn> for a token, then, if the token has an attribute
4297: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4298:
4299: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4300: attributes</dfn> for a token, then, for each attribute on the token
4301: whose attribute name is one of the ones in the first column of the
4302: following table, change the attribute's name to the name given in
4303: the corresponding cell in the second column. (This fixes the case of
4304: SVG attributes that are not all lowercase.)</p>
4305:
4306: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4307: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4308: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4309: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4310: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4311: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4312: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4313: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4314: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4315: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4316: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4317: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4318: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4319: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4320: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4321: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4322: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4323: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4324: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4325: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4326: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4327: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4328: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4329: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4330: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4331: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4332: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4333: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4334: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4335: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4336: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4337: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4338: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4339: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4340: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4341: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4342: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4343: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4344: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4345: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4346: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4347: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4348: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4349: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4350: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4351: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4352: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4353: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4354: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4355: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4356: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4357: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4358: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4359: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4360: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4361: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4362: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4363: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4364: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4365: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4366: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4367: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4368: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4369: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4370: foreign attributes</dfn> for a token, then, if any of the attributes
4371: on the token match the strings given in the first column of the
4372: following table, let the attribute be a namespaced attribute, with
4373: the prefix being the string given in the corresponding cell in the
4374: second column, the local name being the string given in the
4375: corresponding cell in the third column, and the namespace being the
4376: namespace given in the corresponding cell in the fourth
4377: column. (This fixes the use of namespaced attributes, in particular
4378: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4379: the <span>XML namespace</span></a>.)</p>
4380:
4381: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
4382: </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="#xlink-namespace">XLink namespace</a>
4383: </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="#xlink-namespace">XLink namespace</a>
4384: </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="#xlink-namespace">XLink namespace</a>
4385: </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="#xlink-namespace">XLink namespace</a>
4386: </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="#xlink-namespace">XLink namespace</a>
4387: </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="#xlink-namespace">XLink namespace</a>
4388: </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="#xlink-namespace">XLink namespace</a>
4389: </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="#xml-namespace">XML namespace</a> <!-- attr-xml-base -->
4390: </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="#xml-namespace">XML namespace</a>
4391: </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="#xml-namespace">XML namespace</a>
4392: </td></tr><tr><td> <code title="">xmlns</code> </td><td> (none) </td><td> <code title="">xmlns</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a>
4393: </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="#xmlns-namespace">XMLNS namespace</a>
1.91 mike 4394: </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 4395: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4396: following steps. These algorithms are always invoked in response to
4397: a start tag token.</p>
4398:
4399: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4400:
1.91 mike 4401: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4402: text element parsing algorithm</a>, switch the tokenizer to the
4403: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4404: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4405: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4406:
4407: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4408: <a href="#insertion-mode">insertion mode</a>.</p>
4409:
1.540 mike 4410: </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 4411:
4412: </ol><h5 id="closing-elements-that-have-implied-end-tags"><span class="secno">9.2.5.2 </span>Closing elements that have implied end tags</h5>
4413:
4414: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4415: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4416: <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 4417: <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
4418: <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
4419: <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
4420: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4421: elements</a>.</p>
4422:
4423: <p>If a step requires the UA to generate implied end tags but lists
4424: an element to exclude from the process, then the UA must perform the
4425: above steps as if that element was not in the above list.</p>
4426:
4427:
4428: <h5 id="foster-parenting"><span class="secno">9.2.5.3 </span>Foster parenting</h5>
4429:
4430: <p>Foster parenting happens when content is misnested in tables.</p>
4431:
4432: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4433: parent">foster parented</dfn>, the node <var title="">node</var>
4434: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4435:
4436: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4437: 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
4438: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4439: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4440: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4441: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4442: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4443: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4444: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4445: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4446: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4447: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4448: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4449: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4450:
4451: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4452: 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
4453: elements</a>, then <var title="">node</var> must be inserted
4454: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4455: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4456: element</a></i>; otherwise, <var title="">node</var> must be
4457: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4458:
4459:
4460:
4461: <h5 id="the-initial-insertion-mode"><span class="secno">9.2.5.4 </span>The "<dfn title="insertion mode: initial">initial</dfn>" insertion mode</h5>
4462:
4463: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4464: mode: initial">initial</a>", tokens must be handled as follows:</p>
4465:
4466: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4467: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4468: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4469: <dd>
4470: <p>Ignore the token.</p>
4471: </dd>
4472:
4473: <dt>A comment token</dt>
4474: <dd>
4475: <p>Append a <code>Comment</code> node to the <code>Document</code>
4476: object with the <code title="">data</code> attribute set to the
4477: data given in the comment token.</p>
4478: </dd>
4479:
4480: <dt>A DOCTYPE token</dt>
4481: <dd>
4482:
4483: <p>If the DOCTYPE token's name is not a
4484: <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
4485: missing, or the token's system identifier is neither missing nor a
4486: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4487: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4488: conditions in the following list are matched, then there is a
4489: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4490: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4491: permitted DOCTYPE</dfn>.</p>
4492:
4493: <ul><!-- only things that trigger no-quirks mode and were valid in
4494: some other spec are allowed in this list --><li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4495: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4496: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and the
4497: token's system identifier is either missing or the
4498: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4499:
4500: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4501: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4502: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and the
4503: token's system identifier is either missing or the
4504: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4505:
4506: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4507: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4508: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
4509: and the token's system identifier is the
4510: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4511:
4512: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4513: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4514: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and the
4515: token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4516: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4517:
4518: </ul><p>Conformance checkers may, based on the values (including
4519: presence or lack thereof) of the DOCTYPE token's name, public
4520: identifier, or system identifier, switch to a conformance checking
4521: mode for another language (e.g. based on the DOCTYPE token a
4522: conformance checker could recognize that the document is an
1.183 mike 4523: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4524: checker.)</p>
4525:
4526: <p>Append a <code>DocumentType</code> node to the
4527: <code>Document</code> node, with the <code title="">name</code>
4528: attribute set to the name given in the DOCTYPE token, or the empty
4529: string if the name was missing; the <code title="">publicId</code>
4530: attribute set to the public identifier given in the DOCTYPE token,
4531: or the empty string if the public identifier was missing; the
4532: <code title="">systemId</code> attribute set to the system
4533: identifier given in the DOCTYPE token, or the empty string if the
4534: system identifier was missing; and the other attributes specific
4535: to <code>DocumentType</code> objects set to null and empty lists
4536: as appropriate. Associate the <code>DocumentType</code> node with
4537: the <code>Document</code> object so that it is returned as the
4538: value of the <code title="">doctype</code> attribute of the
4539: <code>Document</code> object.</p>
4540:
4541: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4542: one of the conditions in the following list, then set the
4543: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4544:
4545: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
4546: <li> The name is set to anything other than "<code title="">HTML</code>". </li>
4547: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4548: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4549: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4550: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4551: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4552: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4553: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4554: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4555: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4556: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4557: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4558: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4559: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4560: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4561: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4562: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4563: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4564: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4565: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4566: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4567: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4568: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4569: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4570: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4571: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4572: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4573: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4574: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4575: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4576: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4577: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4578: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4579: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4580: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4581: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4582: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4583: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4584: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4585: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4586: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4587: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4588: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4589: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4590: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4591: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4592: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4593: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4594: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4595: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4596: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4597: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4598: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4599: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4600: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4601: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4602: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4603: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4604: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4605: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4606: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4607: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4608: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4609: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4610: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4611: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4612: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4613: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4614: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4615: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4616: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4617: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4618: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4619: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4620: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4621: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4622: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4623: in the following list, then set the <code>Document</code> to
4624: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4625:
4626: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4627: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4628: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4629: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4630: </ul><p>The name, system identifier, and public identifier strings must
4631: be compared to the values given in the lists above in an
4632: <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> manner. A system identifier
4633: whose value is the empty string is not considered missing for the
4634: purposes of the conditions above.</p>
4635:
4636: <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>
4637:
4638: </dd>
4639:
4640: <dt>Anything else</dt>
4641: <dd>
4642:
4643: <p><a href="#parse-error">Parse error</a>.</p>
4644:
4645: <p>Set the <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
4646:
4647: <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
4648: reprocess the current token.</p>
4649:
4650: </dd>
4651:
4652: </dl><h5 id="the-before-html-insertion-mode"><span class="secno">9.2.5.5 </span>The "<dfn title="insertion mode: before html">before html</dfn>" insertion mode</h5>
4653:
4654: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4655: mode: before html">before html</a>", tokens must be handled as follows:</p>
4656:
4657: <dl class="switch"><dt>A DOCTYPE token</dt>
4658: <dd>
4659: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4660: </dd>
4661:
4662: <dt>A comment token</dt>
4663: <dd>
4664: <p>Append a <code>Comment</code> node to the <code>Document</code>
4665: object with the <code title="">data</code> attribute set to the
4666: data given in the comment token.</p>
4667: </dd>
4668:
4669: <dt>A character token that is one of U+0009 CHARACTER
4670: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4671: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4672: <dd>
4673: <p>Ignore the token.</p>
4674: </dd>
4675:
4676: <dt>A start tag whose tag name is "html"</dt>
4677: <dd>
4678:
4679: <p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the <a href="#html-namespace-0">HTML
4680: namespace</a>. Append it to the <code>Document</code>
4681: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4682: elements</a>.</p>
4683:
4684: <p id="parser-appcache">If the <code>Document</code> is being
