Annotation of html5/spec/syntax.html, revision 1.565
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">
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1.1 mike 144:
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1.267 mike 169: </style><style type="text/css">
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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>
1.565 ! mike 227: </nav><p>This is revision 1.3366.</p>
1.11 mike 228:
1.1 mike 229:
1.123 mike 230: <h2 id="syntax"><span class="secno">9 </span><dfn>The HTML syntax</dfn></h2><p class="note">This section only describes the rules for
1.83 mike 231: <code><a href="iana-considerations.html#text-html">text/html</a></code> resources. Rules for XML resources are
1.1 mike 232: discussed in the section below entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
1.159 mike 233: syntax</a>".</p><h3 id="writing"><span class="secno">9.1 </span>Writing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p><div class="impl">
1.1 mike 234:
235: <p><i>This section only applies to documents, authoring tools, and
236: markup generators. In particular, it does not apply to conformance
237: checkers; conformance checkers must use the requirements given in
238: the next section ("parsing HTML documents").</i></p>
239:
1.123 mike 240: </div><p>Documents must consist of the following parts, in the given
241: order:</p><ol><li>Optionally, a single U+FEFF BYTE ORDER MARK (BOM) character.</li>
1.1 mike 242:
243: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
244: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
245:
246: <li>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a>.
247:
248: </li><li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
249: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
250:
1.159 mike 251: <li>The root element, in the form of an <code><a href="semantics.html#the-html-element-0">html</a></code> <a href="#syntax-elements" title="syntax-elements">element</a>.</li>
1.1 mike 252:
253: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
254: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
255:
256: </ol><p>The various types of content mentioned above are described in the
1.123 mike 257: next few sections.</p><p>In addition, there are some restrictions on how <a href="semantics.html#character-encoding-declaration" title="character encoding declaration">character encoding
1.1 mike 258: declarations</a> are to be serialized, as discussed in the
1.123 mike 259: section on that topic.</p><div class="note">
1.1 mike 260:
1.159 mike 261: <p>Space characters before the root <code><a href="semantics.html#the-html-element-0">html</a></code> element, and
262: space characters at the start of the <code><a href="semantics.html#the-html-element-0">html</a></code> element and
263: before the <code><a href="semantics.html#the-head-element-0">head</a></code> element, will be dropped when the
1.1 mike 264: document is parsed; space characters <em>after</em> the root
1.159 mike 265: <code><a href="semantics.html#the-html-element-0">html</a></code> element will be parsed as if they were at the end
266: of the <code><a href="semantics.html#the-body-element-0">body</a></code> element. Thus, space characters around the
1.1 mike 267: root element do not round-trip.</p>
268:
269: <p>It is suggested that newlines be inserted after the DOCTYPE,
270: after any comments that are before the root element, after the
1.159 mike 271: <code><a href="semantics.html#the-html-element-0">html</a></code> element's start tag (if it is not <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>), and after any comments
272: that are inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element but before the
273: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 274:
1.123 mike 275: </div><p>Many strings in the HTML syntax (e.g. the names of elements and
1.1 mike 276: their attributes) are case-insensitive, but only for characters in
1.547 mike 277: the ranges U+0041 to U+005A (LATIN CAPITAL LETTER A to LATIN CAPITAL
278: LETTER Z) and U+0061 to U+007A (LATIN SMALL LETTER A to LATIN SMALL
1.1 mike 279: LETTER Z). For convenience, in this section this is just referred to
1.168 mike 280: as "case-insensitive".</p><h4 id="the-doctype"><span class="secno">9.1.1 </span>The DOCTYPE</h4><p class="XXX annotation"><span><a href="http://www.w3.org/html/wg/tracker/issues/4">ISSUE-4</a> (html-versioning) blocks progress to Last Call</span></p><p>A <dfn id="syntax-doctype" title="syntax-doctype">DOCTYPE</dfn> is a mostly useless,
1.123 mike 281: but required, header.</p><p class="note">DOCTYPEs are required for legacy reasons. When
1.1 mike 282: omitted, browsers tend to use a different rendering mode that is
283: incompatible with some specifications. Including the DOCTYPE in a
284: document ensures that the browser makes a best-effort attempt at
1.123 mike 285: following the relevant specifications.</p><p>A DOCTYPE must consist of the following characters, in this
286: order:</p><ol class="brief"><li>A U+003C LESS-THAN SIGN (<code><</code>) character.</li>
1.1 mike 287: <li>A U+0021 EXCLAMATION MARK (<code>!</code>) character.</li>
288: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">DOCTYPE</code>".</li>
289: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
290: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">HTML</code>".</li>
291: <li>Optionally, a <a href="#doctype-legacy-string">DOCTYPE legacy string</a> (defined below).</li>
292: <li>Zero or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
293: <li>A U+003E GREATER-THAN SIGN (<code>></code>) character.</li>
294: </ol><p class="note">In other words, <code><!DOCTYPE HTML></code>,
1.123 mike 295: case-insensitively.</p><p>For the purposes of HTML generators that cannot output HTML
1.1 mike 296: markup with the short DOCTYPE "<code title=""><!DOCTYPE
297: HTML></code>", a <dfn id="doctype-legacy-string">DOCTYPE legacy string</dfn> may be inserted
298: into the DOCTYPE (in the position defined above). This string must
1.123 mike 299: consist of:</p><ol class="brief"><li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 300: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">SYSTEM</code>".</li>
1.444 mike 301: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 302: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>quote mark</i>).</li>
1.465 mike 303: <li>The literal string "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>".</li>
1.1 mike 304: <li>A matching U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (i.e. the same character as in the earlier step marked <i>quote mark</i>).</li>
305: </ol><p class="note">In other words, <code><!DOCTYPE HTML SYSTEM
306: "about:legacy-compat"></code> or <code><!DOCTYPE HTML SYSTEM
307: 'about:legacy-compat'></code>, case-insensitively except for the bit
1.123 mike 308: in quotes.</p><p>The <a href="#doctype-legacy-string">DOCTYPE legacy string</a> should not be used unless
1.1 mike 309: the document is generated from a system that cannot output the
1.373 mike 310: shorter string.</p><h4 id="elements-0"><span class="secno">9.1.2 </span>Elements</h4><p>There are five different kinds of <dfn id="syntax-elements" title="syntax-elements">elements</dfn>: <a href="#void-elements">void elements</a>,
311: <a href="#raw-text-elements">raw text elements</a>, <a href="#rcdata-elements">RCDATA elements</a>,
312: <a href="#foreign-elements">foreign elements</a>, and <a href="#normal-elements">normal elements</a>.</p><dl><dt><dfn id="void-elements">Void elements</dfn></dt>
1.1 mike 313:
314: <dd><code><a href="the-canvas-element.html#the-area-element">area</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>,
1.159 mike 315: <code><a href="tabular-data.html#the-col-element">col</a></code>, <code><a href="interactive-elements.html#the-command">command</a></code>, <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>,
316: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>,
1.1 mike 317: <code><a href="forms.html#the-keygen-element">keygen</a></code>, <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>,
1.159 mike 318: <code><a href="text-level-semantics.html#the-param-element">param</a></code>, <code><a href="video.html#the-source-element">source</a></code></dd>
1.1 mike 319:
1.373 mike 320: <dt><dfn id="raw-text-elements">Raw text elements</dfn></dt>
1.1 mike 321:
322: <dd><code><a href="semantics.html#script">script</a></code>, <code><a href="semantics.html#the-style-element">style</a></code></dd> <!-- iframe and
1.91 mike 323: noscript don't count as raw text for syntax purposes -->
1.1 mike 324:
1.373 mike 325: <dt><dfn id="rcdata-elements">RCDATA elements</dfn></dt>
1.1 mike 326:
1.159 mike 327: <dd><code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="semantics.html#the-title-element-0">title</a></code></dd>
1.1 mike 328:
1.373 mike 329: <dt><dfn id="foreign-elements">Foreign elements</dfn></dt>
1.1 mike 330:
331: <dd>Elements from the <a href="#mathml-namespace">MathML namespace</a>
332: and the <a href="#svg-namespace">SVG namespace</a>.</dd>
333:
1.373 mike 334: <dt><dfn id="normal-elements">Normal elements</dfn></dt>
1.1 mike 335:
336: <dd>All other allowed <a href="infrastructure.html#html-elements">HTML elements</a> are normal
337: elements.</dd>
338:
339: </dl><p><dfn id="syntax-tags" title="syntax-tags">Tags</dfn> are used to delimit the start
1.373 mike 340: and end of elements in the markup. <a href="#raw-text-elements" title="raw text
341: elements">Raw text</a>, <a href="#rcdata-elements" title="RCDATA
342: elements">RCDATA</a>, and <a href="#normal-elements" title="normal
343: elements">normal</a> elements have a <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> to indicate where they
344: begin, and an <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> to
345: indicate where they end. The start and end tags of certain
346: <a href="#normal-elements">normal elements</a> can be <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>, as described
1.1 mike 347: later. Those that cannot be omitted must not be omitted. <a href="#void-elements">Void
348: elements</a> only have a start tag; end tags must not be
1.373 mike 349: specified for <a href="#void-elements">void elements</a>. <a href="#foreign-elements">Foreign
350: elements</a> must either have a start tag and an end tag, or a
351: start tag that is marked as self-closing, in which case they must
352: not have an end tag.</p><p>The contents of the element must be placed between just after the
1.1 mike 353: start tag (which <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied,
354: in certain cases</a>) and just before the end tag (which again,
355: <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied in certain
356: cases</a>). The exact allowed contents of each individual element
357: depends on the content model of that element, as described earlier
358: in this specification. Elements must not contain content that their
359: content model disallows. In addition to the restrictions placed on
360: the contents by those content models, however, the five types of
1.123 mike 361: elements have additional <em>syntactic</em> requirements.</p><p><a href="#void-elements">Void elements</a> can't have any contents (since there's
1.1 mike 362: no end tag, no content can be put between the start tag and the end
1.373 mike 363: tag).</p><p><a href="#raw-text-elements">Raw text elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, though it has <a href="#cdata-rcdata-restrictions">restrictions</a> described
364: below.</p><p><a href="#rcdata-elements">RCDATA elements</a> can have <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, but the text
365: must not contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.
1.1 mike 366: There are also <a href="#cdata-rcdata-restrictions">further
1.373 mike 367: restrictions</a> described below.</p><p><a href="#foreign-elements">Foreign elements</a> whose start tag is marked as
368: self-closing can't have any contents (since, again, as there's no
369: end tag, no content can be put between the start tag and the end
370: tag). <a href="#foreign-elements">Foreign elements</a> whose start tag is <em>not</em>
371: marked as self-closing can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, <a href="#syntax-cdata" title="syntax-cdata">CDATA sections</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.1 mike 372: contain the character U+003C LESS-THAN SIGN (<code><</code>) or
373: an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.374 mike 374: ampersand</a>.</p><div class="note">
375:
376: <p>The HTML syntax does not support namespace
377: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
378:
379: <p>For instance, consider the following HTML fragment:</p>
380:
381: <pre><p>
382: <svg>
383: <metadata>
384: <!-- this is invalid -->
385: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
386: </metadata>
387: </svg>
388: </p></pre>
389:
390: <p>The innermost element, <code title="">cdr:license</code>, is
391: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
392: XML). In fact, as the comment in the fragment above says, the
393: fragment is actually non-conforming. This is because the SVG
394: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
395:
396: </div><p><a href="#normal-elements">Normal elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.1 mike 397: contain the character U+003C LESS-THAN SIGN (<code><</code>) or
398: an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.373 mike 399: ampersand</a>. Some <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 400: content they are allowed to hold, beyond the restrictions imposed by
401: the content model and those described in this paragraph. Those
1.123 mike 402: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 403: giving the element's name. HTML elements all have names that only
1.464 mike 404: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
405: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
406: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
407: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 408: elements</a>, may be written with any mix of lower- and uppercase
409: letters that, when converted to all-lowercase, matches the element's
410: tag name; tag names are case-insensitive.</p><h5 id="start-tags"><span class="secno">9.1.2.1 </span>Start tags</h5><p><dfn id="syntax-start-tag" title="syntax-start-tag">Start tags</dfn> must have the
1.123 mike 411: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.1 mike 412: SIGN (<code><</code>).</li>
413:
414: <li>The next few characters of a start tag must be the element's
415: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
416:
417: <li>If there are to be any attributes in the next step, there must
418: first be one or more <a href="infrastructure.html#space-character" title="space character">space
419: characters</a>.</li>
420:
421: <li>Then, the start tag may have a number of attributes, the <a href="#syntax-attributes" title="syntax-attributes">syntax for which</a> is described
422: below. Attributes may be separated from each other by one or more
423: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
424:
425: <li>After the attributes, there may be one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>. (Some attributes
426: are required to be followed by a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes section</a> below.)</li>
427:
428: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 429: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
430: element</a>, then there may be a single U+002F SOLIDUS
431: (<code>/</code>) character. This character has no effect on
432: <a href="#void-elements">void elements</a>, but on <a href="#foreign-elements">foreign elements</a> it
433: marks the start tag as self-closing.</li>
1.1 mike 434:
435: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
436: SIGN (<code>></code>) character.</li>
437:
1.123 mike 438: </ol><h5 id="end-tags"><span class="secno">9.1.2.2 </span>End tags</h5><p><dfn id="syntax-end-tag" title="syntax-end-tag">End tags</dfn> must have the
439: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.1 mike 440: SIGN (<code><</code>).</li>
441:
442: <li>The second character of an end tag must be a U+002F SOLIDUS
443: (<code>/</code>).</li>
444:
445: <li>The next few characters of an end tag must be the element's
446: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
447:
448: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
449: character">space characters</a>.</li>
450:
451: <li>Finally, end tags must be closed by a U+003E GREATER-THAN
452: SIGN (<code>></code>) character.</li>
453:
1.123 mike 454: </ol><h5 id="attributes"><span class="secno">9.1.2.3 </span>Attributes</h5><p><dfn id="syntax-attributes" title="syntax-attributes">Attributes</dfn> for an element
455: are expressed inside the element's start tag.</p><p>Attributes have a name and a value. <dfn id="syntax-attribute-name" title="syntax-attribute-name">Attribute names</dfn> must consist of
1.1 mike 456: one or more characters other than the <a href="infrastructure.html#space-character" title="space
457: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
458: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
459: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
460: the control characters, and any characters that are not defined by
1.462 mike 461: Unicode. In the HTML syntax, attribute names, even those for
462: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
463: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 464: case-insensitive</a> match for the attribute's name.</p><p><dfn id="syntax-attribute-value" title="syntax-attribute-value">Attribute values</dfn> are a
1.1 mike 465: mixture of <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, except with the
1.123 mike 466: additional restriction that the text cannot contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><p>Attributes can be specified in four different ways:</p><dl><dt>Empty attribute syntax</dt>
1.1 mike 467:
468: <dd>
469:
470: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
471: name</a>.</p>
472:
473: <div class="example">
474:
475: <p>In the following example, the <code title="attr-fe-disabled"><a href="forms.html#attr-fe-disabled">disabled</a></code> attribute is given with
476: the empty attribute syntax:</p>
477:
478: <pre><input <em>disabled</em>></pre>
479:
480: </div>
481:
482: <p>If an attribute using the empty attribute syntax is to be
483: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
484: character</a> separating the two.</p>
485:
486: </dd>
487:
1.2 mike 488: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 489:
490: <dd>
491:
492: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
493: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
494: characters</a>, followed by a single U+003D EQUALS SIGN
495: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
496: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
497: addition to the requirements given above for attribute values,
498: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
499: characters</a>, any U+0022 QUOTATION MARK (<code>"</code>)
500: characters, U+0027 APOSTROPHE (<code>'</code>) characters,
501: U+003D EQUALS SIGN (<code>=</code>) characters, U+003C LESS-THAN
1.463 mike 502: SIGN (<code><</code>) characters, U+003E GREATER-THAN SIGN
503: (<code>></code>) characters, or U+0060 GRAVE ACCENT (`)
504: characters, and must not be the empty string.</p>
505:
506: <!-- The ` character is in this list on a temporary basis, waiting
507: for IE to fix it's parsing bug whereby it treats ` as an
508: attribute value delimiter. Otherwise, escaping software that
509: tries to be clever and not use quotes when it doesn't need to
510: could be tricked by an attacker.
511:
512: Posit a site that allows the user to input text that is used
513: verbatim in two attributes, such that the user can set the
514: first attribute's value to:
515:
516: `
517:
518: ...and the second to:
519:
520: ` onload='...payload...' end=x
521:
522: ...with the assumption that the site is going to not quote
523: the first one, and quote the second one with double quotes:
524:
525: <body title=` class="` onload='...payload...' end=x">
526:
527: In IE, this is treated as:
528:
529: <body title=' class="'
530: onload='...payload...'
