Annotation of html5/spec/syntax.html, revision 1.608
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>
1.608 ! mike 227: </nav><p>This is revision 1.3434.</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
1.605 mike 231: <code><a href="iana.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
1.588 mike 286: order:</p><ol class="brief"><li>A U+003C LESS-THAN SIGN character (<).</li>
287: <li>A U+0021 EXCLAMATION MARK character (!).</li>
1.1 mike 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>
1.588 mike 293: <li>A U+003E GREATER-THAN SIGN character (>).</li>
1.1 mike 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
1.588 mike 372: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><div class="note">
1.374 mike 373:
374: <p>The HTML syntax does not support namespace
375: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
376:
377: <p>For instance, consider the following HTML fragment:</p>
378:
379: <pre><p>
380: <svg>
381: <metadata>
382: <!-- this is invalid -->
383: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
384: </metadata>
385: </svg>
386: </p></pre>
387:
388: <p>The innermost element, <code title="">cdr:license</code>, is
389: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
390: XML). In fact, as the comment in the fragment above says, the
391: fragment is actually non-conforming. This is because the SVG
392: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
393:
394: </div><p><a href="#normal-elements">Normal elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.588 mike 395: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>. Some
396: <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 397: content they are allowed to hold, beyond the restrictions imposed by
398: the content model and those described in this paragraph. Those
1.123 mike 399: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 400: giving the element's name. HTML elements all have names that only
1.464 mike 401: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
402: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
403: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
404: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 405: elements</a>, may be written with any mix of lower- and uppercase
406: letters that, when converted to all-lowercase, matches the element's
407: 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 408: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.588 mike 409: SIGN character (<).</li>
1.1 mike 410:
411: <li>The next few characters of a start tag must be the element's
412: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
413:
414: <li>If there are to be any attributes in the next step, there must
415: first be one or more <a href="infrastructure.html#space-character" title="space character">space
416: characters</a>.</li>
417:
418: <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
419: below. Attributes may be separated from each other by one or more
420: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
421:
422: <li>After the attributes, there may be one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>. (Some attributes
423: are required to be followed by a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes section</a> below.)</li>
424:
425: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 426: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
1.588 mike 427: element</a>, then there may be a single U+002F SOLIDUS character
428: (/). This character has no effect on <a href="#void-elements">void elements</a>,
429: but on <a href="#foreign-elements">foreign elements</a> it marks the start tag as
430: self-closing.</li>
1.1 mike 431:
432: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
1.588 mike 433: SIGN character (>).</li>
1.1 mike 434:
1.123 mike 435: </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
436: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.588 mike 437: SIGN character (<).</li>
1.1 mike 438:
439: <li>The second character of an end tag must be a U+002F SOLIDUS
1.588 mike 440: character (/).</li>
1.1 mike 441:
442: <li>The next few characters of an end tag must be the element's
443: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
444:
445: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
446: character">space characters</a>.</li>
447:
1.588 mike 448: <li>Finally, end tags must be closed by a U+003E GREATER-THAN SIGN
449: character (>).</li>
1.1 mike 450:
1.123 mike 451: </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
452: 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 453: one or more characters other than the <a href="infrastructure.html#space-character" title="space
454: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
455: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
456: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
457: the control characters, and any characters that are not defined by
1.462 mike 458: Unicode. In the HTML syntax, attribute names, even those for
459: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
460: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 461: 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 462: 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 463: 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 464:
465: <dd>
466:
467: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
468: name</a>.</p>
469:
470: <div class="example">
471:
472: <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
473: the empty attribute syntax:</p>
474:
475: <pre><input <em>disabled</em>></pre>
476:
477: </div>
478:
479: <p>If an attribute using the empty attribute syntax is to be
480: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
481: character</a> separating the two.</p>
482:
483: </dd>
484:
1.2 mike 485: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 486:
487: <dd>
488:
489: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
490: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
491: characters</a>, followed by a single U+003D EQUALS SIGN
492: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
493: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
494: addition to the requirements given above for attribute values,
495: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
1.588 mike 496: characters</a>, any U+0022 QUOTATION MARK characters ("),
497: U+0027 APOSTROPHE characters ('), U+003D EQUALS SIGN
498: characters (=), U+003C LESS-THAN SIGN characters (<), U+003E
499: GREATER-THAN SIGN characters (>), or U+0060 GRAVE ACCENT
500: characters (`), and must not be the empty string.</p>
1.463 mike 501:
502: <!-- The ` character is in this list on a temporary basis, waiting
503: for IE to fix it's parsing bug whereby it treats ` as an
504: attribute value delimiter. Otherwise, escaping software that
505: tries to be clever and not use quotes when it doesn't need to
506: could be tricked by an attacker.
507:
508: Posit a site that allows the user to input text that is used
509: verbatim in two attributes, such that the user can set the
510: first attribute's value to:
511:
512: `
513:
514: ...and the second to:
515:
516: ` onload='...payload...' end=x
517:
518: ...with the assumption that the site is going to not quote
519: the first one, and quote the second one with double quotes:
520:
521: <body title=` class="` onload='...payload...' end=x">
522:
523: In IE, this is treated as:
524:
525: <body title=' class="'
526: onload='...payload...'
527: end='x"'>
528:
529: -->
530:
1.1 mike 531:
532: <div class="example">
533:
534: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
535: with the unquoted attribute value syntax:</p>
536:
537: <pre><input <em>value=yes</em>></pre>
538:
539: </div>
540:
541: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 542: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 543: 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 544: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
545:
546: </dd>
547:
548: <dt>Single-quoted attribute value syntax</dt>
549:
550: <dd>
551:
552: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
553: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
554: characters</a>, followed by a single U+003D EQUALS SIGN
555: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
556: character">space characters</a>, followed by a single U+0027
1.588 mike 557: APOSTROPHE character ('), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 558: addition to the requirements given above for attribute values,
1.588 mike 559: must not contain any literal U+0027 APOSTROPHE characters ('), and
560: finally followed by a second single U+0027 APOSTROPHE character
561: (').</p>
1.1 mike 562:
563: <div class="example">
564:
565: <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
566: single-quoted attribute value syntax:</p>
567:
568: <pre><input <em>type='checkbox'</em>></pre>
569:
570: </div>
571:
572: <p>If an attribute using the single-quoted attribute syntax is to
573: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
574: character</a> separating the two.</p>
575:
576: </dd>
577:
578: <dt>Double-quoted attribute value syntax</dt>
579:
580: <dd>
581:
582: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
583: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
584: characters</a>, followed by a single U+003D EQUALS SIGN
585: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
586: character">space characters</a>, followed by a single U+0022
1.588 mike 587: QUOTATION MARK character ("), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 588: addition to the requirements given above for attribute values,
1.588 mike 589: must not contain any literal U+0022 QUOTATION MARK characters ("),
590: and finally followed by a second single U+0022 QUOTATION MARK
591: character (").</p>
1.1 mike 592:
593: <div class="example">
594:
595: <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
596: double-quoted attribute value syntax:</p>
597:
598: <pre><input <em>name="be evil"</em>></pre>
599:
600: </div>
601:
602: <p>If an attribute using the double-quoted attribute syntax is to
603: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
604: character</a> separating the two.</p>
605:
606: </dd>
607:
608: </dl><p>There must never be two or more attributes on the same start tag
609: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 610: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
611: one of the namespaced attributes given by the local name and
612: namespace of the first and second cells of a row from the following
613: table, it must be written using the name given by the third cell
614: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
615: </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>
616: </td></tr><tr><td> <code title="">arcrole</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:arcrole</code>
617: </td></tr><tr><td> <code title="">href</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:href</code>
618: </td></tr><tr><td> <code title="">role</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:role</code>
619: </td></tr><tr><td> <code title="">show</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:show</code>
620: </td></tr><tr><td> <code title="">title</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:title</code>
621: </td></tr><tr><td> <code title="">type</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:type</code>
622: </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>
623: </td></tr><tr><td> <code title="">lang</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:lang</code>
624: </td></tr><tr><td> <code title="">space</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:space</code>
625: </td></tr><tr><td> <code title="">xmlns</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns</code>
626: </td></tr><tr><td> <code title="">xlink</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns:xlink</code>
627: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in the <a href="#syntax">the
628: 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 629: is not present; it is implied, but it is still there. An HTML
1.159 mike 630: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 631: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 632: 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
633: 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
634: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
635: 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 636: element is empty, or--> if the first thing inside the
1.159 mike 637: <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
638: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
639: 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
640: 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 641: 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 642: 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 643: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
644: tag is present, the parser makes <style> and <script> elements
645: between </head> and <body> end up in the <head> instead of implying
1.159 mike 646: 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
647: 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 648: 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 649: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
650: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 651: 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 652: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
653: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 654: <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 655: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
656: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
657: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 658: 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 659: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
660: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
661: <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 662: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 663: <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 664: <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>,
665: <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>,
666: <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>,
667: <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>,
668: <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 669: <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>,
670: element, or if there is no more content in the parent element and
1.123 mike 671: 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 672: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
673: 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 674: 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 675: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
676: 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 677: 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 678: <select>; commented out text below can handle the non-<select> case
1.123 mike 679: 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 680: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
681: <code>select</code> element and--> is immediately followed by
682: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
683: that are ancestors of the <code>optgroup</code> element, up to and
684: including the first ancestor element that is not an
685: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 686: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 687: <select><optgroup></select>
688: <p id=x><optgroup></optgroup>x</p>
689: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
690: <p><optgroup id=x><optgroup></optgroup>x</p>
691: <p><optgroup><optgroup id=x>x</p>
1.123 mike 692: --><!-- </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 693: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
694: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
695: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 696: 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 697: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
698: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
699: 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 700: 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 701: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 702: <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 703: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
704: 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 705: 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 706: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
707: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
708: 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
709: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
710: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 711: 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 712: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
713: 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 714: 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 715: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
716: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 717: 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 718: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
719: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 720: 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 721: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
722: 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 723: 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 724: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
725: 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 726: 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
727: 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
728: 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 729: elements, even though these elements are technically allowed inside
730: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
731: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
732: 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 733: 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
734: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 735: 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>
736: elements. This does not affect the processing of the element. The
1.304 mike 737: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 738: <em>must</em> be included if the element's contents themselves start
739: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
740: otherwise the leading newline in the contents would be treated like
741: the optional newline, and ignored).</p><div class="example">
1.1 mike 742: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
743: <pre><pre>Hello</pre></pre>
744: <pre><pre><br>Hello</pre></pre>
1.373 mike 745: </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
746: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
747: contain any occurrences of the string "<code title=""></</code>"
748: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 749: case-insensitively match the tag name of the element followed by one
750: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 751: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.542 mike 752: 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 753: attributes, and comments. Text must consist of Unicode characters.
754: Text must not contain U+0000 characters. Text must not contain
1.316 mike 755: permanently undefined Unicode characters (noncharacters). Text must
756: not contain control characters other than <a href="infrastructure.html#space-character" title="space
757: character">space characters</a>. Extra constraints are placed on
758: what is and what is not allowed in text based on where the text is
759: 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 760: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
761: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.123 mike 762: 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 763: to escape characters that couldn't otherwise legally be included in
1.588 mike 764: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND character
765: (&). Following this, there are three possible kinds of character
766: references:</p><dl><dt>Named character references</dt>
1.1 mike 767:
768: <dd>The ampersand must be followed by one of the names given in the
769: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
770: case. The name must be one that is terminated by a U+003B SEMICOLON
1.464 mike 771: character (;).</dd>
1.1 mike 772:
773:
774: <dt>Decimal numeric character reference</dt>
775:
776: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 777: character (#), followed by one or more digits in the range U+0030
778: DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing a base-ten
779: integer that corresponds to a Unicode code point that is allowed
780: according to the definition below. The digits must then be followed
781: by a U+003B SEMICOLON character (;).</dd>
1.1 mike 782:
783:
784: <dt>Hexadecimal numeric character reference</dt>
785:
786: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 787: character (#), which must be followed by either a U+0078 LATIN
788: SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL LETTER X
789: character (X), which must then be followed by one or more digits in
790: the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061
791: LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041
792: LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
1.464 mike 793: representing a base-sixteen integer that corresponds to a Unicode
794: code point that is allowed according to the definition below. The
795: digits must then be followed by a U+003B SEMICOLON character
796: (;).</dd>
1.378 mike 797:
798: </dl><p>The numeric character reference forms described above are allowed
799: to reference any Unicode code point other than U+0000, permanently
800: undefined Unicode characters (noncharacters), and control characters
801: other than <a href="infrastructure.html#space-character" title="space character">space
802: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 803: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
804: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
805: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
1.588 mike 806: (<), or another U+0026 AMPERSAND character (&).</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 807: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
808: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
809: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
810: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
811: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
812: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
813: that the text must not contain the three character sequence U+005D
814: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
815: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
816: section must be ended by the three character sequence U+005D RIGHT
817: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.159 mike 818: 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 819: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
820: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
821: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
822: restriction that the text must not start with a single U+003E
1.588 mike 823: GREATER-THAN SIGN character (>), nor start with a U+002D
824: HYPHEN-MINUS character (-) followed by a U+003E GREATER-THAN SIGN
825: (>) character, nor contain two consecutive U+002D HYPHEN-MINUS
826: characters (<code title="">--</code>), nor end with a U+002D
827: HYPHEN-MINUS character (-). Finally, the comment must be ended by
1.1 mike 828: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 829: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 830:
1.159 mike 831: <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 832:
833: <p><i>This section only applies to user agents, data mining tools,
834: and conformance checkers.</i></p>
835:
836: <p class="note">The rules for parsing XML documents into DOM trees
837: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
838: syntax</a>".</p>
839:
840: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
841: rules described in this section to generate the DOM trees. Together,
842: these rules define what is referred to as the <dfn id="html-parser">HTML
843: parser</dfn>.</p>
844:
845: <div class="note">
846:
847: <p>While the HTML syntax described in this specification bears a
848: close resemblance to SGML and XML, it is a separate language with
849: its own parsing rules.</p>
850:
1.183 mike 851: <p>Some earlier versions of HTML (in particular from HTML2 to
852: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 853: (if any) web browsers ever implemented true SGML parsing for HTML
854: documents; the only user agents to strictly handle HTML as an SGML
855: application have historically been validators. The resulting
856: confusion — with validators claiming documents to have one
857: representation while widely deployed Web browsers interoperably
858: implemented a different representation — has wasted decades
859: of productivity. This version of HTML thus returns to a non-SGML
860: basis.</p>
861:
862: <p>Authors interested in using SGML tools in their authoring
863: pipeline are encouraged to use XML tools and the XML serialization
864: of HTML.</p>
865:
866: </div>
867:
868: <p>This specification defines the parsing rules for HTML documents,
869: whether they are syntactically correct or not. Certain points in the
870: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
871: errors</dfn>. The error handling for parse errors is well-defined:
872: user agents must either act as described below when encountering
873: such problems, or must abort processing at the first error that they
874: encounter for which they do not wish to apply the rules described
875: below.</p>
876:
877: <p>Conformance checkers must report at least one parse error
878: condition to the user if one or more parse error conditions exist in
879: the document and must not report parse error conditions if none
880: exist in the document. Conformance checkers may report more than one
1.174 mike 881: parse error condition if more than one parse error condition exists
1.1 mike 882: in the document. Conformance checkers are not required to recover
883: from parse errors.</p>
884:
885: <p class="note">Parse errors are only errors with the
886: <em>syntax</em> of HTML. In addition to checking for parse errors,
887: conformance checkers will also verify that the document obeys all
888: the other conformance requirements described in this
889: specification.</p>
890:
891: <p>For the purposes of conformance checkers, if a resource is
892: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
893: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
894:
1.266 mike 895: </div><div class="impl">
1.1 mike 896:
897: <h4 id="overview-of-the-parsing-model"><span class="secno">9.2.1 </span>Overview of the parsing model</h4>
898:
899: <p>The input to the HTML parsing process consists of a stream of
900: Unicode characters, which is passed through a
901: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
902: construction</a> stage. The output is a <code>Document</code>
903: object.</p>
904:
905: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
906: support scripting</a> do not have to actually create a DOM
907: <code>Document</code> object, but the DOM tree in such cases is
908: still used as the model for the rest of the specification.</p>
909:
910: <p>In the common case, the data handled by the tokenization stage
1.159 mike 911: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
912: 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 913:
914: <p><img alt="" src="images/parsing-model-overview.png"></p>
915:
916: <p id="nestedParsing">There is only one set of states for the
917: tokenizer stage and the tree construction stage, but the tree
918: construction stage is reentrant, meaning that while the tree
919: construction stage is handling one token, the tokenizer might be
920: resumed, causing further tokens to be emitted and processed before
921: the first token's processing is complete.</p>
922:
923: <div class="example">
924:
925: <p>In the following example, the tree construction stage will be
926: called upon to handle a "p" start tag token while handling the
927: "script" start tag token:</p>
928:
929: <pre>...