4685: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4686: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4687: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4688: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4689: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4690: 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 4691: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4692: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4693: removed; otherwise, if there is no such attribute or resolving it
4694: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4695: cache selection algorithm</a> with no manifest. The algorithm
4696: must be passed the <code>Document</code> object.</p>
1.1 mike 4697:
4698: <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>
4699:
4700: </dd>
4701:
1.334 mike 4702: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4703: <dd>
4704: <p>Act as described in the "anything else" entry below.</p>
4705: </dd>
4706:
4707: <dt>Any other end tag</dt>
4708: <dd>
4709: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4710: </dd>
4711:
1.1 mike 4712: <dt>Anything else</dt>
4713: <dd>
4714:
1.159 mike 4715: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4716: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4717: of open elements</a>.</p>
4718:
4719: <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
4720: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4721: algorithm</a> with no manifest, passing it the
4722: <code>Document</code> object.</p>
4723:
4724: <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
4725: reprocess the current token.</p>
4726:
4727: </dd>
4728:
4729: </dl><p>The root element can end up being removed from the
4730: <code>Document</code> object, e.g. by scripts; nothing in particular
4731: happens in such cases, content continues being appended to the nodes
4732: as described in the next section.</p>
4733:
4734:
4735: <h5 id="the-before-head-insertion-mode"><span class="secno">9.2.5.6 </span>The "<dfn title="insertion mode: before head">before head</dfn>" insertion mode</h5>
4736:
4737: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4738: mode: before head">before head</a>", tokens must be handled as follows:</p>
4739:
4740: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4741: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4742: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4743: <dd>
4744: <p>Ignore the token.</p> <!-- :-( -->
4745: </dd>
4746:
4747: <dt>A comment token</dt>
4748: <dd>
4749: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4750: node</a> with the <code title="">data</code> attribute set to
4751: the data given in the comment token.</p>
4752: </dd>
4753:
4754: <dt>A DOCTYPE token</dt>
4755: <dd>
4756: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4757: </dd>
4758:
4759: <dt>A start tag whose tag name is "html"</dt>
4760: <dd>
4761: <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
4762: mode</a>.</p>
4763: </dd>
4764:
4765: <dt>A start tag whose tag name is "head"</dt>
4766: <dd>
4767:
4768: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4769:
4770: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4771: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4772:
4773: <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>
4774:
4775: </dd>
4776:
4777: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4778: <dd>
4779:
4780: <p>Act as if a start tag token with the tag name "head" and no
4781: attributes had been seen, then reprocess the current token.</p>
4782:
4783: </dd>
4784:
4785: <dt>Any other end tag</dt>
4786: <dd>
4787:
4788: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4789:
4790: </dd>
4791:
4792: <dt>Anything else</dt>
4793: <dd>
4794:
4795: <p>Act as if a start tag token with the tag name "head" and no
4796: attributes had been seen, then reprocess the current
4797: token.</p>
4798:
4799: </dd>
4800:
4801: </dl><h5 id="parsing-main-inhead"><span class="secno">9.2.5.7 </span>The "<dfn title="insertion mode: in head">in head</dfn>" insertion mode</h5>
4802:
4803: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4804: mode: in head">in head</a>", tokens must be handled as follows:</p>
4805:
4806: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4807: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4808: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4809: <dd>
4810: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4811: the <a href="#current-node">current node</a>.</p>
4812: </dd>
4813:
4814: <dt>A comment token</dt>
4815: <dd>
4816: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4817: node</a> with the <code title="">data</code> attribute set to
4818: the data given in the comment token.</p>
4819: </dd>
4820:
4821: <dt>A DOCTYPE token</dt>
4822: <dd>
4823: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4824: </dd>
4825:
4826: <dt>A start tag whose tag name is "html"</dt>
4827: <dd>
4828: <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
4829: mode</a>.</p>
4830: </dd>
4831:
4832: <dt>A start tag whose tag name is one of: "base", "command",
4833: "link"</dt>
4834: <dd>
4835:
4836: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4837: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4838: elements</a>.</p>
4839:
4840: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4841: token's <i>self-closing flag</i></a>, if it is set.</p>
4842:
4843: </dd>
4844:
4845: <dt>A start tag whose tag name is "meta"</dt>
4846: <dd>
4847:
4848: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4849: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4850: elements</a>.</p>
4851:
4852: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4853: token's <i>self-closing flag</i></a>, if it is set.</p>
4854:
4855: <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
4856: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4857: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4858: encoding</a> to the encoding given by the value of the
4859: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4860:
4861: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4862: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4863: Content-Type</a> to its value returns a supported encoding
4864: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4865: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4866: encoding</a> to the encoding <var title="">encoding</var>.</p>
4867:
4868: </dd>
4869:
4870: <dt>A start tag whose tag name is "title"</dt>
4871: <dd>
4872: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
4873: </dd>
4874:
4875: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
4876: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
4877: <dd>
1.91 mike 4878: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 4879: </dd>
4880:
4881: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
4882: <dd>
4883:
4884: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4885:
4886: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
4887: noscript</a>".</p>
4888:
4889: </dd>
4890:
4891: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
4892: <dd>
4893:
4894: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
4895: <a href="#html-namespace-0">HTML namespace</a>.</p></li>
4896:
4897: <li>
4898:
4899: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
4900:
4901: <p class="note">This ensures that, if the script is external,
1.159 mike 4902: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 4903: calls in the script will execute in-line, instead of blowing the
4904: document away, as would happen in most other cases. It also
4905: prevents the script from executing until the end tag is
4906: seen.</p>
4907:
4908: </li>
4909:
4910: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
4911: fragment parsing algorithm</a>, then mark the
1.484 mike 4912: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
4913: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 4914:
4915: <li><p>Append the new element to the <a href="#current-node">current node</a>
4916: and push it onto the <a href="#stack-of-open-elements">stack of open
4917: elements</a>.</p></li>
4918:
1.541 mike 4919: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
4920: state</a>.</p></li>
1.1 mike 4921:
4922: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4923: <a href="#insertion-mode">insertion mode</a>.</p>
4924:
1.540 mike 4925: </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 4926:
4927: </ol></dd>
4928:
4929: <dt>An end tag whose tag name is "head"</dt>
4930: <dd>
4931:
4932: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 4933: <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 4934: elements</a>.</p>
4935:
4936: <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>
4937:
4938: </dd>
4939:
4940: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
4941: <dd>
4942: <p>Act as described in the "anything else" entry below.</p>
4943: </dd>
4944:
4945: <dt>A start tag whose tag name is "head"</dt>
4946: <dt>Any other end tag</dt>
4947: <dd>
4948: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4949: </dd>
4950:
4951: <dt>Anything else</dt>
4952: <dd>
4953:
4954: <!-- can't get here with an EOF and a fragment case -->
4955:
4956: <p>Act as if an end tag token with the tag name "head" had
4957: been seen, and reprocess the current token.</p>
4958:
4959: </dd>
4960:
4961: </dl><h5 id="parsing-main-inheadnoscript"><span class="secno">9.2.5.8 </span>The "<dfn title="insertion mode: in head noscript">in head noscript</dfn>" insertion mode</h5>
4962:
4963: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
4964: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
4965:
4966: <dl class="switch"><dt>A DOCTYPE token</dt>
4967: <dd>
4968: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4969: </dd>
4970:
4971: <dt>A start tag whose tag name is "html"</dt>
4972: <dd>
4973: <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
4974: mode</a>.</p>
4975: </dd>
4976:
4977: <dt>An end tag whose tag name is "noscript"</dt>
4978: <dd>
4979:
4980: <p>Pop the <a href="#current-node">current node</a> (which will be a
4981: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
4982: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 4983: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4984:
4985: <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>
4986:
4987: </dd>
4988:
4989: <dt>A character token that is one of U+0009 CHARACTER
4990: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4991: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4992: <dt>A comment token</dt>
4993: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
4994: <dd>
4995: <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
4996: mode</a>.</p>
4997: </dd>
4998:
4999: <dt>An end tag whose tag name is "br"</dt>
5000: <dd>
5001: <p>Act as described in the "anything else" entry below.</p>
5002: </dd>
5003:
5004: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5005: <dt>Any other end tag</dt>
5006: <dd>
5007: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5008: </dd>
5009:
5010: <dt>Anything else</dt>
5011: <dd>
5012:
5013: <!-- can't get here with an EOF and a fragment case -->
5014:
5015: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5016: name "noscript" had been seen and reprocess the current
5017: token.</p>
5018:
5019: </dd>
5020:
5021: </dl><h5 id="the-after-head-insertion-mode"><span class="secno">9.2.5.9 </span>The "<dfn title="insertion mode: after head">after head</dfn>" insertion mode</h5>
5022:
5023: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5024: mode: after head">after head</a>", tokens must be handled as follows:</p>
5025:
5026: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5027: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5028: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5029: <dd>
5030: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5031: the <a href="#current-node">current node</a>.</p>
5032: </dd>
5033:
5034: <dt>A comment token</dt>
5035: <dd>
5036: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5037: node</a> with the <code title="">data</code> attribute set to
5038: the data given in the comment token.</p>
5039: </dd>
5040:
5041: <dt>A DOCTYPE token</dt>
5042: <dd>
5043: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5044: </dd>
5045:
5046: <dt>A start tag whose tag name is "html"</dt>
5047: <dd>
5048: <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
5049: mode</a>.</p>
5050: </dd>
5051:
5052: <dt>A start tag whose tag name is "body"</dt>
5053: <dd>
5054:
5055: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5056:
5057: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5058:
5059: <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>
5060:
5061: </dd>
5062:
5063: <dt>A start tag whose tag name is "frameset"</dt>
5064: <dd>
5065:
5066: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5067:
5068: <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>
5069:
5070: </dd>
5071:
5072: <dt>A start tag token whose tag name is one of: "base", "link",
5073: "meta", "noframes", "script", "style", "title"</dt>
5074: <dd>
5075:
5076: <p><a href="#parse-error">Parse error</a>.</p>
5077:
5078: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5079: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5080:
5081: <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
5082: mode</a>.</p>
5083:
5084: <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
5085: of open elements</a>.</p>
5086:
5087: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5088: pointer</a> cannot be null at this point.</p>
5089:
5090: </dd>
5091:
5092: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5093: <dd>
5094: <p>Act as described in the "anything else" entry below.</p>
5095: </dd>
5096:
5097: <dt>A start tag whose tag name is "head"</dt>
5098: <dt>Any other end tag</dt>
5099: <dd>
5100: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5101: </dd>
5102:
5103: <dt>Anything else</dt>
5104: <dd>
5105: <p>Act as if a start tag token with the tag name "body" and no
5106: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5107: flag</a> back to "ok", and then reprocess the current
5108: token.</p>
5109: </dd>
5110:
5111: </dl><h5 id="parsing-main-inbody"><span class="secno">9.2.5.10 </span>The "<dfn title="insertion mode: in body">in body</dfn>" insertion mode</h5>
5112:
5113: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5114: mode: in body">in body</a>", tokens must be handled as follows:</p>
5115:
5116: <dl class="switch"><dt>A character token</dt>
5117: <dd>
5118:
5119: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5120: any.</p>
5121:
5122: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5123: character</a> into the <a href="#current-node">current node</a>.</p>
5124:
5125: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5126: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5127: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5128: flag</a> to "not ok".</p>
5129:
5130: </dd>
5131:
5132: <dt>A comment token</dt>
5133: <dd>
5134: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5135: node</a> with the <code title="">data</code> attribute set to
5136: the data given in the comment token.</p>
5137: </dd>
5138:
5139: <dt>A DOCTYPE token</dt>
5140: <dd>
5141: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5142: </dd>
5143:
5144: <dt>A start tag whose tag name is "html"</dt>
5145: <dd>
5146: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5147: check to see if the attribute is already present on the top
5148: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5149: add the attribute and its corresponding value to that element.</p>
5150: </dd>
5151:
5152: <dt>A start tag token whose tag name is one of: "base", "command",
5153: "link", "meta", "noframes", "script", "style", "title"</dt>
5154: <dd>
5155: <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
5156: mode</a>.</p>
5157: </dd>
5158:
5159: <dt>A start tag whose tag name is "body"</dt>
5160: <dd>
5161:
5162: <p><a href="#parse-error">Parse error</a>.</p>
5163:
5164: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5165: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5166: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5167: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5168:
5169: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5170: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5171: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5172: elements</a>. If it is not, add the attribute and its
5173: corresponding value to that element.</p>
5174:
5175: </dd>
5176:
5177: <dt>A start tag whose tag name is "frameset"</dt>
5178: <dd>
5179:
5180: <p><a href="#parse-error">Parse error</a>.</p>
5181:
5182: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5183: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5184: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5185: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5186:
5187: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5188: the token.</p>
5189:
5190: <p>Otherwise, run the following steps:</p>
5191:
5192: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5193: elements</a> from its parent node, if it has one.</p></li>
5194:
5195: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5196: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5197: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5198:
5199: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5200: token.</p></li>
5201:
5202: <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>
5203:
5204: </li></ol></dd>
5205:
5206: <dt>An end-of-file token</dt>
5207: <dd>
5208:
5209: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5210: 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>
5211: 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 5212: <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
5213: <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
5214: <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 5215: <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 5216: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5217: fragment cases) -->
1.1 mike 5218:
5219: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5220:
5221: </dd>
5222:
5223: <dt>An end tag whose tag name is "body"</dt>
5224: <dd>
5225:
5226: <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
5227: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5228: token.</p>
5229:
5230: <!-- if we get here, the insertion mode here is forcibly "in
5231: body". -->
5232:
5233: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5234: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5235: <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
5236: <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
5237: <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
5238: <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
5239: <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
5240: <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 5241: <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
5242: <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 5243: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5244: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5245: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5246:
5247: <!-- If we ever change the frameset-ok flag to an insertion mode,
5248: then we'd have to somehow keep track of its state when we switch
5249: to after-body. -->
5250:
5251: <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>
5252:
5253: </dd>
5254:
5255: <dt>An end tag whose tag name is "html"</dt>
5256: <dd>
5257:
5258: <p>Act as if an end tag with tag name "body" had been seen,
5259: then, if that token wasn't ignored, reprocess the current
5260: token.</p>
5261:
5262: <p class="note">The fake end tag token here can only be
5263: ignored in the <a href="#fragment-case">fragment case</a>.</p>
5264:
5265: </dd>
5266:
5267: <!-- start tags for non-phrasing flow content elements -->
5268:
5269: <!-- the normal ones -->
5270: <dt>A start tag whose tag name is one of: "address", "article",
1.86 mike 5271: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5272: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5273: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5274: <dd>
5275:
5276: <!-- As of May 2008 this doesn't match any browser exactly, but is
5277: as close to what IE does as I can get without doing the non-tree
5278: DOM nonsense, and thus should actually afford better compatibility
5279: when implemented by the other browsers. -->
5280:
5281: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5282: an element in scope">has a <code>p</code> element in