531: end='x"'>
532:
533: -->
534:
1.1 mike 535:
536: <div class="example">
537:
538: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
539: with the unquoted attribute value syntax:</p>
540:
541: <pre><input <em>value=yes</em>></pre>
542:
543: </div>
544:
545: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 546: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 547: character (/) allowed in step 6 of the <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> syntax above, then there
1.1 mike 548: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
549:
550: </dd>
551:
552: <dt>Single-quoted attribute value syntax</dt>
553:
554: <dd>
555:
556: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
557: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
558: characters</a>, followed by a single U+003D EQUALS SIGN
559: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
560: character">space characters</a>, followed by a single U+0027
561: APOSTROPHE (<code>'</code>) character, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
562: addition to the requirements given above for attribute values,
563: must not contain any literal U+0027 APOSTROPHE (<code>'</code>)
564: characters, and finally followed by a second single U+0027
565: APOSTROPHE (<code>'</code>) character.</p>
566:
567: <div class="example">
568:
569: <p>In the following example, the <code title="attr-input-type"><a href="forms.html#attr-input-type">type</a></code> attribute is given with the
570: single-quoted attribute value syntax:</p>
571:
572: <pre><input <em>type='checkbox'</em>></pre>
573:
574: </div>
575:
576: <p>If an attribute using the single-quoted attribute syntax is to
577: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
578: character</a> separating the two.</p>
579:
580: </dd>
581:
582: <dt>Double-quoted attribute value syntax</dt>
583:
584: <dd>
585:
586: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
587: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
588: characters</a>, followed by a single U+003D EQUALS SIGN
589: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
590: character">space characters</a>, followed by a single U+0022
591: QUOTATION MARK (<code>"</code>) character, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
592: addition to the requirements given above for attribute values,
593: must not contain any literal U+0022 QUOTATION MARK
594: (<code>"</code>) characters, and finally followed by a second
595: single U+0022 QUOTATION MARK (<code>"</code>) character.</p>
596:
597: <div class="example">
598:
599: <p>In the following example, the <code title="attr-fe-name"><a href="forms.html#attr-fe-name">name</a></code> attribute is given with the
600: double-quoted attribute value syntax:</p>
601:
602: <pre><input <em>name="be evil"</em>></pre>
603:
604: </div>
605:
606: <p>If an attribute using the double-quoted attribute syntax is to
607: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
608: character</a> separating the two.</p>
609:
610: </dd>
611:
612: </dl><p>There must never be two or more attributes on the same start tag
613: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 614: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
615: one of the namespaced attributes given by the local name and
616: namespace of the first and second cells of a row from the following
617: table, it must be written using the name given by the third cell
618: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
619: </th></tr></thead><tbody><tr><td> <code title="">actuate</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:actuate</code>
620: </td></tr><tr><td> <code title="">arcrole</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:arcrole</code>
621: </td></tr><tr><td> <code title="">href</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:href</code>
622: </td></tr><tr><td> <code title="">role</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:role</code>
623: </td></tr><tr><td> <code title="">show</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:show</code>
624: </td></tr><tr><td> <code title="">title</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:title</code>
625: </td></tr><tr><td> <code title="">type</code> </td><td> <a href="#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:type</code>
626: </td></tr><tr><td> <code title="">base</code> </td><td> <a href="#xml-namespace">XML namespace</a> <!-- attr-xml-base --> </td><td> <code title="">xml:base</code>
627: </td></tr><tr><td> <code title="">lang</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:lang</code>
628: </td></tr><tr><td> <code title="">space</code> </td><td> <a href="#xml-namespace">XML namespace</a> </td><td> <code title="">xml:space</code>
629: </td></tr><tr><td> <code title="">xmlns</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns</code>
630: </td></tr><tr><td> <code title="">xlink</code> </td><td> <a href="#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns:xlink</code>
631: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in the <a href="#syntax">the
632: HTML syntax</a>.</p><h5 id="optional-tags"><span class="secno">9.1.2.4 </span>Optional tags</h5><p>Certain tags can be <dfn id="syntax-tag-omission" title="syntax-tag-omission">omitted</dfn>.</p><p class="note">Omitting an element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> does not mean the element
1.1 mike 633: is not present; it is implied, but it is still there. An HTML
1.159 mike 634: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 635: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 636: the markup.</p><!-- <html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
637: first thing inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
638: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
639: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted <!--if the
1.1 mike 640: element is empty, or--> if the first thing inside the
1.159 mike 641: <code><a href="semantics.html#the-head-element-0">head</a></code> element is an element.</p><!-- </head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
642: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
643: immediately followed by a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
644: element is empty, or if the first thing inside the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 645: element is not a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>, except if the first thing
1.159 mike 646: inside the <code><a href="semantics.html#the-body-element-0">body</a></code> element is a <code><a href="semantics.html#script">script</a></code> or
1.1 mike 647: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
648: tag is present, the parser makes <style> and <script> elements
649: between </head> and <body> end up in the <head> instead of implying
1.159 mike 650: the <body> --></p><!-- </body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
651: tag</a> may be omitted if the <code><a href="semantics.html#the-body-element-0">body</a></code> element is not
1.123 mike 652: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </li> --><p>A <code><a href="semantics.html#the-li-element">li</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 653: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
654: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 655: is no more content in the parent element.</p><!-- </dt> --><p>A <code><a href="semantics.html#the-dt-element">dt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 656: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
657: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 658: <code><a href="semantics.html#the-dd-element">dd</a></code> element.</p><!-- </dd> --><p>A <code><a href="semantics.html#the-dd-element">dd</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 659: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
660: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
661: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 662: parent element.</p><!-- </p> --><p>A <code><a href="semantics.html#the-p-element">p</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 663: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
664: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
665: <code><a href="semantics.html#the-article-element">article</a></code>, <code><a href="semantics.html#the-aside-element">aside</a></code>, <code><a href="semantics.html#the-blockquote-element">blockquote</a></code>,
1.305 mike 666: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 667: <code><a href="semantics.html#the-div-element">div</a></code>, <code><a href="semantics.html#the-dl-element">dl</a></code>, <code><a href="forms.html#the-fieldset-element">fieldset</a></code>,
1.305 mike 668: <code><a href="semantics.html#the-footer-element">footer</a></code>, <code><a href="forms.html#the-form-element">form</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a></code>,
669: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a></code>,
670: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a></code>, <code><a href="semantics.html#the-header-element">header</a></code>, <code><a href="semantics.html#the-hgroup-element">hgroup</a></code>,
671: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="interactive-elements.html#menus">menu</a></code>, <code><a href="semantics.html#the-nav-element">nav</a></code>,
672: <code><a href="semantics.html#the-ol-element">ol</a></code>, <code><a href="semantics.html#the-p-element">p</a></code>, <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.1 mike 673: <code><a href="semantics.html#the-section-element">section</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>, or <code><a href="semantics.html#the-ul-element">ul</a></code>,
674: element, or if there is no more content in the parent element and
1.123 mike 675: the parent element is not an <code><a href="text-level-semantics.html#the-a-element">a</a></code> element.</p><!-- </rt> --><p>An <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 676: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
677: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 678: element, or if there is no more content in the parent element.</p><!-- </rp> --><p>An <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 679: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
680: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 681: element, or if there is no more content in the parent element.</p><!-- </optgroup> (the text assumes <optgroup> can only be inside a
1.1 mike 682: <select>; commented out text below can handle the non-<select> case
1.123 mike 683: if we ever allow it) --><p>An <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 684: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
685: <code>select</code> element and--> is immediately followed by
686: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
687: that are ancestors of the <code>optgroup</code> element, up to and
688: including the first ancestor element that is not an
689: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 690: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 691: <select><optgroup></select>
692: <p id=x><optgroup></optgroup>x</p>
693: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
694: <p><optgroup id=x><optgroup></optgroup>x</p>
695: <p><optgroup><optgroup id=x>x</p>
1.123 mike 696: --><!-- </option> --><p>An <code><a href="forms.html#the-option-element">option</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 697: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
698: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
699: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 700: if there is no more content in the parent element.</p><!-- <colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 701: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
702: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
703: preceded by another <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> has been omitted. (It can't be
1.123 mike 704: omitted if the element is empty.)</p><!-- </colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 705: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 706: <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </thead> --><p>A <code><a href="tabular-data.html#the-thead-element">thead</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 707: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
708: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 709: element.</p><!-- <tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 710: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
711: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
712: preceded by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or
713: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
714: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 715: empty.)</p><!-- </tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 716: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
717: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 718: element, or if there is no more content in the parent element.</p><!-- </tfoot> --><p>A <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 719: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
720: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 721: no more content in the parent element.</p><!-- </tr> --><p>A <code><a href="tabular-data.html#the-tr-element">tr</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 722: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
723: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 724: is no more content in the parent element.</p><!-- </td> --><p>A <code><a href="tabular-data.html#the-td-element">td</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 725: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
726: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 727: element, or if there is no more content in the parent element.</p><!-- </th> --><p>A <code><a href="tabular-data.html#the-th-element">th</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 728: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
729: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 730: element, or if there is no more content in the parent element.</p><p><strong>However</strong>, a <a href="#syntax-start-tag" title="syntax-start-tag">start
731: tag</a> must never be omitted if it has any attributes.</p><h5 id="element-restrictions"><span class="secno">9.1.2.5 </span>Restrictions on content models</h5><p>For historical reasons, certain elements have extra restrictions
732: beyond even the restrictions given by their content model.</p><p>A <code><a href="tabular-data.html#the-table-element">table</a></code> element must not contain <code><a href="tabular-data.html#the-tr-element">tr</a></code>
1.1 mike 733: elements, even though these elements are technically allowed inside
734: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
735: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
736: put inside a <code><a href="tabular-data.html#the-table-element">table</a></code> in the markup, it will in fact imply
1.304 mike 737: a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag before it.)</p><p>A single <a href="#syntax-newlines" title="syntax-newlines">newline</a> may be
738: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 739: tag</a> of <code><a href="semantics.html#the-pre-element">pre</a></code> and <code><a href="forms.html#the-textarea-element">textarea</a></code>
740: elements. This does not affect the processing of the element. The
1.304 mike 741: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 742: <em>must</em> be included if the element's contents themselves start
743: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
744: otherwise the leading newline in the contents would be treated like
745: the optional newline, and ignored).</p><div class="example">
1.1 mike 746: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
747: <pre><pre>Hello</pre></pre>
748: <pre><pre><br>Hello</pre></pre>
1.373 mike 749: </div><h5 id="cdata-rcdata-restrictions"><span class="secno">9.1.2.6 </span>Restrictions on the contents of raw text and RCDATA elements</h5><p>The text in <a href="#raw-text-elements" title="raw text elements">raw text</a> and
750: <a href="#rcdata-elements" title="RCDATA elements">RCDATAs</a> element must not
751: contain any occurrences of the string "<code title=""></</code>"
752: (U+003C LESS-THAN SIGN, U+002F SOLIDUS) followed by characters that
1.1 mike 753: case-insensitively match the tag name of the element followed by one
754: of U+0009 CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM
1.304 mike 755: FEED (FF), U+000D CARRIAGE RETURN (CR), U+0020 SPACE, U+003E
1.542 mike 756: GREATER-THAN SIGN (>), or U+002F SOLIDUS (/).</p><h4 id="text-0"><span class="secno">9.1.3 </span>Text</h4><p><dfn id="syntax-text" title="syntax-text">Text</dfn> is allowed inside elements,
1.1 mike 757: attributes, and comments. Text must consist of Unicode characters.
758: Text must not contain U+0000 characters. Text must not contain
1.316 mike 759: permanently undefined Unicode characters (noncharacters). Text must
760: not contain control characters other than <a href="infrastructure.html#space-character" title="space
761: character">space characters</a>. Extra constraints are placed on
762: what is and what is not allowed in text based on where the text is
763: to be put, as described in the other sections.</p><h5 id="newlines"><span class="secno">9.1.3.1 </span>Newlines</h5><p><dfn id="syntax-newlines" title="syntax-newlines">Newlines</dfn> in HTML may be
1.1 mike 764: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
765: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.123 mike 766: U+000A LINE FEED (LF) characters in that order.</p><h4 id="character-references"><span class="secno">9.1.4 </span>Character references</h4><p>In certain cases described in other sections, <a href="#syntax-text" title="syntax-text">text</a> may be mixed with <dfn id="syntax-charref" title="syntax-charref">character references</dfn>. These can be used
1.1 mike 767: to escape characters that couldn't otherwise legally be included in
1.123 mike 768: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND
1.1 mike 769: (<code>&</code>). Following this, there are three possible kinds
1.123 mike 770: of character references:</p><dl><dt>Named character references</dt>
1.1 mike 771:
772: <dd>The ampersand must be followed by one of the names given in the
773: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
774: case. The name must be one that is terminated by a U+003B SEMICOLON
1.464 mike 775: character (;).</dd>
1.1 mike 776:
777:
778: <dt>Decimal numeric character reference</dt>
779:
780: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
781: (<code>#</code>) character, followed by one or more digits in the
1.464 mike 782: range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing
783: a base-ten integer that corresponds to a Unicode code point that is
1.378 mike 784: allowed according to the definition below. The digits must then be
1.464 mike 785: followed by a U+003B SEMICOLON character (;).</dd>
1.1 mike 786:
787:
788: <dt>Hexadecimal numeric character reference</dt>
789:
790: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
791: (<code>#</code>) character, which must be followed by either a
1.464 mike 792: U+0078 LATIN SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL
793: LETTER X character (X), which must then be followed by one or more
794: digits in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9),
795: U+0061 LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and
796: U+0041 LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
797: representing a base-sixteen integer that corresponds to a Unicode
798: code point that is allowed according to the definition below. The
799: digits must then be followed by a U+003B SEMICOLON character
800: (;).</dd>
1.378 mike 801:
802: </dl><p>The numeric character reference forms described above are allowed
803: to reference any Unicode code point other than U+0000, permanently
804: undefined Unicode characters (noncharacters), and control characters
805: other than <a href="infrastructure.html#space-character" title="space character">space
806: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 807: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
808: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
809: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
810: (<), or another U+0026 AMPERSAND character
811: (<code>&</code>).</p><h4 id="cdata-sections"><span class="secno">9.1.5 </span>CDATA sections</h4><p><dfn id="syntax-cdata" title="syntax-cdata">CDATA sections</dfn> must start with
1.1 mike 812: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
813: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
814: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
815: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
816: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
817: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
818: that the text must not contain the three character sequence U+005D
819: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
820: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
821: section must be ended by the three character sequence U+005D RIGHT
822: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.159 mike 823: SIGN (<code title="">]]></code>).</p><h4 id="comments"><span class="secno">9.1.6 </span>Comments</h4><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p><p><dfn id="syntax-comments" title="syntax-comments">Comments</dfn> must start with the
1.1 mike 824: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
825: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
826: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
827: restriction that the text must not start with a single U+003E
1.464 mike 828: GREATER-THAN SIGN (>) character, nor start with a U+002D
829: HYPHEN-MINUS character (-) followed by a
830: U+003E GREATER-THAN SIGN (>) character, nor contain two
1.1 mike 831: consecutive U+002D HYPHEN-MINUS (<code title="">-</code>)
832: characters, nor end with a U+002D HYPHEN-MINUS (<code title="">-</code>) character. Finally, the comment must be ended by
833: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 834: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 835:
1.159 mike 836: <h3 id="parsing"><span class="secno">9.2 </span>Parsing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 837:
838: <p><i>This section only applies to user agents, data mining tools,
839: and conformance checkers.</i></p>
840:
841: <p class="note">The rules for parsing XML documents into DOM trees
842: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
843: syntax</a>".</p>
844:
845: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
846: rules described in this section to generate the DOM trees. Together,
847: these rules define what is referred to as the <dfn id="html-parser">HTML
848: parser</dfn>.</p>
849:
850: <div class="note">
851:
852: <p>While the HTML syntax described in this specification bears a
853: close resemblance to SGML and XML, it is a separate language with
854: its own parsing rules.</p>
855:
1.183 mike 856: <p>Some earlier versions of HTML (in particular from HTML2 to
857: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 858: (if any) web browsers ever implemented true SGML parsing for HTML
859: documents; the only user agents to strictly handle HTML as an SGML
860: application have historically been validators. The resulting
861: confusion — with validators claiming documents to have one
862: representation while widely deployed Web browsers interoperably
863: implemented a different representation — has wasted decades
864: of productivity. This version of HTML thus returns to a non-SGML
865: basis.</p>
866:
867: <p>Authors interested in using SGML tools in their authoring
868: pipeline are encouraged to use XML tools and the XML serialization
869: of HTML.</p>
870:
871: </div>
872:
873: <p>This specification defines the parsing rules for HTML documents,
874: whether they are syntactically correct or not. Certain points in the
875: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
876: errors</dfn>. The error handling for parse errors is well-defined:
877: user agents must either act as described below when encountering
878: such problems, or must abort processing at the first error that they
879: encounter for which they do not wish to apply the rules described
880: below.</p>
881:
882: <p>Conformance checkers must report at least one parse error
883: condition to the user if one or more parse error conditions exist in
884: the document and must not report parse error conditions if none
885: exist in the document. Conformance checkers may report more than one
1.174 mike 886: parse error condition if more than one parse error condition exists
1.1 mike 887: in the document. Conformance checkers are not required to recover
888: from parse errors.</p>
889:
890: <p class="note">Parse errors are only errors with the
891: <em>syntax</em> of HTML. In addition to checking for parse errors,
892: conformance checkers will also verify that the document obeys all
893: the other conformance requirements described in this
894: specification.</p>
895:
896: <p>For the purposes of conformance checkers, if a resource is
897: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
898: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
899:
1.266 mike 900: </div><div class="impl">
1.1 mike 901:
902: <h4 id="overview-of-the-parsing-model"><span class="secno">9.2.1 </span>Overview of the parsing model</h4>
903:
904: <p>The input to the HTML parsing process consists of a stream of
905: Unicode characters, which is passed through a
906: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
907: construction</a> stage. The output is a <code>Document</code>
908: object.</p>
909:
910: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
911: support scripting</a> do not have to actually create a DOM
912: <code>Document</code> object, but the DOM tree in such cases is
913: still used as the model for the rest of the specification.</p>
914:
915: <p>In the common case, the data handled by the tokenization stage
1.159 mike 916: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
917: insertion">it can also come from script</a>, e.g. using the <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> API.</p>
1.1 mike 918:
919: <p><img alt="" src="images/parsing-model-overview.png"></p>
920:
921: <p id="nestedParsing">There is only one set of states for the
922: tokenizer stage and the tree construction stage, but the tree
923: construction stage is reentrant, meaning that while the tree
924: construction stage is handling one token, the tokenizer might be
925: resumed, causing further tokens to be emitted and processed before
926: the first token's processing is complete.</p>
927:
928: <div class="example">
929:
930: <p>In the following example, the tree construction stage will be
931: called upon to handle a "p" start tag token while handling the
932: "script" start tag token:</p>
933:
934: <pre>...