930: <script>
931: document.write('<p>');
932: </script>
933: ...</pre>
934:
935: </div>
936:
937: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
938: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
939: pause flag</dfn>, which must be initially set to false.</p>
940:
1.266 mike 941: </div><div class="impl">
1.1 mike 942:
943: <h4 id="the-input-stream"><span class="secno">9.2.2 </span>The <dfn>input stream</dfn></h4>
944:
945: <p>The stream of Unicode characters that comprises the input to the
946: tokenization stage will be initially seen by the user agent as a
947: stream of bytes (typically coming over the network or from the local
948: file system). The bytes encode the actual characters according to a
949: particular <em>character encoding</em>, which the user agent must
950: use to decode the bytes into characters.</p>
951:
952: <p class="note">For XML documents, the algorithm user agents must
953: use to determine the character encoding is given by the XML
1.104 mike 954: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 955:
956:
1.168 mike 957: <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 958:
959: <p>In some cases, it might be impractical to unambiguously determine
960: the encoding before parsing the document. Because of this, this
961: specification provides for a two-pass mechanism with an optional
962: pre-scan. Implementations are allowed, as described below, to apply
963: a simplified parsing algorithm to whatever bytes they have available
964: before beginning to parse the document. Then, the real parser is
965: started, using a tentative encoding derived from this pre-parse and
966: other out-of-band metadata. If, while the document is being loaded,
967: the user agent discovers an encoding declaration that conflicts with
968: this information, then the parser can get reinvoked to perform a
969: parse of the document with the real encoding.</p>
970:
971: <p id="documentEncoding">User agents must use the following
972: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
973: the character encoding to use when decoding a document in the first
974: pass. This algorithm takes as input any out-of-band metadata
975: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
976: and all the bytes available so far, and returns an encoding and a
977: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
978: confidence is either <i>tentative</i>, <i>certain</i>, or
979: <i>irrelevant</i>. The encoding used, and whether the confidence in
980: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
981: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
982: encoding is necessary, e.g. because the parser is operating on a
983: stream of Unicode characters and doesn't have to use an encoding at
984: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
985: <i>irrelevant</i>.</p>
986:
987: <ol><li><p>If the transport layer specifies an encoding, and it is
988: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
989: <i>certain</i>, and abort these steps.</p></li>
990:
991: <li><p>The user agent may wait for more bytes of the resource to be
992: available, either in this step or at any later step in this
993: algorithm. For instance, a user agent might wait 500ms or 512
994: bytes, whichever came first. In general preparsing the source to
995: find the encoding improves performance, as it reduces the need to
996: throw away the data structures used when parsing upon finding the
997: encoding information. However, if the user agent delays too long to
998: obtain data to determine the encoding, then the cost of the delay
999: could outweigh any performance improvements from the
1000: preparse.</p></li>
1001:
1002: <li><p>For each of the rows in the following table, starting with
1003: the first one and going down, if there are as many or more bytes
1004: available than the number of bytes in the first column, and the
1005: first bytes of the file match the bytes given in the first column,
1006: then return the encoding given in the cell in the second column of
1007: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1008: <i>certain</i>, and abort these steps:</p>
1009:
1010: <!-- this table is present in several forms in this file; keep them in sync -->
1011: <table><thead><tr><th>Bytes in Hexadecimal
1012: </th><th>Encoding
1013: </th></tr></thead><tbody><!-- nobody uses this
1014: <tr>
1015: <td>00 00 FE FF
1016: <td>UTF-32BE
1017: <tr>
1018: <td>FF FE 00 00
1019: <td>UTF-32LE
1020: --><tr><td>FE FF
1021: </td><td>UTF-16BE
1022: </td></tr><tr><td>FF FE
1023: </td><td>UTF-16LE
1024: </td></tr><tr><td>EF BB BF
1025: </td><td>UTF-8
1026: <!-- nobody uses this
1027: <tr>
1028: <td>DD 73 66 73
1029: <td>UTF-EBCDIC
1030: -->
1031: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1032: (BOMs).</p></li>
1033:
1034: <li><p>Otherwise, the user agent will have to search for explicit
1035: character encoding information in the file itself. This should
1036: proceed as follows:
1037:
1038: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1039: input stream, initially pointing at the first byte. If at any
1040: point during these substeps the user agent either runs out of
1041: bytes or decides that scanning further bytes would not be
1042: efficient, then skip to the next step of the overall character
1043: encoding detection algorithm. User agents may decide that scanning
1044: <em>any</em> bytes is not efficient, in which case these substeps
1045: are entirely skipped.</p>
1046:
1047: <p>Now, repeat the following "two" steps until the algorithm
1048: aborts (either because user agent aborts, as described above, or
1049: because a character encoding is found):</p>
1050:
1051: <ol><li><p>If <var title="">position</var> points to:</p>
1052:
1053: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1054: <dd>
1055:
1056: <p>Advance the <var title="">position</var> pointer so that it
1057: points at the first 0x3E byte which is preceded by two 0x2D
1058: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1059: after the 0x3C byte that was found. (The two 0x2D bytes can be
1060: the same as the those in the '<!--' sequence.)</p>
1061:
1062: </dd>
1063:
1064: <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>
1065: <dd>
1066:
1067: <ol><li><p>Advance the <var title="">position</var> pointer so
1068: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1069: 0x2F byte (the one in sequence of characters matched
1070: above).</p></li>
1071:
1072: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1073: an attribute</a> and its value. If no attribute was
1074: sniffed, then skip this inner set of steps, and jump to the
1075: second step in the overall "two step" algorithm.</p></li>
1076:
1077: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1078: then return to step 2 in these inner steps.</p></li>
1079:
1080: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1081: the attribute's value, interpreted as a character
1082: encoding.</p></li>
1083:
1084: <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
1085: extracting an encoding from a Content-Type</a>, giving the
1086: attribute's value as the string to parse. If an encoding is
1087: returned, let <var title="">charset</var> be that
1088: encoding. Otherwise, return to step 2 in these inner
1089: steps.</p></li>
1090:
1091: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1092: change the value of <var title="">charset</var> to
1093: UTF-8.</p></li>
1094:
1095: <li><p>If <var title="">charset</var> is a supported
1096: character encoding, then return the given encoding, with
1097: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1098: <i>tentative</i>, and abort all these steps.</p></li>
1099:
1100: <li><p>Otherwise, return to step 2 in these inner
1101: steps.</p></li>
1102:
1103: </ol></dd>
1104:
1.464 mike 1105: <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 1106: <dd>
1107:
1108: <ol><li><p>Advance the <var title="">position</var> pointer so
1109: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1110: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1111: (ASCII >) byte.</p></li>
1.1 mike 1112:
1113: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1114: attribute</a> until no further attributes can be found,
1115: then jump to the second step in the overall "two step"
1116: algorithm.</p></li>
1117:
1118: </ol></dd>
1119:
1120: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1121: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1122: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1123: <dd>
1124:
1125: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1126: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1127: 0x3C byte that was found.</p>
1128:
1129: </dd>
1130:
1131: <dt>Any other byte</dt>
1132: <dd>
1133:
1134: <p>Do nothing with that byte.</p>
1135:
1136: </dd>
1137:
1138: </dl></li>
1139:
1140: <li>Move <var title="">position</var> so it points at the next
1141: byte in the input stream, and return to the first step of this
1142: "two step" algorithm.</li>
1143:
1144: </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
1145: attribute</dfn>, it means doing this:</p>
1146:
1147: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1148: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1149: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1150: substep.</p></li>
1151:
1152: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1153: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1154: one.</p></li>
1155:
1156: <li><p>Otherwise, the byte at <var title="">position</var> is the
1157: start of the attribute name. Let <var title="">attribute
1158: name</var> and <var title="">attribute value</var> be the empty
1159: string.</p></li>
1160:
1161: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1162:
1.464 mike 1163: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1164: name</var> is longer than the empty string</dt>
1165:
1166: <dd>Advance <var title="">position</var> to the next byte and
1167: jump to the step below labeled <i>value</i>.</dd>
1168:
1169: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1170: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1171:
1172: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1173:
1.464 mike 1174: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1175:
1176: <dd>Abort the "get an attribute" algorithm. The attribute's
1177: name is the value of <var title="">attribute name</var>, its
1178: value is the empty string.</dd>
1179:
1.464 mike 1180: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1181: Z)</dt>
1.1 mike 1182:
1183: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1184: name</var> (where <var title="">b</var> is the value of the
1185: byte at <var title="">position</var>).</dd>
1186:
1187: <dt>Anything else</dt>
1188:
1189: <dd>Append the Unicode character with the same code point as the
1190: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1191: bytes outside the ASCII range are handled here, since only
1192: ASCII characters can contribute to the detection of a character
1193: encoding.)</dd>
1194:
1195: </dl></li>
1196:
1197: <li><p>Advance <var title="">position</var> to the next byte and
1198: return to the previous step.</p></li>
1199:
1200: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1201: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1202: advance <var title="">position</var> to the next byte, then,
1203: repeat this step.</p></li>
1204:
1205: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1206: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1207: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1208: string.</p></li>
1209:
1210: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1211: =) byte.</p></li>
1.1 mike 1212:
1213: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1214: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1215: advance <var title="">position</var> to the next byte, then,
1216: repeat this step.</p></li>
1217:
1218: <li><p>Process the byte at <var title="">position</var> as
1219: follows:</p>
1220:
1.464 mike 1221: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1222:
1223: <dd>
1224:
1225: <ol><li>Let <var title="">b</var> be the value of the byte at
1226: <var title="">position</var>.</li>
1227:
1228: <li>Advance <var title="">position</var> to the next
1229: byte.</li>
1230:
1231: <li>If the value of the byte at <var title="">position</var>
1232: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1233: an attribute" algorithm. The attribute's name is the value of
1234: <var title="">attribute name</var>, and its value is the
1235: value of <var title="">attribute value</var>.</li>
1236:
1.464 mike 1237: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1238: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1239: than the value of the byte at <var title="">position</var>.</li>
1240:
1241: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1242: the value of the byte at <var title="">position</var>.</li>
1243:
1244: <li>Return to the second step in these substeps.</li>
1245:
1246: </ol></dd>
1247:
1.464 mike 1248: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1249:
1250: <dd>Abort the "get an attribute" algorithm. The attribute's
1251: name is the value of <var title="">attribute name</var>, its
1252: value is the empty string.</dd>
1253:
1254:
1.464 mike 1255: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1256: Z)</dt>
1.1 mike 1257:
1258: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1259: value</var> (where <var title="">b</var> is the value of the
1260: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1261:
1262: <dt>Anything else</dt>
1263:
1264: <dd>Append the Unicode character with the same code point as the
1265: 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>
1266:
1267: </dl></li>
1268:
1269: <li><p>Process the byte at <var title="">position</var> as
1270: follows:</p>
1271:
1272: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1273: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1274: >)</dt>
1.1 mike 1275:
1276: <dd>Abort the "get an attribute" algorithm. The attribute's
1277: name is the value of <var title="">attribute name</var> and its
1278: value is the value of <var title="">attribute value</var>.</dd>
1279:
1.464 mike 1280: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1281: Z)</dt>
1.1 mike 1282:
1283: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1284: value</var> (where <var title="">b</var> is the value of the
1285: byte at <var title="">position</var>).</dd>
1286:
1287: <dt>Anything else</dt>
1288:
1289: <dd>Append the Unicode character with the same code point as the
1290: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1291:
1292: </dl></li>
1293:
1294: <li><p>Advance <var title="">position</var> to the next byte and
1295: return to the previous step.</p></li>
1296:
1297: </ol><p>For the sake of interoperability, user agents should not use a
1298: pre-scan algorithm that returns different results than the one
1299: described above. (But, if you do, please at least let us know, so
1300: that we can improve this algorithm and benefit everyone...)</p>
1301:
1302: </li>
1303:
1304: <li><p>If the user agent has information on the likely encoding for
1305: this page, e.g. based on the encoding of the page when it was last
1306: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1307: <i>tentative</i>, and abort these steps.</p></li>
1308:
1.322 mike 1309: <li>
1310:
1311: <p>The user agent may attempt to autodetect the character encoding
1312: from applying frequency analysis or other algorithms to the data
1.568 mike 1313: stream. Such algorithms may use information about the resource
1314: other than the resource's contents, including the address of the
1315: resource. If autodetection succeeds in determining a character
1.322 mike 1316: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1317: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1318:
1319: <p class="note">The UTF-8 encoding has a highly detectable bit
1320: pattern. Documents that contain bytes with values greater than
1321: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1322: while documents with byte sequences that do not match it are very
1323: likely not. User-agents are therefore encouraged to search for
1.485 mike 1324: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1325:
1326: </li>
1.1 mike 1327:
1.501 mike 1328: <li>
1329:
1330: <p>Otherwise, return an implementation-defined or user-specified
1331: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1332: <i>tentative</i>.</p>
1333:
1334: <p>In controlled environments or in environments where the
1335: encoding of documents can be prescribed (for example, for user
1336: agents intended for dedicated use in new networks), the
1337: comprehensive <code title="">UTF-8</code> encoding is
1338: suggested.</p>
1339:
1340: <p>In other environments, the default encoding is typically
1341: dependent on the user's locale (an approximation of the languages,
1342: and thus typically encodings, of the pages that the user is likely
1343: to frequent). The following table gives suggested defaults based
1.504 mike 1344: on the user's locale, for compatibility with legacy
1345: content. Locales are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1346:
1347: <!-- based on mozilla 1.9.1 localizations:
1348: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1349:
1.504 mike 1350: <table><thead><tr><th>Locale language
1.501 mike 1351: </th><th>Suggested default encoding
1352: </th></tr></thead><tbody><tr><td>ar
1353: </td><td>UTF-8
1354:
1355: </td></tr><tr><td>be
1356: </td><td>ISO-8859-5
1357:
1358: </td></tr><tr><td>bg
1359: </td><td>windows-1251
1360:
1361: </td></tr><tr><td>cs<!-- -CZ -->
1362: </td><td>ISO-8859-2
1363:
1364: </td></tr><tr><td>cy
1365: </td><td>UTF-8
1366:
1367: </td></tr><tr><td>fa<!-- -IR -->
1368: </td><td>UTF-8
1369:
1370: </td></tr><tr><td>he<!-- -IL -->
1371: </td><td>windows-1255
1372:
1373: </td></tr><tr><td>hr
1374: </td><td>UTF-8
1375:
1376: </td></tr><tr><td>hu<!-- -HU -->
1377: </td><td>ISO-8859-2
1378:
1379: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1380: </td><td>windows-31J <!-- Shift_JIS -->
1381:
1382: </td></tr><tr><td>kk
1383: </td><td>UTF-8
1384:
1385: </td></tr><tr><td>ko<!-- -KR -->
1386: </td><td>windows-949 <!-- EUC-KR -->
1387:
1388: </td></tr><tr><td>ku
1389: </td><td>windows-1254 <!-- ISO-8859-9 -->
1390:
1391: </td></tr><tr><td>lt
1392: </td><td>windows-1257
1393:
1394: </td></tr><tr><td>lv<!-- -LV -->
1395: </td><td>ISO-8859-13
1396:
1397: </td></tr><tr><td>mk<!-- -MK -->
1398: </td><td>UTF-8
1399:
1400: </td></tr><tr><td>or
1401: </td><td>UTF-8
1402:
1403: </td></tr><tr><td>pl<!-- -PL -->
1404: </td><td>ISO-8859-2
1405:
1406: </td></tr><tr><td>ro
1407: </td><td>UTF-8
1408:
1409: </td></tr><tr><td>ru
1410: </td><td>windows-1251
1411:
1412: </td></tr><tr><td>sk
1413: </td><td>windows-1250
1414:
1415: </td></tr><tr><td>sl
1416: </td><td>ISO-8859-2
1417:
1418: </td></tr><tr><td>sr
1419: </td><td>UTF-8
1420:
1421: </td></tr><tr><td>th
1422: </td><td>windows-874 <!-- TIS-620 -->
1423:
1424: </td></tr><tr><td>tr<!-- -TR -->
1425: </td><td>windows-1254 <!-- ISO-8859-9 -->
1426:
1.503 mike 1427: </td></tr><tr><td>uk
1.501 mike 1428: </td><td>windows-1251
1429:
1430: </td></tr><tr><td>vi
1431: </td><td>UTF-8
1432:
1433: </td></tr><tr><td>zh-CN
1434: </td><td>GB18030
1435:
1436: </td></tr><tr><td>zh-TW
1437: </td><td>Big5
1438:
1439: </td></tr><tr><td>All other locales
1440: </td><td>windows-1252
1441:
1442: </td></tr></tbody></table></li>
1.1 mike 1443:
1444: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1445: be set to the value returned from this algorithm, at the same time
1446: as the user agent uses the returned value to select the decoder to
1447: use for the input stream.</p>
1448:
1.582 mike 1449: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1450: of the HTTP specification, which requires that the encoding be
1451: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1452: encoding declaration</a> to the contrary, and of the RFC 2046,
1453: which requires that the encoding be assumed to be US-ASCII in the
1454: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1455: contrary. This specification's third approach is motivated by a
1456: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1457:
1.1 mike 1458:
1.237 mike 1459: <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 1460:
1.237 mike 1461: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1462: encodings, but may support more.</p>
1463:
1464: <p class="note">It is not unusual for Web browsers to support dozens
1465: if not upwards of a hundred distinct character encodings.</p>
1466:
1.365 mike 1467: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1468: every character encoding they support, and should support all the
1469: IANA-registered names and aliases of every character encoding they
1470: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1471:
1472: <p>When comparing a string specifying a character encoding with the
1473: name or alias of a character encoding to determine if they are
1474: 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
1475: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1476: case-insensitive</a> manner.</p>
1477:
1.539 mike 1478: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1479: first column of the following table to either convert content to
1480: Unicode characters or convert Unicode characters to bytes, it must
1481: instead use the encoding given in the cell in the second column of
1482: the same row. When a byte or sequence of bytes is treated
1483: differently due to this encoding aliasing, it is said to have been
1484: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1485:
1486: <table><caption>Character encoding overrides</caption>
1487: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1488: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1489: <a href="references.html#refsEUCKR">[EUCKR]</a>
1490: <a href="references.html#refsWIN949">[WIN949]</a>
1491: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1492: <a href="references.html#refsRFC1345">[RFC1345]</a>
1493: <a href="references.html#refsGBK">[GBK]</a>
1494: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1495: <a href="references.html#refsRFC1345">[RFC1345]</a>
1496: <a href="references.html#refsGBK">[GBK]</a>
1497: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1498: <a href="references.html#refsRFC1345">[RFC1345]</a>
1499: <a href="references.html#refsWIN1252">[WIN1252]</a>
1500: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1501: <a href="references.html#refsRFC1345">[RFC1345]</a>
1502: <a href="references.html#refsWIN1254">[WIN1254]</a>
1503: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1504: <a href="references.html#refsISO885911">[ISO885911]</a>
1505: <a href="references.html#refsWIN874">[WIN874]</a>
1506: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1507: <a href="references.html#refsRFC1345">[RFC1345]</a>
1508: <a href="references.html#refsWIN949">[WIN949]</a>
1509: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1510: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1511: <a href="references.html#refsWIN31J">[WIN31J]</a>
1512: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1513: <a href="references.html#refsTIS620">[TIS620]</a>
1514: <a href="references.html#refsWIN874">[WIN874]</a>
1515: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1516: <a href="references.html#refsRFC1345">[RFC1345]</a>
1517: <a href="references.html#refsWIN1252">[WIN1252]</a>
1518: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1519: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1520: violation</a> of the W3C Character Model specification, motivated
1521: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1522:
1523: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1524: been found, user agents must default to UTF-16LE.</p>
1525:
1526: <p class="note">The requirement to default UTF-16 to LE rather than
1527: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1528: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1529:
1530: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1531: 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>
1532:
1533: <p>Support for encodings based on EBCDIC is not recommended. This
1534: encoding is rarely used for publicly-facing Web content.</p>
1535:
1536: <p>Support for UTF-32 is not recommended. This encoding is rarely
1537: used, and frequently implemented incorrectly.</p>
1538:
1539: <p class="note">This specification does not make any attempt to
1540: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1541: and use of these encodings can thus lead to unexpected behavior in
1542: implementations of this specification.</p>
1543:
1544:
1545:
1546: <h5 id="preprocessing-the-input-stream"><span class="secno">9.2.2.3 </span>Preprocessing the input stream</h5>
1.1 mike 1547:
1548: <p>Given an encoding, the bytes in the input stream must be
1549: converted to Unicode characters for the tokenizer, as described by
1550: the rules for that encoding, except that the leading U+FEFF BYTE
1551: ORDER MARK character, if any, must not be stripped by the encoding
1552: layer (it is stripped by the rule below).</p> <!-- this is to
1553: prevent two leading BOMs from being both stripped, once by the
1554: decoder, and once by the parser -->
1555:
1556: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1557: could not be converted to Unicode code points must be converted to
1558: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1559:
1560: <p class="note">Bytes or sequences of bytes in the original byte
1561: stream that did not conform to the encoding specification
1562: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1563: errors that conformance checkers are expected to report.</p>
1564:
1.438 mike 1565: <p>Any byte or sequence of bytes in the original byte stream that is
1566: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1567: error</a>.</p>
1568:
1569: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1570: any are present.</p>
1571:
1.300 mike 1572: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1573: character regardless of whether that character was used to determine
1574: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1575: motivated by a desire to increase the resilience of user agents in
1576: the face of naïve transcoders.</p>
1577:
1.316 mike 1578: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1579: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1580: them to suddenly turn into codepoints when they go through a UTF-16
1581: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1582: CHARACTERs. Any occurrences of such characters and code points are
1583: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1584:
1585: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1586: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1587: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1588: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1589: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1590: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1591: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1592: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1593: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1594: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1595: errors</a>. These are all control characters or permanently
1596: undefined Unicode characters (noncharacters).</p>
1.1 mike 1597:
1598: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1599: characters are treated specially. Any CR characters that are
1600: followed by LF characters must be removed, and any CR characters not
1601: followed by LF characters must be converted to LF characters. Thus,
1602: newlines in HTML DOMs are represented by LF characters, and there
1603: are never any CR characters in the input to the
1604: <a href="#tokenization">tokenization</a> stage.</p>
1605:
1606: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1607: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1608: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1609: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1610: to have been <i><a href="#consumed">consumed</a></i>.</p>
1611:
1612: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1613: character or just before the end of the input stream) where content
1.159 mike 1614: 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 1615: inserted. The insertion point is relative to the position of the
1616: character immediately after it, it is not an absolute offset into
1617: the input stream. Initially, the insertion point is
1.10 mike 1618: undefined.</p>
1.1 mike 1619:
1620: <p>The "EOF" character in the tables below is a conceptual character
1621: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1622: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1623: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1624: 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 1625: consumed. Otherwise, the "EOF" character is not a real character in
1626: the stream, but rather the lack of any further characters.</p>
1627:
1628:
1.237 mike 1629: <h5 id="changing-the-encoding-while-parsing"><span class="secno">9.2.2.4 </span>Changing the encoding while parsing</h5>
1.1 mike 1630:
1631: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1632: encoding</dfn>, it must run the following steps. This might happen
1633: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1634: failed to find an encoding, or if it found an encoding that was not
1635: the actual encoding of the file.</p>
1636:
1637: <ol><li>If the new encoding is identical or equivalent to the encoding
1638: that is already being used to interpret the input stream, then set
1639: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1640: <i>certain</i> and abort these steps. This happens when the
1641: encoding information found in the file matches what the
1642: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1643: encoding, and in the second pass through the parser if the first
1644: pass found that the encoding sniffing algorithm described in the
1645: earlier section failed to find the right encoding.</li>
1646:
1647: <li>If the encoding that is already being used to interpret the