5283: scope</a>, then act as if an end tag with the tag name
5284: "p" had been seen.</p>
5285:
5286: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5287:
5288: </dd>
5289:
5290: <!-- as normal, but close h1-h6 if it's the current node -->
5291: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5292: "h5", "h6"</dt>
5293: <dd>
5294:
5295: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5296: an element in scope">has a <code>p</code> element in
5297: scope</a>, then act as if an end tag with the tag name
5298: "p" had been seen.</p>
5299:
5300: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5301: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5302: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5303: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5304: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5305:
5306: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5307:
5308: </dd>
5309:
5310: <!-- as normal, but drops leading newline -->
5311: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5312: <dd>
5313:
5314: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5315: an element in scope">has a <code>p</code> element in
5316: scope</a>, then act as if an end tag with the tag name
5317: "p" had been seen.</p>
5318:
5319: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5320:
5321: <p>If the next token is a U+000A LINE FEED (LF) character
5322: token, then ignore that token and move on to the next
5323: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5324: ignored as an authoring convenience.)</p>
5325:
5326: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5327:
5328: </dd>
5329:
5330: <!-- as normal, but interacts with the form element pointer -->
5331: <dt>A start tag whose tag name is "form"</dt>
5332: <dd>
5333:
5334: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5335: pointer</a> is not null, then this is a <a href="#parse-error">parse
5336: error</a>; ignore the token.</p>
5337:
5338: <p>Otherwise:</p>
5339:
5340: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5341: an element in scope">has a <code>p</code> element in
5342: scope</a>, then act as if an end tag with the tag name
5343: "p" had been seen.</p>
5344:
5345: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5346: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5347: point to the element created.</p>
5348:
5349: </dd>
5350:
5351: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5352: <dt>A start tag whose tag name is "li"</dt>
5353: <dd>
5354:
5355: <p>Run the following algorithm:</p>
5356:
5357: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5358:
5359: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5360: node</a> (the bottommost node of the stack).</p></li>
5361:
1.578 mike 5362: <li><p><i>Loop</i>: If <var title="">node</var> is an
5363: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5364: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5365:
1.578 mike 5366: <li><p>If <var title="">node</var> is not in the
1.1 mike 5367: <a href="#formatting">formatting</a> category, and is not in the
5368: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5369: <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 5370: element, then jump to the last step.</p></li> <!-- an element
5371: <foo> is in this list if the following markup:
5372:
5373: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5374:
5375: ...results in the second <li> not being (in any way) a descendant
5376: of the first <li>, or if <foo> is a formatting element that gets
5377: reopened later. -->
5378:
5379: <li><p>Otherwise, set <var title="">node</var> to the previous
5380: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5381: the step labeled <i>loop</i>.</p></li>
5382:
5383: <li>
5384:
5385: <p>This is the last step.</p>
5386:
5387: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5388: an element in scope">has a <code>p</code> element in
5389: scope</a>, then act as if an end tag with the tag name
5390: "p" had been seen.</p>
5391:
5392: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5393: token.</p>
5394:
5395: </li>
5396:
5397: </ol></dd>
5398:
5399: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5400: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5401: <dd>
5402:
5403: <p>Run the following algorithm:</p>
5404:
5405: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5406:
5407: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5408: node</a> (the bottommost node of the stack).</p></li>
5409:
5410: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5411: <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
5412: tag with the same tag name as <var title="">node</var> had been
5413: seen, then jump to the last step.</p></li>
1.1 mike 5414:
5415: <li><p>If <var title="">node</var> is not in the
5416: <a href="#formatting">formatting</a> category, and is not in the
5417: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5418: <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 5419: element, then jump to the last step.</p></li> <!-- an element
5420: <foo> is in this list if the following markup:
5421:
5422: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5423:
5424: ...results in the second <dt> not being (in any way) a descendant
5425: of the first <dt>, or if <foo> is a formatting element that gets
5426: reopened later. -->
5427:
5428: <li><p>Otherwise, set <var title="">node</var> to the previous
5429: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5430: the step labeled <i>loop</i>.</p></li>
5431:
5432: <li>
5433:
5434: <p>This is the last step.</p>
5435:
5436: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5437: an element in scope">has a <code>p</code> element in
5438: scope</a>, then act as if an end tag with the tag name
5439: "p" had been seen.</p>
5440:
5441: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5442: token.</p>
5443:
5444: </li>
5445:
5446: </ol></dd>
5447:
5448: <!-- same as normal, but effectively ends parsing -->
5449: <dt>A start tag whose tag name is "plaintext"</dt>
5450: <dd>
5451:
5452: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5453: an element in scope">has a <code>p</code> element in
5454: scope</a>, then act as if an end tag with the tag name
5455: "p" had been seen.</p>
5456:
5457: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5458:
1.541 mike 5459: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5460:
1.541 mike 5461: <p class="note">Once a start tag with the tag name "plaintext" has
5462: been seen, that will be the last token ever seen other than
5463: character tokens (and the end-of-file token), because there is no
5464: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5465:
5466: </dd>
5467:
5468: <!-- end tags for non-phrasing flow content elements -->
5469:
5470: <!-- the normal ones -->
5471: <dt>An end tag whose tag name is one of: "address", "article",
1.86 mike 5472: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5473: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5474: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5475: "section", "ul"</dt>
1.1 mike 5476: <dd>
5477:
5478: <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>
5479: with the same tag name as that of the token, then this is a
5480: <a href="#parse-error">parse error</a>; ignore the token.</p>
5481:
5482: <p>Otherwise, run these steps:</p>
5483:
5484: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5485:
5486: <li><p>If the <a href="#current-node">current node</a> is not an element with
5487: the same tag name as that of the token, then this is a
5488: <a href="#parse-error">parse error</a>.</p></li>
5489:
5490: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5491: until an element with the same tag name as the token has been
5492: popped from the stack.</p></li>
5493:
5494: </ol></dd>
5495:
5496: <!-- removes the form element pointer instead of the matching node -->
5497: <dt>An end tag whose tag name is "form"</dt>
5498: <dd>
5499:
5500: <p>Let <var title="">node</var> be the element that the
5501: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5502: to.</p>
5503:
5504: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5505: to null.</p>
5506:
5507: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5508: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5509: scope">have <var title="">node</var> in scope</a>, then this is
5510: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5511:
5512: <p>Otherwise, run these steps:</p>
5513:
5514: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5515:
5516: <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
5517: error</a>.</p></li>
5518:
5519: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5520: open elements</a>.</p></li>
5521:
5522: </ol></dd>
5523:
5524: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5525: <dt>An end tag whose tag name is "p"</dt>
5526: <dd>
5527:
5528: <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>
5529: with the same tag name as that of the token, then this is a
5530: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5531: "p" had been seen, then reprocess the current token.</p>
5532:
5533: <p>Otherwise, run these steps:</p>
5534:
5535: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5536: for elements with the same tag name as the token.</p></li>
5537:
5538: <li><p>If the <a href="#current-node">current node</a> is not an element with
5539: the same tag name as that of the token, then this is a
5540: <a href="#parse-error">parse error</a>.</p></li>
5541:
5542: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5543: until an element with the same tag name as the token has been
5544: popped from the stack.</p></li>
5545:
5546: </ol></dd>
5547:
1.234 mike 5548: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5549: <dt>An end tag whose tag name is "li"</dt>
5550: <dd>
5551:
5552: <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
5553: item scope</a> with the same tag name as that of the token,
5554: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5555:
5556: <p>Otherwise, run these steps:</p>
5557:
5558: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5559: for elements with the same tag name as the token.</p></li>
5560:
5561: <li><p>If the <a href="#current-node">current node</a> is not an element with
5562: the same tag name as that of the token, then this is a
5563: <a href="#parse-error">parse error</a>.</p></li>
5564:
5565: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5566: until an element with the same tag name as the token has been
5567: popped from the stack.</p></li>
5568:
5569: </ol></dd>
5570:
1.1 mike 5571: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5572: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5573: <dd>
5574:
5575: <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>
5576: with the same tag name as that of the token, then this is a
5577: <a href="#parse-error">parse error</a>; ignore the token.</p>
5578:
5579: <p>Otherwise, run these steps:</p>
5580:
5581: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5582: for elements with the same tag name as the token.</p></li>
5583:
5584: <li><p>If the <a href="#current-node">current node</a> is not an element with
5585: the same tag name as that of the token, then this is a
5586: <a href="#parse-error">parse error</a>.</p></li>
5587:
5588: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5589: until an element with the same tag name as the token has been
5590: popped from the stack.</p></li>
5591:
5592: </ol></dd>
5593:
5594: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5595: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5596: <dd>
5597:
5598: <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>
5599: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5600: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5601:
5602: <p>Otherwise, run these steps:</p>
5603:
5604: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5605:
5606: <li><p>If the <a href="#current-node">current node</a> is not an element with
5607: the same tag name as that of the token, then this is a
5608: <a href="#parse-error">parse error</a>.</p></li>
5609:
5610: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5611: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5612: "h5", or "h6" has been popped from the stack.</p></li>
5613:
5614: </ol></dd>
5615:
5616: <dt>An end tag whose tag name is "sarcasm"</dt>
5617: <dd>
5618: <p>Take a deep breath, then act as described in the "any other end
5619: tag" entry below.</p>
5620: </dd>
5621:
5622: <!-- ADOPTION AGENCY ELEMENTS
5623: Mozilla-only: bdo blink del ins sub sup q
5624: Safari-only: code dfn kbd nobr samp var wbr
5625: Both: a b big em font i s small strike strong tt u -->
5626:
5627: <dt>A start tag whose tag name is "a"</dt>
5628: <dd>
5629:
5630: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5631: contains an element whose tag name is "a" between the end of
5632: the list and the last marker on the list (or the start of the
5633: list if there is no marker on the list), then this is a
5634: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5635: name "a" had been seen, then remove that element from the
5636: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5637: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5638: already remove it (it might not have if the element is not
5639: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5640: scope</a>).</p>
5641:
5642: <p class="example">In the non-conforming stream
5643: <code><a href="a">a<table><a href="b">b</table>x</code>,
5644: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5645: the second one, and the "x" character would be inside a link
5646: to "b", not to "a". This is despite the fact that the outer
5647: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5648: regular <code></a></code> end tag at the start of the table
5649: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5650:
5651: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5652: any.</p>
5653:
5654: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5655: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5656: elements</a>.</p>
5657:
5658: </dd>
5659:
5660: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5661: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5662: <dd>
5663:
5664: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5665: any.</p>
5666:
5667: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5668: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5669: elements</a>.</p>
5670:
5671: </dd>
5672:
5673: <dt>A start tag whose tag name is "nobr"</dt>
5674: <dd>
5675:
5676: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5677: any.</p>
5678:
5679: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5680: element in scope">has a <code>nobr</code> element in scope</a>,
5681: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5682: the tag name "nobr" had been seen, then once again
5683: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5684: any.</p>
5685:
5686: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5687: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5688: elements</a>.</p>
5689:
5690: </dd>
5691:
5692: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5693: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5694: "strike", "strong", "tt", "u"</dt>
5695: <dd>
5696:
5697: <p>Follow these steps:</p>
5698:
5699: <ol><li>
5700:
5701: <p>Let the <var title="">formatting element</var> be the
5702: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5703: elements</a> that:</p>
5704:
5705: <ul><li>is between the end of the list and the last scope
5706: marker in the list, if any, or the start of the list
5707: otherwise, and</li>
5708:
5709: <li>has the same tag name as the token.</li>
5710:
5711: </ul><p>If there is no such node, or, if that node is also in the
5712: <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
5713: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5714: steps.</p>
5715:
5716: <p>Otherwise, if there is such a node, but that node is not
5717: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5718: <a href="#parse-error">parse error</a>; remove the element from the list,
5719: and abort these steps.</p>
5720:
5721: <p>Otherwise, there is a <var title="">formatting
5722: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5723: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5724: element in scope">in scope</a>. If the element is not the
5725: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5726: error</a>. In any case, proceed with the algorithm as
5727: written in the following steps.</p>
5728:
5729: </li>
5730:
5731: <li><p>Let the <var title="">furthest block</var> be the
5732: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5733: is lower in the stack than the <var title="">formatting
5734: element</var>, and is not an element in the
5735: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5736: categories. There might not be one.</p></li>
5737:
5738: <li><p>If there is no <var title="">furthest block</var>,
5739: then the UA must skip the subsequent steps and instead just
5740: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5741: elements</a>, from the <a href="#current-node">current node</a> up to and
5742: including the <var title="">formatting element</var>, and
5743: remove the <var title="">formatting element</var> from the
5744: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5745:
5746: <li><p>Let the <var title="">common ancestor</var> be the element
5747: immediately above the <var title="">formatting element</var> in the
5748: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5749:
5750: <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
5751: formatting elements</a> relative to the elements on either
5752: side of it in the list.</p></li>
5753:
5754: <li>
5755:
5756: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5757: <var title="">furthest block</var>. Follow these steps:</p>
5758:
5759: <ol><li>Let <var title="">node</var> be the element immediately
5760: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5761: elements</a>, or if <var title="">node</var> is no longer in
5762: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5763: removed by the next step), the element that was immediately
5764: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5765: elements</a> before <var title="">node</var> was
5766: removed.</li>
1.1 mike 5767:
5768: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5769: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5770: elements</a> and then go back to step 1.</li>
5771:
5772: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5773: in the overall algorithm.</li>
5774:
5775: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5776: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5777: elements</a>.</li>
5778:
5779: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5780: element <var title="">node</var> was created, replace the entry
5781: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5782: formatting elements</a> with an entry for the new element,
5783: replace the entry for <var title="">node</var> in the
5784: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5785: element, and let <var title="">node</var> be the new
5786: element.</li>
5787:
5788: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5789: parent node if any.</li>
5790:
5791: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5792:
5793: <li>Return to step 1 of this inner set of steps.</li>
5794:
5795: </ol></li>
5796:
5797: <li>
5798:
5799: <p>If the <var title="">common ancestor</var> node is a
5800: <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>,
5801: <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,
5802: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5803: node</var> ended up being in the previous step, first removing
5804: it from its previous parent node if any.</p>
5805:
5806: <p>Otherwise, append whatever <var title="">last node</var>
5807: ended up being in the previous step to the <var title="">common
5808: ancestor</var> node, first removing it from its previous parent
5809: node if any.</p>
5810:
5811: </li>
5812:
5813: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5814: <var title="">formatting element</var> was created.</p></li>
5815:
5816: <li><p>Take all of the child nodes of the <var title="">furthest
5817: block</var> and append them to the element created in the last
5818: step.</p></li>
5819:
5820: <li><p>Append that new element to the <var title="">furthest
5821: block</var>.</p></li>
5822:
5823: <li><p>Remove the <var title="">formatting element</var> from the