935: <script>
936: document.write('<p>');
937: </script>
938: ...</pre>
939:
940: </div>
941:
942: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
943: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
944: pause flag</dfn>, which must be initially set to false.</p>
945:
1.266 mike 946: </div><div class="impl">
1.1 mike 947:
948: <h4 id="the-input-stream"><span class="secno">9.2.2 </span>The <dfn>input stream</dfn></h4>
949:
950: <p>The stream of Unicode characters that comprises the input to the
951: tokenization stage will be initially seen by the user agent as a
952: stream of bytes (typically coming over the network or from the local
953: file system). The bytes encode the actual characters according to a
954: particular <em>character encoding</em>, which the user agent must
955: use to decode the bytes into characters.</p>
956:
957: <p class="note">For XML documents, the algorithm user agents must
958: use to determine the character encoding is given by the XML
1.104 mike 959: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 960:
961:
1.168 mike 962: <h5 id="determining-the-character-encoding"><span class="secno">9.2.2.1 </span>Determining the character encoding</h5><p class="XXX annotation"><b>Status: </b><i>Working draft</i></p>
1.1 mike 963:
964: <p>In some cases, it might be impractical to unambiguously determine
965: the encoding before parsing the document. Because of this, this
966: specification provides for a two-pass mechanism with an optional
967: pre-scan. Implementations are allowed, as described below, to apply
968: a simplified parsing algorithm to whatever bytes they have available
969: before beginning to parse the document. Then, the real parser is
970: started, using a tentative encoding derived from this pre-parse and
971: other out-of-band metadata. If, while the document is being loaded,
972: the user agent discovers an encoding declaration that conflicts with
973: this information, then the parser can get reinvoked to perform a
974: parse of the document with the real encoding.</p>
975:
976: <p id="documentEncoding">User agents must use the following
977: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
978: the character encoding to use when decoding a document in the first
979: pass. This algorithm takes as input any out-of-band metadata
980: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
981: and all the bytes available so far, and returns an encoding and a
982: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
983: confidence is either <i>tentative</i>, <i>certain</i>, or
984: <i>irrelevant</i>. The encoding used, and whether the confidence in
985: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
986: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
987: encoding is necessary, e.g. because the parser is operating on a
988: stream of Unicode characters and doesn't have to use an encoding at
989: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
990: <i>irrelevant</i>.</p>
991:
992: <ol><li><p>If the transport layer specifies an encoding, and it is
993: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
994: <i>certain</i>, and abort these steps.</p></li>
995:
996: <li><p>The user agent may wait for more bytes of the resource to be
997: available, either in this step or at any later step in this
998: algorithm. For instance, a user agent might wait 500ms or 512
999: bytes, whichever came first. In general preparsing the source to
1000: find the encoding improves performance, as it reduces the need to
1001: throw away the data structures used when parsing upon finding the
1002: encoding information. However, if the user agent delays too long to
1003: obtain data to determine the encoding, then the cost of the delay
1004: could outweigh any performance improvements from the
1005: preparse.</p></li>
1006:
1007: <li><p>For each of the rows in the following table, starting with
1008: the first one and going down, if there are as many or more bytes
1009: available than the number of bytes in the first column, and the
1010: first bytes of the file match the bytes given in the first column,
1011: then return the encoding given in the cell in the second column of
1012: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1013: <i>certain</i>, and abort these steps:</p>
1014:
1015: <!-- this table is present in several forms in this file; keep them in sync -->
1016: <table><thead><tr><th>Bytes in Hexadecimal
1017: </th><th>Encoding
1018: </th></tr></thead><tbody><!-- nobody uses this
1019: <tr>
1020: <td>00 00 FE FF
1021: <td>UTF-32BE
1022: <tr>
1023: <td>FF FE 00 00
1024: <td>UTF-32LE
1025: --><tr><td>FE FF
1026: </td><td>UTF-16BE
1027: </td></tr><tr><td>FF FE
1028: </td><td>UTF-16LE
1029: </td></tr><tr><td>EF BB BF
1030: </td><td>UTF-8
1031: <!-- nobody uses this
1032: <tr>
1033: <td>DD 73 66 73
1034: <td>UTF-EBCDIC
1035: -->
1036: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1037: (BOMs).</p></li>
1038:
1039: <li><p>Otherwise, the user agent will have to search for explicit
1040: character encoding information in the file itself. This should
1041: proceed as follows:
1042:
1043: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1044: input stream, initially pointing at the first byte. If at any
1045: point during these substeps the user agent either runs out of
1046: bytes or decides that scanning further bytes would not be
1047: efficient, then skip to the next step of the overall character
1048: encoding detection algorithm. User agents may decide that scanning
1049: <em>any</em> bytes is not efficient, in which case these substeps
1050: are entirely skipped.</p>
1051:
1052: <p>Now, repeat the following "two" steps until the algorithm
1053: aborts (either because user agent aborts, as described above, or
1054: because a character encoding is found):</p>
1055:
1056: <ol><li><p>If <var title="">position</var> points to:</p>
1057:
1058: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1059: <dd>
1060:
1061: <p>Advance the <var title="">position</var> pointer so that it
1062: points at the first 0x3E byte which is preceded by two 0x2D
1063: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1064: after the 0x3C byte that was found. (The two 0x2D bytes can be
1065: the same as the those in the '<!--' sequence.)</p>
1066:
1067: </dd>
1068:
1069: <dt>A sequence of bytes starting with: 0x3C, 0x4D or 0x6D, 0x45 or 0x65, 0x54 or 0x74, 0x41 or 0x61, and finally one of 0x09, 0x0A, 0x0C, 0x0D, 0x20, 0x2F (case-insensitive ASCII '<meta' followed by a space or slash)</dt>
1070: <dd>
1071:
1072: <ol><li><p>Advance the <var title="">position</var> pointer so
1073: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1074: 0x2F byte (the one in sequence of characters matched
1075: above).</p></li>
1076:
1077: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1078: an attribute</a> and its value. If no attribute was
1079: sniffed, then skip this inner set of steps, and jump to the
1080: second step in the overall "two step" algorithm.</p></li>
1081:
1082: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1083: then return to step 2 in these inner steps.</p></li>
1084:
1085: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1086: the attribute's value, interpreted as a character
1087: encoding.</p></li>
1088:
1089: <li><p>Otherwise, the attribute's name is "<code title="">content</code>": apply the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for
1090: extracting an encoding from a Content-Type</a>, giving the
1091: attribute's value as the string to parse. If an encoding is
1092: returned, let <var title="">charset</var> be that
1093: encoding. Otherwise, return to step 2 in these inner
1094: steps.</p></li>
1095:
1096: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1097: change the value of <var title="">charset</var> to
1098: UTF-8.</p></li>
1099:
1100: <li><p>If <var title="">charset</var> is a supported
1101: character encoding, then return the given encoding, with
1102: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1103: <i>tentative</i>, and abort all these steps.</p></li>
1104:
1105: <li><p>Otherwise, return to step 2 in these inner
1106: steps.</p></li>
1107:
1108: </ol></dd>
1109:
1.464 mike 1110: <dt>A sequence of bytes starting with a 0x3C byte (ASCII <), optionally a 0x2F byte (ASCII /), and finally a byte in the range 0x41-0x5A or 0x61-0x7A (an ASCII letter)</dt>
1.1 mike 1111: <dd>
1112:
1113: <ol><li><p>Advance the <var title="">position</var> pointer so
1114: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1115: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1116: (ASCII >) byte.</p></li>
1.1 mike 1117:
1118: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1119: attribute</a> until no further attributes can be found,
1120: then jump to the second step in the overall "two step"
1121: algorithm.</p></li>
1122:
1123: </ol></dd>
1124:
1125: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1126: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1127: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1128: <dd>
1129:
1130: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1131: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1132: 0x3C byte that was found.</p>
1133:
1134: </dd>
1135:
1136: <dt>Any other byte</dt>
1137: <dd>
1138:
1139: <p>Do nothing with that byte.</p>
1140:
1141: </dd>
1142:
1143: </dl></li>
1144:
1145: <li>Move <var title="">position</var> so it points at the next
1146: byte in the input stream, and return to the first step of this
1147: "two step" algorithm.</li>
1148:
1149: </ol><p>When the above "two step" algorithm says to <dfn id="concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1150: attribute</dfn>, it means doing this:</p>
1151:
1152: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1153: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1154: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1155: substep.</p></li>
1156:
1157: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1158: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1159: one.</p></li>
1160:
1161: <li><p>Otherwise, the byte at <var title="">position</var> is the
1162: start of the attribute name. Let <var title="">attribute
1163: name</var> and <var title="">attribute value</var> be the empty
1164: string.</p></li>
1165:
1166: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1167:
1.464 mike 1168: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1169: name</var> is longer than the empty string</dt>
1170:
1171: <dd>Advance <var title="">position</var> to the next byte and
1172: jump to the step below labeled <i>value</i>.</dd>
1173:
1174: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1175: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1176:
1177: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1178:
1.464 mike 1179: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1180:
1181: <dd>Abort the "get an attribute" algorithm. The attribute's
1182: name is the value of <var title="">attribute name</var>, its
1183: value is the empty string.</dd>
1184:
1.464 mike 1185: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1186: Z)</dt>
1.1 mike 1187:
1188: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1189: name</var> (where <var title="">b</var> is the value of the
1190: byte at <var title="">position</var>).</dd>
1191:
1192: <dt>Anything else</dt>
1193:
1194: <dd>Append the Unicode character with the same code point as the
1195: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1196: bytes outside the ASCII range are handled here, since only
1197: ASCII characters can contribute to the detection of a character
1198: encoding.)</dd>
1199:
1200: </dl></li>
1201:
1202: <li><p>Advance <var title="">position</var> to the next byte and
1203: return to the previous step.</p></li>
1204:
1205: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1206: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1207: advance <var title="">position</var> to the next byte, then,
1208: repeat this step.</p></li>
1209:
1210: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1211: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1212: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1213: string.</p></li>
1214:
1215: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1216: =) byte.</p></li>
1.1 mike 1217:
1218: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1219: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1220: advance <var title="">position</var> to the next byte, then,
1221: repeat this step.</p></li>
1222:
1223: <li><p>Process the byte at <var title="">position</var> as
1224: follows:</p>
1225:
1.464 mike 1226: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1227:
1228: <dd>
1229:
1230: <ol><li>Let <var title="">b</var> be the value of the byte at
1231: <var title="">position</var>.</li>
1232:
1233: <li>Advance <var title="">position</var> to the next
1234: byte.</li>
1235:
1236: <li>If the value of the byte at <var title="">position</var>
1237: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1238: an attribute" algorithm. The attribute's name is the value of
1239: <var title="">attribute name</var>, and its value is the
1240: value of <var title="">attribute value</var>.</li>
1241:
1.464 mike 1242: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1243: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1244: than the value of the byte at <var title="">position</var>.</li>
1245:
1246: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1247: the value of the byte at <var title="">position</var>.</li>
1248:
1249: <li>Return to the second step in these substeps.</li>
1250:
1251: </ol></dd>
1252:
1.464 mike 1253: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1254:
1255: <dd>Abort the "get an attribute" algorithm. The attribute's
1256: name is the value of <var title="">attribute name</var>, its
1257: value is the empty string.</dd>
1258:
1259:
1.464 mike 1260: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1261: Z)</dt>
1.1 mike 1262:
1263: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1264: value</var> (where <var title="">b</var> is the value of the
1265: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1266:
1267: <dt>Anything else</dt>
1268:
1269: <dd>Append the Unicode character with the same code point as the
1270: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>. Advance <var title="">position</var> to the next byte.</dd>
1271:
1272: </dl></li>
1273:
1274: <li><p>Process the byte at <var title="">position</var> as
1275: follows:</p>
1276:
1277: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1278: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1279: >)</dt>
1.1 mike 1280:
1281: <dd>Abort the "get an attribute" algorithm. The attribute's
1282: name is the value of <var title="">attribute name</var> and its
1283: value is the value of <var title="">attribute value</var>.</dd>
1284:
1.464 mike 1285: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1286: Z)</dt>
1.1 mike 1287:
1288: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1289: value</var> (where <var title="">b</var> is the value of the
1290: byte at <var title="">position</var>).</dd>
1291:
1292: <dt>Anything else</dt>
1293:
1294: <dd>Append the Unicode character with the same code point as the
1295: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1296:
1297: </dl></li>
1298:
1299: <li><p>Advance <var title="">position</var> to the next byte and
1300: return to the previous step.</p></li>
1301:
1302: </ol><p>For the sake of interoperability, user agents should not use a
1303: pre-scan algorithm that returns different results than the one
1304: described above. (But, if you do, please at least let us know, so
1305: that we can improve this algorithm and benefit everyone...)</p>
1306:
1307: </li>
1308:
1309: <li><p>If the user agent has information on the likely encoding for
1310: this page, e.g. based on the encoding of the page when it was last
1311: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1312: <i>tentative</i>, and abort these steps.</p></li>
1313:
1.322 mike 1314: <li>
1315:
1316: <p>The user agent may attempt to autodetect the character encoding
1317: from applying frequency analysis or other algorithms to the data
1318: stream. If autodetection succeeds in determining a character
1319: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1320: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1321:
1322: <p class="note">The UTF-8 encoding has a highly detectable bit
1323: pattern. Documents that contain bytes with values greater than
1324: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1325: while documents with byte sequences that do not match it are very
1326: likely not. User-agents are therefore encouraged to search for
1.485 mike 1327: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1328:
1329: </li>
1.1 mike 1330:
1.501 mike 1331: <li>
1332:
1333: <p>Otherwise, return an implementation-defined or user-specified
1334: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1335: <i>tentative</i>.</p>
1336:
1337: <p>In controlled environments or in environments where the
1338: encoding of documents can be prescribed (for example, for user
1339: agents intended for dedicated use in new networks), the
1340: comprehensive <code title="">UTF-8</code> encoding is
1341: suggested.</p>
1342:
1343: <p>In other environments, the default encoding is typically
1344: dependent on the user's locale (an approximation of the languages,
1345: and thus typically encodings, of the pages that the user is likely
1346: to frequent). The following table gives suggested defaults based
1.504 mike 1347: on the user's locale, for compatibility with legacy
1348: content. Locales are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1349:
1350: <!-- based on mozilla 1.9.1 localizations:
1351: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1352:
1.504 mike 1353: <table><thead><tr><th>Locale language
1.501 mike 1354: </th><th>Suggested default encoding
1355: </th></tr></thead><tbody><tr><td>ar
1356: </td><td>UTF-8
1357:
1358: </td></tr><tr><td>be
1359: </td><td>ISO-8859-5
1360:
1361: </td></tr><tr><td>bg
1362: </td><td>windows-1251
1363:
1364: </td></tr><tr><td>cs<!-- -CZ -->
1365: </td><td>ISO-8859-2
1366:
1367: </td></tr><tr><td>cy
1368: </td><td>UTF-8
1369:
1370: </td></tr><tr><td>fa<!-- -IR -->
1371: </td><td>UTF-8
1372:
1373: </td></tr><tr><td>he<!-- -IL -->
1374: </td><td>windows-1255
1375:
1376: </td></tr><tr><td>hr
1377: </td><td>UTF-8
1378:
1379: </td></tr><tr><td>hu<!-- -HU -->
1380: </td><td>ISO-8859-2
1381:
1382: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1383: </td><td>windows-31J <!-- Shift_JIS -->
1384:
1385: </td></tr><tr><td>kk
1386: </td><td>UTF-8
1387:
1388: </td></tr><tr><td>ko<!-- -KR -->
1389: </td><td>windows-949 <!-- EUC-KR -->
1390:
1391: </td></tr><tr><td>ku
1392: </td><td>windows-1254 <!-- ISO-8859-9 -->
1393:
1394: </td></tr><tr><td>lt
1395: </td><td>windows-1257
1396:
1397: </td></tr><tr><td>lv<!-- -LV -->
1398: </td><td>ISO-8859-13
1399:
1400: </td></tr><tr><td>mk<!-- -MK -->
1401: </td><td>UTF-8
1402:
1403: </td></tr><tr><td>or
1404: </td><td>UTF-8
1405:
1406: </td></tr><tr><td>pl<!-- -PL -->
1407: </td><td>ISO-8859-2
1408:
1409: </td></tr><tr><td>ro
1410: </td><td>UTF-8
1411:
1412: </td></tr><tr><td>ru
1413: </td><td>windows-1251
1414:
1415: </td></tr><tr><td>sk
1416: </td><td>windows-1250
1417:
1418: </td></tr><tr><td>sl
1419: </td><td>ISO-8859-2
1420:
1421: </td></tr><tr><td>sr
1422: </td><td>UTF-8
1423:
1424: </td></tr><tr><td>th
1425: </td><td>windows-874 <!-- TIS-620 -->
1426:
1427: </td></tr><tr><td>tr<!-- -TR -->
1428: </td><td>windows-1254 <!-- ISO-8859-9 -->
1429:
1.503 mike 1430: </td></tr><tr><td>uk
1.501 mike 1431: </td><td>windows-1251
1432:
1433: </td></tr><tr><td>vi
1434: </td><td>UTF-8
1435:
1436: </td></tr><tr><td>zh-CN
1437: </td><td>GB18030
1438:
1439: </td></tr><tr><td>zh-TW
1440: </td><td>Big5
1441:
1442: </td></tr><tr><td>All other locales
1443: </td><td>windows-1252
1444:
1445: </td></tr></tbody></table></li>
1.1 mike 1446:
1447: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1448: be set to the value returned from this algorithm, at the same time
1449: as the user agent uses the returned value to select the decoder to
1450: use for the input stream.</p>
1451:
1452:
1.237 mike 1453: <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 1454:
1.237 mike 1455: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1456: encodings, but may support more.</p>
1457:
1458: <p class="note">It is not unusual for Web browsers to support dozens
1459: if not upwards of a hundred distinct character encodings.</p>
1460:
1.365 mike 1461: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1462: every character encoding they support, and should support all the
1463: IANA-registered names and aliases of every character encoding they
1464: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1465:
1466: <p>When comparing a string specifying a character encoding with the
1467: name or alias of a character encoding to determine if they are
1468: 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
1469: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1470: case-insensitive</a> manner.</p>
1471:
1.539 mike 1472: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1473: first column of the following table to either convert content to
1474: Unicode characters or convert Unicode characters to bytes, it must
1475: instead use the encoding given in the cell in the second column of
1476: the same row. When a byte or sequence of bytes is treated
1477: differently due to this encoding aliasing, it is said to have been
1478: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1479:
1480: <table><caption>Character encoding overrides</caption>
1481: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1482: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1483: <a href="references.html#refsEUCKR">[EUCKR]</a>
1484: <a href="references.html#refsWIN949">[WIN949]</a>
1485: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1486: <a href="references.html#refsRFC1345">[RFC1345]</a>
1487: <a href="references.html#refsGBK">[GBK]</a>
1488: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1489: <a href="references.html#refsRFC1345">[RFC1345]</a>
1490: <a href="references.html#refsGBK">[GBK]</a>
1491: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1492: <a href="references.html#refsRFC1345">[RFC1345]</a>
1493: <a href="references.html#refsWIN1252">[WIN1252]</a>
1494: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1495: <a href="references.html#refsRFC1345">[RFC1345]</a>
1496: <a href="references.html#refsWIN1254">[WIN1254]</a>
1497: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1498: <a href="references.html#refsISO885911">[ISO885911]</a>
1499: <a href="references.html#refsWIN874">[WIN874]</a>
1500: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1501: <a href="references.html#refsRFC1345">[RFC1345]</a>
1502: <a href="references.html#refsWIN949">[WIN949]</a>
1503: </td></tr><tr><td> Shift_JIS </td><td> windows-31J </td><td>
1504: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1505: <a href="references.html#refsWIN31J">[WIN31J]</a>
1506: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1507: <a href="references.html#refsTIS620">[TIS620]</a>
1508: <a href="references.html#refsWIN874">[WIN874]</a>
1509: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1510: <a href="references.html#refsRFC1345">[RFC1345]</a>
1511: <a href="references.html#refsWIN1252">[WIN1252]</a>
1512: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1513: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1514: violation</a> of the W3C Character Model specification, motivated
1515: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1516:
1517: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1518: been found, user agents must default to UTF-16LE.</p>
1519:
1520: <p class="note">The requirement to default UTF-16 to LE rather than
1521: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1522: desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1523:
1524: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1525: 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>
1526:
1527: <p>Support for encodings based on EBCDIC is not recommended. This
1528: encoding is rarely used for publicly-facing Web content.</p>
1529:
1530: <p>Support for UTF-32 is not recommended. This encoding is rarely
1531: used, and frequently implemented incorrectly.</p>
1532:
1533: <p class="note">This specification does not make any attempt to
1534: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1535: and use of these encodings can thus lead to unexpected behavior in
1536: implementations of this specification.</p>
1537:
1538:
1539:
1540: <h5 id="preprocessing-the-input-stream"><span class="secno">9.2.2.3 </span>Preprocessing the input stream</h5>
1.1 mike 1541:
1542: <p>Given an encoding, the bytes in the input stream must be
1543: converted to Unicode characters for the tokenizer, as described by
1544: the rules for that encoding, except that the leading U+FEFF BYTE
1545: ORDER MARK character, if any, must not be stripped by the encoding
1546: layer (it is stripped by the rule below).</p> <!-- this is to
1547: prevent two leading BOMs from being both stripped, once by the
1548: decoder, and once by the parser -->
1549:
1550: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1551: could not be converted to Unicode code points must be converted to
1552: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1553:
1554: <p class="note">Bytes or sequences of bytes in the original byte
1555: stream that did not conform to the encoding specification
1556: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1557: errors that conformance checkers are expected to report.</p>
1558:
1.438 mike 1559: <p>Any byte or sequence of bytes in the original byte stream that is
1560: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1561: error</a>.</p>
1562:
1563: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1564: any are present.</p>
1565:
1.300 mike 1566: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1567: character regardless of whether that character was used to determine