1648: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1649: <i>certain</i> and abort these steps. The new encoding is ignored;
1650: if it was anything but the same encoding, then it would be clearly
1651: incorrect.</li>
1652:
1653: <li>If the new encoding is a UTF-16 encoding, change it to
1654: UTF-8.</li>
1655:
1656: <li>If all the bytes up to the last byte converted by the current
1657: decoder have the same Unicode interpretations in both the current
1658: encoding and the new encoding, and if the user agent supports
1659: changing the converter on the fly, then the user agent may change
1660: to the new converter for the encoding on the fly. Set the
1661: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1662: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1663: <i>certain</i>, and abort these steps.</li>
1664:
1665: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1666: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1667: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1668: sniffing algorithm</a> and instead just set the encoding to the
1669: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1670: <i>certain</i>. Whenever possible, this should be done without
1671: actually contacting the network layer (the bytes should be
1672: re-parsed from memory), even if, e.g., the document is marked as
1673: not being cacheable. If this is not possible and contacting the
1674: network layer would involve repeating a request that uses a method
1675: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1676: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1677: <i>certain</i> and ignore the new encoding. The resource will be
1678: misinterpreted. User agents may notify the user of the situation,
1679: to aid in application development.</li>
1680:
1.266 mike 1681: </ol></div><div class="impl">
1682:
1683: <h4 id="parse-state"><span class="secno">9.2.3 </span>Parse state</h4>
1.1 mike 1684:
1685: <h5 id="the-insertion-mode"><span class="secno">9.2.3.1 </span>The insertion mode</h5>
1686:
1687: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1688: the primary operation of the tree construction stage.</p>
1689:
1690: <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
1691: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1692: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1693: "<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 1694: "<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 1695: "<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>",
1696: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1697: "<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
1698: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1699: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1700: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1701: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1702: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1703: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1704: frameset</a>" during the course of the parsing, as described in
1705: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1706: how tokens are processed and whether CDATA sections are
1707: supported.</p>
1708:
1709: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1710: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1711: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1712: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1713: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1714: "<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
1715: that the other modes defer to them at various times. When the
1716: algorithm below says that the user agent is to do something
1717: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1718: mode", where <var title="">m</var> is one of these modes, the user
1719: agent must use the rules described under the <var title="">m</var>
1720: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1721: <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>
1722: to a new value.</p>
1723:
1724: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1725: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1726: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1727: is also set. This is the insertion mode to which the tree
1728: construction stage will return.</p>
1.1 mike 1729:
1730: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1731: mode: in foreign content">in foreign content</a>", the
1732: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1733: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1734: foreign content">in foreign content</a>" mode to handle HTML
1735: (i.e. not foreign) content.</p>
1736:
1737: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1738: mode appropriately</dfn>, it means the UA must follow these
1739: steps:</p>
1740:
1741: <ol><li>Let <var title="">last</var> be false.</li>
1742:
1.604 mike 1743: <li>Let <var title="">foreign</var> be false.</li>
1744:
1.1 mike 1745: <li>Let <var title="">node</var> be the last node in the
1746: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1747:
1.604 mike 1748: <li><i>Loop</i>: If <var title="">node</var> is the first node in
1749: the stack of open elements, then set <var title="">last</var> to
1750: true and set <var title="">node</var> to the <var title="">context</var> element. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1751:
1752: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1.604 mike 1753: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" and jump to the
1754: step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1755:
1756: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1757: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1758: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1.604 mike 1759: mode: in cell">in cell</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1760:
1761: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1762: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1.604 mike 1763: mode: in row">in row</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1764:
1765: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1766: <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
1767: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1.604 mike 1768: table body">in table body</a>" and jump to the step marked <i title="">end</i>.</li>
1.1 mike 1769:
1770: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1.604 mike 1771: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>" and jump to
1772: the step marked <i title="">end</i>.</li>
1.1 mike 1773:
1774: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1775: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>" and
1.604 mike 1776: jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1777: case</a>)</li>
1.1 mike 1778:
1779: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1.604 mike 1780: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" and jump to the
1781: step marked <i title="">end</i>.</li>
1.1 mike 1782:
1.159 mike 1783: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.604 mike 1784: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" ("<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>"! <em> not "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>"</em>!) and jump to
1785: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1786: case</a>)</li> <!-- This is only here for now in case people
1787: think that the spec accidentally omitted it and try to "fix"
1788: it. Note that noscript-in-head is also handled this way. This is
1789: all intentional. The only thing it doesn't handle is the
1790: scripting-disabled fragment parsing case for a <head> element
1791: containing a <noscript> which itself contains something other than
1792: a <link> or a <style> element; you'd expect that to break out of
1793: the <noscript> but it doesn't. This is an edge case that doesn't
1794: affect the spec, since the algorithm for fragment parsing is only
1795: used for innerHTML/outerHTML/insertAdjacentHTML(), where we know
1796: scripting is enabled. -->
1.1 mike 1797:
1.159 mike 1798: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.604 mike 1799: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and jump to the
1800: step marked <i title="">end</i>.</li>
1.1 mike 1801:
1.5 mike 1802: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.604 mike 1803: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>" and jump to
1804: the step marked <i title="">end</i>. (<a href="#fragment-case">fragment
1805: case</a>)</li>
1.1 mike 1806:
1.159 mike 1807: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1808: then <!--: if the <span><code title="">head</code> element
1809: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1810: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1811: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1812: to "<span title="insertion mode: after head">after head</span>".-->
1.604 mike 1813: Then, <!-- in either case, --> jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li> <!-- if the
1814: head element pointer can ever be non-null when we're going through
1815: these steps, we'll need to uncomment out the commented-out bits -->
1816:
1817: <li>If <var title="">node</var> is an element from the <a href="#mathml-namespace">MathML
1818: namespace</a> or the <a href="#svg-namespace">SVG namespace</a>, then set the
1819: <var title="">foreign</var> flag to true.</li>
1.1 mike 1820:
1821: <li>If <var title="">last</var> is true, then switch the
1822: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1.604 mike 1823: body">in body</a>" and jump to the step marked <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1824:
1825: <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
1826: elements</a>.</li>
1827:
1.604 mike 1828: <li>Return to the step marked <i>loop</i>.</li>
1829:
1830: <li><i>End</i>: If <var title="">foreign</var> is true, switch the
1831: <a href="#secondary-insertion-mode">secondary insertion mode</a> to whatever the
1832: <a href="#insertion-mode">insertion mode</a> is set to, and switch the
1833: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1834: foreign content">in foreign content</a>".</li>
1.1 mike 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>,
1.589 mike 1896: <code><a href="forms.html#the-select-element">select</a></code>, <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1897: <code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>,
1898: <code><a href="semantics.html#the-title-element-0">title</a></code>, <code><a href="tabular-data.html#the-tr-element">tr</a></code>, <code><a href="semantics.html#the-ul-element">ul</a></code>,
1899: <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:
1.588 mike 3311: <p>If the next two characters are both U+002D HYPHEN-MINUS
3312: characters (-), consume those two characters, create a comment token
1.1 mike 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>
1.588 mike 3421: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3422: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 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>
1.588 mike 3444: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3445: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 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>
1.588 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>
1.588 mike 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>
1.608 ! mike 3518: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
! 3519: <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
1.1 mike 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>
1.608 ! mike 3642: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
! 3643: <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
1.444 mike 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>
1.608 ! mike 3815: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
! 3816: <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
1.444 mike 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:
1.588 mike 4119: <p>If the last character matched is not a U+003B SEMICOLON
4120: character (;), there is a <a href="#parse-error">parse error</a>.</p>
1.1 mike 4121:
4122: <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
4123: attribute</a>, and the last character matched is not a U+003B
1.588 mike 4124: SEMICOLON character (;), and the next character is in the range
4125: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0041 LATIN
4126: CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z, or U+0061 LATIN
4127: SMALL LETTER A to U+007A LATIN SMALL LETTER Z, then, for
4128: historical reasons, all the characters that were matched after the
4129: U+0026 AMPERSAND character (&) must be unconsumed, and nothing
4130: is returned.</p>
1.1 mike 4131:
4132: <p>Otherwise, return a character token for the character
4133: corresponding to the character reference name (as given by the
4134: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4135: table).</p>
4136:
4137: <div class="example">
4138:
4139: <p>If the markup contains <code title="">I'm &notit; I tell
4140: you</code>, the character reference is parsed as "not", as in,
4141: <code title="">I'm ¬it; I tell you</code>. But if the markup
4142: was <code title="">I'm &notin; I tell you</code>, the
4143: character reference would be parsed as "notin;", resulting in
4144: <code title="">I'm ∉ I tell you</code>.</p>
4145:
4146: </div>
4147:
4148: </dd>
4149:
1.266 mike 4150: </dl></div><div class="impl">
4151:
1.363 mike 4152: <!-- v2: One thing that this doesn't define is handling deeply
4153: nested documents. There are compatibility requirements around that:
4154: you can't throw away the elements altogether, consider Tux made only
4155: with opening <font> elements, one per character. Seems that the best
4156: thing to do is to close some formatting elements from the middle of
4157: the stack when you hit a limit, or something. -->
4158:
1.266 mike 4159: <h4 id="tree-construction"><span class="secno">9.2.5 </span><dfn>Tree construction</dfn></h4>
1.1 mike 4160:
4161: <p>The input to the tree construction stage is a sequence of tokens
4162: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4163: stage is associated with a DOM <code>Document</code> object when a
4164: parser is created. The "output" of this stage consists of
4165: dynamically modifying or extending that document's DOM tree.</p>
4166:
4167: <p>This specification does not define when an interactive user agent
4168: has to render the <code>Document</code> so that it is available to
4169: the user, or when it has to begin accepting user input.</p>
4170:
4171: <p>As each token is emitted from the tokenizer, the user agent must
4172: process the token according to the rules given in the section
4173: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4174:
4175: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4176: character</dfn> into a node, if that node has a child immediately
4177: before where the character is to be inserted, and that child is a
4178: <code>Text</code> node, and that <code>Text</code> node was the last
4179: node that the parser inserted into the document, then the character
4180: must be appended to that <code>Text</code> node; otherwise, a new
4181: <code>Text</code> node whose data is just that character must be
4182: inserted in the appropriate place.</p>
4183:
4184: <div class="example">
4185:
4186: <p>Here are some sample inputs to the parser and the corresponding
4187: number of text nodes that they result in, assuming a user agent
4188: that executes scripts.</p>
4189:
4190: <table><thead><tr><th>Input </th><th>Number of text nodes
4191: </th></tr></thead><tbody><tr><td><pre>A<script>
4192: var script = document.getElementsByTagName('script')[0];
4193: document.body.removeChild(script);
4194: </script>B</pre>
4195: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4196: </td></tr><tr><td><pre>A<script>
4197: var text = document.createTextNode('B');
4198: document.body.appendChild(text);
4199: </script>C</pre>
4200: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4201: </td></tr><tr><td><pre>A<script>
4202: var text = document.getElementsByTagName('script')[0].firstChild;
4203: text.data = 'B';
4204: document.body.appendChild(text);
4205: </script>B</pre>
4206: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4207: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4208: </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>.)
4209: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4210: </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>.)
4211: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4212: </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.)
4213: </td></tr></tbody></table></div>
4214:
4215: <p id="mutation-during-parsing">DOM mutation events must not fire
4216: for changes caused by the UA parsing the document. (Conceptually,
4217: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4218: 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 4219:
4220: <p class="note">Not all of the tag names mentioned below are
4221: conformant tag names in this specification; many are included to
4222: handle legacy content. They still form part of the algorithm that
4223: implementations are required to implement to claim conformance.</p>
4224:
4225: <p class="note">The algorithm described below places no limit on the
4226: depth of the DOM tree generated, or on the length of tag names,
4227: attribute names, attribute values, text nodes, etc. While
4228: implementors are encouraged to avoid arbitrary limits, it is
4229: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4230: concerns</a> will likely force user agents to impose nesting depth
4231: constraints.</p>
1.1 mike 4232:
4233:
4234: <h5 id="creating-and-inserting-elements"><span class="secno">9.2.5.1 </span>Creating and inserting elements</h5>
4235:
4236: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4237: element for the token">create an element for a token</dfn> in a
4238: particular namespace, the UA must create a node implementing the
4239: interface appropriate for the element type corresponding to the tag
4240: name of the token in the given namespace (as given in the
4241: specification that defines that element, e.g. for an <code><a href="text-level-semantics.html#the-a-element">a</a></code>
4242: element in the <a href="#html-namespace-0">HTML namespace</a>, this specification
4243: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4244: the tag name being the name of that element, with the node being in
4245: the given namespace, and with the attributes on the node being those
4246: given in the given token.</p>
4247:
4248: <p>The interface appropriate for an element in the <a href="#html-namespace-0">HTML
1.426 mike 4249: namespace</a> that is not defined in this specification (or
4250: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4251: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4252: interface is not defined by that namespace's specification must use
4253: the interface <code>Element</code>.</p>
4254:
4255: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4256: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4257: invoked once the attributes are set. (This initializes the element's
4258: <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
4259: attributes.)</p>
4260:
4261: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4262: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4263: for the token</a> in the <a href="#html-namespace-0">HTML namespace</a>, and then
4264: append this node to the <a href="#current-node">current node</a>, and push it onto
4265: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4266: <a href="#current-node">current node</a>.</p>
4267:
4268: <p>The steps below may also require that the UA insert an HTML
4269: element in a particular place, in which case the UA must follow the
4270: same steps except that it must insert or append the new node in the
4271: location specified instead of appending it to the <a href="#current-node">current
4272: node</a>. (This happens in particular during the parsing of
4273: tables with invalid content.)</p>
4274:
4275: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4276: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4277: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4278: 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
4279: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4280: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4281: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4282: inserting it wherever it is to be inserted.</p>
4283:
4284: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4285: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4286: for the token</a> in the given namespace, and then append this
4287: node to the <a href="#current-node">current node</a>, and push it onto the
4288: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4289: <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>
4290: whose value is not exactly the same as the element's namespace, that
4291: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4292: element has an <code title="">xmlns:xlink</code> attribute in the
4293: <a href="#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="#xlink-namespace">XLink
4294: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4295:
4296: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4297: attributes</dfn> for a token, then, if the token has an attribute
4298: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4299:
4300: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4301: attributes</dfn> for a token, then, for each attribute on the token
4302: whose attribute name is one of the ones in the first column of the
4303: following table, change the attribute's name to the name given in
4304: the corresponding cell in the second column. (This fixes the case of
4305: SVG attributes that are not all lowercase.)</p>
4306:
4307: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4308: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4309: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4310: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4311: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4312: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4313: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4314: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4315: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4316: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4317: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4318: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4319: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4320: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4321: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4322: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4323: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4324: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4325: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4326: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4327: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4328: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4329: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4330: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4331: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4332: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4333: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4334: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4335: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4336: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4337: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4338: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4339: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4340: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4341: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4342: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4343: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4344: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4345: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4346: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4347: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4348: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4349: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4350: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4351: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4352: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4353: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4354: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4355: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4356: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4357: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4358: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4359: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4360: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4361: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4362: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4363: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4364: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4365: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4366: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4367: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4368: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4369: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4370: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4371: foreign attributes</dfn> for a token, then, if any of the attributes
4372: on the token match the strings given in the first column of the
4373: following table, let the attribute be a namespaced attribute, with
4374: the prefix being the string given in the corresponding cell in the
4375: second column, the local name being the string given in the
4376: corresponding cell in the third column, and the namespace being the
4377: namespace given in the corresponding cell in the fourth
4378: column. (This fixes the use of namespaced attributes, in particular
4379: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4380: the <span>XML namespace</span></a>.)</p>
4381:
4382: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
4383: </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>
4384: </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>
4385: </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>
4386: </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>
4387: </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>
4388: </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>
4389: </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>
4390: </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 -->
4391: </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>
4392: </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>
4393: </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>
4394: </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 4395: </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 4396: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4397: following steps. These algorithms are always invoked in response to
4398: a start tag token.</p>
4399:
4400: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4401:
1.91 mike 4402: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4403: text element parsing algorithm</a>, switch the tokenizer to the
4404: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4405: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4406: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4407:
4408: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4409: <a href="#insertion-mode">insertion mode</a>.</p>
4410:
1.540 mike 4411: </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 4412:
4413: </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>
4414:
4415: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4416: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4417: <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 4418: <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
4419: <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
4420: <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
4421: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4422: elements</a>.</p>
4423:
4424: <p>If a step requires the UA to generate implied end tags but lists
4425: an element to exclude from the process, then the UA must perform the
4426: above steps as if that element was not in the above list.</p>
4427:
4428:
4429: <h5 id="foster-parenting"><span class="secno">9.2.5.3 </span>Foster parenting</h5>
4430:
4431: <p>Foster parenting happens when content is misnested in tables.</p>
4432:
4433: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4434: parent">foster parented</dfn>, the node <var title="">node</var>
4435: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4436:
4437: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4438: 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
4439: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4440: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4441: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4442: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4443: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4444: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4445: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4446: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4447: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4448: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4449: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4450: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4451:
4452: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4453: 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
4454: elements</a>, then <var title="">node</var> must be inserted
4455: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4456: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4457: element</a></i>; otherwise, <var title="">node</var> must be
4458: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4459:
4460:
4461:
4462: <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>
4463:
4464: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4465: mode: initial">initial</a>", tokens must be handled as follows:</p>
4466:
4467: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4468: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4469: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4470: <dd>
4471: <p>Ignore the token.</p>
4472: </dd>
4473:
4474: <dt>A comment token</dt>
4475: <dd>
4476: <p>Append a <code>Comment</code> node to the <code>Document</code>
4477: object with the <code title="">data</code> attribute set to the
4478: data given in the comment token.</p>
4479: </dd>
4480:
4481: <dt>A DOCTYPE token</dt>
4482: <dd>
4483:
4484: <p>If the DOCTYPE token's name is not a
4485: <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
4486: missing, or the token's system identifier is neither missing nor a
4487: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4488: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4489: conditions in the following list are matched, then there is a
4490: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4491: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4492: permitted DOCTYPE</dfn>.</p>
4493:
4494: <ul><!-- only things that trigger no-quirks mode and were valid in
4495: 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 4496: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4497: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and the
4498: token's system identifier is either missing or the
4499: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4500:
4501: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4502: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4503: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and the
4504: token's system identifier is either missing or the
4505: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4506:
4507: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4508: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4509: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
4510: and the token's system identifier is the
4511: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4512:
4513: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4514: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4515: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and the
4516: token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4517: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4518:
4519: </ul><p>Conformance checkers may, based on the values (including
4520: presence or lack thereof) of the DOCTYPE token's name, public
4521: identifier, or system identifier, switch to a conformance checking
4522: mode for another language (e.g. based on the DOCTYPE token a
4523: conformance checker could recognize that the document is an
1.183 mike 4524: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4525: checker.)</p>
4526:
4527: <p>Append a <code>DocumentType</code> node to the
4528: <code>Document</code> node, with the <code title="">name</code>
4529: attribute set to the name given in the DOCTYPE token, or the empty
4530: string if the name was missing; the <code title="">publicId</code>
4531: attribute set to the public identifier given in the DOCTYPE token,
4532: or the empty string if the public identifier was missing; the
4533: <code title="">systemId</code> attribute set to the system
4534: identifier given in the DOCTYPE token, or the empty string if the
4535: system identifier was missing; and the other attributes specific
4536: to <code>DocumentType</code> objects set to null and empty lists
4537: as appropriate. Associate the <code>DocumentType</code> node with
4538: the <code>Document</code> object so that it is returned as the
4539: value of the <code title="">doctype</code> attribute of the
4540: <code>Document</code> object.</p>
4541:
4542: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4543: one of the conditions in the following list, then set the
4544: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4545:
4546: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
4547: <li> The name is set to anything other than "<code title="">HTML</code>". </li>
4548: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4549: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4550: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4551: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4552: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4553: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4554: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4555: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4556: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4557: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4558: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4559: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4560: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4561: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4562: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4563: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4564: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4565: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4566: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4567: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4568: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4569: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4570: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4571: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4572: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4573: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4574: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4575: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4576: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4577: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4578: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4579: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4580: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4581: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4582: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4583: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4584: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4585: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4586: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4587: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4588: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4589: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4590: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4591: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4592: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4593: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4594: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4595: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4596: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4597: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4598: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4599: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4600: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4601: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4602: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4603: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4604: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4605: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4606: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4607: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4608: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4609: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4610: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4611: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4612: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4613: <li> The public identifier starts with: "<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 3.0//EN//</code>" </li>-->
4615: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4616: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4617: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4618: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4619: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4620: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4621: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4622: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4623: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4624: in the following list, then set the <code>Document</code> to
4625: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4626:
4627: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4628: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4629: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4630: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4631: </ul><p>The name, system identifier, and public identifier strings must
4632: be compared to the values given in the lists above in an
4633: <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> manner. A system identifier
4634: whose value is the empty string is not considered missing for the
4635: purposes of the conditions above.</p>
4636:
4637: <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>
4638:
4639: </dd>
4640:
4641: <dt>Anything else</dt>
4642: <dd>
4643:
4644: <p><a href="#parse-error">Parse error</a>.</p>
4645:
4646: <p>Set the <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
4647:
4648: <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
4649: reprocess the current token.</p>
4650:
4651: </dd>
4652:
4653: </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>
4654:
4655: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4656: mode: before html">before html</a>", tokens must be handled as follows:</p>
4657:
4658: <dl class="switch"><dt>A DOCTYPE token</dt>
4659: <dd>
4660: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4661: </dd>
4662:
4663: <dt>A comment token</dt>
4664: <dd>
4665: <p>Append a <code>Comment</code> node to the <code>Document</code>
4666: object with the <code title="">data</code> attribute set to the
4667: data given in the comment token.</p>
4668: </dd>
4669:
4670: <dt>A character token that is one of U+0009 CHARACTER
4671: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4672: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4673: <dd>
4674: <p>Ignore the token.</p>
4675: </dd>
4676:
4677: <dt>A start tag whose tag name is "html"</dt>
4678: <dd>
4679:
4680: <p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the <a href="#html-namespace-0">HTML
4681: namespace</a>. Append it to the <code>Document</code>
4682: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4683: elements</a>.</p>
4684:
4685: <p id="parser-appcache">If the <code>Document</code> is being
4686: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4687: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4688: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4689: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4690: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4691: 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 4692: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4693: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4694: removed; otherwise, if there is no such attribute or resolving it
4695: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4696: cache selection algorithm</a> with no manifest. The algorithm
4697: must be passed the <code>Document</code> object.</p>
1.1 mike 4698:
4699: <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>
4700:
4701: </dd>
4702:
1.334 mike 4703: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4704: <dd>
4705: <p>Act as described in the "anything else" entry below.</p>
4706: </dd>
4707:
4708: <dt>Any other end tag</dt>
4709: <dd>
4710: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4711: </dd>
4712:
1.1 mike 4713: <dt>Anything else</dt>
4714: <dd>
4715:
1.159 mike 4716: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4717: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4718: of open elements</a>.</p>
4719:
4720: <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
4721: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4722: algorithm</a> with no manifest, passing it the
4723: <code>Document</code> object.</p>
4724:
4725: <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
4726: reprocess the current token.</p>
4727:
4728: </dd>
4729:
4730: </dl><p>The root element can end up being removed from the
4731: <code>Document</code> object, e.g. by scripts; nothing in particular
4732: happens in such cases, content continues being appended to the nodes
4733: as described in the next section.</p>
4734:
4735:
4736: <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>
4737:
4738: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4739: mode: before head">before head</a>", tokens must be handled as follows:</p>
4740:
4741: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4742: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4743: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4744: <dd>
4745: <p>Ignore the token.</p> <!-- :-( -->
4746: </dd>
4747:
4748: <dt>A comment token</dt>
4749: <dd>
4750: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4751: node</a> with the <code title="">data</code> attribute set to
4752: the data given in the comment token.</p>
4753: </dd>
4754:
4755: <dt>A DOCTYPE token</dt>
4756: <dd>
4757: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4758: </dd>
4759:
4760: <dt>A start tag whose tag name is "html"</dt>
4761: <dd>
4762: <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
4763: mode</a>.</p>
4764: </dd>
4765:
4766: <dt>A start tag whose tag name is "head"</dt>
4767: <dd>
4768:
4769: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4770:
4771: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4772: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4773:
4774: <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>
4775:
4776: </dd>
4777:
4778: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4779: <dd>
4780:
4781: <p>Act as if a start tag token with the tag name "head" and no
4782: attributes had been seen, then reprocess the current token.</p>
4783:
4784: </dd>
4785:
4786: <dt>Any other end tag</dt>
4787: <dd>
4788:
4789: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4790:
4791: </dd>
4792:
4793: <dt>Anything else</dt>
4794: <dd>
4795:
4796: <p>Act as if a start tag token with the tag name "head" and no
4797: attributes had been seen, then reprocess the current
4798: token.</p>
4799:
4800: </dd>
4801:
4802: </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>
4803:
4804: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4805: mode: in head">in head</a>", tokens must be handled as follows:</p>
4806:
4807: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4808: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4809: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4810: <dd>
4811: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4812: the <a href="#current-node">current node</a>.</p>
4813: </dd>
4814:
4815: <dt>A comment token</dt>
4816: <dd>
4817: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4818: node</a> with the <code title="">data</code> attribute set to
4819: the data given in the comment token.</p>
4820: </dd>
4821:
4822: <dt>A DOCTYPE token</dt>
4823: <dd>
4824: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4825: </dd>
4826:
4827: <dt>A start tag whose tag name is "html"</dt>
4828: <dd>
4829: <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
4830: mode</a>.</p>
4831: </dd>
4832:
4833: <dt>A start tag whose tag name is one of: "base", "command",
4834: "link"</dt>
4835: <dd>
4836:
4837: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4838: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4839: elements</a>.</p>
4840:
4841: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4842: token's <i>self-closing flag</i></a>, if it is set.</p>
4843:
4844: </dd>
4845:
4846: <dt>A start tag whose tag name is "meta"</dt>
4847: <dd>
4848:
4849: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4850: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4851: elements</a>.</p>
4852:
4853: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4854: token's <i>self-closing flag</i></a>, if it is set.</p>
4855:
4856: <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
4857: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4858: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4859: encoding</a> to the encoding given by the value of the
4860: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4861:
4862: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4863: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4864: Content-Type</a> to its value returns a supported encoding
4865: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4866: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4867: encoding</a> to the encoding <var title="">encoding</var>.</p>
4868:
4869: </dd>
4870:
4871: <dt>A start tag whose tag name is "title"</dt>
4872: <dd>
4873: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
4874: </dd>
4875:
4876: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
4877: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
4878: <dd>
1.91 mike 4879: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 4880: </dd>
4881:
4882: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
4883: <dd>
4884:
4885: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4886:
4887: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
4888: noscript</a>".</p>
4889:
4890: </dd>
4891:
4892: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
4893: <dd>
4894:
4895: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
4896: <a href="#html-namespace-0">HTML namespace</a>.</p></li>
4897:
4898: <li>
4899:
4900: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
4901:
4902: <p class="note">This ensures that, if the script is external,
1.159 mike 4903: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 4904: calls in the script will execute in-line, instead of blowing the
4905: document away, as would happen in most other cases. It also
4906: prevents the script from executing until the end tag is
4907: seen.</p>
4908:
4909: </li>
4910:
4911: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
4912: fragment parsing algorithm</a>, then mark the
1.484 mike 4913: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
4914: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 4915:
4916: <li><p>Append the new element to the <a href="#current-node">current node</a>
4917: and push it onto the <a href="#stack-of-open-elements">stack of open
4918: elements</a>.</p></li>
4919:
1.541 mike 4920: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
4921: state</a>.</p></li>
1.1 mike 4922:
4923: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4924: <a href="#insertion-mode">insertion mode</a>.</p>
4925:
1.540 mike 4926: </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 4927:
4928: </ol></dd>
4929:
4930: <dt>An end tag whose tag name is "head"</dt>
4931: <dd>
4932:
4933: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 4934: <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 4935: elements</a>.</p>
4936:
4937: <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>
4938:
4939: </dd>
4940:
4941: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
4942: <dd>
4943: <p>Act as described in the "anything else" entry below.</p>
4944: </dd>
4945:
4946: <dt>A start tag whose tag name is "head"</dt>
4947: <dt>Any other end tag</dt>
4948: <dd>
4949: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4950: </dd>
4951:
4952: <dt>Anything else</dt>
4953: <dd>
4954:
4955: <!-- can't get here with an EOF and a fragment case -->
4956:
4957: <p>Act as if an end tag token with the tag name "head" had
4958: been seen, and reprocess the current token.</p>
4959:
4960: </dd>
4961:
4962: </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>
4963:
4964: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
4965: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
4966:
4967: <dl class="switch"><dt>A DOCTYPE token</dt>
4968: <dd>
4969: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4970: </dd>
4971:
4972: <dt>A start tag whose tag name is "html"</dt>
4973: <dd>
4974: <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
4975: mode</a>.</p>
4976: </dd>
4977:
4978: <dt>An end tag whose tag name is "noscript"</dt>
4979: <dd>
4980:
4981: <p>Pop the <a href="#current-node">current node</a> (which will be a
4982: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
4983: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 4984: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4985:
4986: <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>
4987:
4988: </dd>
4989:
4990: <dt>A character token that is one of U+0009 CHARACTER
4991: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4992: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4993: <dt>A comment token</dt>
4994: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
4995: <dd>
4996: <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
4997: mode</a>.</p>
4998: </dd>
4999:
5000: <dt>An end tag whose tag name is "br"</dt>
5001: <dd>
5002: <p>Act as described in the "anything else" entry below.</p>
5003: </dd>
5004:
5005: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5006: <dt>Any other end tag</dt>
5007: <dd>
5008: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5009: </dd>
5010:
5011: <dt>Anything else</dt>
5012: <dd>
5013:
5014: <!-- can't get here with an EOF and a fragment case -->
5015:
5016: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5017: name "noscript" had been seen and reprocess the current
5018: token.</p>
5019:
5020: </dd>
5021:
5022: </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>
5023:
5024: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5025: mode: after head">after head</a>", tokens must be handled as follows:</p>
5026:
5027: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5028: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5029: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5030: <dd>
5031: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5032: the <a href="#current-node">current node</a>.</p>
5033: </dd>
5034:
5035: <dt>A comment token</dt>
5036: <dd>
5037: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5038: node</a> with the <code title="">data</code> attribute set to
5039: the data given in the comment token.</p>
5040: </dd>
5041:
5042: <dt>A DOCTYPE token</dt>
5043: <dd>
5044: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5045: </dd>
5046:
5047: <dt>A start tag whose tag name is "html"</dt>
5048: <dd>
5049: <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
5050: mode</a>.</p>
5051: </dd>
5052:
5053: <dt>A start tag whose tag name is "body"</dt>
5054: <dd>
5055:
5056: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5057:
5058: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5059:
5060: <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>
5061:
5062: </dd>
5063:
5064: <dt>A start tag whose tag name is "frameset"</dt>
5065: <dd>
5066:
5067: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5068:
5069: <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>
5070:
5071: </dd>
5072:
5073: <dt>A start tag token whose tag name is one of: "base", "link",
5074: "meta", "noframes", "script", "style", "title"</dt>
5075: <dd>
5076:
5077: <p><a href="#parse-error">Parse error</a>.</p>
5078:
5079: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5080: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5081:
5082: <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
5083: mode</a>.</p>
5084:
5085: <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
5086: of open elements</a>.</p>
5087:
5088: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5089: pointer</a> cannot be null at this point.</p>
5090:
5091: </dd>
5092:
5093: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5094: <dd>
5095: <p>Act as described in the "anything else" entry below.</p>
5096: </dd>
5097:
5098: <dt>A start tag whose tag name is "head"</dt>
5099: <dt>Any other end tag</dt>
5100: <dd>
5101: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5102: </dd>
5103:
5104: <dt>Anything else</dt>
5105: <dd>
5106: <p>Act as if a start tag token with the tag name "body" and no
5107: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5108: flag</a> back to "ok", and then reprocess the current
5109: token.</p>
5110: </dd>
5111:
5112: </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>
5113:
5114: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5115: mode: in body">in body</a>", tokens must be handled as follows:</p>
5116:
5117: <dl class="switch"><dt>A character token</dt>
5118: <dd>
5119:
5120: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5121: any.</p>
5122:
5123: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5124: character</a> into the <a href="#current-node">current node</a>.</p>
5125:
5126: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5127: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5128: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5129: flag</a> to "not ok".</p>
5130:
5131: </dd>
5132:
5133: <dt>A comment token</dt>
5134: <dd>
5135: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5136: node</a> with the <code title="">data</code> attribute set to
5137: the data given in the comment token.</p>
5138: </dd>
5139:
5140: <dt>A DOCTYPE token</dt>
5141: <dd>
5142: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5143: </dd>
5144:
5145: <dt>A start tag whose tag name is "html"</dt>
5146: <dd>
5147: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5148: check to see if the attribute is already present on the top
5149: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5150: add the attribute and its corresponding value to that element.</p>
5151: </dd>
5152:
5153: <dt>A start tag token whose tag name is one of: "base", "command",
5154: "link", "meta", "noframes", "script", "style", "title"</dt>
5155: <dd>
5156: <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
5157: mode</a>.</p>
5158: </dd>
5159:
5160: <dt>A start tag whose tag name is "body"</dt>
5161: <dd>
5162:
5163: <p><a href="#parse-error">Parse error</a>.</p>
5164:
5165: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5166: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5167: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5168: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5169:
5170: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5171: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5172: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5173: elements</a>. If it is not, add the attribute and its
5174: corresponding value to that element.</p>
5175:
5176: </dd>
5177:
5178: <dt>A start tag whose tag name is "frameset"</dt>
5179: <dd>
5180:
5181: <p><a href="#parse-error">Parse error</a>.</p>
5182:
5183: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5184: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5185: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5186: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5187:
5188: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5189: the token.</p>
5190:
5191: <p>Otherwise, run the following steps:</p>
5192:
5193: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5194: elements</a> from its parent node, if it has one.</p></li>
5195:
5196: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5197: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5198: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5199:
5200: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5201: token.</p></li>
5202:
5203: <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>
5204:
5205: </li></ol></dd>
5206:
5207: <dt>An end-of-file token</dt>
5208: <dd>
5209:
5210: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5211: 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>
5212: 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 5213: <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
5214: <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
5215: <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 5216: <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 5217: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5218: fragment cases) -->
1.1 mike 5219:
5220: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5221:
5222: </dd>
5223:
5224: <dt>An end tag whose tag name is "body"</dt>
5225: <dd>
5226:
5227: <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
5228: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5229: token.</p>
5230:
5231: <!-- if we get here, the insertion mode here is forcibly "in
5232: body". -->
5233:
5234: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5235: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5236: <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
5237: <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
5238: <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
5239: <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
5240: <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
5241: <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 5242: <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
5243: <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 5244: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5245: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5246: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5247:
5248: <!-- If we ever change the frameset-ok flag to an insertion mode,
5249: then we'd have to somehow keep track of its state when we switch
5250: to after-body. -->
5251:
5252: <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>
5253:
5254: </dd>
5255:
5256: <dt>An end tag whose tag name is "html"</dt>
5257: <dd>
5258:
5259: <p>Act as if an end tag with tag name "body" had been seen,
5260: then, if that token wasn't ignored, reprocess the current
5261: token.</p>
5262:
5263: <p class="note">The fake end tag token here can only be
5264: ignored in the <a href="#fragment-case">fragment case</a>.</p>
5265:
5266: </dd>
5267:
5268: <!-- start tags for non-phrasing flow content elements -->
5269:
5270: <!-- the normal ones -->
5271: <dt>A start tag whose tag name is one of: "address", "article",
1.86 mike 5272: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5273: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5274: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5275: <dd>
5276:
5277: <!-- As of May 2008 this doesn't match any browser exactly, but is
5278: as close to what IE does as I can get without doing the non-tree
5279: DOM nonsense, and thus should actually afford better compatibility
5280: when implemented by the other browsers. -->
5281:
5282: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5283: an element in scope">has a <code>p</code> element in
5284: scope</a>, then act as if an end tag with the tag name
5285: "p" had been seen.</p>
5286:
5287: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5288:
5289: </dd>
5290:
5291: <!-- as normal, but close h1-h6 if it's the current node -->
5292: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5293: "h5", "h6"</dt>
5294: <dd>
5295:
5296: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5297: an element in scope">has a <code>p</code> element in
5298: scope</a>, then act as if an end tag with the tag name
5299: "p" had been seen.</p>
5300:
5301: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5302: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5303: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5304: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5305: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5306:
5307: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5308:
5309: </dd>
5310:
5311: <!-- as normal, but drops leading newline -->
5312: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5313: <dd>
5314:
5315: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5316: an element in scope">has a <code>p</code> element in
5317: scope</a>, then act as if an end tag with the tag name
5318: "p" had been seen.</p>
5319:
5320: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5321:
5322: <p>If the next token is a U+000A LINE FEED (LF) character
5323: token, then ignore that token and move on to the next
5324: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5325: ignored as an authoring convenience.)</p>
5326:
5327: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5328:
5329: </dd>
5330:
5331: <!-- as normal, but interacts with the form element pointer -->
5332: <dt>A start tag whose tag name is "form"</dt>
5333: <dd>
5334:
5335: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5336: pointer</a> is not null, then this is a <a href="#parse-error">parse
5337: error</a>; ignore the token.</p>
5338:
5339: <p>Otherwise:</p>
5340:
5341: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5342: an element in scope">has a <code>p</code> element in
5343: scope</a>, then act as if an end tag with the tag name
5344: "p" had been seen.</p>
5345:
5346: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5347: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5348: point to the element created.</p>
5349:
5350: </dd>
5351:
5352: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5353: <dt>A start tag whose tag name is "li"</dt>
5354: <dd>
5355:
5356: <p>Run the following algorithm:</p>
5357:
5358: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5359:
5360: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5361: node</a> (the bottommost node of the stack).</p></li>
5362:
1.578 mike 5363: <li><p><i>Loop</i>: If <var title="">node</var> is an
5364: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5365: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5366:
1.578 mike 5367: <li><p>If <var title="">node</var> is not in the
1.1 mike 5368: <a href="#formatting">formatting</a> category, and is not in the
5369: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5370: <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 5371: element, then jump to the last step.</p></li> <!-- an element
5372: <foo> is in this list if the following markup:
5373:
5374: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5375:
5376: ...results in the second <li> not being (in any way) a descendant
5377: of the first <li>, or if <foo> is a formatting element that gets
5378: reopened later. -->
5379:
5380: <li><p>Otherwise, set <var title="">node</var> to the previous
5381: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5382: the step labeled <i>loop</i>.</p></li>
5383:
5384: <li>
5385:
5386: <p>This is the last step.</p>
5387:
5388: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5389: an element in scope">has a <code>p</code> element in
5390: scope</a>, then act as if an end tag with the tag name
5391: "p" had been seen.</p>
5392:
5393: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5394: token.</p>
5395:
5396: </li>
5397:
5398: </ol></dd>
5399:
5400: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5401: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5402: <dd>
5403:
5404: <p>Run the following algorithm:</p>
5405:
5406: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5407:
5408: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5409: node</a> (the bottommost node of the stack).</p></li>
5410:
5411: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5412: <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
5413: tag with the same tag name as <var title="">node</var> had been
5414: seen, then jump to the last step.</p></li>
1.1 mike 5415:
5416: <li><p>If <var title="">node</var> is not in the
5417: <a href="#formatting">formatting</a> category, and is not in the
5418: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5419: <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 5420: element, then jump to the last step.</p></li> <!-- an element
5421: <foo> is in this list if the following markup:
5422:
5423: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5424:
5425: ...results in the second <dt> not being (in any way) a descendant
5426: of the first <dt>, or if <foo> is a formatting element that gets
5427: reopened later. -->
5428:
5429: <li><p>Otherwise, set <var title="">node</var> to the previous
5430: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5431: the step labeled <i>loop</i>.</p></li>
5432:
5433: <li>
5434:
5435: <p>This is the last step.</p>
5436:
5437: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5438: an element in scope">has a <code>p</code> element in
5439: scope</a>, then act as if an end tag with the tag name
5440: "p" had been seen.</p>
5441:
5442: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5443: token.</p>
5444:
5445: </li>
5446:
5447: </ol></dd>
5448:
5449: <!-- same as normal, but effectively ends parsing -->
5450: <dt>A start tag whose tag name is "plaintext"</dt>
5451: <dd>
5452:
5453: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5454: an element in scope">has a <code>p</code> element in
5455: scope</a>, then act as if an end tag with the tag name
5456: "p" had been seen.</p>
5457:
5458: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5459:
1.541 mike 5460: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5461:
1.541 mike 5462: <p class="note">Once a start tag with the tag name "plaintext" has
5463: been seen, that will be the last token ever seen other than
5464: character tokens (and the end-of-file token), because there is no
5465: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5466:
5467: </dd>
5468:
5469: <!-- end tags for non-phrasing flow content elements -->
5470:
5471: <!-- the normal ones -->
5472: <dt>An end tag whose tag name is one of: "address", "article",
1.86 mike 5473: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5474: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5475: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5476: "section", "ul"</dt>
1.1 mike 5477: <dd>
5478:
5479: <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>
5480: with the same tag name as that of the token, then this is a
5481: <a href="#parse-error">parse error</a>; ignore the token.</p>
5482:
5483: <p>Otherwise, run these steps:</p>
5484:
5485: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5486:
5487: <li><p>If the <a href="#current-node">current node</a> is not an element with
5488: the same tag name as that of the token, then this is a
5489: <a href="#parse-error">parse error</a>.</p></li>
5490:
5491: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5492: until an element with the same tag name as the token has been
5493: popped from the stack.</p></li>
5494:
5495: </ol></dd>
5496:
5497: <!-- removes the form element pointer instead of the matching node -->
5498: <dt>An end tag whose tag name is "form"</dt>
5499: <dd>
5500:
5501: <p>Let <var title="">node</var> be the element that the
5502: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5503: to.</p>
5504:
5505: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5506: to null.</p>
5507:
5508: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5509: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5510: scope">have <var title="">node</var> in scope</a>, then this is
5511: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5512:
5513: <p>Otherwise, run these steps:</p>
5514:
5515: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5516:
5517: <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
5518: error</a>.</p></li>
5519:
5520: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5521: open elements</a>.</p></li>
5522:
5523: </ol></dd>
5524:
5525: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5526: <dt>An end tag whose tag name is "p"</dt>
5527: <dd>
5528:
5529: <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>
5530: with the same tag name as that of the token, then this is a
5531: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5532: "p" had been seen, then reprocess the current token.</p>
5533:
5534: <p>Otherwise, run these steps:</p>
5535:
5536: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5537: for elements with the same tag name as the token.</p></li>
5538:
5539: <li><p>If the <a href="#current-node">current node</a> is not an element with
5540: the same tag name as that of the token, then this is a
5541: <a href="#parse-error">parse error</a>.</p></li>
5542:
5543: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5544: until an element with the same tag name as the token has been
5545: popped from the stack.</p></li>
5546:
5547: </ol></dd>
5548:
1.234 mike 5549: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5550: <dt>An end tag whose tag name is "li"</dt>
5551: <dd>
5552:
5553: <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
5554: item scope</a> with the same tag name as that of the token,
5555: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5556:
5557: <p>Otherwise, run these steps:</p>
5558:
5559: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5560: for elements with the same tag name as the token.</p></li>
5561:
5562: <li><p>If the <a href="#current-node">current node</a> is not an element with
5563: the same tag name as that of the token, then this is a
5564: <a href="#parse-error">parse error</a>.</p></li>
5565:
5566: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5567: until an element with the same tag name as the token has been
5568: popped from the stack.</p></li>
5569:
5570: </ol></dd>
5571:
1.1 mike 5572: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5573: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5574: <dd>
5575:
5576: <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>
5577: with the same tag name as that of the token, then this is a
5578: <a href="#parse-error">parse error</a>; ignore the token.</p>
5579:
5580: <p>Otherwise, run these steps:</p>
5581:
5582: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5583: for elements with the same tag name as the token.</p></li>
5584:
5585: <li><p>If the <a href="#current-node">current node</a> is not an element with
5586: the same tag name as that of the token, then this is a
5587: <a href="#parse-error">parse error</a>.</p></li>
5588:
5589: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5590: until an element with the same tag name as the token has been
5591: popped from the stack.</p></li>
5592:
5593: </ol></dd>
5594:
5595: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5596: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5597: <dd>
5598:
5599: <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>
5600: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5601: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5602:
5603: <p>Otherwise, run these steps:</p>
5604:
5605: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5606:
5607: <li><p>If the <a href="#current-node">current node</a> is not an element with
5608: the same tag name as that of the token, then this is a
5609: <a href="#parse-error">parse error</a>.</p></li>
5610:
5611: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5612: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5613: "h5", or "h6" has been popped from the stack.</p></li>
5614:
5615: </ol></dd>
5616:
5617: <dt>An end tag whose tag name is "sarcasm"</dt>
5618: <dd>
5619: <p>Take a deep breath, then act as described in the "any other end
5620: tag" entry below.</p>
5621: </dd>
5622:
5623: <!-- ADOPTION AGENCY ELEMENTS
5624: Mozilla-only: bdo blink del ins sub sup q
5625: Safari-only: code dfn kbd nobr samp var wbr
5626: Both: a b big em font i s small strike strong tt u -->
5627:
5628: <dt>A start tag whose tag name is "a"</dt>
5629: <dd>
5630:
5631: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5632: contains an element whose tag name is "a" between the end of
5633: the list and the last marker on the list (or the start of the
5634: list if there is no marker on the list), then this is a
5635: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5636: name "a" had been seen, then remove that element from the
5637: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5638: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5639: already remove it (it might not have if the element is not
5640: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5641: scope</a>).</p>
5642:
5643: <p class="example">In the non-conforming stream
5644: <code><a href="a">a<table><a href="b">b</table>x</code>,
5645: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5646: the second one, and the "x" character would be inside a link
5647: to "b", not to "a". This is despite the fact that the outer
5648: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5649: regular <code></a></code> end tag at the start of the table
5650: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5651:
5652: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5653: any.</p>
5654:
5655: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5656: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5657: elements</a>.</p>
5658:
5659: </dd>
5660:
5661: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5662: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5663: <dd>
5664:
5665: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5666: any.</p>
5667:
5668: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5669: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5670: elements</a>.</p>
5671:
5672: </dd>
5673:
5674: <dt>A start tag whose tag name is "nobr"</dt>
5675: <dd>
5676:
5677: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5678: any.</p>
5679:
5680: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5681: element in scope">has a <code>nobr</code> element in scope</a>,
5682: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5683: the tag name "nobr" had been seen, then once again
5684: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5685: any.</p>
5686:
5687: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5688: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5689: elements</a>.</p>
5690:
5691: </dd>
5692:
5693: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5694: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5695: "strike", "strong", "tt", "u"</dt>
5696: <dd>
5697:
5698: <p>Follow these steps:</p>
5699:
5700: <ol><li>
5701:
5702: <p>Let the <var title="">formatting element</var> be the
5703: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5704: elements</a> that:</p>
5705:
5706: <ul><li>is between the end of the list and the last scope
5707: marker in the list, if any, or the start of the list
5708: otherwise, and</li>
5709:
5710: <li>has the same tag name as the token.</li>
5711:
5712: </ul><p>If there is no such node, or, if that node is also in the
5713: <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
5714: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5715: steps.</p>
5716:
5717: <p>Otherwise, if there is such a node, but that node is not
5718: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5719: <a href="#parse-error">parse error</a>; remove the element from the list,
5720: and abort these steps.</p>
5721:
5722: <p>Otherwise, there is a <var title="">formatting
5723: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5724: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5725: element in scope">in scope</a>. If the element is not the
5726: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5727: error</a>. In any case, proceed with the algorithm as
5728: written in the following steps.</p>
5729:
5730: </li>
5731:
5732: <li><p>Let the <var title="">furthest block</var> be the
5733: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5734: is lower in the stack than the <var title="">formatting
5735: element</var>, and is not an element in the
5736: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5737: categories. There might not be one.</p></li>
5738:
5739: <li><p>If there is no <var title="">furthest block</var>,
5740: then the UA must skip the subsequent steps and instead just
5741: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5742: elements</a>, from the <a href="#current-node">current node</a> up to and
5743: including the <var title="">formatting element</var>, and
5744: remove the <var title="">formatting element</var> from the
5745: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5746:
5747: <li><p>Let the <var title="">common ancestor</var> be the element
5748: immediately above the <var title="">formatting element</var> in the
5749: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5750:
5751: <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
5752: formatting elements</a> relative to the elements on either
5753: side of it in the list.</p></li>
5754:
5755: <li>
5756:
5757: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5758: <var title="">furthest block</var>. Follow these steps:</p>
5759:
5760: <ol><li>Let <var title="">node</var> be the element immediately
5761: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5762: elements</a>, or if <var title="">node</var> is no longer in
5763: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5764: removed by the next step), the element that was immediately
5765: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5766: elements</a> before <var title="">node</var> was
5767: removed.</li>
1.1 mike 5768:
5769: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5770: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5771: elements</a> and then go back to step 1.</li>
5772:
5773: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5774: in the overall algorithm.</li>
5775:
5776: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5777: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5778: elements</a>.</li>
5779:
5780: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5781: element <var title="">node</var> was created, replace the entry
5782: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5783: formatting elements</a> with an entry for the new element,
5784: replace the entry for <var title="">node</var> in the
5785: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5786: element, and let <var title="">node</var> be the new
5787: element.</li>
5788:
5789: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5790: parent node if any.</li>
5791:
5792: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5793:
5794: <li>Return to step 1 of this inner set of steps.</li>
5795:
5796: </ol></li>
5797:
5798: <li>
5799:
5800: <p>If the <var title="">common ancestor</var> node is a
5801: <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>,
5802: <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,
5803: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5804: node</var> ended up being in the previous step, first removing
5805: it from its previous parent node if any.</p>
5806:
5807: <p>Otherwise, append whatever <var title="">last node</var>
5808: ended up being in the previous step to the <var title="">common
5809: ancestor</var> node, first removing it from its previous parent
5810: node if any.</p>
5811:
5812: </li>
5813:
5814: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5815: <var title="">formatting element</var> was created.</p></li>
5816:
5817: <li><p>Take all of the child nodes of the <var title="">furthest
5818: block</var> and append them to the element created in the last
5819: step.</p></li>
5820:
5821: <li><p>Append that new element to the <var title="">furthest
5822: block</var>.</p></li>
5823:
5824: <li><p>Remove the <var title="">formatting element</var> from the
5825: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5826: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5827: elements</a> at the position of the aforementioned
5828: bookmark.</p></li>
5829:
5830: <li><p>Remove the <var title="">formatting element</var> from the
5831: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5832: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5833: the position of the <var title="">furthest block</var> in that
5834: stack.</p></li>
5835:
5836: <li><p>Jump back to step 1 in this series of steps.</p></li>
5837:
1.334 mike 5838: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5839: to change parents, it has been dubbed the "adoption agency
5840: algorithm" (in contrast with other possible algorithms for dealing
5841: with misnested content, which included the "incest algorithm", the
1.1 mike 5842: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5843:
5844: </dd>
5845:
5846: <dt>A start tag whose tag name is "button"</dt>
5847: <dd>
5848:
5849: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5850: an element in scope">has a <code>button</code> element in
5851: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5852: act as if an end tag with the tag name "button" had been seen,
5853: then reprocess the token.</p>
5854:
5855: <p>Otherwise:</p>
5856:
5857: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5858: any.</p>
5859:
5860: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5861:
5862: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5863: formatting elements</a>.</p>
5864:
5865: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5866:
5867: </dd>
5868:
5869: <dt>A start tag token whose tag name is one of: "applet",
5870: "marquee", "object"</dt>
5871: <dd>
5872:
5873: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5874: any.</p>
5875:
5876: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5877:
5878: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5879: formatting elements</a>.</p>
5880:
5881: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5882:
5883: </dd>
5884:
5885: <dt>An end tag token whose tag name is one of: "applet", "button",
5886: "marquee", "object"</dt>
5887: <dd>
5888:
5889: <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>
5890: with the same tag name as that of the token, then this is a
5891: <a href="#parse-error">parse error</a>; ignore the token.</p>
5892:
5893: <p>Otherwise, run these steps:</p>
5894:
5895: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5896:
5897: <li><p>If the <a href="#current-node">current node</a> is not an element with
5898: the same tag name as that of the token, then this is a
5899: <a href="#parse-error">parse error</a>.</p></li>
5900:
5901: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5902: until an element with the same tag name as the token has been
5903: popped from the stack.</p></li>
5904:
5905: <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
5906: last marker</a>.</li>
5907:
5908: </ol></dd>
5909:
5910: <dt>A start tag whose tag name is "table"</dt>
5911: <dd>
5912:
5913: <p>If the <code>Document</code> is <em>not</em> set to
5914: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
5915: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
5916: <code>p</code> element in scope</a>, then act as if an end tag
5917: with the tag name "p" had been seen.</p> <!-- i hate myself (this
5918: quirk was basically caused by acid2; if i'd realised we could
5919: change the specs when i wrote acid2, we could have avoided having
5920: any parsing-mode quirks) -Hixie -->
5921:
5922: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5923:
5924: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5925:
5926: <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>
5927:
5928: </dd>
5929:
5930: <dt>A start tag whose tag name is one of: "area", "basefont",
1.589 mike 5931: "bgsound", "br", "embed", "img", "input", "keygen", "wbr"</dt>
1.1 mike 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> <!--
1.589 mike 5945: shouldn't really do it for <area>, <basefont>, and <bgsound> -->
1.1 mike 5946:
5947: </dd>
5948:
5949: <dt>A start tag whose tag name is one of: "param", "source"</dt>
5950: <dd>
5951:
5952: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5953: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5954: elements</a>.</p>
5955:
5956: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5957: token's <i>self-closing flag</i></a>, if it is set.</p>
5958:
5959: </dd>
5960:
5961: <dt>A start tag whose tag name is "hr"</dt>
5962: <dd>
5963:
5964: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5965: an element in scope">has a <code>p</code> element in
5966: scope</a>, then act as if an end tag with the tag name
5967: "p" had been seen.</p>
5968:
5969: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5970: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5971: elements</a>.</p>
5972:
5973: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5974: token's <i>self-closing flag</i></a>, if it is set.</p>
5975:
5976: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5977:
5978: </dd>
5979:
5980: <dt>A start tag whose tag name is "image"</dt>
5981: <dd>
5982: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
5983: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
5984: 2005-12, studies showed that around 0.2% of pages used the
5985: <image> element. -->
5986: </dd>
5987:
5988: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
5989: <dd>
5990:
5991: <p><a href="#parse-error">Parse error</a>.</p>
5992:
5993: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
5994: pointer</a> is not null, then ignore the token.</p>
5995:
5996: <p>Otherwise:</p>
5997:
5998: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5999: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6000: purely to reduce the number of errors (we don't care if they
6001: included the /, they're not supposed to be including the tag at
6002: all! -->
6003:
6004: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6005:
6006: <p>If the token has an attribute called "action", set the
6007: <code title="attr-form-action">action</code> attribute on the
6008: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6009: "action" attribute of the token.</p>
6010:
6011: <p>Act as if a start tag token with the tag name "hr" had been
6012: seen.</p>
6013:
6014: <p>Act as if a start tag token with the tag name "label" had been
6015: seen.</p>
6016:
6017: <p>Act as if a stream of character tokens had been seen (see below
6018: for what they should say).</p>
6019:
6020: <p>Act as if a start tag token with the tag name "input" had been
6021: seen, with all the attributes from the "isindex" token except
6022: "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
6023: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6024:
6025: <p>Act as if a stream of character tokens had been seen (see
6026: below for what they should say).</p>
6027:
6028: <p>Act as if an end tag token with the tag name "label" had been
6029: seen.</p>
6030:
6031: <p>Act as if a start tag token with the tag name "hr" had been
6032: seen.</p>
6033:
6034: <p>Act as if an end tag token with the tag name "form" had been
6035: seen.</p>
6036:
6037: <p>If the token has an attribute with the name "prompt", then the
6038: first stream of characters must be the same string as given in
6039: that attribute, and the second stream of characters must be
6040: empty. Otherwise, the two streams of character tokens together
6041: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6042: equivalent of "This is a searchable index. Insert your search
6043: keywords here: (input field)" in the user's preferred
6044: language.</p>
6045:
6046: </dd>
6047:
6048: <dt>A start tag whose tag name is "textarea"</dt>
6049: <dd>
6050:
6051: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6052: token.</p></li>
6053:
6054: <li><p>If the next token is a U+000A LINE FEED (LF) character
6055: token, then ignore that token and move on to the next
6056: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6057: ignored as an authoring convenience.)</p></li>
6058:
1.541 mike 6059: <li><p>Switch the tokenizer to the the <a href="#rcdata-state">RCDATA
6060: state</a>.</p></li>
1.1 mike 6061:
6062: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6063: current <a href="#insertion-mode">insertion mode</a>.</p>
6064:
6065: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6066: ok".</p></li>
6067:
1.540 mike 6068: <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 6069:
6070: </ol></dd>
6071:
6072: <dt>A start tag whose tag name is "xmp"</dt>
6073: <dd>
6074:
1.233 mike 6075: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6076: an element in scope">has a <code>p</code> element in
6077: scope</a>, then act as if an end tag with the tag name
6078: "p" had been seen.</p>
6079:
1.1 mike 6080: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6081: any.</p>
6082:
6083: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6084:
1.91 mike 6085: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6086:
6087: </dd>
6088:
6089: <dt>A start tag whose tag name is "iframe"</dt>
6090: <dd>
6091:
6092: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6093:
1.91 mike 6094: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6095:
6096: </dd>
6097:
6098: <dt>A start tag whose tag name is "noembed"</dt>
6099: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6100: <dd>
6101:
1.91 mike 6102: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6103:
6104: </dd>
6105:
6106: <dt>A start tag whose tag name is "select"</dt>
6107: <dd>
6108:
6109: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6110: any.</p>
6111:
6112: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6113:
6114: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6115:
6116: <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>",
6117: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6118: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6119: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6120: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6121: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6122: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6123: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6124:
6125: </dd>
6126:
6127: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6128: <dd>
6129:
6130: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6131: element in scope">has an <code>option</code> element in
6132: scope</a>, then act as if an end tag with the tag name "option"
6133: had been seen.</p>
6134:
6135: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6136: any.</p>
6137:
6138: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6139:
6140: </dd>
6141:
6142: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6143: <dd>
6144:
6145: <!-- the parsing rules for ruby really don't match IE much at all,
6146: but in practice the markup used is very simple and so strict
6147: compatibility with IE isn't required. For example, as defined
6148: here we get very, very different behaviour than IE for
6149: pathological cases like:
6150:
6151: <ruby><ol><li><p>a<rt>b
6152: <ruby>a<rt>b<p>c
6153:
6154: But in practice most ruby markup falls into these cases:
6155:
6156: <ruby>a<rt>b</ruby>
6157: <ruby>a<rp>b<rt>c<rp>d</ruby>
6158: <ruby>a<rt>b</rt></ruby>
6159: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6160:
6161: -->
6162:
6163: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6164: element in scope">has a <code>ruby</code> element in scope</a>,
6165: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6166: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6167: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6168: node</a> up to the node immediately before the bottommost
6169: <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
6170: elements</a>.</p>
6171:
6172: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6173:
6174: </dd>
6175:
6176: <dt>An end tag whose tag name is "br"</dt>
6177: <dd>
6178: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6179: the tag name "br" had been seen. Ignore the end tag token.</p>
6180: </dd>
6181:
6182: <dt>A start tag whose tag name is "math"</dt>
6183: <dd>
6184:
6185: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6186: any.</p>
6187:
6188: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6189: fixes the case of MathML attributes that are not all
6190: lowercase.)</p>
6191:
6192: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6193: fixes the use of namespaced attributes, in particular XLink.)</p>
6194:
6195: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6196: <a href="#mathml-namespace">MathML namespace</a>.</p>
6197:
6198: <!-- If we ever change the frameset-ok flag to an insertion mode,
6199: the following change would be implied, except we'd have to do it
6200: even in the face of a self-closed tag:
6201: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6202: -->
6203:
6204: <p>If the token has its <i>self-closing flag</i> set, pop the
6205: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6206: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6207: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6208:
6209: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6210: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6211: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6212: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6213: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6214: foreign content">in foreign content</a>".</p>
6215:
6216: </dd>
6217:
6218: <dt>A start tag whose tag name is "svg"</dt>
6219: <dd>
6220:
6221: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6222: any.</p>
6223:
6224: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6225: the case of SVG attributes that are not all lowercase.)</p>
6226:
6227: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6228: fixes the use of namespaced attributes, in particular XLink in
6229: SVG.)</p>
6230:
6231: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6232: <a href="#svg-namespace">SVG namespace</a>.</p>
6233:
6234: <!-- If we ever change the frameset-ok flag to an insertion mode,
6235: the following change would be implied, except we'd have to do it
6236: even in the face of a self-closed tag:
6237: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6238: -->
6239:
6240: <p>If the token has its <i>self-closing flag</i> set, pop the
6241: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6242: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6243: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6244:
6245: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6246: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6247: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6248: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6249: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6250: foreign content">in foreign content</a>".</p>
6251:
6252: </dd>
6253:
6254: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6255: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6256: "thead", "tr"</dt>
6257: <!--<dt>An end tag whose tag name is one of: "area", "base",
6258: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6259: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
1.589 mike 6260: "noframes", "param", "script", "select", "source", "style",
6261: "table", "textarea", "title", "wbr"</dt>-->
1.1 mike 6262: <!--<dt>An end tag whose tag name is "noscript", if the
6263: <span>scripting flag</span> is enabled</dt>-->
6264: <dd>
6265: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6266: <!-- end tags are commented out because since they can never end
6267: up on the stack anyway, the default end tag clause will
6268: automatically handle them. we don't want to have text in the spec
6269: that is just an optimisation, as that detracts from the spec
6270: itself -->
6271: </dd>
6272:
6273: <dt>Any other start tag</dt>
6274: <dd>
6275:
6276: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6277: any.</p>
6278:
6279: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6280:
6281: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6282: element.</p>
6283:
6284: </dd>
6285:
6286: <dt>Any other end tag</dt>
6287: <dd>
6288:
6289: <p>Run the following steps:</p>
6290:
6291: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6292: node</a> (the bottommost node of the stack).</p></li>
6293:
6294: <li><p>If <var title="">node</var> has the same tag name as
6295: the end tag token, then:</p>
6296:
6297: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6298:
6299: <li><p>If the tag name of the end tag token does not match
6300: the tag name of the <a href="#current-node">current node</a>, this is a
6301: <a href="#parse-error">parse error</a>.</p></li>
6302:
6303: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6304: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6305:
6306: </ol></li>
6307:
6308: <li><p>Otherwise, if <var title="">node</var> is in neither the
6309: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6310: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6311: token, and abort these steps.</p></li>
6312:
6313: <li><p>Set <var title="">node</var> to the previous entry in the
6314: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6315:
6316: <li><p>Return to step 2.</p></li>
6317:
6318: </ol></dd>
6319:
1.540 mike 6320: </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 6321:
6322: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6323: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6324:
6325: <dl class="switch"><dt>A character token</dt>
6326: <dd>
6327:
6328: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6329: character</a> into the <a href="#current-node">current node</a>.</p>
6330:
6331: </dd>
6332:
6333: <dt>An end-of-file token</dt>
6334: <dd>
6335:
6336: <!-- can't be the fragment case -->
6337: <p><a href="#parse-error">Parse error</a>.</p>
6338:
6339: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6340: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6341: started"</a>.</p>
1.1 mike 6342:
6343: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6344: elements</a>.</p>
6345:
6346: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6347: insertion mode</a> and reprocess the current token.</p>
6348:
6349: </dd>
6350:
6351: <dt>An end tag whose tag name is "script"</dt>
6352: <dd>
6353:
6354: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6355: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6356:
6357: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6358: elements</a>.</p>
6359:
6360: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6361: insertion mode</a>.</p>
6362:
6363: <p>Let the <var title="">old insertion point</var> have the
6364: same value as the current <a href="#insertion-point">insertion point</a>. Let
6365: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6366: input character</a>.</p>
6367:
6368: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6369: one.</p>
6370:
6371: <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 6372: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6373: to be inserted into the tokenizer</a>, and might cause the
6374: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6375:
6376: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6377: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6378: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6379:
6380: <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
6381: <a href="#insertion-point">insertion point</a> to its previous value. This value
6382: might be the "undefined" value.)</p>
6383:
6384: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6385: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6386:
6387: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6388:
6389: <dd>
6390:
6391: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6392: processing of any nested invocations of the tokenizer, yielding
6393: control back to the caller. (Tokenization will resume when the
6394: caller returns to the "outer" tree construction stage.)</p>
6395:
6396: <p class="note">The tree construction stage of this particular
6397: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6398: 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 6399:
6400: </dd>
6401:
6402:
6403: <dt>Otherwise:</dt>
6404:
6405: <dd>
6406:
6407: <p>Follow these steps:</p>
6408:
1.484 mike 6409: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6410: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6411: parsing-blocking script</a>.</p></li>
6412:
6413: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6414: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6415: 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>
6416:
6417: <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
6418: scripts</a> and <var title="">the script</var>'s
6419: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6420:
6421: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6422: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6423: <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
6424: run.</p></li>
1.1 mike 6425:
6426: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6427: <a href="#next-input-character">next input character</a>.</p></li>
6428:
6429: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6430: by one (it should be zero before this step, so this sets it to
6431: one).</p></li>
6432:
1.484 mike 6433: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6434: <var title="">the script</var>.</p></li>
1.1 mike 6435:
6436: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6437: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6438: zero (which it always should be at this point), then set the
6439: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6440:
6441: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6442: again.</p></li>
6443:
1.484 mike 6444: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6445: script</a>, then repeat these steps from step 1.</p></li>
6446:
6447: </ol></dd>
6448:
6449: </dl></dd>
6450:
6451: <dt>Any other end tag</dt>
6452: <dd>
6453:
6454: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6455: elements</a>.</p>
6456:
6457: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6458: insertion mode</a>.</p>
6459:
6460: </dd>
6461:
6462: </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>
6463:
6464: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6465: mode: in table">in table</a>", tokens must be handled as follows:</p>
6466:
6467: <dl class="switch"><dt>A character token</dt>
6468: <dd>
6469:
6470: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6471: be an empty list of tokens.</p>
6472:
6473: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6474: <a href="#insertion-mode">insertion mode</a>.</p>
6475:
6476: <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
6477: reprocess the token.</p>
6478:
6479: </dd>
6480:
6481: <dt>A comment token</dt>
6482: <dd>
6483: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6484: node</a> with the <code title="">data</code> attribute set to
6485: the data given in the comment token.</p>
6486: </dd>
6487:
6488: <dt>A DOCTYPE token</dt>
6489: <dd>
6490: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6491: </dd>
6492:
6493: <dt>A start tag whose tag name is "caption"</dt>
6494: <dd>
6495:
6496: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6497: below.)</p>
6498:
6499: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6500: formatting elements</a>.</p>
6501:
6502: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6503: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6504:
6505: </dd>
6506:
6507: <dt>A start tag whose tag name is "colgroup"</dt>
6508: <dd>
6509:
6510: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6511: below.)</p>
6512:
6513: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6514: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6515: group</a>".</p>
6516:
6517: </dd>
6518:
6519: <dt>A start tag whose tag name is "col"</dt>
6520: <dd>
6521: <p>Act as if a start tag token with the tag name "colgroup"
6522: had been seen, then reprocess the current token.</p>
6523: </dd>
6524:
6525: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6526: <dd>
6527:
6528: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6529: below.)</p>
6530:
6531: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6532: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6533: body</a>".</p>
6534:
6535: </dd>
6536:
6537: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6538: <dd>
6539: <p>Act as if a start tag token with the tag name "tbody" had
6540: been seen, then reprocess the current token.</p>
6541: </dd>
6542:
6543: <dt>A start tag whose tag name is "table"</dt>
6544: <dd>
6545:
6546: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6547: the tag name "table" had been seen, then, if that token wasn't
6548: ignored, reprocess the current token.</p>
6549:
6550: <p class="note">The fake end tag token here can only be
6551: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6552:
6553: </dd>
6554:
6555: <dt>An end tag whose tag name is "table"</dt>
6556: <dd>
6557:
6558: <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
6559: scope</a> with the same tag name as the token, this is a
6560: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6561: case</a>)</p>
6562:
6563: <p>Otherwise:</p>
6564:
6565: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6566: element has been popped from the stack.</p>
6567:
6568: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6569:
6570: </dd>
6571:
6572: <dt>An end tag whose tag name is one of: "body", "caption",
6573: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6574: "thead", "tr"</dt>
6575: <dd>
6576: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6577: </dd>
6578:
6579: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6580: <dd>
6581:
6582: <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
6583: mode</a>.</p>
6584:
6585: </dd>
6586:
6587: <dt>A start tag whose tag name is "input"</dt>
6588: <dd>
6589:
6590: <p>If the token does not have an attribute with the name "type",
6591: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6592: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6593: else" entry below.</p>
6594:
6595: <p>Otherwise:</p>
6596:
6597: <p><a href="#parse-error">Parse error</a>.</p>
6598:
6599: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6600:
6601: <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
6602: open elements</a>.</p>
6603:
6604: </dd>
6605:
1.603 mike 6606: <dt>A start tag whose tag name is "form"</dt>
6607: <dd>
6608:
6609: <p><a href="#parse-error">Parse error</a>.</p>
6610:
6611: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6612:
6613: <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
6614: open elements</a>.</p>
6615:
6616: </dd>
6617:
1.1 mike 6618: <dt>An end-of-file token</dt>
6619: <dd>
6620:
6621: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6622: <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 6623: error</a>.</p>
6624:
6625: <p class="note">It can only be the <a href="#current-node">current node</a> in
6626: the <a href="#fragment-case">fragment case</a>.</p>
6627:
6628: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6629:
6630: </dd>
6631:
6632: <dt>Anything else</dt>
6633: <dd>
6634:
6635: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6636: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6637: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6638: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6639: <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
6640: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6641: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6642:
6643: </dd>
6644:
6645: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6646: back to a table context</dfn>, it means that the UA must, while
6647: 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 6648: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6649: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6650:
6651: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6652: <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 6653: case</a>.</p>
6654:
6655:
6656:
6657: <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>
6658:
6659: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6660: mode: in table text">in table text</a>", tokens must be handled
6661: as follows:</p>
6662:
6663: <dl class="switch"><dt>A character token</dt>
6664: <dd>
6665:
6666: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6667: tokens</a></var> list.</p>
6668:
6669: </dd>
6670:
6671:
6672: <dt>Anything else</dt>
6673: <dd>
6674:
6675: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6676: tokens</a></var> list are character tokens that are not one of U+0009
6677: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6678: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6679: reprocess those character tokens using the rules given in the
6680: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6681: table">in table</a>" insertion mode.</p>
6682:
6683: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6684: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6685: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6686:
6687: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6688: insertion mode</a> and reprocess the token.</p>
6689:
6690: </dd>
6691:
6692: </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>
6693:
6694: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6695: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6696:
6697: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6698: <dd>
6699:
6700: <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
6701: scope</a> with the same tag name as the token, this is a
6702: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6703: case</a>)</p>
6704:
6705: <p>Otherwise:</p>
6706:
6707: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6708:
6709: <p>Now, if the <a href="#current-node">current node</a> is not a
6710: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6711: error</a>.</p>
6712:
6713: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6714: element has been popped from the stack.</p>
6715:
6716: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6717: the last marker</a>.</p>
6718:
6719: <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>
6720:
6721: </dd>
6722:
6723: <dt>A start tag whose tag name is one of: "caption", "col",
6724: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6725: <dt>An end tag whose tag name is "table"</dt>
6726: <dd>
6727:
6728: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6729: name "caption" had been seen, then, if that token wasn't
6730: ignored, reprocess the current token.</p>
6731:
6732: <p class="note">The fake end tag token here can only be
6733: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6734:
6735: </dd>
6736:
6737: <dt>An end tag whose tag name is one of: "body", "col",
6738: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6739: "tr"</dt>
6740: <dd>
6741: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6742: </dd>
6743:
6744: <dt>Anything else</dt>
6745: <dd>
6746: <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
6747: mode</a>.</p>
6748: </dd>
6749:
6750: </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>
6751:
6752: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6753: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6754:
6755: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6756: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6757: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6758: <dd>
6759: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6760: the <a href="#current-node">current node</a>.</p>
6761: </dd>
6762:
6763: <dt>A comment token</dt>
6764: <dd>
6765: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6766: node</a> with the <code title="">data</code> attribute set to
6767: the data given in the comment token.</p>
6768: </dd>
6769:
6770: <dt>A DOCTYPE token</dt>
6771: <dd>
6772: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6773: </dd>
6774:
6775: <dt>A start tag whose tag name is "html"</dt>
6776: <dd>
6777: <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
6778: mode</a>.</p>
6779: </dd>
6780:
6781: <dt>A start tag whose tag name is "col"</dt>
6782: <dd>
6783:
6784: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6785: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6786: elements</a>.</p>
6787:
6788: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6789: token's <i>self-closing flag</i></a>, if it is set.</p>
6790:
6791: </dd>
6792:
6793: <dt>An end tag whose tag name is "colgroup"</dt>
6794: <dd>
6795:
6796: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6797: <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 6798: error</a>; ignore the token. (<a href="#fragment-case">fragment
6799: case</a>)</p>
6800:
6801: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6802: 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
6803: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6804: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6805:
6806: </dd>
6807:
6808: <dt>An end tag whose tag name is "col"</dt>
6809: <dd>
6810: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6811: </dd>
6812:
6813: <dt>An end-of-file token</dt>
6814: <dd>
6815:
1.159 mike 6816: <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 6817: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6818: case</a>)</p>
6819:
6820: <p>Otherwise, act as described in the "anything else" entry
6821: below.</p>
6822:
6823: </dd>
6824:
6825: <dt>Anything else</dt>
6826: <dd>
6827:
6828: <p>Act as if an end tag with the tag name "colgroup" had been
6829: seen, and then, if that token wasn't ignored, reprocess the
6830: current token.</p>
6831:
6832: <p class="note">The fake end tag token here can only be
6833: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6834:
6835: </dd>
6836:
6837: </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>
6838:
6839: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6840: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6841:
6842: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6843: <dd>
6844:
6845: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6846: context</a>. (See below.)</p>
6847:
6848: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6849: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6850: in row">in row</a>".</p>
6851:
6852: </dd>
6853:
6854: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6855: <dd>
6856: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6857: the tag name "tr" had been seen, then reprocess the current
6858: token.</p>
6859: </dd>
6860:
6861: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6862: "thead"</dt>
6863: <dd>
6864:
6865: <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
6866: scope</a> with the same tag name as the token, this is a
6867: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6868:
6869: <p>Otherwise:</p>
6870:
6871: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6872: context</a>. (See below.)</p>
6873:
6874: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
6875: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
6876: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6877:
6878: </dd>
6879:
6880: <dt>A start tag whose tag name is one of: "caption", "col",
6881: "colgroup", "tbody", "tfoot", "thead"</dt>
6882: <dt>An end tag whose tag name is "table"</dt>
6883: <dd>
6884:
6885: <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
6886: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
6887: element in table scope</a>, this is a <a href="#parse-error">parse
6888: error</a>. Ignore the token. (<a href="#fragment-case">fragment
6889: case</a>)</p>
6890:
6891: <p>Otherwise:</p>
6892:
6893: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6894: context</a>. (See below.)</p>
6895:
6896: <p>Act as if an end tag with the same tag name as the
6897: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
6898: been seen, then reprocess the current token.</p>
6899:
6900: </dd>
6901:
6902: <dt>An end tag whose tag name is one of: "body", "caption",
6903: "col", "colgroup", "html", "td", "th", "tr"</dt>
6904: <dd>
6905: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6906: </dd>
6907:
6908: <dt>Anything else</dt>
6909: <dd>
6910: <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
6911: mode</a>.</p>
6912: </dd>
6913:
6914: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
6915: back to a table body context</dfn>, it means that the UA must,
6916: 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 6917: <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 6918: element, pop elements from the <a href="#stack-of-open-elements">stack of open
6919: elements</a>.</p>
6920:
6921: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6922: <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 6923: case</a>.</p>
6924:
6925:
6926: <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>
6927:
6928: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
6929: mode: in row">in row</a>", tokens must be handled as follows:</p>
6930:
6931: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
6932: <dd>
6933:
6934: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
6935: context</a>. (See below.)</p>
6936:
6937: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6938: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
6939: in cell">in cell</a>".</p>
6940:
6941: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6942: formatting elements</a>.</p>
6943:
6944: </dd>
6945:
6946: <dt>An end tag whose tag name is "tr"</dt>
6947: <dd>
6948:
6949: <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
6950: scope</a> with the same tag name as the token, this is a
6951: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6952: case</a>)</p>
6953:
6954: <p>Otherwise:</p>
6955:
6956: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
6957: context</a>. (See below.)</p>
6958:
6959: <p>Pop the <a href="#current-node">current node</a> (which will be a
6960: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
6961: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6962: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6963: body</a>".</p>
6964:
6965: </dd>
6966:
6967: <dt>A start tag whose tag name is one of: "caption", "col",
6968: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
6969: <dt>An end tag whose tag name is "table"</dt>
6970: <dd>
6971:
6972: <p>Act as if an end tag with the tag name "tr" had been seen,
6973: then, if that token wasn't ignored, reprocess the current
6974: token.</p>
6975:
6976: <p class="note">The fake end tag token here can only be
6977: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6978:
6979: </dd>
6980:
6981: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6982: "thead"</dt>
6983: <dd>
6984:
6985: <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
6986: scope</a> with the same tag name as the token, this is a
6987: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6988:
6989: <p>Otherwise, act as if an end tag with the tag name "tr" had
6990: been seen, then reprocess the current token.</p>
6991:
6992: </dd>
6993:
6994: <dt>An end tag whose tag name is one of: "body", "caption",