5824: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5825: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5826: elements</a> at the position of the aforementioned
5827: bookmark.</p></li>
5828:
5829: <li><p>Remove the <var title="">formatting element</var> from the
5830: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5831: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5832: the position of the <var title="">furthest block</var> in that
5833: stack.</p></li>
5834:
5835: <li><p>Jump back to step 1 in this series of steps.</p></li>
5836:
1.334 mike 5837: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5838: to change parents, it has been dubbed the "adoption agency
5839: algorithm" (in contrast with other possible algorithms for dealing
5840: with misnested content, which included the "incest algorithm", the
1.1 mike 5841: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5842:
5843: </dd>
5844:
5845: <dt>A start tag whose tag name is "button"</dt>
5846: <dd>
5847:
5848: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5849: an element in scope">has a <code>button</code> element in
5850: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5851: act as if an end tag with the tag name "button" had been seen,
5852: then reprocess the token.</p>
5853:
5854: <p>Otherwise:</p>
5855:
5856: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5857: any.</p>
5858:
5859: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5860:
5861: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5862: formatting elements</a>.</p>
5863:
5864: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5865:
5866: </dd>
5867:
5868: <dt>A start tag token whose tag name is one of: "applet",
5869: "marquee", "object"</dt>
5870: <dd>
5871:
5872: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5873: any.</p>
5874:
5875: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5876:
5877: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5878: formatting elements</a>.</p>
5879:
5880: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5881:
5882: </dd>
5883:
5884: <dt>An end tag token whose tag name is one of: "applet", "button",
5885: "marquee", "object"</dt>
5886: <dd>
5887:
5888: <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>
5889: with the same tag name as that of the token, then this is a
5890: <a href="#parse-error">parse error</a>; ignore the token.</p>
5891:
5892: <p>Otherwise, run these steps:</p>
5893:
5894: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5895:
5896: <li><p>If the <a href="#current-node">current node</a> is not an element with
5897: the same tag name as that of the token, then this is a
5898: <a href="#parse-error">parse error</a>.</p></li>
5899:
5900: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5901: until an element with the same tag name as the token has been
5902: popped from the stack.</p></li>
5903:
5904: <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
5905: last marker</a>.</li>
5906:
5907: </ol></dd>
5908:
5909: <dt>A start tag whose tag name is "table"</dt>
5910: <dd>
5911:
5912: <p>If the <code>Document</code> is <em>not</em> set to
5913: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
5914: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
5915: <code>p</code> element in scope</a>, then act as if an end tag
5916: with the tag name "p" had been seen.</p> <!-- i hate myself (this
5917: quirk was basically caused by acid2; if i'd realised we could
5918: change the specs when i wrote acid2, we could have avoided having
5919: any parsing-mode quirks) -Hixie -->
5920:
5921: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5922:
5923: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5924:
5925: <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>
5926:
5927: </dd>
5928:
5929: <dt>A start tag whose tag name is one of: "area", "basefont",
5930: "bgsound", "br", "embed", "img", "input", "keygen", "spacer",
5931: "wbr"</dt>
5932: <dd>
5933:
5934: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5935: any.</p>
5936:
5937: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5938: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5939: elements</a>.</p>
5940:
5941: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5942: token's <i>self-closing flag</i></a>, if it is set.</p>
5943:
5944: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
5945: shouldn't really do it for <area>, <basefont>, <bgsound>, and
5946: <spacer> -->
5947:
5948: </dd>
5949:
5950: <dt>A start tag whose tag name is one of: "param", "source"</dt>
5951: <dd>
5952:
5953: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5954: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5955: elements</a>.</p>
5956:
5957: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5958: token's <i>self-closing flag</i></a>, if it is set.</p>
5959:
5960: </dd>
5961:
5962: <dt>A start tag whose tag name is "hr"</dt>
5963: <dd>
5964:
5965: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5966: an element in scope">has a <code>p</code> element in
5967: scope</a>, then act as if an end tag with the tag name
5968: "p" had been seen.</p>
5969:
5970: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5971: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5972: elements</a>.</p>
5973:
5974: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5975: token's <i>self-closing flag</i></a>, if it is set.</p>
5976:
5977: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5978:
5979: </dd>
5980:
5981: <dt>A start tag whose tag name is "image"</dt>
5982: <dd>
5983: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
5984: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
5985: 2005-12, studies showed that around 0.2% of pages used the
5986: <image> element. -->
5987: </dd>
5988:
5989: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
5990: <dd>
5991:
5992: <p><a href="#parse-error">Parse error</a>.</p>
5993:
5994: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
5995: pointer</a> is not null, then ignore the token.</p>
5996:
5997: <p>Otherwise:</p>
5998:
5999: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6000: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6001: purely to reduce the number of errors (we don't care if they
6002: included the /, they're not supposed to be including the tag at
6003: all! -->
6004:
6005: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6006:
6007: <p>If the token has an attribute called "action", set the
6008: <code title="attr-form-action">action</code> attribute on the
6009: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6010: "action" attribute of the token.</p>
6011:
6012: <p>Act as if a start tag token with the tag name "hr" had been
6013: seen.</p>
6014:
6015: <p>Act as if a start tag token with the tag name "label" had been
6016: seen.</p>
6017:
6018: <p>Act as if a stream of character tokens had been seen (see below
6019: for what they should say).</p>
6020:
6021: <p>Act as if a start tag token with the tag name "input" had been
6022: seen, with all the attributes from the "isindex" token except
6023: "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
6024: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6025:
6026: <p>Act as if a stream of character tokens had been seen (see
6027: below for what they should say).</p>
6028:
6029: <p>Act as if an end tag token with the tag name "label" had been
6030: seen.</p>
6031:
6032: <p>Act as if a start tag token with the tag name "hr" had been
6033: seen.</p>
6034:
6035: <p>Act as if an end tag token with the tag name "form" had been
6036: seen.</p>
6037:
6038: <p>If the token has an attribute with the name "prompt", then the
6039: first stream of characters must be the same string as given in
6040: that attribute, and the second stream of characters must be
6041: empty. Otherwise, the two streams of character tokens together
6042: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6043: equivalent of "This is a searchable index. Insert your search
6044: keywords here: (input field)" in the user's preferred
6045: language.</p>
6046:
6047: </dd>
6048:
6049: <dt>A start tag whose tag name is "textarea"</dt>
6050: <dd>
6051:
6052: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6053: token.</p></li>
6054:
6055: <li><p>If the next token is a U+000A LINE FEED (LF) character
6056: token, then ignore that token and move on to the next
6057: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6058: ignored as an authoring convenience.)</p></li>
6059:
1.541 mike 6060: <li><p>Switch the tokenizer to the the <a href="#rcdata-state">RCDATA
6061: state</a>.</p></li>
1.1 mike 6062:
6063: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6064: current <a href="#insertion-mode">insertion mode</a>.</p>
6065:
6066: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6067: ok".</p></li>
6068:
1.540 mike 6069: <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 6070:
6071: </ol></dd>
6072:
6073: <dt>A start tag whose tag name is "xmp"</dt>
6074: <dd>
6075:
1.233 mike 6076: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6077: an element in scope">has a <code>p</code> element in
6078: scope</a>, then act as if an end tag with the tag name
6079: "p" had been seen.</p>
6080:
1.1 mike 6081: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6082: any.</p>
6083:
6084: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6085:
1.91 mike 6086: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6087:
6088: </dd>
6089:
6090: <dt>A start tag whose tag name is "iframe"</dt>
6091: <dd>
6092:
6093: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6094:
1.91 mike 6095: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6096:
6097: </dd>
6098:
6099: <dt>A start tag whose tag name is "noembed"</dt>
6100: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6101: <dd>
6102:
1.91 mike 6103: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6104:
6105: </dd>
6106:
6107: <dt>A start tag whose tag name is "select"</dt>
6108: <dd>
6109:
6110: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6111: any.</p>
6112:
6113: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6114:
6115: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6116:
6117: <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>",
6118: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6119: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6120: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6121: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6122: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6123: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6124: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6125:
6126: </dd>
6127:
6128: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6129: <dd>
6130:
6131: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6132: element in scope">has an <code>option</code> element in
6133: scope</a>, then act as if an end tag with the tag name "option"
6134: had been seen.</p>
6135:
6136: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6137: any.</p>
6138:
6139: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6140:
6141: </dd>
6142:
6143: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6144: <dd>
6145:
6146: <!-- the parsing rules for ruby really don't match IE much at all,
6147: but in practice the markup used is very simple and so strict
6148: compatibility with IE isn't required. For example, as defined
6149: here we get very, very different behaviour than IE for
6150: pathological cases like:
6151:
6152: <ruby><ol><li><p>a<rt>b
6153: <ruby>a<rt>b<p>c
6154:
6155: But in practice most ruby markup falls into these cases:
6156:
6157: <ruby>a<rt>b</ruby>
6158: <ruby>a<rp>b<rt>c<rp>d</ruby>
6159: <ruby>a<rt>b</rt></ruby>
6160: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6161:
6162: -->
6163:
6164: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6165: element in scope">has a <code>ruby</code> element in scope</a>,
6166: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6167: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6168: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6169: node</a> up to the node immediately before the bottommost
6170: <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
6171: elements</a>.</p>
6172:
6173: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6174:
6175: </dd>
6176:
6177: <dt>An end tag whose tag name is "br"</dt>
6178: <dd>
6179: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6180: the tag name "br" had been seen. Ignore the end tag token.</p>
6181: </dd>
6182:
6183: <dt>A start tag whose tag name is "math"</dt>
6184: <dd>
6185:
6186: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6187: any.</p>
6188:
6189: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6190: fixes the case of MathML attributes that are not all
6191: lowercase.)</p>
6192:
6193: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6194: fixes the use of namespaced attributes, in particular XLink.)</p>
6195:
6196: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6197: <a href="#mathml-namespace">MathML namespace</a>.</p>
6198:
6199: <!-- If we ever change the frameset-ok flag to an insertion mode,
6200: the following change would be implied, except we'd have to do it
6201: even in the face of a self-closed tag:
6202: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6203: -->
6204:
6205: <p>If the token has its <i>self-closing flag</i> set, pop the
6206: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6207: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6208: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6209:
6210: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6211: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6212: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6213: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6214: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6215: foreign content">in foreign content</a>".</p>
6216:
6217: </dd>
6218:
6219: <dt>A start tag whose tag name is "svg"</dt>
6220: <dd>
6221:
6222: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6223: any.</p>
6224:
6225: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6226: the case of SVG attributes that are not all lowercase.)</p>
6227:
6228: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6229: fixes the use of namespaced attributes, in particular XLink in
6230: SVG.)</p>
6231:
6232: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6233: <a href="#svg-namespace">SVG namespace</a>.</p>
6234:
6235: <!-- If we ever change the frameset-ok flag to an insertion mode,
6236: the following change would be implied, except we'd have to do it
6237: even in the face of a self-closed tag:
6238: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6239: -->
6240:
6241: <p>If the token has its <i>self-closing flag</i> set, pop the
6242: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6243: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6244: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6245:
6246: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6247: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6248: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6249: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6250: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6251: foreign content">in foreign content</a>".</p>
6252:
6253: </dd>
6254:
6255: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6256: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6257: "thead", "tr"</dt>
6258: <!--<dt>An end tag whose tag name is one of: "area", "base",
6259: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6260: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
6261: "noframes", "param", "script", "select", "source", "spacer",
6262: "style", "table", "textarea", "title", "wbr"</dt>-->
6263: <!--<dt>An end tag whose tag name is "noscript", if the
6264: <span>scripting flag</span> is enabled</dt>-->
6265: <dd>
6266: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6267: <!-- end tags are commented out because since they can never end
6268: up on the stack anyway, the default end tag clause will
6269: automatically handle them. we don't want to have text in the spec
6270: that is just an optimisation, as that detracts from the spec
6271: itself -->
6272: </dd>
6273:
6274: <dt>Any other start tag</dt>
6275: <dd>
6276:
6277: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6278: any.</p>
6279:
6280: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6281:
6282: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6283: element.</p>
6284:
6285: </dd>
6286:
6287: <dt>Any other end tag</dt>
6288: <dd>
6289:
6290: <p>Run the following steps:</p>
6291:
6292: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6293: node</a> (the bottommost node of the stack).</p></li>
6294:
6295: <li><p>If <var title="">node</var> has the same tag name as
6296: the end tag token, then:</p>
6297:
6298: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6299:
6300: <li><p>If the tag name of the end tag token does not match
6301: the tag name of the <a href="#current-node">current node</a>, this is a
6302: <a href="#parse-error">parse error</a>.</p></li>
6303:
6304: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6305: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6306:
6307: </ol></li>
6308:
6309: <li><p>Otherwise, if <var title="">node</var> is in neither the
6310: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6311: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6312: token, and abort these steps.</p></li>
6313:
6314: <li><p>Set <var title="">node</var> to the previous entry in the
6315: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6316:
6317: <li><p>Return to step 2.</p></li>
6318:
6319: </ol></dd>
6320:
1.540 mike 6321: </dl><h5 id="parsing-main-incdata"><span class="secno">9.2.5.11 </span>The "<dfn title="insertion mode: text">text</dfn>" insertion mode</h5>
1.1 mike 6322:
6323: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6324: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6325:
6326: <dl class="switch"><dt>A character token</dt>
6327: <dd>
6328:
6329: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6330: character</a> into the <a href="#current-node">current node</a>.</p>
6331:
6332: </dd>
6333:
6334: <dt>An end-of-file token</dt>
6335: <dd>
6336:
6337: <!-- can't be the fragment case -->
6338: <p><a href="#parse-error">Parse error</a>.</p>
6339:
6340: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6341: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6342: started"</a>.</p>
1.1 mike 6343:
6344: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6345: elements</a>.</p>
6346:
6347: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6348: insertion mode</a> and reprocess the current token.</p>
6349:
6350: </dd>
6351:
6352: <dt>An end tag whose tag name is "script"</dt>
6353: <dd>
6354:
6355: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6356: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6357:
6358: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6359: elements</a>.</p>
6360:
6361: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6362: insertion mode</a>.</p>
6363:
6364: <p>Let the <var title="">old insertion point</var> have the
6365: same value as the current <a href="#insertion-point">insertion point</a>. Let
6366: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6367: input character</a>.</p>
6368:
6369: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6370: one.</p>
6371:
6372: <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 6373: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6374: to be inserted into the tokenizer</a>, and might cause the
6375: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6376:
6377: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6378: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6379: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6380:
6381: <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
6382: <a href="#insertion-point">insertion point</a> to its previous value. This value
6383: might be the "undefined" value.)</p>
6384:
6385: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6386: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6387:
6388: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6389:
6390: <dd>
6391:
6392: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6393: processing of any nested invocations of the tokenizer, yielding
6394: control back to the caller. (Tokenization will resume when the
6395: caller returns to the "outer" tree construction stage.)</p>
6396:
6397: <p class="note">The tree construction stage of this particular
6398: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6399: 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 6400:
6401: </dd>
6402:
6403:
6404: <dt>Otherwise:</dt>
6405:
6406: <dd>
6407:
6408: <p>Follow these steps:</p>
6409:
1.484 mike 6410: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6411: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6412: parsing-blocking script</a>.</p></li>
6413:
6414: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6415: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6416: 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>
6417:
6418: <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
6419: scripts</a> and <var title="">the script</var>'s
6420: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6421:
6422: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6423: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6424: <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
6425: run.</p></li>
1.1 mike 6426:
6427: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6428: <a href="#next-input-character">next input character</a>.</p></li>
6429:
6430: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6431: by one (it should be zero before this step, so this sets it to
6432: one).</p></li>
6433:
1.484 mike 6434: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6435: <var title="">the script</var>.</p></li>
1.1 mike 6436:
6437: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6438: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6439: zero (which it always should be at this point), then set the
6440: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6441:
6442: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6443: again.</p></li>
6444:
1.484 mike 6445: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6446: script</a>, then repeat these steps from step 1.</p></li>
6447:
6448: </ol></dd>
6449:
6450: </dl></dd>
6451:
6452: <dt>Any other end tag</dt>
6453: <dd>
6454:
6455: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6456: elements</a>.</p>
6457:
6458: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6459: insertion mode</a>.</p>
6460:
6461: </dd>
6462:
6463: </dl><h5 id="parsing-main-intable"><span class="secno">9.2.5.12 </span>The "<dfn title="insertion mode: in table">in table</dfn>" insertion mode</h5>
6464:
6465: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6466: mode: in table">in table</a>", tokens must be handled as follows:</p>
6467:
6468: <dl class="switch"><dt>A character token</dt>
6469: <dd>
6470:
6471: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6472: be an empty list of tokens.</p>
6473:
6474: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6475: <a href="#insertion-mode">insertion mode</a>.</p>
6476:
6477: <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
6478: reprocess the token.</p>
6479:
6480: </dd>
6481:
6482: <dt>A comment token</dt>
6483: <dd>
6484: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6485: node</a> with the <code title="">data</code> attribute set to
6486: the data given in the comment token.</p>
6487: </dd>
6488:
6489: <dt>A DOCTYPE token</dt>
6490: <dd>
6491: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6492: </dd>
6493:
6494: <dt>A start tag whose tag name is "caption"</dt>
6495: <dd>
6496:
6497: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6498: below.)</p>
6499:
6500: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6501: formatting elements</a>.</p>
6502:
6503: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6504: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6505:
6506: </dd>
6507:
6508: <dt>A start tag whose tag name is "colgroup"</dt>
6509: <dd>
6510:
6511: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6512: below.)</p>
6513:
6514: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6515: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6516: group</a>".</p>
6517:
6518: </dd>
6519:
6520: <dt>A start tag whose tag name is "col"</dt>
6521: <dd>
6522: <p>Act as if a start tag token with the tag name "colgroup"
6523: had been seen, then reprocess the current token.</p>
6524: </dd>
6525:
6526: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6527: <dd>
6528:
6529: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6530: below.)</p>
6531:
6532: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6533: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6534: body</a>".</p>
6535:
6536: </dd>
6537:
6538: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6539: <dd>
6540: <p>Act as if a start tag token with the tag name "tbody" had
6541: been seen, then reprocess the current token.</p>
6542: </dd>
6543:
6544: <dt>A start tag whose tag name is "table"</dt>
6545: <dd>
6546:
6547: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6548: the tag name "table" had been seen, then, if that token wasn't
6549: ignored, reprocess the current token.</p>
6550:
6551: <p class="note">The fake end tag token here can only be
6552: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6553:
6554: </dd>
6555:
6556: <dt>An end tag whose tag name is "table"</dt>
6557: <dd>
6558:
6559: <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
6560: scope</a> with the same tag name as the token, this is a
6561: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6562: case</a>)</p>
6563:
6564: <p>Otherwise:</p>
6565:
6566: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6567: element has been popped from the stack.</p>
6568:
6569: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6570:
6571: </dd>
6572:
6573: <dt>An end tag whose tag name is one of: "body", "caption",
6574: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6575: "thead", "tr"</dt>
6576: <dd>
6577: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6578: </dd>
6579:
6580: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6581: <dd>
6582:
6583: <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
6584: mode</a>.</p>
6585:
6586: </dd>
6587:
6588: <dt>A start tag whose tag name is "input"</dt>
6589: <dd>
6590:
6591: <p>If the token does not have an attribute with the name "type",
6592: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6593: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6594: else" entry below.</p>
6595:
6596: <p>Otherwise:</p>
6597:
6598: <p><a href="#parse-error">Parse error</a>.</p>
6599:
6600: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6601:
6602: <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
6603: open elements</a>.</p>
6604:
6605: </dd>
6606:
6607: <dt>An end-of-file token</dt>
6608: <dd>
6609:
6610: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6611: <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 6612: error</a>.</p>
6613:
6614: <p class="note">It can only be the <a href="#current-node">current node</a> in
6615: the <a href="#fragment-case">fragment case</a>.</p>
6616:
6617: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6618:
6619: </dd>
6620:
6621: <dt>Anything else</dt>
6622: <dd>
6623:
6624: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6625: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6626: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6627: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6628: <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
6629: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6630: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6631:
6632: </dd>
6633:
6634: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6635: back to a table context</dfn>, it means that the UA must, while
6636: 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 6637: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6638: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6639:
6640: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6641: <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 6642: case</a>.</p>
6643:
6644:
6645:
6646: <h5 id="parsing-main-intabletext"><span class="secno">9.2.5.13 </span>The "<dfn title="insertion mode: in table text">in table text</dfn>" insertion mode</h5>
6647:
6648: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6649: mode: in table text">in table text</a>", tokens must be handled
6650: as follows:</p>
6651:
6652: <dl class="switch"><dt>A character token</dt>
6653: <dd>
6654:
6655: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6656: tokens</a></var> list.</p>
6657:
6658: </dd>
6659:
6660:
6661: <dt>Anything else</dt>
6662: <dd>
6663:
6664: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6665: tokens</a></var> list are character tokens that are not one of U+0009
6666: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6667: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6668: reprocess those character tokens using the rules given in the
6669: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6670: table">in table</a>" insertion mode.</p>
6671:
6672: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6673: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6674: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6675:
6676: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6677: insertion mode</a> and reprocess the token.</p>
6678:
6679: </dd>
6680:
6681: </dl><h5 id="parsing-main-incaption"><span class="secno">9.2.5.14 </span>The "<dfn title="insertion mode: in caption">in caption</dfn>" insertion mode</h5>
6682:
6683: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6684: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6685:
6686: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6687: <dd>
6688:
6689: <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
6690: scope</a> with the same tag name as the token, this is a
6691: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6692: case</a>)</p>
6693:
6694: <p>Otherwise:</p>
6695:
6696: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6697:
6698: <p>Now, if the <a href="#current-node">current node</a> is not a
6699: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6700: error</a>.</p>
6701:
6702: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6703: element has been popped from the stack.</p>
6704:
6705: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6706: the last marker</a>.</p>
6707:
6708: <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>
6709:
6710: </dd>
6711:
6712: <dt>A start tag whose tag name is one of: "caption", "col",
6713: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6714: <dt>An end tag whose tag name is "table"</dt>
6715: <dd>
6716:
6717: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6718: name "caption" had been seen, then, if that token wasn't
6719: ignored, reprocess the current token.</p>
6720:
6721: <p class="note">The fake end tag token here can only be
6722: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6723:
6724: </dd>
6725:
6726: <dt>An end tag whose tag name is one of: "body", "col",
6727: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6728: "tr"</dt>
6729: <dd>
6730: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6731: </dd>
6732:
6733: <dt>Anything else</dt>
6734: <dd>
6735: <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
6736: mode</a>.</p>
6737: </dd>
6738:
6739: </dl><h5 id="parsing-main-incolgroup"><span class="secno">9.2.5.15 </span>The "<dfn title="insertion mode: in column group">in column group</dfn>" insertion mode</h5>
6740:
6741: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6742: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6743:
6744: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6745: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6746: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6747: <dd>
6748: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6749: the <a href="#current-node">current node</a>.</p>
6750: </dd>
6751:
6752: <dt>A comment token</dt>
6753: <dd>
6754: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6755: node</a> with the <code title="">data</code> attribute set to
6756: the data given in the comment token.</p>
6757: </dd>
6758:
6759: <dt>A DOCTYPE token</dt>
6760: <dd>
6761: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6762: </dd>
6763:
6764: <dt>A start tag whose tag name is "html"</dt>
6765: <dd>
6766: <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
6767: mode</a>.</p>
6768: </dd>
6769:
6770: <dt>A start tag whose tag name is "col"</dt>
6771: <dd>
6772:
6773: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6774: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6775: elements</a>.</p>
6776:
6777: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6778: token's <i>self-closing flag</i></a>, if it is set.</p>
6779:
6780: </dd>
6781:
6782: <dt>An end tag whose tag name is "colgroup"</dt>
6783: <dd>
6784:
6785: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6786: <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 6787: error</a>; ignore the token. (<a href="#fragment-case">fragment
6788: case</a>)</p>
6789:
6790: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6791: 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
6792: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6793: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6794:
6795: </dd>
6796:
6797: <dt>An end tag whose tag name is "col"</dt>
6798: <dd>
6799: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6800: </dd>
6801:
6802: <dt>An end-of-file token</dt>
6803: <dd>
6804:
1.159 mike 6805: <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 6806: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6807: case</a>)</p>
6808:
6809: <p>Otherwise, act as described in the "anything else" entry
6810: below.</p>
6811:
6812: </dd>
6813:
6814: <dt>Anything else</dt>
6815: <dd>
6816:
6817: <p>Act as if an end tag with the tag name "colgroup" had been
6818: seen, and then, if that token wasn't ignored, reprocess the
6819: current token.</p>
6820:
6821: <p class="note">The fake end tag token here can only be
6822: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6823:
6824: </dd>
6825:
6826: </dl><h5 id="parsing-main-intbody"><span class="secno">9.2.5.16 </span>The "<dfn title="insertion mode: in table body">in table body</dfn>" insertion mode</h5>
6827:
6828: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6829: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6830:
6831: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6832: <dd>
6833:
6834: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6835: context</a>. (See below.)</p>
6836:
6837: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6838: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6839: in row">in row</a>".</p>
6840:
6841: </dd>
6842:
6843: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6844: <dd>
6845: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6846: the tag name "tr" had been seen, then reprocess the current
6847: token.</p>
6848: </dd>
6849:
6850: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6851: "thead"</dt>
6852: <dd>
6853:
6854: <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
6855: scope</a> with the same tag name as the token, this is a
6856: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6857:
6858: <p>Otherwise:</p>
6859:
6860: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6861: context</a>. (See below.)</p>
6862:
6863: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
6864: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
6865: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6866:
6867: </dd>
6868:
6869: <dt>A start tag whose tag name is one of: "caption", "col",
6870: "colgroup", "tbody", "tfoot", "thead"</dt>
6871: <dt>An end tag whose tag name is "table"</dt>
6872: <dd>
6873:
6874: <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
6875: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
6876: element in table scope</a>, this is a <a href="#parse-error">parse
6877: error</a>. Ignore the token. (<a href="#fragment-case">fragment
6878: case</a>)</p>
6879:
6880: <p>Otherwise:</p>
6881:
6882: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6883: context</a>. (See below.)</p>
6884:
6885: <p>Act as if an end tag with the same tag name as the
6886: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
6887: been seen, then reprocess the current token.</p>
6888:
6889: </dd>
6890:
6891: <dt>An end tag whose tag name is one of: "body", "caption",
6892: "col", "colgroup", "html", "td", "th", "tr"</dt>
6893: <dd>
6894: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6895: </dd>
6896:
6897: <dt>Anything else</dt>
6898: <dd>
6899: <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
6900: mode</a>.</p>
6901: </dd>
6902:
6903: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
6904: back to a table body context</dfn>, it means that the UA must,
6905: 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 6906: <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 6907: element, pop elements from the <a href="#stack-of-open-elements">stack of open
6908: elements</a>.</p>
6909:
6910: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6911: <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 6912: case</a>.</p>
6913:
6914:
6915: <h5 id="parsing-main-intr"><span class="secno">9.2.5.17 </span>The "<dfn title="insertion mode: in row">in row</dfn>" insertion mode</h5>
6916:
6917: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
6918: mode: in row">in row</a>", tokens must be handled as follows:</p>
6919:
6920: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
6921: <dd>
6922:
6923: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
6924: context</a>. (See below.)</p>
6925:
6926: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6927: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
6928: in cell">in cell</a>".</p>
6929:
6930: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6931: formatting elements</a>.</p>
6932:
6933: </dd>
6934:
6935: <dt>An end tag whose tag name is "tr"</dt>
6936: <dd>
6937:
6938: <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
6939: scope</a> with the same tag name as the token, this is a
6940: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6941: case</a>)</p>
6942:
6943: <p>Otherwise:</p>
6944:
6945: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
6946: context</a>. (See below.)</p>
6947:
6948: <p>Pop the <a href="#current-node">current node</a> (which will be a
6949: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
6950: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6951: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6952: body</a>".</p>
6953:
6954: </dd>
6955:
6956: <dt>A start tag whose tag name is one of: "caption", "col",
6957: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
6958: <dt>An end tag whose tag name is "table"</dt>
6959: <dd>
6960:
6961: <p>Act as if an end tag with the tag name "tr" had been seen,
6962: then, if that token wasn't ignored, reprocess the current
6963: token.</p>
6964:
6965: <p class="note">The fake end tag token here can only be
6966: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6967:
6968: </dd>
6969:
6970: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6971: "thead"</dt>
6972: <dd>
6973:
6974: <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
6975: scope</a> with the same tag name as the token, this is a
6976: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6977:
6978: <p>Otherwise, act as if an end tag with the tag name "tr" had
6979: been seen, then reprocess the current token.</p>
6980:
6981: </dd>
6982:
6983: <dt>An end tag whose tag name is one of: "body", "caption",
6984: "col", "colgroup", "html", "td", "th"</dt>
6985: <dd>
6986: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6987: </dd>
6988:
6989: <dt>Anything else</dt>
6990: <dd>
6991: <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
6992: mode</a>.</p>
6993: </dd>
6994:
6995: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
6996: back to a table row context</dfn>, it means that the UA must,
6997: 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 6998: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6999: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7000:
7001: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7002: <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 7003: case</a>.</p>
7004:
7005:
7006: <h5 id="parsing-main-intd"><span class="secno">9.2.5.18 </span>The "<dfn title="insertion mode: in cell">in cell</dfn>" insertion mode</h5>
7007:
7008: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7009: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7010:
7011: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7012: <dd>
7013:
7014: <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
7015: scope</a> with the same tag name as that of the token, then
7016: this is a <a href="#parse-error">parse error</a> and the token must be
7017: ignored.</p>