1568: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1569: motivated by a desire to increase the resilience of user agents in
1570: the face of naïve transcoders.</p>
1571:
1.316 mike 1572: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1573: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1574: them to suddenly turn into codepoints when they go through a UTF-16
1575: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1576: CHARACTERs. Any occurrences of such characters and code points are
1577: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1578:
1579: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1580: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1581: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1582: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1583: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1584: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1585: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1586: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1587: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1588: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1589: errors</a>. These are all control characters or permanently
1590: undefined Unicode characters (noncharacters).</p>
1.1 mike 1591:
1592: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1593: characters are treated specially. Any CR characters that are
1594: followed by LF characters must be removed, and any CR characters not
1595: followed by LF characters must be converted to LF characters. Thus,
1596: newlines in HTML DOMs are represented by LF characters, and there
1597: are never any CR characters in the input to the
1598: <a href="#tokenization">tokenization</a> stage.</p>
1599:
1600: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1601: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1602: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1603: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1604: to have been <i><a href="#consumed">consumed</a></i>.</p>
1605:
1606: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1607: character or just before the end of the input stream) where content
1.159 mike 1608: 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 1609: inserted. The insertion point is relative to the position of the
1610: character immediately after it, it is not an absolute offset into
1611: the input stream. Initially, the insertion point is
1.10 mike 1612: undefined.</p>
1.1 mike 1613:
1614: <p>The "EOF" character in the tables below is a conceptual character
1615: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1616: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1617: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1618: 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 1619: consumed. Otherwise, the "EOF" character is not a real character in
1620: the stream, but rather the lack of any further characters.</p>
1621:
1622:
1.237 mike 1623: <h5 id="changing-the-encoding-while-parsing"><span class="secno">9.2.2.4 </span>Changing the encoding while parsing</h5>
1.1 mike 1624:
1625: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1626: encoding</dfn>, it must run the following steps. This might happen
1627: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1628: failed to find an encoding, or if it found an encoding that was not
1629: the actual encoding of the file.</p>
1630:
1631: <ol><li>If the new encoding is identical or equivalent to the encoding
1632: that is already being used to interpret the input stream, then set
1633: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1634: <i>certain</i> and abort these steps. This happens when the
1635: encoding information found in the file matches what the
1636: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1637: encoding, and in the second pass through the parser if the first
1638: pass found that the encoding sniffing algorithm described in the
1639: earlier section failed to find the right encoding.</li>
1640:
1641: <li>If the encoding that is already being used to interpret the
1642: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1643: <i>certain</i> and abort these steps. The new encoding is ignored;
1644: if it was anything but the same encoding, then it would be clearly
1645: incorrect.</li>
1646:
1647: <li>If the new encoding is a UTF-16 encoding, change it to
1648: UTF-8.</li>
1649:
1650: <li>If all the bytes up to the last byte converted by the current
1651: decoder have the same Unicode interpretations in both the current
1652: encoding and the new encoding, and if the user agent supports
1653: changing the converter on the fly, then the user agent may change
1654: to the new converter for the encoding on the fly. Set the
1655: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1656: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1657: <i>certain</i>, and abort these steps.</li>
1658:
1659: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1660: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1661: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1662: sniffing algorithm</a> and instead just set the encoding to the
1663: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1664: <i>certain</i>. Whenever possible, this should be done without
1665: actually contacting the network layer (the bytes should be
1666: re-parsed from memory), even if, e.g., the document is marked as
1667: not being cacheable. If this is not possible and contacting the
1668: network layer would involve repeating a request that uses a method
1669: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1670: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1671: <i>certain</i> and ignore the new encoding. The resource will be
1672: misinterpreted. User agents may notify the user of the situation,
1673: to aid in application development.</li>
1674:
1.266 mike 1675: </ol></div><div class="impl">
1676:
1677: <h4 id="parse-state"><span class="secno">9.2.3 </span>Parse state</h4>
1.1 mike 1678:
1679: <h5 id="the-insertion-mode"><span class="secno">9.2.3.1 </span>The insertion mode</h5>
1680:
1681: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1682: the primary operation of the tree construction stage.</p>
1683:
1684: <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
1685: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1686: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1687: "<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 1688: "<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 1689: "<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>",
1690: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1691: "<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
1692: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1693: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1694: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1695: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1696: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1697: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1698: frameset</a>" during the course of the parsing, as described in
1699: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1700: how tokens are processed and whether CDATA sections are
1701: supported.</p>
1702:
1703: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1704: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1705: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1706: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1707: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1708: "<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
1709: that the other modes defer to them at various times. When the
1710: algorithm below says that the user agent is to do something
1711: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1712: mode", where <var title="">m</var> is one of these modes, the user
1713: agent must use the rules described under the <var title="">m</var>
1714: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1715: <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>
1716: to a new value.</p>
1717:
1718: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1719: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1720: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1721: is also set. This is the insertion mode to which the tree
1722: construction stage will return.</p>
1.1 mike 1723:
1724: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1725: mode: in foreign content">in foreign content</a>", the
1726: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1727: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1728: foreign content">in foreign content</a>" mode to handle HTML
1729: (i.e. not foreign) content.</p>
1730:
1731: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1732: mode appropriately</dfn>, it means the UA must follow these
1733: steps:</p>
1734:
1735: <ol><li>Let <var title="">last</var> be false.</li>
1736:
1737: <li>Let <var title="">node</var> be the last node in the
1738: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1739:
1740: <li>If <var title="">node</var> is the first node in the stack of
1741: open elements, then set <var title="">last</var> to true and set
1742: <var title="">node</var> to the <var title="">context</var>
1743: element. (<a href="#fragment-case">fragment case</a>)</li>
1744:
1745: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1746: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" and abort these
1747: steps. (<a href="#fragment-case">fragment case</a>)</li>
1748:
1749: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1750: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1751: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1752: mode: in cell">in cell</a>" and abort these steps.</li>
1753:
1754: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1755: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1756: mode: in row">in row</a>" and abort these steps.</li>
1757:
1758: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1759: <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
1760: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1761: table body">in table body</a>" and abort these steps.</li>
1762:
1763: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1764: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>" and abort
1765: these steps.</li>
1766:
1767: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1768: 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
1769: abort these steps. (<a href="#fragment-case">fragment case</a>)</li>
1770:
1771: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1772: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" and abort these
1773: steps.</li>
1774:
1775: <li>If <var title="">node</var> is an element from the <a href="#mathml-namespace">MathML
1776: namespace</a> or the <a href="#svg-namespace">SVG namespace</a>, then switch the
1777: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1778: foreign content">in foreign content</a>", let the
1779: <a href="#secondary-insertion-mode">secondary insertion mode</a> be "<a href="#parsing-main-inbody" title="insertion
1780: mode: in body">in body</a>", and abort these steps.</li>
1781:
1.159 mike 1782: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.1 mike 1783: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" ("<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>"! <em> not "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>"</em>!) and abort
1784: these steps. (<a href="#fragment-case">fragment case</a>)</li> <!-- This is only
1785: here for now in case people think that the spec accidentally
1786: omitted it and try to "fix" it. Note that noscript-in-head is also
1787: handled this way. This is all intentional. The only thing it
1788: doesn't handle is the scripting-disabled fragment parsing case for
1789: a <head> element containing a <noscript> which itself contains
1790: something other than a <link> or a <style> element; you'd expect
1791: that to break out of the <noscript> but it doesn't. This is an edge
1792: case that doesn't affect the spec, since the algorithm for fragment
1793: parsing is only used for innerHTML/outerHTML/insertAdjacentHTML(),
1.333 mike 1794: where we know scripting is enabled. -->
1.1 mike 1795:
1.159 mike 1796: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.1 mike 1797: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and abort these
1798: steps.</li>
1799:
1.5 mike 1800: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.1 mike 1801: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>" and abort
1802: these steps. (<a href="#fragment-case">fragment case</a>)</li>
1803:
1.159 mike 1804: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1805: then <!--: if the <span><code title="">head</code> element
1806: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1807: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1808: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1809: to "<span title="insertion mode: after head">after head</span>".-->
1810: Then, <!-- in either case, --> abort these steps. (<a href="#fragment-case">fragment
1811: case</a>)</li> <!-- if the head element pointer can ever be
1812: non-null when we're going through these steps, we'll need to
1813: uncomment out the commented-out bits -->
1.1 mike 1814:
1815: <li>If <var title="">last</var> is true, then switch the
1816: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1817: body">in body</a>" and abort these steps. (<a href="#fragment-case">fragment
1818: case</a>)</li>
1819:
1820: <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
1821: elements</a>.</li>
1822:
1823: <li>Return to step 3.</li>
1824:
1825: </ol><h5 id="the-stack-of-open-elements"><span class="secno">9.2.3.2 </span>The stack of open elements</h5>
1826:
1827: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1828: stack grows downwards; the topmost node on the stack is the first
1829: one added to the stack, and the bottommost node of the stack is the
1830: most recently added node in the stack (notwithstanding when the
1831: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1832:
1833: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1834: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1835: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1836: stack.</p>
1837:
1838: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1839: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1840: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1841: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1842: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1843: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1844:
1.159 mike 1845: <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 1846: node of the stack. It never gets popped off the stack.</p>
1847:
1848: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1849: stack.</p>
1850:
1851: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1852: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1853: 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
1854: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1855: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1856: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1857:
1858: <p>Elements in the stack fall into the following categories:</p>
1859:
1860: <dl><dt><dfn id="special">Special</dfn></dt>
1861:
1862: <dd><p>The following HTML elements have varying levels of special
1863: 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>,
1864: <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 1865: <code><a href="obsolete.html#basefont">basefont</a></code>, <code>bgsound</code>,
1.159 mike 1866: <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 1867: <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 1868: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID--><code>datagrid</code>,
1.422 mike 1869: <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>,
1870: <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>,
1871: <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>,
1872: <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>,
1873: <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>,
1874: <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>,
1875: <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>,
1876: <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>,
1877: (commented out because this isn't an element that can end up on the
1878: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
1879: <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>,
1880: <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>,
1881: <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>,
1882: <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>,
1883: <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>,
1884: <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>,
1885: <code><a href="forms.html#the-select-element">select</a></code>, <code><a href="obsolete.html#spacer">spacer</a></code>, <code><a href="semantics.html#the-style-element">style</a></code>,
1886: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>,
1887: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, <code><a href="semantics.html#the-title-element-0">title</a></code>, <code><a href="tabular-data.html#the-tr-element">tr</a></code>,
1888: <code><a href="semantics.html#the-ul-element">ul</a></code>, <code>wbr</code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 1889:
1890: <dt><dfn id="scoping">Scoping</dfn></dt>
1891: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
1892: an element in scope">scopes</a> for various parts of the
1.5 mike 1893: 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 1894: <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>,
1895: <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 1896: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
1897:
1898: <dt><dfn id="formatting">Formatting</dfn></dt>
1899: <dd><p>The following HTML elements are those that end up in the
1900: <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 1901: <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>,
1902: <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>,
1903: <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>,
1904: <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
1905: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 1906:
1907: <dt><dfn id="phrasing">Phrasing</dfn></dt>
1908: <dd><p>All other elements found while parsing an HTML
1909: document.</p></dd>
1910:
1.234 mike 1911: </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
1912: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
1913: match state:</p>
1.1 mike 1914:
1915: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
1916: node</a> (the bottommost node of the stack).</p></li>
1917:
1918: <li><p>If <var title="">node</var> is the target node, terminate in
1919: a match state.</p></li>
1920:
1.234 mike 1921: <li><p>Otherwise, if <var title="">node</var> is one of the element
1922: types in <var title="">list</var>, terminate in a failure
1923: state.</p></li>
1.1 mike 1924:
1925: <li><p>Otherwise, set <var title="">node</var> to the previous
1926: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
1927: 2. (This will never fail, since the loop will always terminate in
1928: the previous step if the top of the stack — an
1.159 mike 1929: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 1930:
1.234 mike 1931: </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
1932: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
1933: of the following element types:</p>
1934:
1935: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
1936: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
1937: <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.) -->
1938: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
1939: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
1940: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
1941: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
1942: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
1943: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
1944: <li><code title="">foreignObject</code> in the SVG namespace</li>
1945: </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
1946: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
1947: scope</a> consisting of the following element types:</p>
1948:
1949: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
1950: in scope</a></i> algorithm.</li>
1951: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
1952: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
1953: </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
1954: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
1955: scope</a> consisting of the following element types:</p>
1956:
1957: <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.) -->
1958: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
1959: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 1960: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
1961: or removed from, the <code>Document</code> tree. In particular, the
1962: stack is not changed in this situation. This can cause, amongst
1963: other strange effects, content to be appended to nodes that are no
1964: longer in the DOM.</p>
1965:
1966: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
1967: the stack is manipulated in a random-access fashion.</p>
1968:
1969:
1970: <h5 id="the-list-of-active-formatting-elements"><span class="secno">9.2.3.3 </span>The list of active formatting elements</h5>
1971:
1972: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
1973: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
1974:
1975: <p>The list contains elements in the <a href="#formatting">formatting</a>
1976: category, and scope markers. The scope markers are inserted when
1.159 mike 1977: 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 1978: elements, marquees, table cells, and table captions, and are used to
1.5 mike 1979: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 1980: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 1981: tables.</p>
1982:
1983: <p class="note">The scope markers are unrelated to the concept of an
1984: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
1985: scope</a>.</p>
1986:
1987: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
1988: elements</a> is associated with the token for which it was
1989: created, so that further elements can be created for that token if
1990: necessary.</p>
1991:
1992: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
1993: active formatting elements</dfn>, the UA must perform the following
1994: steps:</p>
1995:
1996: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
1997: elements</a>, then there is nothing to reconstruct; stop this
1998: algorithm.</li>
1999:
2000: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2001: active formatting elements</a> is a marker, or if it is an
2002: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2003: there is nothing to reconstruct; stop this algorithm.</li>
2004:
2005: <li>Let <var title="">entry</var> be the last (most recently added)
2006: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2007: elements</a>.</li>
2008:
2009: <li>If there are no entries before <var title="">entry</var> in the
2010: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2011: 8.</li>
2012:
2013: <li>Let <var title="">entry</var> be the entry one earlier than
2014: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2015: elements</a>.</li>
2016:
2017: <li>If <var title="">entry</var> is neither a marker nor an element
2018: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2019: 4.</li>
2020:
2021: <li>Let <var title="">entry</var> be the element one later than
2022: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2023: elements</a>.</li>
2024:
2025: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2026: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2027:
2028: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2029: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2030: elements</a> so that it is the new <a href="#current-node">current
2031: node</a>.</li>
2032:
2033: <li>Replace the entry for <var title="">entry</var> in the list
2034: with an entry for <var title="">new element</var>.</li>
2035:
2036: <li>If the entry for <var title="">new element</var> in the
2037: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2038: entry in the list, return to step 7.</li>
2039:
2040: </ol><p>This has the effect of reopening all the formatting elements that
2041: were opened in the current body, cell, or caption (whichever is
2042: youngest) that haven't been explicitly closed.</p>
2043:
2044: <p class="note">The way this specification is written, the
2045: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2046: elements in chronological order with the least recently added
2047: element first and the most recently added element last (except for
2048: while steps 8 to 11 of the above algorithm are being executed, of
2049: course).</p>
2050:
2051: <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
2052: active formatting elements up to the last marker</dfn>, the UA must
2053: perform the following steps:</p>
2054:
2055: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2056: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2057:
2058: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2059: formatting elements</a>.</li>
2060:
2061: <li>If <var title="">entry</var> was a marker, then stop the
2062: algorithm at this point. The list has been cleared up to the last
2063: marker.</li>
2064:
2065: <li>Go to step 1.</li>
2066:
2067: </ol><h5 id="the-element-pointers"><span class="secno">9.2.3.4 </span>The element pointers</h5>
2068:
2069: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2070: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2071: pointer</dfn> are both null.</p>
2072:
1.159 mike 2073: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2074: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2075: element pointer</a> gets set to point to this node.</p>
2076:
2077: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2078: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2079: whose end tag has not yet been seen. It is used to make form
2080: controls associate with forms in the face of dramatically bad
2081: markup, for historical reasons.</p>
2082:
2083:
2084: <h5 id="other-parsing-state-flags"><span class="secno">9.2.3.5 </span>Other parsing state flags</h5>
2085:
2086: <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
2087: <code>Document</code> with which the parser is associated when the
2088: parser was created, and "disabled" otherwise.</p>
2089:
2090: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2091: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2092: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2093: don't execute in that case.</p>
2094:
2095: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2096: created. It is set to "not ok" after certain tokens are seen.</p>
2097:
1.266 mike 2098: </div><div class="impl">
1.1 mike 2099:
1.159 mike 2100: <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 2101:
2102: <p>Implementations must act as if they used the following state
2103: machine to tokenize HTML. The state machine must start in the
2104: <a href="#data-state">data state</a>. Most states consume a single character,
2105: which may have various side-effects, and either switches the state
2106: machine to a new state to <em>reconsume</em> the same character, or
2107: switches it to a new state (to consume the next character), or
2108: repeats the same state (to consume the next character). Some states
2109: have more complicated behavior and can consume several characters
1.541 mike 2110: before switching to another state. In some cases, the tokenizer
2111: state is also changed by the tree construction stage.</p>
1.1 mike 2112:
1.541 mike 2113: <p>The exact behavior of certain states depends on the
2114: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2115: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2116: buffer</var></dfn> to track progress.</p>
1.1 mike 2117:
2118: <p>The output of the tokenization step is a series of zero or more
2119: of the following tokens: DOCTYPE, start tag, end tag, comment,
2120: character, end-of-file. DOCTYPE tokens have a name, a public
2121: identifier, a system identifier, and a <i>force-quirks
2122: flag</i>. When a DOCTYPE token is created, its name, public
2123: identifier, and system identifier must be marked as missing (which
2124: is a distinct state from the empty string), and the <i>force-quirks
2125: flag</i> must be set to <i>off</i> (its other state is
2126: <i>on</i>). Start and end tag tokens have a tag name, a
2127: <i>self-closing flag</i>, and a list of attributes, each of which
2128: has a name and a value. When a start or end tag token is created,
2129: its <i>self-closing flag</i> must be unset (its other state is that
2130: it be set), and its attributes list must be empty. Comment and
2131: character tokens have data.</p>
2132:
2133: <p>When a token is emitted, it must immediately be handled by the
2134: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2135: can affect the state of the tokenization stage, and can insert
2136: additional characters into the stream. (For example, the
1.1 mike 2137: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2138: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2139: characters into the stream being tokenized.)</p>
2140:
2141: <p>When a start tag token is emitted with its <i>self-closing
2142: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2143: self-closing flag">acknowledged</dfn> when it is processed by the
2144: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2145:
2146: <p>When an end tag token is emitted with attributes, that is a
2147: <a href="#parse-error">parse error</a>.</p>
2148:
2149: <p>When an end tag token is emitted with its <i>self-closing
2150: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2151:
1.541 mike 2152: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2153: tag name matches the tag name of the last start tag to have been
2154: emitted from this tokenizer, if any. If no start tag has been
2155: emitted from this tokenizer, then no end tag token is
2156: appropriate.</p>
2157:
1.1 mike 2158: <p>Before each step of the tokenizer, the user agent must first
2159: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2160: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2161: tokenizer, yielding control back to the caller.</p>
1.1 mike 2162:
2163: <p>The tokenizer state machine consists of the states defined in the
2164: following subsections.</p>
2165:
1.541 mike 2166:
1.333 mike 2167: <!-- Order of the lists below is supposed to be non-error then
2168: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2169:
1.541 mike 2170:
1.1 mike 2171: <h5 id="data-state"><span class="secno">9.2.4.1 </span><dfn>Data state</dfn></h5>
2172:
2173: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2174:
2175: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2176: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2177: state</a>.</dd>
1.1 mike 2178:
1.541 mike 2179: <dt>U+003C LESS-THAN SIGN (<)</dt>
2180: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2181:
2182: <dt>EOF</dt>
2183: <dd>Emit an end-of-file token.</dd>
2184:
2185: <dt>Anything else</dt>
2186: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2187: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2188:
1.541 mike 2189: </dl><h5 id="rcdata-state"><span class="secno">9.2.4.2 </span><dfn>RCDATA state</dfn></h5>
1.1 mike 2190:
1.541 mike 2191: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2192:
1.541 mike 2193: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
2194: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
2195: state</a>.</dd>
1.1 mike 2196:
2197: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2198: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2199:
2200: <dt>EOF</dt>
2201: <dd>Emit an end-of-file token.</dd>
1.1 mike 2202:
1.541 mike 2203: <dt>Anything else</dt>
2204: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2205: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2206:
1.541 mike 2207: </dl><h5 id="rawtext-state"><span class="secno">9.2.4.3 </span><dfn>RAWTEXT state</dfn></h5>
1.1 mike 2208:
1.541 mike 2209: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2210:
1.541 mike 2211: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2212: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2213:
2214: <dt>EOF</dt>
2215: <dd>Emit an end-of-file token.</dd>
2216:
2217: <dt>Anything else</dt>
1.541 mike 2218: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2219: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2220:
1.541 mike 2221: </dl><h5 id="script-data-state"><span class="secno">9.2.4.4 </span><dfn>Script data state</dfn></h5>
1.1 mike 2222:
1.541 mike 2223: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2224:
1.541 mike 2225: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2226: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2227:
1.541 mike 2228: <dt>EOF</dt>
2229: <dd>Emit an end-of-file token.</dd>
1.1 mike 2230:
1.541 mike 2231: <dt>Anything else</dt>
2232: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2233: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2234:
1.541 mike 2235: </dl><h5 id="plaintext-state"><span class="secno">9.2.4.5 </span><dfn>PLAINTEXT state</dfn></h5>
1.1 mike 2236:
1.541 mike 2237: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2238:
1.541 mike 2239: <dl class="switch"><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="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2245:
1.541 mike 2246: </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 2247:
1.541 mike 2248: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2249: <a href="#additional-allowed-character">additional allowed character</a>.</p>
1.1 mike 2250:
1.541 mike 2251: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2252: token.</p>
1.1 mike 2253:
1.541 mike 2254: <p>Otherwise, emit the character token that was returned.</p>
1.1 mike 2255:
1.541 mike 2256: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
1.1 mike 2257:
2258:
1.541 mike 2259: <h5 id="tag-open-state"><span class="secno">9.2.4.7 </span><dfn>Tag open state</dfn></h5>
1.1 mike 2260:
1.541 mike 2261: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2262:
1.541 mike 2263: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2264: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2265:
1.541 mike 2266: <dt>U+002F SOLIDUS (/)</dt>
2267: <dd>Switch to the <a href="#close-tag-open-state">close tag open state</a>.</dd>
1.1 mike 2268:
1.541 mike 2269: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2270: <dd>Create a new start tag token, set its tag name to the
2271: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2272: character's code point), then switch to the <a href="#tag-name-state">tag name
2273: state</a>. (Don't emit the token yet; further details will
2274: be filled in before it is emitted.)</dd>
1.1 mike 2275:
1.541 mike 2276: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2277: <dd>Create a new start tag token, set its tag name to the
2278: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2279: name state</a>. (Don't emit the token yet; further details will
2280: be filled in before it is emitted.)</dd>
1.1 mike 2281:
1.541 mike 2282: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2283: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2284: character token and a U+003E GREATER-THAN SIGN character
2285: token. Switch to the <a href="#data-state">data state</a>.</dd>
1.1 mike 2286:
1.541 mike 2287: <dt>U+003F QUESTION MARK (?)</dt>
2288: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2289: comment state</a>.</dd>
1.1 mike 2290:
1.541 mike 2291: <dt>Anything else</dt>
2292: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2293: character token and reconsume the <a href="#current-input-character">current input
2294: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2295:
1.541 mike 2296: </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 2297:
1.541 mike 2298: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2299:
2300: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2301: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2302: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2303: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2304: state</a>. (Don't emit the token yet; further details will be
2305: filled in before it is emitted.)</dd>
2306:
2307: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2308: <dd>Create a new end tag token, set its tag name to the
2309: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2310: name state</a>. (Don't emit the token yet; further details will
2311: be filled in before it is emitted.)</dd>
1.1 mike 2312:
2313: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2314: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2315: state</a>.</dd>
2316:
2317: <dt>EOF</dt>
2318: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2319: character token and a U+002F SOLIDUS character token. Reconsume
2320: the EOF character in the <a href="#data-state">data state</a>.</dd>
2321:
2322: <dt>Anything else</dt>
2323: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2324: comment state</a>.</dd>
2325:
1.541 mike 2326: </dl><h5 id="tag-name-state"><span class="secno">9.2.4.9 </span><dfn>Tag name state</dfn></h5>
1.1 mike 2327:
2328: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2329:
2330: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2331: <dt>U+000A LINE FEED (LF)</dt>
2332: <dt>U+000C FORM FEED (FF)</dt>
2333: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2334: <dt>U+0020 SPACE</dt>
2335: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2336:
2337: <dt>U+002F SOLIDUS (/)</dt>
2338: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2339:
2340: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2341: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2342: state</a>.</dd>
2343:
2344: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2345: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2346: character</a> (add 0x0020 to the character's code point) to the
2347: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2348: state</a>.</dd>
2349:
2350: <dt>EOF</dt>
2351: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2352: <a href="#data-state">data state</a>.</dd>
2353:
2354: <dt>Anything else</dt>
2355: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2356: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2357:
2358: </dl><h5 id="rcdata-less-than-sign-state"><span class="secno">9.2.4.10 </span><dfn>RCDATA less-than sign state</dfn></h5>
2359: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2360:
2361: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2362:
2363: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2364: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2365: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2366:
2367: <dt>Anything else</dt>
2368: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2369: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2370: state</a>.</dd>
2371:
2372: </dl><h5 id="rcdata-end-tag-open-state"><span class="secno">9.2.4.11 </span><dfn>RCDATA end tag open state</dfn></h5>
2373: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2374:
2375: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2376:
2377: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2378: <dd>Create a new end tag token, and set its tag name to the
2379: lowercase version of the <a href="#current-input-character">current input character</a> (add
2380: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2381: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2382: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2383: the token yet; further details will be filled in before it is
2384: emitted.)</dd>
2385:
2386: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2387: <dd>Create a new end tag token, and set its tag name to the
2388: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2389: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2390: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2391: the token yet; further details will be filled in before it is
2392: emitted.)</dd>
2393:
2394: <dt>Anything else</dt>
2395: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2396: character token, and reconsume the <a href="#current-input-character">current input
2397: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2398:
2399: </dl><h5 id="rcdata-end-tag-name-state"><span class="secno">9.2.4.12 </span><dfn>RCDATA end tag name state</dfn></h5>
2400: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2401:
2402: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2403:
2404: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2405: <dt>U+000A LINE FEED (LF)</dt>
2406: <dt>U+000C FORM FEED (FF)</dt>
2407: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2408: <dt>U+0020 SPACE</dt>
2409: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2410: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2411: state</a>. Otherwise, treat it as per the "anything else" entry
2412: below.</dd>
2413:
2414: <dt>U+002F SOLIDUS (/)</dt>
2415: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2416: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2417: state</a>. Otherwise, treat it as per the "anything else" entry
2418: below.</dd>
2419:
2420: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2421: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2422: token</a>, then emit the current tag token and switch to the
2423: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2424: else" entry below.</dd>
2425:
2426: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2427: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2428: character</a> (add 0x0020 to the character's code point) to the
2429: current tag token's tag name. Append the <a href="#current-input-character">current input
2430: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2431: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2432:
2433: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2434: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2435: tag token's tag name. Append the <a href="#current-input-character">current input
2436: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2437: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2438:
2439: <dt>Anything else</dt>
2440: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2441: character token, a character token for each of the characters in
2442: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2443: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2444: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2445:
2446: </dl><h5 id="rawtext-less-than-sign-state"><span class="secno">9.2.4.13 </span><dfn>RAWTEXT less-than sign state</dfn></h5>
2447: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2448:
2449: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2450:
2451: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2452: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2453: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2454:
2455: <dt>Anything else</dt>
2456: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2457: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2458: state</a>.</dd>
2459:
2460: </dl><h5 id="rawtext-end-tag-open-state"><span class="secno">9.2.4.14 </span><dfn>RAWTEXT end tag open state</dfn></h5>
2461: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2462:
2463: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2464:
2465: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2466: <dd>Create a new end tag token, and set its tag name to the
2467: lowercase version of the <a href="#current-input-character">current input character</a> (add
2468: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2469: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2470: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2471: the token yet; further details will be filled in before it is
2472: emitted.)</dd>
2473:
2474: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2475: <dd>Create a new end tag token, and set its tag name to the
2476: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2477: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2478: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2479: the token yet; further details will be filled in before it is
2480: emitted.)</dd>
2481:
2482: <dt>Anything else</dt>
2483: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2484: character token, and reconsume the <a href="#current-input-character">current input
2485: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2486:
2487: </dl><h5 id="rawtext-end-tag-name-state"><span class="secno">9.2.4.15 </span><dfn>RAWTEXT end tag name state</dfn></h5>
2488: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2489:
2490: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2491:
2492: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2493: <dt>U+000A LINE FEED (LF)</dt>
2494: <dt>U+000C FORM FEED (FF)</dt>
2495: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2496: <dt>U+0020 SPACE</dt>
2497: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2498: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2499: state</a>. Otherwise, treat it as per the "anything else" entry
2500: below.</dd>
2501:
2502: <dt>U+002F SOLIDUS (/)</dt>
2503: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2504: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2505: state</a>. Otherwise, treat it as per the "anything else" entry
2506: below.</dd>
2507:
2508: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2509: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2510: token</a>, then emit the current tag token and switch to the
2511: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2512: else" entry below.</dd>
2513:
2514: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2515: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2516: character</a> (add 0x0020 to the character's code point) to the
2517: current tag token's tag name. Append the <a href="#current-input-character">current input
2518: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2519: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2520:
2521: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2522: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2523: tag token's tag name. Append the <a href="#current-input-character">current input
2524: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2525: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2526:
2527: <dt>Anything else</dt>
2528: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2529: character token, a character token for each of the characters in
2530: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2531: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2532: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2533:
2534: </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>
2535:
2536: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2537:
2538: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2539: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2540: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2541:
2542: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2543: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2544: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2545: escape start state</a>.</dd>
2546:
2547: <dt>Anything else</dt>
2548: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2549: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2550: state</a>.</dd>
2551:
2552: </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>
2553: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2554:
2555: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2556:
2557: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2558: <dd>Create a new end tag token, and set its tag name to the
2559: lowercase version of the <a href="#current-input-character">current input character</a> (add
2560: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2561: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2562: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2563: the token yet; further details will be filled in before it is
2564: emitted.)</dd>
2565:
2566: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2567: <dd>Create a new end tag token, and set its tag name to the
2568: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2569: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2570: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2571: the token yet; further details will be filled in before it is
2572: emitted.)</dd>
2573:
2574: <dt>Anything else</dt>
2575: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2576: character token, and reconsume the <a href="#current-input-character">current input
2577: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2578:
2579: </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>
2580: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2581:
2582: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2583:
2584: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2585: <dt>U+000A LINE FEED (LF)</dt>
2586: <dt>U+000C FORM FEED (FF)</dt>
2587: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2588: <dt>U+0020 SPACE</dt>
2589: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2590: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2591: state</a>. Otherwise, treat it as per the "anything else" entry
2592: below.</dd>
2593:
2594: <dt>U+002F SOLIDUS (/)</dt>
2595: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2596: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2597: state</a>. Otherwise, treat it as per the "anything else" entry
2598: below.</dd>
2599:
2600: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2601: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2602: token</a>, then emit the current tag token and switch to the
2603: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2604: else" entry below.</dd>
2605:
2606: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2607: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2608: character</a> (add 0x0020 to the character's code point) to the
2609: current tag token's tag name. Append the <a href="#current-input-character">current input
2610: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2611: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2612:
2613: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2614: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2615: tag token's tag name. Append the <a href="#current-input-character">current input
2616: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2617: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2618:
2619: <dt>Anything else</dt>
2620: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2621: character token, a character token for each of the characters in
2622: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2623: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2624: in the <a href="#script-data-state">script data state</a>.</dd>
2625:
2626: </dl><h5 id="script-data-escape-start-state"><span class="secno">9.2.4.19 </span><dfn>Script data escape start state</dfn></h5>
2627:
2628: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2629:
2630: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2631: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2632: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2633:
2634: <dt>Anything else</dt>
2635: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2636: <a href="#script-data-state">script data state</a>.</dd>
2637:
2638: </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>
2639:
2640: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2641:
2642: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2643: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2644: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2645:
2646: <dt>Anything else</dt>
2647: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2648: <a href="#script-data-state">script data state</a>.</dd>