6995: "col", "colgroup", "html", "td", "th"</dt>
6996: <dd>
6997: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6998: </dd>
6999:
7000: <dt>Anything else</dt>
7001: <dd>
7002: <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
7003: mode</a>.</p>
7004: </dd>
7005:
7006: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
7007: back to a table row context</dfn>, it means that the UA must,
7008: 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 7009: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 7010: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7011:
7012: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7013: <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 7014: case</a>.</p>
7015:
7016:
7017: <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>
7018:
7019: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7020: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7021:
7022: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7023: <dd>
7024:
7025: <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
7026: scope</a> with the same tag name as that of the token, then
7027: this is a <a href="#parse-error">parse error</a> and the token must be
7028: ignored.</p>
7029:
7030: <p>Otherwise:</p>
7031:
7032: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7033:
7034: <p>Now, if the <a href="#current-node">current node</a> is not an element
7035: with the same tag name as the token, then this is a
7036: <a href="#parse-error">parse error</a>.</p>
7037:
7038: <p>Pop elements from this stack until an element with the same
7039: tag name as the token has been popped from the stack.</p>
7040:
7041: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7042: the last marker</a>.</p>
7043:
7044: <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
7045: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7046: this point.)</p>
7047:
7048: </dd>
7049:
7050: <dt>A start tag whose tag name is one of: "caption", "col",
7051: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7052: <dd>
7053:
7054: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7055: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7056: a <code>td</code> or <code>th</code> element in table
7057: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7058: the token. (<a href="#fragment-case">fragment case</a>)</p>
7059:
7060: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7061: reprocess the current token.</p>
7062:
7063: </dd>
7064:
7065: <dt>An end tag whose tag name is one of: "body", "caption",
7066: "col", "colgroup", "html"</dt>
7067: <dd>
7068: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7069: </dd>
7070:
7071: <dt>An end tag whose tag name is one of: "table", "tbody",
7072: "tfoot", "thead", "tr"</dt>
7073: <dd>
7074:
7075: <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
7076: scope</a> with the same tag name as that of the token
7077: (which can only happen for "tbody", "tfoot" and "thead", or,
7078: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7079: error</a> and the token must be ignored.</p>
7080:
7081: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7082: reprocess the current token.</p>
7083:
7084: </dd>
7085:
7086: <dt>Anything else</dt>
7087: <dd>
7088: <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
7089: mode</a>.</p>
7090: </dd>
7091:
7092: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7093: mean to run the following algorithm:</p>
7094:
7095: <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>
7096: element in table scope</a>, then act as if an end tag token
7097: with the tag name "td" had been seen.</p></li>
7098:
7099: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7100: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7101: <code>th</code> element in table scope</a>; act as if an end
7102: tag token with the tag name "th" had been seen.</p></li>
7103:
7104: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7105: 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
7106: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7107: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7108: cell</a>".</p>
7109:
7110:
7111: <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>
7112:
7113: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7114: mode: in select">in select</a>", tokens must be handled as follows:</p>
7115:
7116: <dl class="switch"><dt>A character token</dt>
7117: <dd>
7118: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7119: character</a> into the <a href="#current-node">current node</a>.</p>
7120: </dd>
7121:
7122: <dt>A comment token</dt>
7123: <dd>
7124: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7125: node</a> with the <code title="">data</code> attribute set to
7126: the data given in the comment token.</p>
7127: </dd>
7128:
7129: <dt>A DOCTYPE token</dt>
7130: <dd>
7131: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7132: </dd>
7133:
7134: <dt>A start tag whose tag name is "html"</dt>
7135: <dd>
7136: <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
7137: mode</a>.</p>
7138: </dd>
7139:
7140: <dt>A start tag whose tag name is "option"</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><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7148:
7149: </dd>
7150:
7151: <dt>A start tag whose tag name is "optgroup"</dt>
7152: <dd>
7153:
7154: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7155: element, act as if an end tag with the tag name "option" had
7156: been seen.</p>
7157:
7158: <p>If the <a href="#current-node">current node</a> is an
7159: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7160: tag name "optgroup" had been seen.</p>
7161:
7162: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7163:
7164: </dd>
7165:
7166: <dt>An end tag whose tag name is "optgroup"</dt>
7167: <dd>
7168:
7169: <p>First, if the <a href="#current-node">current node</a> is an
7170: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7171: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7172: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7173: the tag name "option" had been seen.</p>
7174:
7175: <p>If the <a href="#current-node">current node</a> is an
7176: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7177: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7178: <a href="#parse-error">parse error</a>; ignore the token.</p>
7179:
7180: </dd>
7181:
7182: <dt>An end tag whose tag name is "option"</dt>
7183: <dd>
7184:
7185: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7186: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7187: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7188: error</a>; ignore the token.</p>
7189:
7190: </dd>
7191:
7192: <dt>An end tag whose tag name is "select"</dt>
7193: <dd>
7194:
7195: <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
7196: scope</a> with the same tag name as the token, this is a
7197: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7198: case</a>)</p>
7199:
7200: <p>Otherwise:</p>
7201:
7202: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7203: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7204: stack.</p>
7205:
7206: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7207:
7208: </dd>
7209:
7210: <dt>A start tag whose tag name is "select"</dt>
7211: <dd>
7212:
7213: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7214: an end tag with the tag name "select" instead.</p>
7215:
7216: </dd>
7217:
7218: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7219: <dd>
1.73 mike 7220:
7221: <p><a href="#parse-error">Parse error</a>.</p>
7222:
1.124 mike 7223: <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>
7224: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7225: case</a>)</p>
1.73 mike 7226:
7227: <p>Otherwise, act as if an end tag with the tag name "select" had
7228: been seen, and reprocess the token.</p>
7229:
1.1 mike 7230: </dd>
7231:
7232: <dt>A start tag token whose tag name is "script"</dt>
7233: <dd>
7234: <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
7235: mode</a>.</p>
7236: </dd>
7237:
7238: <dt>An end-of-file token</dt>
7239: <dd>
7240:
7241: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7242: <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 7243: error</a>.</p>
7244:
7245: <p class="note">It can only be the <a href="#current-node">current node</a> in
7246: the <a href="#fragment-case">fragment case</a>.</p>
7247:
7248: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7249:
7250: </dd>
7251:
7252: <dt>Anything else</dt>
7253: <dd>
7254: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7255: </dd>
7256:
7257: </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>
7258:
7259: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7260: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7261:
7262: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7263: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7264: <dd>
7265: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7266: name "select" had been seen, and reprocess the token.</p>
7267: </dd>
7268:
7269: <dt>An end tag whose tag name is one of: "caption", "table",
7270: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7271: <dd>
7272:
7273: <p><a href="#parse-error">Parse error</a>.</p>
7274:
7275: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7276: element in table scope</a> with the same tag name as that
7277: of the token, then act as if an end tag with the tag name
7278: "select" had been seen, and reprocess the token. Otherwise,
7279: ignore the token.</p>
7280:
7281: </dd>
7282:
7283: <dt>Anything else</dt>
7284: <dd>
7285: <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
7286: mode</a>.</p>
7287: </dd>
7288:
1.168 mike 7289: </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 7290:
7291: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7292: mode: in foreign content">in foreign content</a>", tokens must be
7293: handled as follows:</p>
7294:
7295: <dl class="switch"><dt>A character token</dt>
7296: <dd>
7297:
7298: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7299: character</a> into the <a href="#current-node">current node</a>.</p>
7300:
7301: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7302: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7303: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7304: flag</a> to "not ok".</p>
7305:
7306: </dd>
7307:
7308: <dt>A comment token</dt>
7309: <dd>
7310: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7311: node</a> with the <code title="">data</code> attribute set to
7312: the data given in the comment token.</p>
7313: </dd>
7314:
7315: <dt>A DOCTYPE token</dt>
7316: <dd>
7317: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7318: </dd>
7319:
7320: <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>
7321: <dd>
7322:
7323: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7324: elements</a>.</p>
7325:
7326: <p>Let the <var title="">old insertion point</var> have the
7327: same value as the current <a href="#insertion-point">insertion point</a>. Let
7328: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7329: input character</a>.</p>
7330:
7331: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7332: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7333:
7334: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7335: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7336: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7337:
1.159 mike 7338: <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 7339: tokenizer</a>, the parser will not be executed reentrantly,
7340: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7341:
7342: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7343: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7344: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7345:
7346: <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
7347: <a href="#insertion-point">insertion point</a> to its previous value. This value
7348: might be the "undefined" value.)</p>
7349:
7350: </dd>
7351:
7352: <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>
7353: <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>
7354: <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>
7355: <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>
7356: <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>
7357: <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>
7358: <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>
7359: <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>
7360: <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>
7361: <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>
7362: <dt>An end tag</dt>
7363: <dd>
7364:
7365: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7366: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7367:
7368: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7369: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7370: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7371: element in scope">in scope</a> that has a namespace other than
7372: the <a href="#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7373: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7374:
7375: </dd>
7376:
7377: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7378: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7379: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7380: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7381: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7382: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7383: "li", "listing"<!-- so that pre and listing can be handled
7384: uniformly throughout the parser -->, "menu", "meta", "nobr",
7385: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7386: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7387: "span", "strong", "strike"<!-- so that s and strike can be handled
7388: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7389: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7390: list was determined empirically by studying over 6,000,000,000
1.422 mike 7391: pages that were specifically not XML pages -->
7392: <dt>A start tag whose tag name is "font", if the token has any
7393: attributes named "color", "face", or "size"</dt> <!-- the
7394: attributes here are required so that SVG <font> will go through as
7395: SVG but legacy <font>s won't -->
7396: <dt>An end-of-file token</dt> <dd>
1.1 mike 7397:
7398: <p><a href="#parse-error">Parse error</a>.</p>
7399:
7400: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
7401: the <a href="#current-node">current node</a> is in the <a href="#html-namespace-0">HTML
7402: namespace</a>.</p>
7403:
7404: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7405: insertion mode</a>, and reprocess the token.</p>
7406:
7407: </dd>
7408:
7409: <dt>Any other start tag</dt>
7410: <dd>
7411:
7412: <p>If the <a href="#current-node">current node</a> is an element in the
7413: <a href="#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
7414: attributes</a> for the token. (This fixes the case of MathML
7415: attributes that are not all lowercase.)</p>
7416:
7417: <p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7418: namespace</a>, and the token's tag name is one of the ones in
7419: the first column of the following table, change the tag name to
7420: the name given in the corresponding cell in the second
7421: column. (This fixes the case of SVG elements that are not all
7422: lowercase.)</p>
7423:
7424: <table><thead><tr><th> Tag name </th><th> Element name
7425: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7426: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7427: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7428: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7429: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7430: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7431: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7432: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7433: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7434: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7435: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7436: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7437: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7438: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7439: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7440: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7441: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7442: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7443: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7444: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7445: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7446: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7447: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7448: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7449: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7450: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7451: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7452: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7453: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7454: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7455: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7456: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7457: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7458: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7459: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7460: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7461: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
7462: </td></tr></tbody></table><p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7463: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7464: token. (This fixes the case of SVG attributes that are not all
7465: lowercase.)</p>
7466:
7467: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7468: fixes the use of namespaced attributes, in particular XLink in
7469: SVG.)</p>
7470:
7471: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7472: same namespace as the <a href="#current-node">current node</a>.</p>
7473:
7474: <p>If the token has its <i>self-closing flag</i> set, pop the
7475: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7476: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7477: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7478:
7479: </dd>
7480:
7481: </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>
7482:
7483: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7484: mode: after body">after body</a>", tokens must be handled as follows:</p>
7485:
7486: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7487: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7488: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7489: <dd>
7490: <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
7491: mode</a>.</p>
7492: </dd>
7493:
7494: <dt>A comment token</dt>
7495: <dd>
7496: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7497: 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 7498: element), with the <code title="">data</code> attribute set to
7499: the data given in the comment token.</p>
7500: </dd>
7501:
7502: <dt>A DOCTYPE token</dt>
7503: <dd>
7504: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7505: </dd>
7506:
7507: <dt>A start tag whose tag name is "html"</dt>
7508: <dd>
7509: <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
7510: mode</a>.</p>
7511: </dd>
7512:
7513: <dt>An end tag whose tag name is "html"</dt>
7514: <dd>
7515:
7516: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7517: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7518: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7519:
7520: <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
7521: body</a>".</p>
7522:
7523: </dd>
7524:
7525: <dt>An end-of-file token</dt>
7526: <dd>
7527: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7528: </dd>
7529:
7530: <dt>Anything else</dt>
7531: <dd>
7532:
7533: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7534: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7535: body</a>" and reprocess the token.</p>
7536:
7537: </dd>
7538:
7539: </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>
7540:
7541: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7542: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7543:
7544: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7545: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7546: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7547: <dd>
7548: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7549: the <a href="#current-node">current node</a>.</p>
7550: </dd>
7551:
7552: <dt>A comment token</dt>
7553: <dd>
7554: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7555: node</a> with the <code title="">data</code> attribute set to
7556: the data given in the comment token.</p>
7557: </dd>
7558:
7559: <dt>A DOCTYPE token</dt>
7560: <dd>
7561: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7562: </dd>
7563:
7564: <dt>A start tag whose tag name is "html"</dt>
7565: <dd>
7566: <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
7567: mode</a>.</p>
7568: </dd>
7569:
7570: <dt>A start tag whose tag name is "frameset"</dt>
7571: <dd>
7572: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7573: </dd>
7574:
7575: <dt>An end tag whose tag name is "frameset"</dt>
7576: <dd>
7577:
7578: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7579: <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 7580: error</a>; ignore the token. (<a href="#fragment-case">fragment
7581: case</a>)</p>
7582:
7583: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7584: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7585:
7586: <p>If the parser was <em>not</em> originally created as part
7587: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7588: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7589: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7590: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7591: frameset</a>".</p>
7592:
7593: </dd>
7594:
7595: <dt>A start tag whose tag name is "frame"</dt>
7596: <dd>
7597:
7598: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7599: Immediately pop the <a href="#current-node">current node</a> off the
7600: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7601:
7602: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7603: token's <i>self-closing flag</i></a>, if it is set.</p>
7604:
7605: </dd>
7606:
7607: <dt>A start tag whose tag name is "noframes"</dt>
7608: <dd>
7609: <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
7610: mode</a>.</p>
7611: </dd>
7612:
7613: <dt>An end-of-file token</dt>
7614: <dd>
7615:
7616: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7617: <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 7618: error</a>.</p>
7619:
7620: <p class="note">It can only be the <a href="#current-node">current node</a> in
7621: the <a href="#fragment-case">fragment case</a>.</p>
7622:
7623: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7624:
7625: </dd>
7626:
7627: <dt>Anything else</dt>
7628: <dd>
7629: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7630: </dd>
7631:
7632: </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>
7633:
7634: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7635: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7636:
7637: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7638: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7639: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7640: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7641: <dd>
7642: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7643: the <a href="#current-node">current node</a>.</p>
7644: </dd>
7645:
7646: <dt>A comment token</dt>
7647: <dd>
7648: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7649: node</a> with the <code title="">data</code> attribute set to
7650: the data given in the comment token.</p>
7651: </dd>
7652:
7653: <dt>A DOCTYPE token</dt>
7654: <dd>
7655: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7656: </dd>
7657:
7658: <dt>A start tag whose tag name is "html"</dt>
7659: <dd>
7660: <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
7661: mode</a>.</p>
7662: </dd>
7663:
7664: <dt>An end tag whose tag name is "html"</dt>
7665: <dd>
7666: <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
7667: frameset</a>".</p>
7668: </dd>
7669:
7670: <dt>A start tag whose tag name is "noframes"</dt>
7671: <dd>
7672: <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
7673: mode</a>.</p>
7674: </dd>
7675:
7676: <dt>An end-of-file token</dt>
7677: <dd>
7678: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7679: </dd>
7680:
7681: <dt>Anything else</dt>
7682: <dd>
7683: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7684: </dd>
7685:
1.336 mike 7686: </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 7687:
7688: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7689: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7690:
7691: <dl class="switch"><dt>A comment token</dt>
7692: <dd>
7693: <p>Append a <code>Comment</code> node to the <code>Document</code>
7694: object with the <code title="">data</code> attribute set to the
7695: data given in the comment token.</p>
7696: </dd>
7697:
7698: <dt>A DOCTYPE token</dt>
7699: <dt>A character token that is one of U+0009 CHARACTER
7700: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7701: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7702: <dt>A start tag whose tag name is "html"</dt>
7703: <dd>
7704: <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
7705: mode</a>.</p>
7706: </dd>
7707:
7708: <dt>An end-of-file token</dt>
7709: <dd>
7710: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7711: </dd>
7712:
7713: <dt>Anything else</dt>
7714: <dd>
7715: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7716: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7717: reprocess the token.</p>
7718: </dd>
7719:
7720: </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>
7721:
7722: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7723: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7724:
7725: <dl class="switch"><dt>A comment token</dt>
7726: <dd>
7727: <p>Append a <code>Comment</code> node to the <code>Document</code>
7728: object with the <code title="">data</code> attribute set to the
7729: data given in the comment token.</p>
7730: </dd>
7731:
7732: <dt>A DOCTYPE token</dt>
7733: <dt>A character token that is one of U+0009 CHARACTER
7734: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7735: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7736: <dt>A start tag whose tag name is "html"</dt>
7737: <dd>
7738: <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
7739: mode</a>.</p>
7740: </dd>
7741:
7742: <dt>An end-of-file token</dt>
7743: <dd>
7744: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7745: </dd>
7746:
7747: <dt>A start tag whose tag name is "noframes"</dt>
7748: <dd>
7749: <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
7750: mode</a>.</p>
7751: </dd>
7752:
7753: <dt>Anything else</dt>
7754: <dd>
7755: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7756: </dd>
7757:
1.266 mike 7758: </dl></div><div class="impl">
7759:
7760: <h4 id="the-end"><span class="secno">9.2.6 </span>The end</h4>
1.1 mike 7761:
7762: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7763: the document, the user agent must run the following steps:</p>
1.1 mike 7764:
1.484 mike 7765: <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
7766: "interactive" <!-- this also synchronously fires an event --> and
7767: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7768:
7769: <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
7770: document has finished parsing</a> is not empty, run these
7771: substeps:</p>
7772:
7773: <ol><li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the first
7774: <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
7775: execute when the document has finished parsing</a> has its
7776: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7777: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7778: blocking scripts</a>.</p></li>
7779:
7780: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7781: 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
7782: execute when the document has finished parsing</a>.</p></li>
7783:
7784: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7785: <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
7786: finished parsing</a> (i.e. shift out the first entry in the
7787: list).</p></li>
7788:
7789: <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
7790: document has finished parsing</a> is still not empty, repeat
7791: these substeps again from substep 1.</p>
7792:
7793: </li></ol></li>
7794:
7795: <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
7796: scripts that will execute as soon as possible</a> is
7797: empty.</p></li>
7798:
7799: <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
7800: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7801: <code>Document</code>.</p></li>
7802:
7803: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
7804: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7805: the <code>Document</code>.</p></li>
7806:
7807: <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
7808: readiness</a> to "complete". <!-- this also fires an event
7809: synchronously during the task --></p></li>
1.1 mike 7810:
1.484 mike 7811: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.1 mike 7812: 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 7813: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7814: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7815: its <code title="dom-event-target">target</code> set to the
7816: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7817: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7818:
1.569 mike 7819: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
7820: 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
7821: simple event</a> named <code title="event-pageshow">pageshow</code> at the
7822: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object.</p></li>
7823:
1.484 mike 7824: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.1 mike 7825: 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