7018:
7019: <p>Otherwise:</p>
7020:
7021: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7022:
7023: <p>Now, if the <a href="#current-node">current node</a> is not an element
7024: with the same tag name as the token, then this is a
7025: <a href="#parse-error">parse error</a>.</p>
7026:
7027: <p>Pop elements from this stack until an element with the same
7028: tag name as the token has been popped from the stack.</p>
7029:
7030: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7031: the last marker</a>.</p>
7032:
7033: <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
7034: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7035: this point.)</p>
7036:
7037: </dd>
7038:
7039: <dt>A start tag whose tag name is one of: "caption", "col",
7040: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7041: <dd>
7042:
7043: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7044: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7045: a <code>td</code> or <code>th</code> element in table
7046: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7047: the token. (<a href="#fragment-case">fragment case</a>)</p>
7048:
7049: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7050: reprocess the current token.</p>
7051:
7052: </dd>
7053:
7054: <dt>An end tag whose tag name is one of: "body", "caption",
7055: "col", "colgroup", "html"</dt>
7056: <dd>
7057: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7058: </dd>
7059:
7060: <dt>An end tag whose tag name is one of: "table", "tbody",
7061: "tfoot", "thead", "tr"</dt>
7062: <dd>
7063:
7064: <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
7065: scope</a> with the same tag name as that of the token
7066: (which can only happen for "tbody", "tfoot" and "thead", or,
7067: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7068: error</a> and the token must be ignored.</p>
7069:
7070: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7071: reprocess the current token.</p>
7072:
7073: </dd>
7074:
7075: <dt>Anything else</dt>
7076: <dd>
7077: <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
7078: mode</a>.</p>
7079: </dd>
7080:
7081: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7082: mean to run the following algorithm:</p>
7083:
7084: <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>
7085: element in table scope</a>, then act as if an end tag token
7086: with the tag name "td" had been seen.</p></li>
7087:
7088: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7089: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7090: <code>th</code> element in table scope</a>; act as if an end
7091: tag token with the tag name "th" had been seen.</p></li>
7092:
7093: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7094: 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
7095: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7096: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7097: cell</a>".</p>
7098:
7099:
7100: <h5 id="parsing-main-inselect"><span class="secno">9.2.5.19 </span>The "<dfn title="insertion mode: in select">in select</dfn>" insertion mode</h5>
7101:
7102: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7103: mode: in select">in select</a>", tokens must be handled as follows:</p>
7104:
7105: <dl class="switch"><dt>A character token</dt>
7106: <dd>
7107: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7108: character</a> into the <a href="#current-node">current node</a>.</p>
7109: </dd>
7110:
7111: <dt>A comment token</dt>
7112: <dd>
7113: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7114: node</a> with the <code title="">data</code> attribute set to
7115: the data given in the comment token.</p>
7116: </dd>
7117:
7118: <dt>A DOCTYPE token</dt>
7119: <dd>
7120: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7121: </dd>
7122:
7123: <dt>A start tag whose tag name is "html"</dt>
7124: <dd>
7125: <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
7126: mode</a>.</p>
7127: </dd>
7128:
7129: <dt>A start tag whose tag name is "option"</dt>
7130: <dd>
7131:
7132: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7133: element, act as if an end tag with the tag name "option" had
7134: been seen.</p>
7135:
7136: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7137:
7138: </dd>
7139:
7140: <dt>A start tag whose tag name is "optgroup"</dt>
7141: <dd>
7142:
7143: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7144: element, act as if an end tag with the tag name "option" had
7145: been seen.</p>
7146:
7147: <p>If the <a href="#current-node">current node</a> is an
7148: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7149: tag name "optgroup" had been seen.</p>
7150:
7151: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7152:
7153: </dd>
7154:
7155: <dt>An end tag whose tag name is "optgroup"</dt>
7156: <dd>
7157:
7158: <p>First, if the <a href="#current-node">current node</a> is an
7159: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7160: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7161: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7162: the tag name "option" had been seen.</p>
7163:
7164: <p>If the <a href="#current-node">current node</a> is an
7165: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7166: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7167: <a href="#parse-error">parse error</a>; ignore the token.</p>
7168:
7169: </dd>
7170:
7171: <dt>An end tag whose tag name is "option"</dt>
7172: <dd>
7173:
7174: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7175: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7176: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7177: error</a>; ignore the token.</p>
7178:
7179: </dd>
7180:
7181: <dt>An end tag whose tag name is "select"</dt>
7182: <dd>
7183:
7184: <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
7185: scope</a> with the same tag name as the token, this is a
7186: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7187: case</a>)</p>
7188:
7189: <p>Otherwise:</p>
7190:
7191: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7192: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7193: stack.</p>
7194:
7195: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7196:
7197: </dd>
7198:
7199: <dt>A start tag whose tag name is "select"</dt>
7200: <dd>
7201:
7202: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7203: an end tag with the tag name "select" instead.</p>
7204:
7205: </dd>
7206:
7207: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7208: <dd>
1.73 mike 7209:
7210: <p><a href="#parse-error">Parse error</a>.</p>
7211:
1.124 mike 7212: <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>
7213: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7214: case</a>)</p>
1.73 mike 7215:
7216: <p>Otherwise, act as if an end tag with the tag name "select" had
7217: been seen, and reprocess the token.</p>
7218:
1.1 mike 7219: </dd>
7220:
7221: <dt>A start tag token whose tag name is "script"</dt>
7222: <dd>
7223: <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
7224: mode</a>.</p>
7225: </dd>
7226:
7227: <dt>An end-of-file token</dt>
7228: <dd>
7229:
7230: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7231: <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 7232: error</a>.</p>
7233:
7234: <p class="note">It can only be the <a href="#current-node">current node</a> in
7235: the <a href="#fragment-case">fragment case</a>.</p>
7236:
7237: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7238:
7239: </dd>
7240:
7241: <dt>Anything else</dt>
7242: <dd>
7243: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7244: </dd>
7245:
7246: </dl><h5 id="parsing-main-inselectintable"><span class="secno">9.2.5.20 </span>The "<dfn title="insertion mode: in select in table">in select in table</dfn>" insertion mode</h5>
7247:
7248: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7249: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7250:
7251: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7252: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7253: <dd>
7254: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7255: name "select" had been seen, and reprocess the token.</p>
7256: </dd>
7257:
7258: <dt>An end tag whose tag name is one of: "caption", "table",
7259: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7260: <dd>
7261:
7262: <p><a href="#parse-error">Parse error</a>.</p>
7263:
7264: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7265: element in table scope</a> with the same tag name as that
7266: of the token, then act as if an end tag with the tag name
7267: "select" had been seen, and reprocess the token. Otherwise,
7268: ignore the token.</p>
7269:
7270: </dd>
7271:
7272: <dt>Anything else</dt>
7273: <dd>
7274: <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
7275: mode</a>.</p>
7276: </dd>
7277:
1.168 mike 7278: </dl><h5 id="parsing-main-inforeign"><span class="secno">9.2.5.21 </span>The "<dfn title="insertion mode: in foreign content">in foreign content</dfn>" insertion mode</h5>
1.1 mike 7279:
7280: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7281: mode: in foreign content">in foreign content</a>", tokens must be
7282: handled as follows:</p>
7283:
7284: <dl class="switch"><dt>A character token</dt>
7285: <dd>
7286:
7287: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7288: character</a> into the <a href="#current-node">current node</a>.</p>
7289:
7290: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7291: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7292: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7293: flag</a> to "not ok".</p>
7294:
7295: </dd>
7296:
7297: <dt>A comment token</dt>
7298: <dd>
7299: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7300: node</a> with the <code title="">data</code> attribute set to
7301: the data given in the comment token.</p>
7302: </dd>
7303:
7304: <dt>A DOCTYPE token</dt>
7305: <dd>
7306: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7307: </dd>
7308:
7309: <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="#svg-namespace">SVG namespace</a>.</dt>
7310: <dd>
7311:
7312: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7313: elements</a>.</p>
7314:
7315: <p>Let the <var title="">old insertion point</var> have the
7316: same value as the current <a href="#insertion-point">insertion point</a>. Let
7317: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7318: input character</a>.</p>
7319:
7320: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7321: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7322:
7323: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7324: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7325: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7326:
1.159 mike 7327: <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 7328: tokenizer</a>, the parser will not be executed reentrantly,
7329: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7330:
7331: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7332: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7333: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7334:
7335: <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
7336: <a href="#insertion-point">insertion point</a> to its previous value. This value
7337: might be the "undefined" value.)</p>
7338:
7339: </dd>
7340:
7341: <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="#mathml-namespace">MathML namespace</a>.</dt>
7342: <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="#mathml-namespace">MathML namespace</a>.</dt>
7343: <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="#mathml-namespace">MathML namespace</a>.</dt>
7344: <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="#mathml-namespace">MathML namespace</a>.</dt>
7345: <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="#mathml-namespace">MathML namespace</a>.</dt>
7346: <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="#mathml-namespace">MathML namespace</a>.</dt>
7347: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">foreignObject</code> element in the <a href="#svg-namespace">SVG namespace</a>.</dt>
7348: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">desc</code> element in the <a href="#svg-namespace">SVG namespace</a>.</dt>
7349: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">title</code> element in the <a href="#svg-namespace">SVG namespace</a>.</dt>
7350: <dt>A start tag, if the <a href="#current-node">current node</a> is an element in the <a href="#html-namespace-0">HTML namespace</a>.</dt>
7351: <dt>An end tag</dt>
7352: <dd>
7353:
7354: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7355: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7356:
7357: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7358: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7359: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7360: element in scope">in scope</a> that has a namespace other than
7361: the <a href="#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7362: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7363:
7364: </dd>
7365:
7366: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7367: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7368: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7369: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7370: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7371: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7372: "li", "listing"<!-- so that pre and listing can be handled
7373: uniformly throughout the parser -->, "menu", "meta", "nobr",
7374: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7375: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7376: "span", "strong", "strike"<!-- so that s and strike can be handled
7377: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7378: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7379: list was determined empirically by studying over 6,000,000,000
1.422 mike 7380: pages that were specifically not XML pages -->
7381: <dt>A start tag whose tag name is "font", if the token has any
7382: attributes named "color", "face", or "size"</dt> <!-- the
7383: attributes here are required so that SVG <font> will go through as
7384: SVG but legacy <font>s won't -->
7385: <dt>An end-of-file token</dt> <dd>
1.1 mike 7386:
7387: <p><a href="#parse-error">Parse error</a>.</p>
7388:
7389: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
7390: the <a href="#current-node">current node</a> is in the <a href="#html-namespace-0">HTML
7391: namespace</a>.</p>
7392:
7393: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7394: insertion mode</a>, and reprocess the token.</p>
7395:
7396: </dd>
7397:
7398: <dt>Any other start tag</dt>
7399: <dd>
7400:
7401: <p>If the <a href="#current-node">current node</a> is an element in the
7402: <a href="#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
7403: attributes</a> for the token. (This fixes the case of MathML
7404: attributes that are not all lowercase.)</p>
7405:
7406: <p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7407: namespace</a>, and the token's tag name is one of the ones in
7408: the first column of the following table, change the tag name to
7409: the name given in the corresponding cell in the second
7410: column. (This fixes the case of SVG elements that are not all
7411: lowercase.)</p>
7412:
7413: <table><thead><tr><th> Tag name </th><th> Element name
7414: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7415: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7416: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7417: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7418: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7419: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7420: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7421: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7422: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7423: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7424: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7425: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7426: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7427: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7428: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7429: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7430: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7431: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7432: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7433: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7434: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7435: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7436: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7437: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7438: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7439: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7440: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7441: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7442: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7443: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7444: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7445: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7446: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7447: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7448: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7449: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7450: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
7451: </td></tr></tbody></table><p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7452: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7453: token. (This fixes the case of SVG attributes that are not all
7454: lowercase.)</p>
7455:
7456: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7457: fixes the use of namespaced attributes, in particular XLink in
7458: SVG.)</p>
7459:
7460: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7461: same namespace as the <a href="#current-node">current node</a>.</p>
7462:
7463: <p>If the token has its <i>self-closing flag</i> set, pop the
7464: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7465: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7466: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7467:
7468: </dd>
7469:
7470: </dl><h5 id="parsing-main-afterbody"><span class="secno">9.2.5.22 </span>The "<dfn title="insertion mode: after body">after body</dfn>" insertion mode</h5>
7471:
7472: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7473: mode: after body">after body</a>", tokens must be handled as follows:</p>
7474:
7475: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7476: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7477: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7478: <dd>
7479: <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
7480: mode</a>.</p>
7481: </dd>
7482:
7483: <dt>A comment token</dt>
7484: <dd>
7485: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7486: 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 7487: element), with the <code title="">data</code> attribute set to
7488: the data given in the comment token.</p>
7489: </dd>
7490:
7491: <dt>A DOCTYPE token</dt>
7492: <dd>
7493: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7494: </dd>
7495:
7496: <dt>A start tag whose tag name is "html"</dt>
7497: <dd>
7498: <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
7499: mode</a>.</p>
7500: </dd>
7501:
7502: <dt>An end tag whose tag name is "html"</dt>
7503: <dd>
7504:
7505: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7506: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7507: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7508:
7509: <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
7510: body</a>".</p>
7511:
7512: </dd>
7513:
7514: <dt>An end-of-file token</dt>
7515: <dd>
7516: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7517: </dd>
7518:
7519: <dt>Anything else</dt>
7520: <dd>
7521:
7522: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7523: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7524: body</a>" and reprocess the token.</p>
7525:
7526: </dd>
7527:
7528: </dl><h5 id="parsing-main-inframeset"><span class="secno">9.2.5.23 </span>The "<dfn title="insertion mode: in frameset">in frameset</dfn>" insertion mode</h5>
7529:
7530: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7531: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7532:
7533: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7534: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7535: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7536: <dd>