2649:
2650: </dl><h5 id="script-data-escaped-state"><span class="secno">9.2.4.21 </span><dfn>Script data escaped state</dfn></h5>
2651:
2652: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2653:
2654: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2655: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2656: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2657:
1.542 mike 2658: <dt>U+003C LESS-THAN SIGN (<)</dt>
2659: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2660: state</a>.</p></dd>
2661:
1.541 mike 2662: <dt>EOF</dt>
2663: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2664: <a href="#data-state">data state</a>.</dd>
2665:
2666: <dt>Anything else</dt>
1.542 mike 2667: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2668: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2669:
2670: </dl><h5 id="script-data-escaped-dash-state"><span class="secno">9.2.4.22 </span><dfn>Script data escaped dash state</dfn></h5>
2671:
2672: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2673:
2674: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2675: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2676: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2677:
1.542 mike 2678: <dt>U+003C LESS-THAN SIGN (<)</dt>
2679: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2680: state</a>.</p></dd>
2681:
1.541 mike 2682: <dt>EOF</dt>
2683: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2684: <a href="#data-state">data state</a>.</dd>
2685:
2686: <dt>Anything else</dt>
1.542 mike 2687: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2688: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2689:
2690: </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>
2691:
2692: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2693:
2694: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2695: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2696: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2697:
1.542 mike 2698: <dt>U+003C LESS-THAN SIGN (<)</dt>
2699: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2700: state</a>.</p></dd>
2701:
1.541 mike 2702: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2703: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2704: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2705:
2706: <dt>EOF</dt>
2707: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2708: <a href="#data-state">data state</a>.</dd>
2709:
2710: <dt>Anything else</dt>
1.542 mike 2711: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2712: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2713:
2714: </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>
2715:
2716: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2717:
2718: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2719: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2720: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2721:
2722: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2723: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2724: <a href="#current-input-character">current input character</a> as a character token. Set the
2725: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2726: lowercase version of the <a href="#current-input-character">current input character</a> (add
2727: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2728: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2729: state</a>.</dd>
2730:
2731: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2732: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2733: <a href="#current-input-character">current input character</a> as a character token. Set the
2734: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2735: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2736: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2737: state</a>.</dd>
2738:
2739: <dt>Anything else</dt>
2740: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2741: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2742: escaped state</a>.</dd>
2743:
2744: </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>
2745:
2746: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2747:
2748: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2749: <dd>Create a new end tag token, and set its tag name to the
2750: lowercase version of the <a href="#current-input-character">current input character</a> (add
2751: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2752: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2753: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2754: state</a>. (Don't emit the token yet; further details will be
2755: filled in before it is emitted.)</dd>
2756:
2757: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2758: <dd>Create a new end tag token, and set its tag name to the
2759: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2760: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2761: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2762: state</a>. (Don't emit the token yet; further details will be
2763: filled in before it is emitted.)</dd>
2764:
2765: <dt>Anything else</dt>
2766: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2767: character token, and reconsume the <a href="#current-input-character">current input
2768: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2769:
2770: </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>
2771:
2772: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2773:
2774: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2775: <dt>U+000A LINE FEED (LF)</dt>
2776: <dt>U+000C FORM FEED (FF)</dt>
2777: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2778: <dt>U+0020 SPACE</dt>
2779: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2780: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2781: state</a>. Otherwise, treat it as per the "anything else" entry
2782: below.</dd>
2783:
2784: <dt>U+002F SOLIDUS (/)</dt>
2785: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2786: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2787: state</a>. Otherwise, treat it as per the "anything else" entry
2788: below.</dd>
2789:
2790: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2791: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2792: token</a>, then emit the current tag token and switch to the
2793: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2794: else" entry below.</dd>
2795:
2796: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2797: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2798: character</a> (add 0x0020 to the character's code point) to the
2799: current tag token's tag name. Append the <a href="#current-input-character">current input
2800: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2801: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2802:
2803: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2804: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2805: tag token's tag name. Append the <a href="#current-input-character">current input
2806: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2807: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2808:
2809: <dt>Anything else</dt>
2810: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2811: character token, a character token for each of the characters in
2812: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2813: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2814: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2815:
2816: </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>
2817:
2818: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2819:
2820: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2821: <dt>U+000A LINE FEED (LF)</dt>
2822: <dt>U+000C FORM FEED (FF)</dt>
2823: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2824: <dt>U+0020 SPACE</dt>
2825: <dt>U+002F SOLIDUS (/)</dt>
2826: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2827: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2828: 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
2829: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2830: data escaped state</a>.</dd>
2831:
2832: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2833: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2834: token. Append the lowercase version of the <a href="#current-input-character">current input
2835: character</a> (add 0x0020 to the character's code point) to the
2836: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2837: escape start state</a>.</dd>
2838:
2839: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2840: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2841: token. Append the <a href="#current-input-character">current input character</a> to the
2842: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2843: escape start state</a>.</dd>
2844:
2845: <dt>Anything else</dt>
2846: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2847: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2848:
2849: </dl><h5 id="script-data-double-escaped-state"><span class="secno">9.2.4.28 </span><dfn>Script data double escaped state</dfn></h5>
2850:
2851: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2852:
2853: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2854: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2855: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2856:
2857: <dt>U+003C LESS-THAN SIGN (<)</dt>
2858: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2859: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2860: state</a>.</p></dd>
2861:
2862: <dt>EOF</dt>
2863: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2864: <a href="#data-state">data state</a>.</dd>
2865:
2866: <dt>Anything else</dt>
2867: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2868: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
2869: state</a>.</dd>
2870:
2871: </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>
2872:
2873: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2874:
2875: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2876: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2877: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2878:
2879: <dt>U+003C LESS-THAN SIGN (<)</dt>
2880: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2881: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2882: state</a>.</p></dd>
2883:
2884: <dt>EOF</dt>
2885: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2886: <a href="#data-state">data state</a>.</dd>
2887:
2888: <dt>Anything else</dt>
2889: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2890: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2891: state</a>.</dd>
2892:
2893: </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>
2894:
2895: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2896:
2897: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2898: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2899: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
2900:
2901: <dt>U+003C LESS-THAN SIGN (<)</dt>
2902: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
2903: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
2904: state</a>.</p></dd>
2905:
2906: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2907: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2908: <a href="#script-data-state">script data state</a>.</dd>
2909:
2910: <dt>EOF</dt>
2911: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2912: <a href="#data-state">data state</a>.</dd>
2913:
2914: <dt>Anything else</dt>
2915: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2916: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
2917: state</a>.</dd>
2918:
2919: </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>
2920:
2921: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2922:
2923: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2924: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
2925: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
2926: double escape end state</a>.</dd>
2927:
2928: <dt>Anything else</dt>
2929: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2930: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
2931:
2932: </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>
2933:
2934: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2935:
2936: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2937: <dt>U+000A LINE FEED (LF)</dt>
2938: <dt>U+000C FORM FEED (FF)</dt>
2939: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2940: <dt>U+0020 SPACE</dt>
2941: <dt>U+002F SOLIDUS (/)</dt>
2942: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2943: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2944: 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
2945: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
2946: double escaped state</a>.</dd>
2947:
2948: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2949: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2950: token. Append the lowercase version of the <a href="#current-input-character">current input
2951: character</a> (add 0x0020 to the character's code point) to the
2952: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
2953: escape end state</a>.</dd>
2954:
2955: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2956: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2957: token. Append the <a href="#current-input-character">current input character</a> to the
2958: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
2959: escape end state</a>.</dd>
2960:
2961: <dt>Anything else</dt>
2962: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2963: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 2964:
1.542 mike 2965: </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 2966:
2967: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2968:
2969: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2970: <dt>U+000A LINE FEED (LF)</dt>
2971: <dt>U+000C FORM FEED (FF)</dt>
2972: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2973: <dt>U+0020 SPACE</dt>
2974: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2975:
2976: <dt>U+002F SOLIDUS (/)</dt>
2977: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2978:
2979: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2980: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2981: state</a>.</dd>
2982:
2983: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2984: <dd>Start a new attribute in the current tag token. Set that
2985: attribute's name to the lowercase version of the <a href="#current-input-character">current input
2986: character</a> (add 0x0020 to the character's code point), and its
2987: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
2988: state</a>.</dd>
2989:
2990: <dt>U+0022 QUOTATION MARK (")</dt>
2991: <dt>U+0027 APOSTROPHE (')</dt>
2992: <dt>U+003C LESS-THAN SIGN (<)</dt>
2993: <dt>U+003D EQUALS SIGN (=)</dt>
2994: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
2995: entry below.</dd>
2996:
2997: <dt>EOF</dt>
2998: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2999: <a href="#data-state">data state</a>.</dd>
3000:
3001: <dt>Anything else</dt>
3002: <dd>Start a new attribute in the current tag token. Set that
3003: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3004: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3005: state</a>.</dd>
3006:
1.542 mike 3007: </dl><h5 id="attribute-name-state"><span class="secno">9.2.4.34 </span><dfn>Attribute name state</dfn></h5>
1.1 mike 3008:
3009: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3010:
3011: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3012: <dt>U+000A LINE FEED (LF)</dt>
3013: <dt>U+000C FORM FEED (FF)</dt>
3014: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3015: <dt>U+0020 SPACE</dt>
3016: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3017:
3018: <dt>U+002F SOLIDUS (/)</dt>
3019: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3020:
3021: <dt>U+003D EQUALS SIGN (=)</dt>
3022: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3023:
3024: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3025: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3026: state</a>.</dd>
3027:
3028: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3029: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3030: character</a> (add 0x0020 to the character's code point) to the
3031: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3032: state</a>.</dd>
3033:
3034: <dt>U+0022 QUOTATION MARK (")</dt>
3035: <dt>U+0027 APOSTROPHE (')</dt>
3036: <dt>U+003C LESS-THAN SIGN (<)</dt>
3037: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3038: entry below.</dd>
3039:
3040: <dt>EOF</dt>
3041: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3042: <a href="#data-state">data state</a>.</dd>
3043:
3044: <dt>Anything else</dt>
1.541 mike 3045: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3046: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3047: state</a>.</dd>
1.1 mike 3048:
3049: </dl><p>When the user agent leaves the attribute name state (and before
3050: emitting the tag token, if appropriate), the complete attribute's
3051: name must be compared to the other attributes on the same token;
3052: if there is already an attribute on the token with the exact same
3053: name, then this is a <a href="#parse-error">parse error</a> and the new
3054: attribute must be dropped, along with the value that gets
3055: associated with it (if any).</p>
3056:
3057:
1.542 mike 3058: <h5 id="after-attribute-name-state"><span class="secno">9.2.4.35 </span><dfn>After attribute name state</dfn></h5>
1.1 mike 3059:
3060: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3061:
3062: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3063: <dt>U+000A LINE FEED (LF)</dt>
3064: <dt>U+000C FORM FEED (FF)</dt>
3065: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3066: <dt>U+0020 SPACE</dt>
3067: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3068:
3069: <dt>U+002F SOLIDUS (/)</dt>
3070: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3071:
3072: <dt>U+003D EQUALS SIGN (=)</dt>
3073: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3074:
3075: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3076: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3077: state</a>.</dd>
3078:
3079: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3080: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3081: attribute's name to the lowercase version of the <a href="#current-input-character">current
3082: input character</a> (add 0x0020 to the character's code point),
3083: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3084: name state</a>.</dd>
1.1 mike 3085:
3086: <dt>U+0022 QUOTATION MARK (")</dt>
3087: <dt>U+0027 APOSTROPHE (')</dt>
3088: <dt>U+003C LESS-THAN SIGN (<)</dt>
3089: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3090: entry below.</dd>
3091:
3092: <dt>EOF</dt>
3093: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3094: <a href="#data-state">data state</a>.</dd>
3095:
3096: <dt>Anything else</dt>
3097: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3098: attribute's name to the <a href="#current-input-character">current input character</a>, and
3099: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3100: state</a>.</dd>
3101:
1.542 mike 3102: </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 3103:
3104: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3105:
3106: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3107: <dt>U+000A LINE FEED (LF)</dt>
3108: <dt>U+000C FORM FEED (FF)</dt>
3109: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3110: <dt>U+0020 SPACE</dt>
3111: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3112:
3113: <dt>U+0022 QUOTATION MARK (")</dt>
3114: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3115:
3116: <dt>U+0026 AMPERSAND (&)</dt>
3117: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3118: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3119:
3120: <dt>U+0027 APOSTROPHE (')</dt>
3121: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3122:
3123: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3124: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3125: the <a href="#data-state">data state</a>.</dd>
3126:
3127: <dt>U+003C LESS-THAN SIGN (<)</dt>
3128: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3129: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3130: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3131: entry below.</dd>
3132:
3133: <dt>EOF</dt>
3134: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3135: <a href="#data-state">data state</a>.</dd>
3136:
3137: <dt>Anything else</dt>
3138: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3139: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3140: state</a>.</dd>
3141:
1.542 mike 3142: </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 3143:
3144: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3145:
3146: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3147: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3148: state</a>.</dd>
3149:
3150: <dt>U+0026 AMPERSAND (&)</dt>
3151: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3152: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3153: being U+0022 QUOTATION MARK (").</dd>
3154:
3155: <dt>EOF</dt>
3156: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3157: <a href="#data-state">data state</a>.</dd>
3158:
3159: <dt>Anything else</dt>
1.541 mike 3160: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3161: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3162: (double-quoted) state</a>.</dd>
1.1 mike 3163:
1.542 mike 3164: </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 3165:
3166: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3167:
3168: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3169: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3170: state</a>.</dd>
3171:
3172: <dt>U+0026 AMPERSAND (&)</dt>
3173: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3174: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3175: being U+0027 APOSTROPHE (').</dd>
3176:
3177: <dt>EOF</dt>
3178: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3179: <a href="#data-state">data state</a>.</dd>
3180:
3181: <dt>Anything else</dt>
1.541 mike 3182: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3183: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3184: (single-quoted) state</a>.</dd>
1.1 mike 3185:
1.542 mike 3186: </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 3187:
3188: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3189:
3190: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3191: <dt>U+000A LINE FEED (LF)</dt>
3192: <dt>U+000C FORM FEED (FF)</dt>
3193: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3194: <dt>U+0020 SPACE</dt>
3195: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3196:
3197: <dt>U+0026 AMPERSAND (&)</dt>
3198: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3199: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3200: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3201:
3202: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3203: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3204: state</a>.</dd>
3205:
3206: <dt>U+0022 QUOTATION MARK (")</dt>
3207: <dt>U+0027 APOSTROPHE (')</dt>
3208: <dt>U+003C LESS-THAN SIGN (<)</dt>
3209: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3210: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3211: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3212: entry below.</dd>
3213:
3214: <dt>EOF</dt>
3215: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3216: <a href="#data-state">data state</a>.</dd>
3217:
3218: <dt>Anything else</dt>
1.541 mike 3219: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3220: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3221: state</a>.</dd>
3222:
1.542 mike 3223: </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 3224:
3225: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3226:
3227: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3228: the current attribute's value.</p>
3229:
3230: <p>Otherwise, append the returned character token to the current
3231: attribute's value.</p>
3232:
3233: <p>Finally, switch back to the attribute value state that you were
3234: in when were switched into this state.</p>
3235:
3236:
1.542 mike 3237: <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 3238:
3239: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3240:
3241: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3242: <dt>U+000A LINE FEED (LF)</dt>
3243: <dt>U+000C FORM FEED (FF)</dt>
3244: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3245: <dt>U+0020 SPACE</dt>
3246: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3247:
3248: <dt>U+002F SOLIDUS (/)</dt>
3249: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3250:
3251: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3252: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3253: state</a>.</dd>
3254:
3255: <dt>EOF</dt>
3256: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3257: <a href="#data-state">data state</a>.</dd>
3258:
3259: <dt>Anything else</dt>
3260: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3261: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3262:
1.542 mike 3263: </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 3264:
3265: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3266:
3267: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3268: <dd>Set the <i>self-closing flag</i> of the current tag
3269: token. Emit the current tag token. Switch to the <a href="#data-state">data
3270: state</a>.</dd>
3271:
3272: <dt>EOF</dt>
3273: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3274: <a href="#data-state">data state</a>.</dd>
3275:
3276: <dt>Anything else</dt>
3277: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3278: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3279:
1.542 mike 3280: </dl><h5 id="bogus-comment-state"><span class="secno">9.2.4.43 </span><dfn>Bogus comment state</dfn></h5>
1.1 mike 3281:
3282: <p>Consume every character up to and including the first U+003E
3283: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3284: whichever comes first. Emit a comment token whose data is the
3285: concatenation of all the characters starting from and including