7826: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7827: <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
7828: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7829: must bubble but not be cancelable and has no default
7830: action.</p></li>
1.1 mike 7831:
1.484 mike 7832: </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
7833: <a href="browsers.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7834:
1.266 mike 7835: </div><div class="impl">
1.1 mike 7836:
7837: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">9.2.7 </span>Coercing an HTML DOM into an infoset</h4>
7838:
7839: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7840: conjunction with an XML pipeline, it is possible that the
7841: constructed DOM is not compatible with the XML tool chain in certain
7842: subtle ways. For example, an XML toolchain might not be able to
7843: represent attributes with the name <code title="">xmlns</code>,
7844: since they conflict with the Namespaces in XML syntax. There is also
7845: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7846: included in the DOM itself. This section specifies some rules for
7847: handling these issues.</p>
7848:
7849: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7850: drop DOCTYPEs altogether.</p>
7851:
7852: <p>If the XML API doesn't support attributes in no namespace that
7853: are named "<code title="">xmlns</code>", attributes whose names
7854: start with "<code title="">xmlns:</code>", or attributes in the
7855: <a href="#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
7856: attributes.</p>
7857:
7858: <p>The tool may annotate the output with any namespace declarations
7859: required for proper operation.</p>
7860:
7861: <p>If the XML API being used restricts the allowable characters in
7862: the local names of elements and attributes, then the tool may map
7863: all element and attribute local names that the API wouldn't support
7864: to a set of names that <em>are</em> allowed, by replacing any
7865: character that isn't supported with the uppercase letter U and the
7866: six digits of the character's Unicode code point when expressed in
7867: hexadecimal, using digits 0-9 and capital letters A-F as the
7868: symbols, in increasing numeric order.</p>
7869:
7870: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
7871: parser</a>, though it is neither a legal HTML element name nor a
7872: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
7873: element name (though it's still not legal in HTML by any means).</p>
7874:
7875: <p class="example">As another example, consider the attribute
7876: <code>xlink:href</code>. Used on a MathML element, it becomes, after
7877: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
7878: attribute with a prefix "<code title="">xlink</code>" and a local
7879: name "<code title="">href</code>". However, used on an HTML element,
7880: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
7881: might not be accepted by an XML API. It could thus get converted,
7882: becoming "<code title="">xlinkU00003Ahref</code>".</p>
7883:
7884: <p class="note">The resulting names from this conversion
7885: conveniently can't clash with any attribute generated by the
7886: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
7887: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
7888: algorithm's table.</p>
7889:
7890: <p>If the XML API restricts comments from having two consecutive
7891: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
7892: U+0020 SPACE character between any such offending characters.</p>
7893:
7894: <p>If the XML API restricts comments from ending in a
7895: U+002D HYPHEN-MINUS character (-), the tool may insert a single
7896: U+0020 SPACE character at the end of such comments.</p>
7897:
7898: <p>If the XML API restricts allowed characters in character data,
1.439 mike 7899: attribute values, or comments, the tool may replace any U+000C FORM
7900: FEED (FF) character with a U+0020 SPACE character, and any other
7901: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 7902:
7903: <p>If the tool has no way to convey out-of-band information, then
7904: the tool may drop the following information:</p>
7905:
7906: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
7907: <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>
7908:
7909: <li>The association between form controls and forms that aren't
7910: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
7911: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
7912:
7913: </ul><p class="note">The mutations allowed by this section apply
7914: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
7915: applied. For example, a <code title=""><a::></code> start tag
7916: will be closed by a <code title=""></a::></code> end tag, and
7917: never by a <code title=""></aU00003AU00003A></code> end tag, even
7918: if the user agent is using the rules above to then generate an
7919: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
7920:
1.266 mike 7921: </div><div class="impl">
1.1 mike 7922:
1.35 mike 7923: <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 7924:
7925: <p><i>This section is non-normative.</i></p>
7926:
7927: <p>This section examines some erroneous markup and discusses how
7928: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
7929:
7930:
7931: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">9.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
7932:
7933: <p><i>This section is non-normative.</i></p>
7934:
7935: <p>The most-often discussed example of erroneous markup is as
7936: follows:</p>
7937:
7938: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
7939:
7940: <p>The parsing of this markup is straightforward up to the "3". At
7941: this point, the DOM looks like this:</p>
7942:
1.159 mike 7943: <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
7944: 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 7945: <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
7946: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
7947: <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>
7948:
7949: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
7950: invoked. This is a simple case, in that the <var title="">formatting
7951: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
7952: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7953: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7954: <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 7955: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
7956: DOM tree is unmodified at this point.</p>
7957:
7958: <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
7959: the active formatting elements</a>, in this case just the
7960: <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
7961: for the "4" text node. After the end tag token for the "i" is also
7962: received, and the "5" text node is inserted, the DOM looks as
7963: follows:</p>
7964:
1.159 mike 7965: <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 7966:
7967: <p><i>This section is non-normative.</i></p>
7968:
7969: <p>A case similar to the previous one is the following:</p>
7970:
7971: <pre><b>1<p>2</b>3</p></pre>
7972:
7973: <p>Up to the "2" the parsing here is straightforward:</p>
7974:
1.159 mike 7975: <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 7976: "b" is parsed.</p>
7977:
7978: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7979: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7980: <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 7981: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
7982: <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>
7983:
7984: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
7985: in the previous example. However, in this case, there <em>is</em> a
7986: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
7987: this time the adoption agency algorithm isn't skipped over.</p>
7988:
1.159 mike 7989: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 7990: element. A conceptual "bookmark" marks the position of the
7991: <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
7992: elements</a>, but since that list has only one element in it,
7993: it won't have much effect.</p>
7994:
7995: <p>As the algorithm progresses, <var title="">node</var> ends up set
7996: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
7997: node</var> ends up set to the <var title="">furthest block</var>
7998: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
7999:
8000: <p>The <var title="">last node</var> gets appended (moved) to the
8001: <var title="">common ancestor</var>, so that the DOM looks like:</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="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 8004: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
8005:
1.159 mike 8006: <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 8007: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
8008:
1.159 mike 8009: <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 8010: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8011: elements</a>, so that when the "3" is parsed, it is appended to
8012: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8013:
1.159 mike 8014: <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 8015:
8016: <p><i>This section is non-normative.</i></p>
8017:
8018: <p>Error handling in tables is, for historical reasons, especially
8019: strange. For example, consider the following markup:</p>
8020:
8021: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8022:
8023: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8024: directly inside a table like that, and the parser handles this case
8025: 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
8026: examining the DOM tree as it stands just after the
8027: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8028:
1.159 mike 8029: <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 8030: tag has been seen:</p>
8031:
1.159 mike 8032: <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
8033: 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 8034: <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
8035: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8036: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8037: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8038: table">in table</a>".</p>
8039:
8040: <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
8041: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8042: 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
8043: then handled in a rather straight-forward manner, taking the parser
8044: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8045: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8046: row</a>" insertion modes, after which the DOM looks as
8047: follows:</p>
8048:
1.159 mike 8049: <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
8050: 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 8051: <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
8052: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8053: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8054: mode: in row">in row</a>".</p>
8055:
8056: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8057: <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
8058: 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
8059: mode</a>).</p>
8060:
1.159 mike 8061: <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 8062: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8063: node:</p>
8064:
1.159 mike 8065: <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 8066: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8067: 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 8068: 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
8069: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8070: marker having been removed by the "td" end tag token); and the
8071: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8072: table body">in table body</a>".</p>
8073:
8074: <p>Thus it is that the "bbb" character tokens are found. These
8075: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8076: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8077: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8078: body">in table body</a>"). The character tokens are collected,
8079: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8080: seen, they are processed as a group. Since they are not all spaces,
8081: 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,
8082: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8083: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8084: parent">foster parenting</a>.</p>
8085:
8086: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8087: active formatting elements are reconstructed</a>, a
8088: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8089: parent">foster parented</a>, and then the "bbb" text node is
8090: appended to it:</p>
8091:
1.159 mike 8092: <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
8093: <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 8094: <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
8095: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8096: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8097: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8098: mode: in table body">in table body</a>".</p>
8099:
8100: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8101: character">space characters</a> instead of "bbb", then those
8102: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8103: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8104:
8105: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8106: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8107: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8108: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8109: elements</a>, so the "ccc" character tokens after the table
8110: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8111: time after the table:</p>
8112:
1.159 mike 8113: <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 8114:
8115: <p><i>This section is non-normative.</i></p>
8116:
8117: <p>Consider the following markup, which for this example we will
8118: 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 8119: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8120: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8121:
8122: <pre><div id=a>
8123: <script>
8124: var div = document.getElementById('a');
8125: parent.document.body.appendChild(div);
8126: </script>
8127: <script>
8128: alert(document.URL);
8129: </script>
8130: </div>
8131: <script>
8132: alert(document.URL);
8133: </script></pre>
8134:
8135: <p>Up to the first "script" end tag, before the script is parsed,
8136: the result is relatively straightforward:</p>
8137:
1.306 mike 8138: <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="">
8139: </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 8140: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8141:
1.159 mike 8142: <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 8143: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8144: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8145: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8146:
8147: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8148: is inserted <em>into the outer <code>Document</code>
8149: object</em>.</p>
8150:
8151: <p>This also means that the <a href="browsers.html#script-s-global-object">script's global object</a> is
8152: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8153: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8154: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8155:
8156: <p class="note">This isn't a security problem since the script that
1.306 mike 8157: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.1 mike 8158: only do so because they have the two <code>Document</code> object
1.159 mike 8159: have the same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8160:
8161: <p>Thus, the first alert says "http://example.com/outer".</p>
8162:
1.306 mike 8163: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8164: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8165: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8166:
1.159 mike 8167: <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 8168:
8169:
8170:
1.215 mike 8171: <h3 id="namespaces"><span class="secno">9.3 </span>Namespaces</h3>
1.1 mike 8172:
8173: <p>The <dfn id="html-namespace-0">HTML namespace</dfn> is: <code>http://www.w3.org/1999/xhtml</code></p>
8174:
8175: <p>The <dfn id="mathml-namespace">MathML namespace</dfn> is: <code>http://www.w3.org/1998/Math/MathML</code></p>
8176:
8177: <p>The <dfn id="svg-namespace">SVG namespace</dfn> is: <code>http://www.w3.org/2000/svg</code></p>
8178:
8179: <p>The <dfn id="xlink-namespace">XLink namespace</dfn> is: <code>http://www.w3.org/1999/xlink</code></p>
8180:
8181: <p>The <dfn id="xml-namespace">XML namespace</dfn> is: <code>http://www.w3.org/XML/1998/namespace</code></p>
8182:
8183: <p>The <dfn id="xmlns-namespace">XMLNS namespace</dfn> is: <code>http://www.w3.org/2000/xmlns/</code></p>
8184:
8185: <hr><p>Data mining tools and other user agents that perform operations
1.605 mike 8186: on <code><a href="iana.html#text-html">text/html</a></code> content without running scripts,
1.1 mike 8187: evaluating CSS or XPath expressions, or otherwise exposing the
8188: resulting DOM to arbitrary content, may "support namespaces" by just
8189: asserting that their DOM node analogues are in certain namespaces,
8190: without actually exposing the above strings.</p>
8191:
8192:
8193:
8194:
8195: <h3 id="serializing-html-fragments"><span class="secno">9.4 </span>Serializing HTML fragments</h3>
8196:
8197: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8198: algorithm</dfn>. The algorithm takes as input a DOM
8199: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8200: exception.</p>
8201:
8202: <p class="note">This algorithm serializes the <em>children</em> of
8203: the node being serialized, not the node itself.</p>
8204:
8205: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8206: the empty string.</p></li>
8207:
8208: <li>
8209:
8210: <p>For each child node of <var title="">the node</var>, in
8211: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8212:
8213: </p><ol><li><p>Let <var title="">current node</var> be the child node
8214: being processed.</p></li>
8215:
8216: <li>
8217:
8218: <p>Append the appropriate string from the following list to
8219: <var title="">s</var>:</p>
8220:
8221: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8222:
8223: <dd>
8224:
1.588 mike 8225: <p>Append a U+003C LESS-THAN SIGN character character (<),
8226: followed by the element's tag name. (For nodes created by the
8227: <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
1.1 mike 8228: lowercase.)</p>
8229:
8230: <p>For each attribute that the element has, append a U+0020
8231: SPACE character, the attribute's name (which, for attributes
8232: set by the <a href="#html-parser">HTML parser</a> or by <code title="">Element.setAttributeNode()</code> or <code title="">Element.setAttribute()</code>, will be lowercase), a
1.588 mike 8233: U+003D EQUALS SIGN character (=), a U+0022 QUOTATION MARK
8234: character ("), the attribute's value, <a href="#escapingString" title="escaping a string">escaped as described below</a> in
8235: <i>attribute mode</i>, and a second U+0022 QUOTATION MARK
8236: character (").</p>
1.1 mike 8237:
8238: <p>While the exact order of attributes is UA-defined, and may
8239: depend on factors such as the order that the attributes were
8240: given in the original markup, the sort order must be stable,
8241: such that consecutive invocations of this algorithm serialize an
8242: element's attributes in the same order.</p>
8243:
1.588 mike 8244: <p>Append a U+003E GREATER-THAN SIGN character (>).</p>
1.1 mike 8245:
8246: <p>If <var title="">current node</var> is an
1.5 mike 8247: <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 8248: <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 8249: <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>,
8250: <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>, <code><a href="forms.html#the-keygen-element">keygen</a></code>,
1.589 mike 8251: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>, or
8252: <code>wbr</code> element, then continue on to the next child
8253: node at this point.</p> <!-- also, i guess: image and isindex,
8254: but we don't list those because we don't consider those
8255: "elements", more "macros", and thus we should never serialize
8256: them -->
1.1 mike 8257:
8258: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8259: <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 8260: a U+000A LINE FEED (LF) character.</p>
8261:
8262: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8263: serialization algorithm</a> on the <var title="">current
8264: node</var> element (thus recursing into this algorithm for
1.588 mike 8265: that element), followed by a U+003C LESS-THAN SIGN character
8266: (<), a U+002F SOLIDUS character (/), the element's tag name
8267: again, and finally a U+003E GREATER-THAN SIGN character
8268: (>).</p>
1.1 mike 8269:
8270: </dd>
8271:
8272:
8273: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8274: node</dt>
8275:
8276: <dd>
8277:
1.19 mike 8278: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8279: <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 8280: <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 8281: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8282: if the parent of <var title="">current node</var> is
8283: <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
8284: node, then append the value of <var title="">current
8285: node</var>'s <code title="">data</code> IDL attribute
8286: literally.</p>
1.1 mike 8287:
8288: <p>Otherwise, append the value of <var title="">current
1.192 mike 8289: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8290: below</a>.</p>
8291:
8292: </dd>
8293:
8294:
8295: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8296:
8297: <dd>
8298:
8299: <p>Append the literal string <code><!--</code> (U+003C
8300: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8301: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8302: attribute, followed by the literal string <code>--></code>
8303: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8304: SIGN).</p>
8305:
8306: </dd>
8307:
8308:
8309: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8310:
8311: <dd>
8312:
8313: <p>Append the literal string <code><?</code> (U+003C
8314: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8315: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8316: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8317: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8318: character (>).</p>
1.1 mike 8319:
8320: </dd>
8321:
8322:
8323: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8324:
8325: <dd>
8326:
8327: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8328: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8329: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8330: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8331: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8332: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8333: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8334: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8335:
8336: </dd>
8337:
8338:
8339: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8340: occur as children of elements. If, despite this, they somehow do
8341: occur, this algorithm must raise an
8342: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8343:
8344: </li>
8345:
8346: </ol></li>
8347:
8348: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8349:
8350: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8351: purposes of the algorithm above) consists of replacing any
8352: occurrences of the "<code title="">&</code>" character by the
8353: string "<code title="">&amp;</code>", any occurrences of the
8354: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8355: 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
8356: 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>
8357:
8358: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8359: agent, and are therefore not covered in the algorithm above.</p>
8360:
8361: <p class="note">It is possible that the output of this algorithm, if
8362: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8363: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8364: element to which a <code title="">Comment</code> node has been
8365: appended is serialized and the output is then reparsed, the comment
8366: will end up being displayed in the text field. Similarly, if, as a
8367: result of DOM manipulation, an element contains a comment that
8368: contains the literal string "<code title="">--></code>", then
8369: when the result of serializing the element is parsed, the comment
8370: will be truncated at that point and the rest of the comment will be
8371: interpreted as markup. More examples would be making a
8372: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8373: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8374: 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
8375: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8376: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8377:
8378:
8379: <h3 id="parsing-html-fragments"><span class="secno">9.5 </span>Parsing HTML fragments</h3>
8380:
8381: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8382: algorithm</dfn>. The algorithm optionally takes as input an
8383: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8384: parser, as well as <var title="">input</var>, a string to parse, and
8385: returns a list of zero or more nodes.</p>
8386:
8387: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8388: in the parser section are parts that only occur if the parser was
8389: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8390: with such markings for informational purposes only; such markings
8391: have no normative weight. If it is possible for a condition
8392: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8393: parser wasn't created for the purposes of handling this algorithm,
8394: then that is an error in the specification.</p>
8395:
8396: <ol><li>
8397:
8398: <p>Create a new <code>Document</code> node, and mark it as being
8399: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8400:
8401: </li>
8402:
8403: <li>
8404:
8405: <p>If there is a <var title="">context</var> element, and the
8406: <code>Document</code> of the <var title="">context</var> element
8407: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8408: 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
8409: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8410: mode</a>, then let the <code>Document</code> be in
8411: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8412: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8413:
8414: </li>
8415:
8416: <li>
8417:
8418: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8419: the just created <code>Document</code> node.</p>
8420:
8421: </li>
8422:
8423: <li>
8424:
8425: <p>If there is a <var title="">context</var> element, run these
8426: substeps:</p>
8427:
8428: <ol><li>
8429:
1.541 mike 8430: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8431: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8432:
1.159 mike 8433: <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 8434: element</dt>
8435:
1.541 mike 8436: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8437:
8438:
8439: <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 8440: <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 8441: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8442:
1.541 mike 8443: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8444:
8445:
8446: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8447:
1.541 mike 8448: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8449: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8450: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8451:
8452:
1.42 mike 8453: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8454:
1.541 mike 8455: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8456: state</a>.</dd>
1.1 mike 8457:
8458:
8459: <dt>Otherwise</dt>
8460:
1.541 mike 8461: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8462:
8463: </dl></li>
8464:
8465: <li>
8466:
1.159 mike 8467: <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 8468: with no attributes.</p>
8469:
8470: </li>
8471:
8472: <li>
8473:
8474: <p>Append the element <var title="">root</var> to the
8475: <code>Document</code> node created above.</p>
8476:
8477: </li>
8478:
8479: <li>
8480:
8481: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8482: it contains just the single element <var title="">root</var>.</p>
8483:
8484: </li>
8485:
8486: <li>
8487:
8488: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8489: parser's insertion mode appropriately</a>.</p>
8490:
8491: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8492:
8493: </li>
8494:
8495: <li>
8496:
8497: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8498: to the nearest node to the <var title="">context</var> element
8499: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8500: ancestor chain, and including the element itself, if it is a
8501: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8502: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8503:
8504: </li>
8505:
8506: </ol></li>
8507:
8508: <li>
8509:
8510: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8511: parser</a> just created the <var title="">input</var>. The
8512: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8513: <i>irrelevant</i>.</p>
8514:
8515: </li>
8516:
8517: <li>
8518:
8519: <p>Start the parser and let it run until it has consumed all the
8520: characters just inserted into the input stream.</p>
8521:
8522: </li>
8523:
8524: <li>
8525:
8526: <p>If there is a <var title="">context</var> element, return the
8527: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8528: order</a>.</p>
8529:
8530: <p>Otherwise, return the children of the <code>Document</code>
8531: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8532:
8533: </li>
8534:
1.123 mike 8535: </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