7537: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7538: the <a href="#current-node">current node</a>.</p>
7539: </dd>
7540:
7541: <dt>A comment token</dt>
7542: <dd>
7543: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7544: node</a> with the <code title="">data</code> attribute set to
7545: the data given in the comment token.</p>
7546: </dd>
7547:
7548: <dt>A DOCTYPE token</dt>
7549: <dd>
7550: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7551: </dd>
7552:
7553: <dt>A start tag whose tag name is "html"</dt>
7554: <dd>
7555: <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
7556: mode</a>.</p>
7557: </dd>
7558:
7559: <dt>A start tag whose tag name is "frameset"</dt>
7560: <dd>
7561: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7562: </dd>
7563:
7564: <dt>An end tag whose tag name is "frameset"</dt>
7565: <dd>
7566:
7567: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7568: <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 7569: error</a>; ignore the token. (<a href="#fragment-case">fragment
7570: case</a>)</p>
7571:
7572: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7573: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7574:
7575: <p>If the parser was <em>not</em> originally created as part
7576: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7577: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7578: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7579: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7580: frameset</a>".</p>
7581:
7582: </dd>
7583:
7584: <dt>A start tag whose tag name is "frame"</dt>
7585: <dd>
7586:
7587: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7588: Immediately pop the <a href="#current-node">current node</a> off the
7589: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7590:
7591: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7592: token's <i>self-closing flag</i></a>, if it is set.</p>
7593:
7594: </dd>
7595:
7596: <dt>A start tag whose tag name is "noframes"</dt>
7597: <dd>
7598: <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
7599: mode</a>.</p>
7600: </dd>
7601:
7602: <dt>An end-of-file token</dt>
7603: <dd>
7604:
7605: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7606: <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 7607: error</a>.</p>
7608:
7609: <p class="note">It can only be the <a href="#current-node">current node</a> in
7610: the <a href="#fragment-case">fragment case</a>.</p>
7611:
7612: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7613:
7614: </dd>
7615:
7616: <dt>Anything else</dt>
7617: <dd>
7618: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7619: </dd>
7620:
7621: </dl><h5 id="parsing-main-afterframeset"><span class="secno">9.2.5.24 </span>The "<dfn title="insertion mode: after frameset">after frameset</dfn>" insertion mode</h5>
7622:
7623: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7624: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7625:
7626: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7627: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7628: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7629: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7630: <dd>
7631: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7632: the <a href="#current-node">current node</a>.</p>
7633: </dd>
7634:
7635: <dt>A comment token</dt>
7636: <dd>
7637: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7638: node</a> with the <code title="">data</code> attribute set to
7639: the data given in the comment token.</p>
7640: </dd>
7641:
7642: <dt>A DOCTYPE token</dt>
7643: <dd>
7644: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7645: </dd>
7646:
7647: <dt>A start tag whose tag name is "html"</dt>
7648: <dd>
7649: <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
7650: mode</a>.</p>
7651: </dd>
7652:
7653: <dt>An end tag whose tag name is "html"</dt>
7654: <dd>
7655: <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
7656: frameset</a>".</p>
7657: </dd>
7658:
7659: <dt>A start tag whose tag name is "noframes"</dt>
7660: <dd>
7661: <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
7662: mode</a>.</p>
7663: </dd>
7664:
7665: <dt>An end-of-file token</dt>
7666: <dd>
7667: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7668: </dd>
7669:
7670: <dt>Anything else</dt>
7671: <dd>
7672: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7673: </dd>
7674:
1.336 mike 7675: </dl><h5 id="the-after-after-body-insertion-mode"><span class="secno">9.2.5.25 </span>The "<dfn title="insertion mode: after after body">after after body</dfn>" insertion mode</h5>
1.1 mike 7676:
7677: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7678: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7679:
7680: <dl class="switch"><dt>A comment token</dt>
7681: <dd>
7682: <p>Append a <code>Comment</code> node to the <code>Document</code>
7683: object with the <code title="">data</code> attribute set to the
7684: data given in the comment token.</p>
7685: </dd>
7686:
7687: <dt>A DOCTYPE token</dt>
7688: <dt>A character token that is one of U+0009 CHARACTER
7689: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7690: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7691: <dt>A start tag whose tag name is "html"</dt>
7692: <dd>
7693: <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
7694: mode</a>.</p>
7695: </dd>
7696:
7697: <dt>An end-of-file token</dt>
7698: <dd>
7699: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7700: </dd>
7701:
7702: <dt>Anything else</dt>
7703: <dd>
7704: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7705: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7706: reprocess the token.</p>
7707: </dd>
7708:
7709: </dl><h5 id="the-after-after-frameset-insertion-mode"><span class="secno">9.2.5.26 </span>The "<dfn title="insertion mode: after after frameset">after after frameset</dfn>" insertion mode</h5>
7710:
7711: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7712: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7713:
7714: <dl class="switch"><dt>A comment token</dt>
7715: <dd>
7716: <p>Append a <code>Comment</code> node to the <code>Document</code>
7717: object with the <code title="">data</code> attribute set to the
7718: data given in the comment token.</p>
7719: </dd>
7720:
7721: <dt>A DOCTYPE token</dt>
7722: <dt>A character token that is one of U+0009 CHARACTER
7723: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7724: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7725: <dt>A start tag whose tag name is "html"</dt>
7726: <dd>
7727: <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
7728: mode</a>.</p>
7729: </dd>
7730:
7731: <dt>An end-of-file token</dt>
7732: <dd>
7733: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7734: </dd>
7735:
7736: <dt>A start tag whose tag name is "noframes"</dt>
7737: <dd>
7738: <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
7739: mode</a>.</p>
7740: </dd>
7741:
7742: <dt>Anything else</dt>
7743: <dd>
7744: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7745: </dd>
7746:
1.266 mike 7747: </dl></div><div class="impl">
7748:
7749: <h4 id="the-end"><span class="secno">9.2.6 </span>The end</h4>
1.1 mike 7750:
7751: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7752: the document, the user agent must run the following steps:</p>
1.1 mike 7753:
1.484 mike 7754: <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
7755: "interactive" <!-- this also synchronously fires an event --> and
7756: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7757:
7758: <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
7759: document has finished parsing</a> is not empty, run these
7760: substeps:</p>
7761:
7762: <ol><li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the first
7763: <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
7764: execute when the document has finished parsing</a> has its
7765: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7766: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7767: blocking scripts</a>.</p></li>
7768:
7769: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7770: 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
7771: execute when the document has finished parsing</a>.</p></li>
7772:
7773: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7774: <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
7775: finished parsing</a> (i.e. shift out the first entry in the
7776: list).</p></li>
7777:
7778: <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
7779: document has finished parsing</a> is still not empty, repeat
7780: these substeps again from substep 1.</p>
7781:
7782: </li></ol></li>
7783:
7784: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the the <a href="semantics.html#list-of-scripts-that-will-execute-as-soon-as-possible">list of
7785: scripts that will execute as soon as possible</a> is
7786: empty.</p></li>
7787:
7788: <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
7789: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7790: <code>Document</code>.</p></li>
7791:
7792: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
7793: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7794: the <code>Document</code>.</p></li>
7795:
7796: <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
7797: readiness</a> to "complete". <!-- this also fires an event
7798: synchronously during the task --></p></li>
1.1 mike 7799:
1.484 mike 7800: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.1 mike 7801: 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 7802: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7803: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7804: its <code title="dom-event-target">target</code> set to the
7805: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7806: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7807:
1.569 mike 7808: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
7809: 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
7810: simple event</a> named <code title="event-pageshow">pageshow</code> at the
7811: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object.</p></li>
7812:
1.484 mike 7813: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.1 mike 7814: 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 in no namespace on the
7815: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7816: <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
7817: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7818: must bubble but not be cancelable and has no default
7819: action.</p></li>
1.1 mike 7820:
1.484 mike 7821: </ol><p>The <a href="browsers.html#task-source">task source</a> for the <a href="browsers.html#concept-task" title="concept-task">tasks</a> mentioned in this section is the
7822: <a href="browsers.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7823:
1.266 mike 7824: </div><div class="impl">
1.1 mike 7825:
7826: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">9.2.7 </span>Coercing an HTML DOM into an infoset</h4>
7827:
7828: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7829: conjunction with an XML pipeline, it is possible that the
7830: constructed DOM is not compatible with the XML tool chain in certain
7831: subtle ways. For example, an XML toolchain might not be able to
7832: represent attributes with the name <code title="">xmlns</code>,
7833: since they conflict with the Namespaces in XML syntax. There is also
7834: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7835: included in the DOM itself. This section specifies some rules for
7836: handling these issues.</p>
7837:
7838: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7839: drop DOCTYPEs altogether.</p>
7840:
7841: <p>If the XML API doesn't support attributes in no namespace that
7842: are named "<code title="">xmlns</code>", attributes whose names
7843: start with "<code title="">xmlns:</code>", or attributes in the
7844: <a href="#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
7845: attributes.</p>
7846:
7847: <p>The tool may annotate the output with any namespace declarations
7848: required for proper operation.</p>
7849:
7850: <p>If the XML API being used restricts the allowable characters in
7851: the local names of elements and attributes, then the tool may map
7852: all element and attribute local names that the API wouldn't support
7853: to a set of names that <em>are</em> allowed, by replacing any
7854: character that isn't supported with the uppercase letter U and the
7855: six digits of the character's Unicode code point when expressed in
7856: hexadecimal, using digits 0-9 and capital letters A-F as the
7857: symbols, in increasing numeric order.</p>
7858:
7859: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
7860: parser</a>, though it is neither a legal HTML element name nor a
7861: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
7862: element name (though it's still not legal in HTML by any means).</p>
7863:
7864: <p class="example">As another example, consider the attribute
7865: <code>xlink:href</code>. Used on a MathML element, it becomes, after
7866: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
7867: attribute with a prefix "<code title="">xlink</code>" and a local
7868: name "<code title="">href</code>". However, used on an HTML element,
7869: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
7870: might not be accepted by an XML API. It could thus get converted,
7871: becoming "<code title="">xlinkU00003Ahref</code>".</p>
7872:
7873: <p class="note">The resulting names from this conversion
7874: conveniently can't clash with any attribute generated by the
7875: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
7876: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
7877: algorithm's table.</p>
7878:
7879: <p>If the XML API restricts comments from having two consecutive
7880: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
7881: U+0020 SPACE character between any such offending characters.</p>
7882:
7883: <p>If the XML API restricts comments from ending in a
7884: U+002D HYPHEN-MINUS character (-), the tool may insert a single
7885: U+0020 SPACE character at the end of such comments.</p>
7886:
7887: <p>If the XML API restricts allowed characters in character data,
1.439 mike 7888: attribute values, or comments, the tool may replace any U+000C FORM
7889: FEED (FF) character with a U+0020 SPACE character, and any other
7890: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 7891:
7892: <p>If the tool has no way to convey out-of-band information, then
7893: the tool may drop the following information:</p>
7894:
7895: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
7896: <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>
7897:
7898: <li>The association between form controls and forms that aren't
7899: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
7900: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
7901:
7902: </ul><p class="note">The mutations allowed by this section apply
7903: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
7904: applied. For example, a <code title=""><a::></code> start tag
7905: will be closed by a <code title=""></a::></code> end tag, and
7906: never by a <code title=""></aU00003AU00003A></code> end tag, even
7907: if the user agent is using the rules above to then generate an
7908: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
7909:
1.266 mike 7910: </div><div class="impl">
1.1 mike 7911:
1.35 mike 7912: <h4 id="an-introduction-to-error-handling-and-strange-cases-in-the-parser"><span class="secno">9.2.8 </span>An introduction to error handling and strange cases in the parser</h4>
1.1 mike 7913:
7914: <p><i>This section is non-normative.</i></p>
7915:
7916: <p>This section examines some erroneous markup and discusses how
7917: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
7918:
7919:
7920: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">9.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
7921:
7922: <p><i>This section is non-normative.</i></p>
7923:
7924: <p>The most-often discussed example of erroneous markup is as
7925: follows:</p>
7926:
7927: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
7928:
7929: <p>The parsing of this markup is straightforward up to the "3". At
7930: this point, the DOM looks like this:</p>
7931:
1.159 mike 7932: <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
7933: 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 7934: <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
7935: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
7936: <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>
7937:
7938: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
7939: invoked. This is a simple case, in that the <var title="">formatting
7940: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
7941: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7942: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7943: <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 7944: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
7945: DOM tree is unmodified at this point.</p>
7946:
7947: <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
7948: the active formatting elements</a>, in this case just the
7949: <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
7950: for the "4" text node. After the end tag token for the "i" is also
7951: received, and the "5" text node is inserted, the DOM looks as
7952: follows:</p>
7953:
1.159 mike 7954: <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">9.2.8.2 </span>Misnested tags: <b><p></b></p></h5>
1.1 mike 7955:
7956: <p><i>This section is non-normative.</i></p>
7957:
7958: <p>A case similar to the previous one is the following:</p>
7959:
7960: <pre><b>1<p>2</b>3</p></pre>
7961:
7962: <p>Up to the "2" the parsing here is straightforward:</p>
7963:
1.159 mike 7964: <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 7965: "b" is parsed.</p>
7966:
7967: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7968: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7969: <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 7970: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
7971: <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>
7972:
7973: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
7974: in the previous example. However, in this case, there <em>is</em> a
7975: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
7976: this time the adoption agency algorithm isn't skipped over.</p>
7977:
1.159 mike 7978: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 7979: element. A conceptual "bookmark" marks the position of the
7980: <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
7981: elements</a>, but since that list has only one element in it,
7982: it won't have much effect.</p>
7983:
7984: <p>As the algorithm progresses, <var title="">node</var> ends up set
7985: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
7986: node</var> ends up set to the <var title="">furthest block</var>
7987: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
7988:
7989: <p>The <var title="">last node</var> gets appended (moved) to the
7990: <var title="">common ancestor</var>, so that the DOM looks like:</p>
7991:
1.159 mike 7992: <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 7993: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
7994:
1.159 mike 7995: <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 7996: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
7997:
1.159 mike 7998: <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 7999: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8000: elements</a>, so that when the "3" is parsed, it is appended to
8001: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8002:
1.159 mike 8003: <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">9.2.8.3 </span>Unexpected markup in tables</h5>
1.1 mike 8004:
8005: <p><i>This section is non-normative.</i></p>
8006:
8007: <p>Error handling in tables is, for historical reasons, especially
8008: strange. For example, consider the following markup:</p>
8009:
8010: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8011:
8012: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8013: directly inside a table like that, and the parser handles this case
8014: 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
8015: examining the DOM tree as it stands just after the
8016: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8017:
1.159 mike 8018: <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 8019: tag has been seen:</p>
8020:
1.159 mike 8021: <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
8022: 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 8023: <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