3286: the character that caused the state machine to switch into the
3287: bogus comment state, up to and including the character immediately
3288: before the last consumed character (i.e. up to the character just
3289: before the U+003E or EOF character). (If the comment was started
3290: by the end of the file (EOF), the token is empty.)</p>
3291:
3292: <p>Switch to the <a href="#data-state">data state</a>.</p>
3293:
3294: <p>If the end of the file was reached, reconsume the EOF
3295: character.</p>
3296:
3297:
1.542 mike 3298: <h5 id="markup-declaration-open-state"><span class="secno">9.2.4.44 </span><dfn>Markup declaration open state</dfn></h5>
1.1 mike 3299:
3300: <p>If the next two characters are both U+002D HYPHEN-MINUS (-)
3301: characters, consume those two characters, create a comment token
3302: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3303: start state</a>.</p>
3304:
3305: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3306: case-insensitive</a> match for the word "DOCTYPE", then consume
3307: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3308:
3309: <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
3310: content</a>" and the <a href="#current-node">current node</a> is not an element
3311: in the <a href="#html-namespace-0">HTML namespace</a> and the next seven characters are
3312: an <span>ASCII case-sensitive</span> match for the string "[CDATA["
3313: (the five uppercase letters "CDATA" with a U+005B LEFT SQUARE
3314: BRACKET character before and after), then consume those characters
1.91 mike 3315: and switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3316:
3317: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3318: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3319: consumed, if any, is the first character that will be in the
3320: comment.</p>
3321:
3322:
1.542 mike 3323: <h5 id="comment-start-state"><span class="secno">9.2.4.45 </span><dfn>Comment start state</dfn></h5>
1.1 mike 3324:
3325: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3326:
3327: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3328: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3329:
3330: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3331: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3332: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3333: -->
3334:
3335: <dt>EOF</dt>
3336: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3337: the EOF character in the <a href="#data-state">data state</a>.</dd>
3338:
3339: <dt>Anything else</dt>
1.541 mike 3340: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3341: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3342:
1.542 mike 3343: </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 3344:
3345: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3346:
3347: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3348: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3349:
3350: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3351: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3352: the <a href="#data-state">data state</a>.</dd>
3353:
3354: <dt>EOF</dt>
3355: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3356: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3357: in comment end state -->
3358:
3359: <dt>Anything else</dt>
1.541 mike 3360: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3361: <a href="#current-input-character">current input character</a> to the comment token's
3362: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3363:
1.542 mike 3364: </dl><h5 id="comment-state"><span class="secno">9.2.4.47 </span><dfn id="comment">Comment state</dfn></h5>
1.1 mike 3365:
3366: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3367:
3368: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3369: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3370:
3371: <dt>EOF</dt>
3372: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3373: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3374: in comment end state -->
3375:
3376: <dt>Anything else</dt>
1.541 mike 3377: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3378: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3379:
1.542 mike 3380: </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 3381:
3382: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3383:
3384: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3385: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3386:
3387: <dt>EOF</dt>
3388: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3389: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3390: in comment end state -->
3391:
3392: <dt>Anything else</dt>
1.541 mike 3393: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3394: <a href="#current-input-character">current input character</a> to the comment token's
3395: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3396:
1.542 mike 3397: </dl><h5 id="comment-end-state"><span class="secno">9.2.4.49 </span><dfn>Comment end state</dfn></h5>
1.1 mike 3398:
3399: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3400:
3401: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3402: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3403: state</a>.</dd>
3404:
3405: <dt>U+0009 CHARACTER TABULATION</dt>
3406: <dt>U+000A LINE FEED (LF)</dt>
3407: <dt>U+000C FORM FEED (FF)</dt>
3408: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3409: <dt>U+0020 SPACE</dt>
3410: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS (-)
1.541 mike 3411: characters and the <a href="#current-input-character">current input character</a> to the
3412: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3413: state</a>.</dd>
1.1 mike 3414:
3415: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3416: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3417: state</a>.</dd>
3418:
1.333 mike 3419: <dt>U+002D HYPHEN-MINUS (-)</dt>
3420: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3421: character (-) to the comment token's data. Stay in the
1.333 mike 3422: <a href="#comment-end-state">comment end state</a>.</dd>
3423:
1.1 mike 3424: <dt>EOF</dt>
3425: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3426: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
3427: security reasons: otherwise, hostile user could put a <script> in
3428: a comment e.g. in a blog comment and then DOS the server so that
3429: the end tag isn't read, and then the commented <script> tag would
3430: be treated as live code -->
3431:
3432: <dt>Anything else</dt>
3433: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS (-)
1.541 mike 3434: characters and the <a href="#current-input-character">current input character</a> to the
3435: comment token's data. Switch to the <a href="#comment-state">comment
3436: state</a>.</dd>
1.1 mike 3437:
1.542 mike 3438: </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 3439:
3440: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3441:
1.333 mike 3442: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.1 mike 3443: <dd>Append two U+002D HYPHEN-MINUS (-) characters and a U+0021
1.464 mike 3444: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3445: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3446:
1.333 mike 3447: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3448: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3449: state</a>.</dd>
3450:
1.1 mike 3451: <dt>EOF</dt>
3452: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3453: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3454: comment in comment end state -->
3455:
3456: <dt>Anything else</dt>
3457: <dd>Append two U+002D HYPHEN-MINUS (-) characters, a U+0021
1.541 mike 3458: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3459: character</a> to the comment token's data. Switch to the
3460: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3461:
1.542 mike 3462: </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 3463:
3464: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3465:
1.333 mike 3466: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3467: <dt>U+000A LINE FEED (LF)</dt>
3468: <dt>U+000C FORM FEED (FF)</dt>
3469: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3470: <dt>U+0020 SPACE</dt>
1.541 mike 3471: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3472: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3473:
1.333 mike 3474: <dt>U+002D HYPHEN-MINUS (-)</dt>
3475: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3476:
3477: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3478: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3479: state</a>.</dd>
3480:
1.1 mike 3481: <dt>EOF</dt>
3482: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3483: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3484: comment in comment end state -->
3485:
3486: <dt>Anything else</dt>
1.541 mike 3487: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3488: to the <a href="#comment-state">comment state</a>.</dd>
3489:
1.542 mike 3490: </dl><h5 id="doctype-state"><span class="secno">9.2.4.52 </span><dfn>DOCTYPE state</dfn></h5>
1.1 mike 3491:
3492: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3493:
3494: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3495: <dt>U+000A LINE FEED (LF)</dt>
3496: <dt>U+000C FORM FEED (FF)</dt>
3497: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3498: <dt>U+0020 SPACE</dt>
3499: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3500:
3501: <dt>EOF</dt>
3502: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3503: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3504: the EOF character in the <a href="#data-state">data state</a>.</dd>
3505:
3506: <dt>Anything else</dt>
3507: <dd><a href="#parse-error">Parse error</a>. Reconsume the current
3508: character in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3509:
1.542 mike 3510: </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 3511:
3512: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3513:
3514: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3515: <dt>U+000A LINE FEED (LF)</dt>
3516: <dt>U+000C FORM FEED (FF)</dt>
3517: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3518: <dt>U+0020 SPACE</dt>
3519: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3520:
3521: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3522: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3523: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3524: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3525: state</a>.</dd>
3526:
1.333 mike 3527: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3528: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3529: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3530: the <a href="#data-state">data state</a>.</dd>
3531:
1.1 mike 3532: <dt>EOF</dt>
3533: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3534: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3535: the EOF character in the <a href="#data-state">data state</a>.</dd>
3536:
3537: <dt>Anything else</dt>
3538: <dd>Create a new DOCTYPE token. Set the token's name to the
3539: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3540: state</a>.</dd>
3541:
1.542 mike 3542: </dl><h5 id="doctype-name-state"><span class="secno">9.2.4.54 </span><dfn>DOCTYPE name state</dfn></h5>
1.1 mike 3543:
3544: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3545:
3546: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3547: <dt>U+000A LINE FEED (LF)</dt>
3548: <dt>U+000C FORM FEED (FF)</dt>
3549: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3550: <dt>U+0020 SPACE</dt>
3551: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3552:
3553: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3554: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3555: state</a>.</dd>
3556:
3557: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3558: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3559: character</a> (add 0x0020 to the character's code point) to the
3560: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3561: state</a>.</dd>
1.1 mike 3562:
3563: <dt>EOF</dt>
3564: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3565: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3566: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3567:
3568: <dt>Anything else</dt>
1.541 mike 3569: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3570: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3571: state</a>.</dd>
1.1 mike 3572:
1.542 mike 3573: </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 3574:
3575: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3576:
3577: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3578: <dt>U+000A LINE FEED (LF)</dt>
3579: <dt>U+000C FORM FEED (FF)</dt>
3580: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3581: <dt>U+0020 SPACE</dt>
3582: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3583:
3584: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3585: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3586: state</a>.</dd>
3587:
3588: <dt>EOF</dt>
3589: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3590: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3591: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3592:
3593: <dt>Anything else</dt>
3594: <dd>
3595:
3596: <p>If the six characters starting from the <a href="#current-input-character">current input
3597: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3598: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3599: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3600:
3601: <p>Otherwise, if the six characters starting from the
3602: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3603: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3604: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3605: keyword state</a>.</p>
1.1 mike 3606:
3607: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3608: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3609: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3610:
3611: </dd>
3612:
1.542 mike 3613: </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 3614:
3615: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3616:
3617: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3618: <dt>U+000A LINE FEED (LF)</dt>
3619: <dt>U+000C FORM FEED (FF)</dt>
3620: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3621: <dt>U+0020 SPACE</dt>
3622: <dd>Switch to the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3623: state</a>.</dd>
3624:
3625: <dt>EOF</dt>
3626: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3627: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3628: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3629:
3630: <dt>Anything else</dt>
3631: <dd><a href="#parse-error">Parse error</a>. Reconsume the current character in
3632: the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3633:
1.542 mike 3634: </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 3635:
3636: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3637:
3638: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3639: <dt>U+000A LINE FEED (LF)</dt>
3640: <dt>U+000C FORM FEED (FF)</dt>
3641: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3642: <dt>U+0020 SPACE</dt>
3643: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3644:
3645: <dt>U+0022 QUOTATION MARK (")</dt>
3646: <dd>Set the DOCTYPE token's public identifier to the empty string
3647: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3648: (double-quoted) state</a>.</dd>
3649:
3650: <dt>U+0027 APOSTROPHE (')</dt>
3651: <dd>Set the DOCTYPE token's public identifier to the empty string
3652: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3653: (single-quoted) state</a>.</dd>
3654:
3655: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3656: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3657: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3658: token. Switch to the <a href="#data-state">data state</a>.</dd>
3659:
3660: <dt>EOF</dt>
3661: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3662: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3663: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3664:
3665: <dt>Anything else</dt>
3666: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3667: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3668: DOCTYPE state</a>.</dd>
3669:
1.542 mike 3670: </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 3671:
3672: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3673:
3674: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3675: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3676:
3677: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3678: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3679: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3680: token. Switch to the <a href="#data-state">data state</a>.</dd>
3681:
3682: <dt>EOF</dt>
3683: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3684: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3685: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3686:
3687: <dt>Anything else</dt>
3688: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3689: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3690: identifier (double-quoted) state</a>.</dd>
3691:
1.542 mike 3692: </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 3693:
3694: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3695:
3696: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3697: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3698:
3699: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3700: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3701: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3702: token. Switch to the <a href="#data-state">data state</a>.</dd>
3703:
3704: <dt>EOF</dt>
3705: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3706: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3707: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3708:
3709: <dt>Anything else</dt>
3710: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3711: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3712: identifier (single-quoted) state</a>.</dd>
3713:
1.542 mike 3714: </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 3715:
3716: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3717:
3718: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3719: <dt>U+000A LINE FEED (LF)</dt>
3720: <dt>U+000C FORM FEED (FF)</dt>
3721: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3722: <dt>U+0020 SPACE</dt>
1.541 mike 3723: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3724: identifiers state</a>.</dd>
1.444 mike 3725:
3726: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3727: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3728: state</a>.</dd>
3729:
3730: <dt>U+0022 QUOTATION MARK (")</dt>
3731: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3732: identifier to the empty string (not missing), then switch to the
3733: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3734:
3735: <dt>U+0027 APOSTROPHE (')</dt>
3736: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3737: identifier to the empty string (not missing), then switch to the
3738: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3739:
3740: <dt>EOF</dt>
3741: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3742: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3743: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3744:
3745: <dt>Anything else</dt>
3746: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3747: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3748: DOCTYPE state</a>.</dd>
3749:
1.542 mike 3750: </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 3751:
3752: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3753:
3754: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3755: <dt>U+000A LINE FEED (LF)</dt>
3756: <dt>U+000C FORM FEED (FF)</dt>
3757: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3758: <dt>U+0020 SPACE</dt>
1.541 mike 3759: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3760: state</a>.</dd>
1.444 mike 3761:
3762: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3763: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3764: state</a>.</dd>
1.1 mike 3765:
3766: <dt>U+0022 QUOTATION MARK (")</dt>
3767: <dd>Set the DOCTYPE token's system identifier to the empty string
3768: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3769: (double-quoted) state</a>.</dd>
3770:
3771: <dt>U+0027 APOSTROPHE (')</dt>
3772: <dd>Set the DOCTYPE token's system identifier to the empty string
3773: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3774: (single-quoted) state</a>.</dd>
3775:
3776: <dt>EOF</dt>
3777: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3778: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3779: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3780:
3781: <dt>Anything else</dt>
3782: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3783: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3784: DOCTYPE state</a>.</dd>
3785:
1.542 mike 3786: </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 3787:
3788: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3789:
3790: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3791: <dt>U+000A LINE FEED (LF)</dt>
3792: <dt>U+000C FORM FEED (FF)</dt>
3793: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3794: <dt>U+0020 SPACE</dt>
3795: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3796: state</a>.</dd>
3797:
3798: <dt>EOF</dt>
3799: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3800: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3801: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3802:
3803: <dt>Anything else</dt>
3804: <dd><a href="#parse-error">Parse error</a>. Reconsume the current character in
3805: the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3806:
1.542 mike 3807: </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 3808:
3809: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3810:
3811: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3812: <dt>U+000A LINE FEED (LF)</dt>
3813: <dt>U+000C FORM FEED (FF)</dt>
3814: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3815: <dt>U+0020 SPACE</dt>
3816: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3817:
3818: <dt>U+0022 QUOTATION MARK (")</dt>
3819: <dd>Set the DOCTYPE token's system identifier to the empty string
3820: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3821: (double-quoted) state</a>.</dd>
3822:
3823: <dt>U+0027 APOSTROPHE (')</dt>
3824: <dd>Set the DOCTYPE token's system identifier to the empty string
3825: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3826: (single-quoted) state</a>.</dd>
3827:
3828: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3829: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3830: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3831: token. Switch to the <a href="#data-state">data state</a>.</dd>
3832:
3833: <dt>EOF</dt>
3834: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3835: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3836: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3837:
3838: <dt>Anything else</dt>
3839: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3840: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3841: DOCTYPE state</a>.</dd>
3842:
1.542 mike 3843: </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 3844:
3845: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3846:
3847: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 3848: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3849: state</a>.</dd>
1.1 mike 3850:
3851: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3852: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3853: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3854: token. Switch to the <a href="#data-state">data state</a>.</dd>
3855:
3856: <dt>EOF</dt>
3857: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3858: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3859: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3860:
3861: <dt>Anything else</dt>
1.541 mike 3862: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3863: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 3864: identifier (double-quoted) state</a>.</dd>
3865:
1.542 mike 3866: </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 3867:
3868: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3869:
3870: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 3871: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3872: state</a>.</dd>
1.1 mike 3873:
3874: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3875: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3876: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3877: token. Switch to the <a href="#data-state">data state</a>.</dd>
3878:
3879: <dt>EOF</dt>
3880: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3881: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3882: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3883:
3884: <dt>Anything else</dt>
1.541 mike 3885: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3886: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 3887: identifier (single-quoted) state</a>.</dd>
3888:
1.542 mike 3889: </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 3890:
3891: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3892:
3893: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3894: <dt>U+000A LINE FEED (LF)</dt>
3895: <dt>U+000C FORM FEED (FF)</dt>
3896: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3897: <dt>U+0020 SPACE</dt>
1.541 mike 3898: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
3899: state</a>.</dd>
1.1 mike 3900:
3901: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3902: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3903: state</a>.</dd>
3904:
3905: <dt>EOF</dt>
3906: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3907: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3908: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3909:
3910: <dt>Anything else</dt>
3911: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
3912: state</a>. (This does <em>not</em> set the DOCTYPE token's
3913: <i>force-quirks flag</i> to <i>on</i>.)</dd>
3914:
1.542 mike 3915: </dl><h5 id="bogus-doctype-state"><span class="secno">9.2.4.67 </span><dfn>Bogus DOCTYPE state</dfn></h5>