8024: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8025: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8026: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8027: table">in table</a>".</p>
8028:
8029: <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
8030: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8031: 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
8032: then handled in a rather straight-forward manner, taking the parser
8033: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8034: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8035: row</a>" insertion modes, after which the DOM looks as
8036: follows:</p>
8037:
1.159 mike 8038: <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
8039: 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 8040: <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
8041: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8042: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8043: mode: in row">in row</a>".</p>
8044:
8045: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8046: <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
8047: 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
8048: mode</a>).</p>
8049:
1.159 mike 8050: <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 8051: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8052: node:</p>
8053:
1.159 mike 8054: <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 8055: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8056: 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 8057: 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
8058: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8059: marker having been removed by the "td" end tag token); and the
8060: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8061: table body">in table body</a>".</p>
8062:
8063: <p>Thus it is that the "bbb" character tokens are found. These
8064: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8065: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8066: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8067: body">in table body</a>"). The character tokens are collected,
8068: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8069: seen, they are processed as a group. Since they are not all spaces,
8070: 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,
8071: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8072: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8073: parent">foster parenting</a>.</p>
8074:
8075: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8076: active formatting elements are reconstructed</a>, a
8077: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8078: parent">foster parented</a>, and then the "bbb" text node is
8079: appended to it:</p>
8080:
1.159 mike 8081: <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
8082: <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 8083: <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
8084: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8085: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8086: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8087: mode: in table body">in table body</a>".</p>
8088:
8089: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8090: character">space characters</a> instead of "bbb", then those
8091: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8092: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8093:
8094: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8095: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8096: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8097: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8098: elements</a>, so the "ccc" character tokens after the table
8099: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8100: time after the table:</p>
8101:
1.159 mike 8102: <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">9.2.8.4 </span>Scripts that modify the page as it is being parsed</h5>
1.1 mike 8103:
8104: <p><i>This section is non-normative.</i></p>
8105:
8106: <p>Consider the following markup, which for this example we will
8107: 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 8108: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8109: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8110:
8111: <pre><div id=a>
8112: <script>
8113: var div = document.getElementById('a');
8114: parent.document.body.appendChild(div);
8115: </script>
8116: <script>
8117: alert(document.URL);
8118: </script>
8119: </div>
8120: <script>
8121: alert(document.URL);
8122: </script></pre>
8123:
8124: <p>Up to the first "script" end tag, before the script is parsed,
8125: the result is relatively straightforward:</p>
8126:
1.306 mike 8127: <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="">
8128: </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 8129: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8130:
1.159 mike 8131: <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 8132: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8133: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8134: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8135:
8136: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8137: is inserted <em>into the outer <code>Document</code>
8138: object</em>.</p>
8139:
8140: <p>This also means that the <a href="browsers.html#script-s-global-object">script's global object</a> is
8141: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8142: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8143: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8144:
8145: <p class="note">This isn't a security problem since the script that
1.306 mike 8146: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.1 mike 8147: only do so because they have the two <code>Document</code> object
1.159 mike 8148: have the same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8149:
8150: <p>Thus, the first alert says "http://example.com/outer".</p>
8151:
1.306 mike 8152: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8153: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8154: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8155:
1.159 mike 8156: <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 8157:
8158:
8159:
1.215 mike 8160: <h3 id="namespaces"><span class="secno">9.3 </span>Namespaces</h3>
1.1 mike 8161:
8162: <p>The <dfn id="html-namespace-0">HTML namespace</dfn> is: <code>http://www.w3.org/1999/xhtml</code></p>
8163:
8164: <p>The <dfn id="mathml-namespace">MathML namespace</dfn> is: <code>http://www.w3.org/1998/Math/MathML</code></p>
8165:
8166: <p>The <dfn id="svg-namespace">SVG namespace</dfn> is: <code>http://www.w3.org/2000/svg</code></p>
8167:
8168: <p>The <dfn id="xlink-namespace">XLink namespace</dfn> is: <code>http://www.w3.org/1999/xlink</code></p>
8169:
8170: <p>The <dfn id="xml-namespace">XML namespace</dfn> is: <code>http://www.w3.org/XML/1998/namespace</code></p>
8171:
8172: <p>The <dfn id="xmlns-namespace">XMLNS namespace</dfn> is: <code>http://www.w3.org/2000/xmlns/</code></p>
8173:
8174: <hr><p>Data mining tools and other user agents that perform operations
1.83 mike 8175: on <code><a href="iana-considerations.html#text-html">text/html</a></code> content without running scripts,
1.1 mike 8176: evaluating CSS or XPath expressions, or otherwise exposing the
8177: resulting DOM to arbitrary content, may "support namespaces" by just
8178: asserting that their DOM node analogues are in certain namespaces,
8179: without actually exposing the above strings.</p>
8180:
8181:
8182:
8183:
8184: <h3 id="serializing-html-fragments"><span class="secno">9.4 </span>Serializing HTML fragments</h3>
8185:
8186: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8187: algorithm</dfn>. The algorithm takes as input a DOM
8188: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8189: exception.</p>
8190:
8191: <p class="note">This algorithm serializes the <em>children</em> of
8192: the node being serialized, not the node itself.</p>
8193:
8194: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8195: the empty string.</p></li>
8196:
8197: <li>
8198:
8199: <p>For each child node of <var title="">the node</var>, in
8200: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8201:
8202: </p><ol><li><p>Let <var title="">current node</var> be the child node
8203: being processed.</p></li>
8204:
8205: <li>
8206:
8207: <p>Append the appropriate string from the following list to
8208: <var title="">s</var>:</p>
8209:
8210: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8211:
8212: <dd>
8213:
8214: <p>Append a U+003C LESS-THAN SIGN (<code title=""><</code>)
8215: character, followed by the element's tag name. (For nodes
8216: created by the <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
8217: lowercase.)</p>
8218:
8219: <p>For each attribute that the element has, append a U+0020
8220: SPACE character, the attribute's name (which, for attributes
8221: 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
8222: U+003D EQUALS SIGN (<code title="">=</code>) character, a
8223: U+0022 QUOTATION MARK (<code title="">"</code>)
8224: character, the attribute's value, <a href="#escapingString" title="escaping a
8225: string">escaped as described below</a> in <i>attribute
8226: mode</i>, and a second U+0022 QUOTATION MARK (<code title="">"</code>) character.</p>
8227:
8228: <p>While the exact order of attributes is UA-defined, and may
8229: depend on factors such as the order that the attributes were
8230: given in the original markup, the sort order must be stable,
8231: such that consecutive invocations of this algorithm serialize an
8232: element's attributes in the same order.</p>
8233:
8234: <p>Append a U+003E GREATER-THAN SIGN (<code title="">></code>)
8235: character.</p>
8236:
8237: <p>If <var title="">current node</var> is an
1.5 mike 8238: <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>,
1.1 mike 8239: <code>bgsound</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 8240: <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>,
8241: <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>,
8242: <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>,
1.5 mike 8243: <code><a href="obsolete.html#spacer">spacer</a></code>, or <code>wbr</code> element, then
1.1 mike 8244: continue on to the next child node at this point.</p> <!--
8245: also, i guess: image and isindex, but we don't list those
8246: because we don't consider those "elements", more "macros", and
8247: thus we should never serialize them -->
8248:
8249: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8250: <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 8251: a U+000A LINE FEED (LF) character.</p>
8252:
8253: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8254: serialization algorithm</a> on the <var title="">current
8255: node</var> element (thus recursing into this algorithm for
8256: that element), followed by a U+003C LESS-THAN SIGN (<code title=""><</code>) character, a U+002F SOLIDUS (<code title="">/</code>) character, the element's tag name again,
8257: and finally a U+003E GREATER-THAN SIGN (<code title="">></code>) character.</p>
8258:
8259: </dd>
8260:
8261:
8262: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8263: node</dt>
8264:
8265: <dd>
8266:
1.19 mike 8267: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8268: <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 8269: <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 8270: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8271: if the parent of <var title="">current node</var> is
8272: <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
8273: node, then append the value of <var title="">current
8274: node</var>'s <code title="">data</code> IDL attribute
8275: literally.</p>
1.1 mike 8276:
8277: <p>Otherwise, append the value of <var title="">current
1.192 mike 8278: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8279: below</a>.</p>
8280:
8281: </dd>
8282:
8283:
8284: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8285:
8286: <dd>
8287:
8288: <p>Append the literal string <code><!--</code> (U+003C
8289: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8290: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8291: attribute, followed by the literal string <code>--></code>
8292: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8293: SIGN).</p>
8294:
8295: </dd>
8296:
8297:
8298: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8299:
8300: <dd>
8301:
8302: <p>Append the literal string <code><?</code> (U+003C
8303: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8304: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8305: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8306: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8307: character (>).</p>
1.1 mike 8308:
8309: </dd>
8310:
8311:
8312: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8313:
8314: <dd>
8315:
8316: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8317: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8318: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8319: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8320: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8321: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8322: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8323: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8324:
8325: </dd>
8326:
8327:
8328: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8329: occur as children of elements. If, despite this, they somehow do
8330: occur, this algorithm must raise an
8331: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8332:
8333: </li>
8334:
8335: </ol></li>
8336:
8337: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8338:
8339: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8340: purposes of the algorithm above) consists of replacing any
8341: occurrences of the "<code title="">&</code>" character by the
8342: string "<code title="">&amp;</code>", any occurrences of the
8343: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8344: 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
8345: 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>
8346:
8347: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8348: agent, and are therefore not covered in the algorithm above.</p>
8349:
8350: <p class="note">It is possible that the output of this algorithm, if
8351: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8352: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8353: element to which a <code title="">Comment</code> node has been
8354: appended is serialized and the output is then reparsed, the comment
8355: will end up being displayed in the text field. Similarly, if, as a
8356: result of DOM manipulation, an element contains a comment that
8357: contains the literal string "<code title="">--></code>", then
8358: when the result of serializing the element is parsed, the comment
8359: will be truncated at that point and the rest of the comment will be
8360: interpreted as markup. More examples would be making a
8361: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8362: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8363: 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
8364: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8365: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8366:
8367:
8368: <h3 id="parsing-html-fragments"><span class="secno">9.5 </span>Parsing HTML fragments</h3>
8369:
8370: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8371: algorithm</dfn>. The algorithm optionally takes as input an
8372: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8373: parser, as well as <var title="">input</var>, a string to parse, and
8374: returns a list of zero or more nodes.</p>
8375:
8376: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8377: in the parser section are parts that only occur if the parser was
8378: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8379: with such markings for informational purposes only; such markings
8380: have no normative weight. If it is possible for a condition
8381: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8382: parser wasn't created for the purposes of handling this algorithm,
8383: then that is an error in the specification.</p>
8384:
8385: <ol><li>
8386:
8387: <p>Create a new <code>Document</code> node, and mark it as being
8388: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8389:
8390: </li>
8391:
8392: <li>
8393:
8394: <p>If there is a <var title="">context</var> element, and the
8395: <code>Document</code> of the <var title="">context</var> element
8396: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8397: 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
8398: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8399: mode</a>, then let the <code>Document</code> be in
8400: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8401: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8402:
8403: </li>
8404:
8405: <li>
8406:
8407: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8408: the just created <code>Document</code> node.</p>
8409:
8410: </li>
8411:
8412: <li>
8413:
8414: <p>If there is a <var title="">context</var> element, run these
8415: substeps:</p>
8416:
8417: <ol><li>
8418:
1.541 mike 8419: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8420: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8421:
1.159 mike 8422: <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 8423: element</dt>
8424:
1.541 mike 8425: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8426:
8427:
8428: <dt>If it is a <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="semantics.html#script">script</a></code>,
1.159 mike 8429: <code><a href="obsolete.html#xmp">xmp</a></code>, <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 8430: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8431:
1.541 mike 8432: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8433:
8434:
8435: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8436:
1.541 mike 8437: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8438: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8439: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8440:
8441:
1.42 mike 8442: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8443:
1.541 mike 8444: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8445: state</a>.</dd>
1.1 mike 8446:
8447:
8448: <dt>Otherwise</dt>
8449:
1.541 mike 8450: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8451:
8452: </dl></li>
8453:
8454: <li>
8455:
1.159 mike 8456: <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 8457: with no attributes.</p>
8458:
8459: </li>
8460:
8461: <li>
8462:
8463: <p>Append the element <var title="">root</var> to the
8464: <code>Document</code> node created above.</p>
8465:
8466: </li>
8467:
8468: <li>
8469:
8470: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8471: it contains just the single element <var title="">root</var>.</p>
8472:
8473: </li>
8474:
8475: <li>
8476:
8477: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8478: parser's insertion mode appropriately</a>.</p>
8479:
8480: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8481:
8482: </li>
8483:
8484: <li>
8485:
8486: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8487: to the nearest node to the <var title="">context</var> element
8488: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8489: ancestor chain, and including the element itself, if it is a
8490: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8491: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8492:
8493: </li>
8494:
8495: </ol></li>
8496:
8497: <li>
8498:
8499: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8500: parser</a> just created the <var title="">input</var>. The
8501: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8502: <i>irrelevant</i>.</p>
8503:
8504: </li>
8505:
8506: <li>
8507:
8508: <p>Start the parser and let it run until it has consumed all the
8509: characters just inserted into the input stream.</p>
8510:
8511: </li>
8512:
8513: <li>
8514:
8515: <p>If there is a <var title="">context</var> element, return the
8516: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8517: order</a>.</p>
8518:
8519: <p>Otherwise, return the children of the <code>Document</code>
8520: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8521:
8522: </li>
8523:
1.123 mike 8524: </ol></div></body></html>
Webmaster
![[BACK]](/https/dev.w3.org/cvsweb/icons/back.gif){kind=icon}
Return to syntax.html CVS log ![[TXT]](/https/dev.w3.org/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/https/dev.w3.org/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / html5 / spec