1.1 mike 3916:
3917: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3918:
3919: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3920: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
3921: state</a>.</dd>
3922:
3923: <dt>EOF</dt>
3924: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
3925: <a href="#data-state">data state</a>.</dd>
3926:
3927: <dt>Anything else</dt>
3928: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
3929:
1.542 mike 3930: </dl><h5 id="cdata-section-state"><span class="secno">9.2.4.68 </span><dfn>CDATA section state</dfn></h5>
1.1 mike 3931:
3932: <p>Consume every character up to the next occurrence of the three
3933: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
3934: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
3935: end of the file (EOF), whichever comes first. Emit a series of
3936: character tokens consisting of all the characters consumed except
3937: the matching three character sequence at the end (if one was found
3938: before the end of the file).</p>
3939:
3940: <p>Switch to the <a href="#data-state">data state</a>.</p>
3941:
3942: <p>If the end of the file was reached, reconsume the EOF
3943: character.</p>
3944:
3945:
3946:
1.542 mike 3947: <h5 id="tokenizing-character-references"><span class="secno">9.2.4.69 </span>Tokenizing character references</h5>
1.1 mike 3948:
3949: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
3950: reference</dfn>. This definition is used when parsing character
1.299 mike 3951: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 3952: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
3953: state">in attributes</a>.</p>
3954:
3955: <p>The behavior depends on the identity of the next character (the
3956: one immediately after the U+0026 AMPERSAND character):</p>
3957:
3958: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3959: <dt>U+000A LINE FEED (LF)</dt>
3960: <dt>U+000C FORM FEED (FF)</dt>
3961: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3962: <dt>U+0020 SPACE</dt>
3963: <dt>U+003C LESS-THAN SIGN</dt>
3964: <dt>U+0026 AMPERSAND</dt>
3965: <dt>EOF</dt>
3966: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
3967:
3968: <dd>Not a character reference. No characters are consumed, and
3969: nothing is returned. (This is not an error, either.)</dd>
3970:
3971:
3972: <dt>U+0023 NUMBER SIGN (#)</dt>
3973:
3974: <dd>
3975:
3976: <p>Consume the U+0023 NUMBER SIGN.</p>
3977:
3978: <p>The behavior further depends on the character after the U+0023
3979: NUMBER SIGN:</p>
3980:
3981: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
3982: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
3983:
3984: <dd>
3985:
3986: <p>Consume the X.</p>
3987:
3988: <p>Follow the steps below, but using the range of characters
1.464 mike 3989: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
3990: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
3991: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
3992: words, 0-9, A-F, a-f).</p>
1.1 mike 3993:
3994: <p>When it comes to interpreting the number, interpret it as a
3995: hexadecimal number.</p>
3996:
3997: </dd>
3998:
3999:
4000: <dt>Anything else</dt>
4001:
4002: <dd>
4003:
4004: <p>Follow the steps below, but using the range of characters
1.464 mike 4005: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4006:
4007: <p>When it comes to interpreting the number, interpret it as a
4008: decimal number.</p>
4009:
4010: </dd>
4011:
4012: </dl><p>Consume as many characters as match the range of characters
4013: given above.</p>
4014:
4015: <p>If no characters match the range, then don't consume any
4016: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4017: appropriate, the X character). This is a <a href="#parse-error">parse
4018: error</a>; nothing is returned.</p>
4019:
4020: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4021: that too. If it isn't, there is a <a href="#parse-error">parse
4022: error</a>.</p>
4023:
4024: <p>If one or more characters match the range, then take them all
4025: and interpret the string of characters as a number (either
4026: hexadecimal or decimal as appropriate).</p>
4027:
4028: <p>If that number is one of the numbers in the first column of the
4029: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4030: row with that number in the first column, and return a character
4031: token for the Unicode character given in the second column of that
4032: row.</p>
4033:
4034: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4035: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
4036: </td></tr><tr><td>0x0D </td><td>U+000A </td><td>LINE FEED (LF)
1.464 mike 4037: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4038: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4039: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4040: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4041: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4042: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4043: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4044: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4045: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4046: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4047: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4048: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4049: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4050: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4051: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4052: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4053: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4054: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4055: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4056: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4057: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4058: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4059: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4060: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4061: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4062: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4063: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4064: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4065: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4066: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4067: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4068: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4069: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4070: surrogates not allowed; see the comment in the "preprocessing the
4071: input stream" section for details --> or is greater than 0x10FFFF,
4072: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4073: REPLACEMENT CHARACTER.</p>
1.18 mike 4074:
4075: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4076: whose code point is that number.
4077:
4078: <!-- this is the same as the equivalent list in the input stream
4079: section -->
4080: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4081: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4082: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4083: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4084: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4085: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4086: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4087: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4088: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4089: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4090: error</a>.</p>
1.1 mike 4091:
4092: </dd>
4093:
4094:
4095: <dt>Anything else</dt>
4096:
4097: <dd>
4098:
4099: <p>Consume the maximum number of characters possible, with the
4100: consumed characters matching one of the identifiers in the first
4101: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4102: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4103:
4104: <p>If no match can be made, then this is a <a href="#parse-error">parse
4105: error</a>. No characters are consumed, and nothing is
4106: returned.</p>
4107:
4108: <p>If the last character matched is not a U+003B SEMICOLON (<code title="">;</code>), there is a <a href="#parse-error">parse error</a>.</p>
4109:
4110: <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
4111: attribute</a>, and the last character matched is not a U+003B
1.464 mike 4112: SEMICOLON character (<code title="">;</code>), and the next
4113: character is in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
4114: NINE (9), U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL
4115: LETTER Z, or U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL
4116: LETTER Z, then, for historical reasons, all the characters that
4117: were matched after the U+0026 AMPERSAND character (&) must be
4118: unconsumed, and nothing is returned.</p>
1.1 mike 4119:
4120: <p>Otherwise, return a character token for the character
4121: corresponding to the character reference name (as given by the
4122: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4123: table).</p>
4124:
4125: <div class="example">
4126:
4127: <p>If the markup contains <code title="">I'm &notit; I tell
4128: you</code>, the character reference is parsed as "not", as in,
4129: <code title="">I'm ¬it; I tell you</code>. But if the markup
4130: was <code title="">I'm &notin; I tell you</code>, the
4131: character reference would be parsed as "notin;", resulting in
4132: <code title="">I'm ∉ I tell you</code>.</p>
4133:
4134: </div>
4135:
4136: </dd>
4137:
1.266 mike 4138: </dl></div><div class="impl">
4139:
1.363 mike 4140: <!-- v2: One thing that this doesn't define is handling deeply
4141: nested documents. There are compatibility requirements around that:
4142: you can't throw away the elements altogether, consider Tux made only
4143: with opening <font> elements, one per character. Seems that the best
4144: thing to do is to close some formatting elements from the middle of
4145: the stack when you hit a limit, or something. -->
4146:
1.266 mike 4147: <h4 id="tree-construction"><span class="secno">9.2.5 </span><dfn>Tree construction</dfn></h4>
1.1 mike 4148:
4149: <p>The input to the tree construction stage is a sequence of tokens
4150: from the <a href="#tokenization">tokenization</a> stage. The tree construction
4151: stage is associated with a DOM <code>Document</code> object when a
4152: parser is created. The "output" of this stage consists of
4153: dynamically modifying or extending that document's DOM tree.</p>
4154:
4155: <p>This specification does not define when an interactive user agent
4156: has to render the <code>Document</code> so that it is available to
4157: the user, or when it has to begin accepting user input.</p>
4158:
4159: <p>As each token is emitted from the tokenizer, the user agent must
4160: process the token according to the rules given in the section
4161: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4162:
4163: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4164: character</dfn> into a node, if that node has a child immediately
4165: before where the character is to be inserted, and that child is a
4166: <code>Text</code> node, and that <code>Text</code> node was the last
4167: node that the parser inserted into the document, then the character
4168: must be appended to that <code>Text</code> node; otherwise, a new
4169: <code>Text</code> node whose data is just that character must be
4170: inserted in the appropriate place.</p>
4171:
4172: <div class="example">
4173:
4174: <p>Here are some sample inputs to the parser and the corresponding
4175: number of text nodes that they result in, assuming a user agent
4176: that executes scripts.</p>
4177:
4178: <table><thead><tr><th>Input </th><th>Number of text nodes
4179: </th></tr></thead><tbody><tr><td><pre>A<script>
4180: var script = document.getElementsByTagName('script')[0];
4181: document.body.removeChild(script);
4182: </script>B</pre>
4183: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4184: </td></tr><tr><td><pre>A<script>
4185: var text = document.createTextNode('B');
4186: document.body.appendChild(text);
4187: </script>C</pre>
4188: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4189: </td></tr><tr><td><pre>A<script>
4190: var text = document.getElementsByTagName('script')[0].firstChild;
4191: text.data = 'B';
4192: document.body.appendChild(text);
4193: </script>B</pre>
4194: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4195: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4196: </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>.)
4197: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4198: </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>.)
4199: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4200: </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.)
4201: </td></tr></tbody></table></div>
4202:
4203: <p id="mutation-during-parsing">DOM mutation events must not fire
4204: for changes caused by the UA parsing the document. (Conceptually,
4205: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4206: 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 4207:
4208: <p class="note">Not all of the tag names mentioned below are
4209: conformant tag names in this specification; many are included to
4210: handle legacy content. They still form part of the algorithm that
4211: implementations are required to implement to claim conformance.</p>
4212:
4213: <p class="note">The algorithm described below places no limit on the
4214: depth of the DOM tree generated, or on the length of tag names,
4215: attribute names, attribute values, text nodes, etc. While
4216: implementors are encouraged to avoid arbitrary limits, it is
4217: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4218: concerns</a> will likely force user agents to impose nesting depth
4219: constraints.</p>
1.1 mike 4220:
4221:
4222: <h5 id="creating-and-inserting-elements"><span class="secno">9.2.5.1 </span>Creating and inserting elements</h5>
4223:
4224: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4225: element for the token">create an element for a token</dfn> in a
4226: particular namespace, the UA must create a node implementing the
4227: interface appropriate for the element type corresponding to the tag
4228: name of the token in the given namespace (as given in the
4229: specification that defines that element, e.g. for an <code><a href="text-level-semantics.html#the-a-element">a</a></code>
4230: element in the <a href="#html-namespace-0">HTML namespace</a>, this specification
4231: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4232: the tag name being the name of that element, with the node being in
4233: the given namespace, and with the attributes on the node being those
4234: given in the given token.</p>
4235:
4236: <p>The interface appropriate for an element in the <a href="#html-namespace-0">HTML
1.426 mike 4237: namespace</a> that is not defined in this specification (or
4238: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4239: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4240: interface is not defined by that namespace's specification must use
4241: the interface <code>Element</code>.</p>
4242:
4243: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable</a> element is
4244: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4245: invoked once the attributes are set. (This initializes the element's
4246: <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
4247: attributes.)</p>
4248:
4249: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4250: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4251: for the token</a> in the <a href="#html-namespace-0">HTML namespace</a>, and then
4252: append this node to the <a href="#current-node">current node</a>, and push it onto
4253: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4254: <a href="#current-node">current node</a>.</p>
4255:
4256: <p>The steps below may also require that the UA insert an HTML
4257: element in a particular place, in which case the UA must follow the
4258: same steps except that it must insert or append the new node in the
4259: location specified instead of appending it to the <a href="#current-node">current
4260: node</a>. (This happens in particular during the parsing of
4261: tables with invalid content.)</p>
4262:
4263: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4264: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4265: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4266: 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
4267: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4268: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4269: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4270: inserting it wherever it is to be inserted.</p>
4271:
4272: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4273: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4274: for the token</a> in the given namespace, and then append this
4275: node to the <a href="#current-node">current node</a>, and push it onto the
4276: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4277: <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>
4278: whose value is not exactly the same as the element's namespace, that
4279: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4280: element has an <code title="">xmlns:xlink</code> attribute in the
4281: <a href="#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="#xlink-namespace">XLink
4282: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4283:
4284: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4285: attributes</dfn> for a token, then, if the token has an attribute
4286: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4287:
4288: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4289: attributes</dfn> for a token, then, for each attribute on the token
4290: whose attribute name is one of the ones in the first column of the
4291: following table, change the attribute's name to the name given in
4292: the corresponding cell in the second column. (This fixes the case of
4293: SVG attributes that are not all lowercase.)</p>
4294:
4295: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4296: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4297: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4298: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4299: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4300: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4301: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4302: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4303: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4304: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4305: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4306: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4307: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4308: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4309: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4310: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4311: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4312: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4313: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4314: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4315: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4316: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4317: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4318: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4319: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4320: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4321: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4322: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4323: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4324: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4325: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4326: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4327: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4328: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4329: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4330: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4331: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4332: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4333: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4334: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4335: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4336: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4337: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4338: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4339: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4340: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4341: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4342: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4343: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4344: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4345: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4346: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4347: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4348: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4349: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4350: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4351: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4352: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4353: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4354: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4355: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4356: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4357: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4358: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4359: foreign attributes</dfn> for a token, then, if any of the attributes
4360: on the token match the strings given in the first column of the
4361: following table, let the attribute be a namespaced attribute, with
4362: the prefix being the string given in the corresponding cell in the
4363: second column, the local name being the string given in the
4364: corresponding cell in the third column, and the namespace being the
4365: namespace given in the corresponding cell in the fourth
4366: column. (This fixes the use of namespaced attributes, in particular
4367: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4368: the <span>XML namespace</span></a>.)</p>
4369:
4370: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
4371: </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>
4372: </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>
4373: </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>
4374: </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>
4375: </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>
4376: </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>
4377: </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>
4378: </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 -->
4379: </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>
4380: </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>
4381: </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>
4382: </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 4383: </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 4384: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4385: following steps. These algorithms are always invoked in response to
4386: a start tag token.</p>
4387:
4388: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4389:
1.91 mike 4390: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4391: text element parsing algorithm</a>, switch the tokenizer to the
4392: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4393: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4394: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4395:
4396: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4397: <a href="#insertion-mode">insertion mode</a>.</p>
4398:
1.540 mike 4399: </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 4400:
4401: </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>
4402:
4403: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4404: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4405: <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 4406: <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
4407: <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
4408: <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
4409: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4410: elements</a>.</p>
4411:
4412: <p>If a step requires the UA to generate implied end tags but lists
4413: an element to exclude from the process, then the UA must perform the
4414: above steps as if that element was not in the above list.</p>
4415:
4416:
4417: <h5 id="foster-parenting"><span class="secno">9.2.5.3 </span>Foster parenting</h5>
4418:
4419: <p>Foster parenting happens when content is misnested in tables.</p>
4420:
4421: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4422: parent">foster parented</dfn>, the node <var title="">node</var>
4423: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4424:
4425: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4426: 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
4427: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4428: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4429: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4430: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4431: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4432: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4433: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4434: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4435: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4436: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4437: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4438: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4439:
4440: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4441: 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
4442: elements</a>, then <var title="">node</var> must be inserted
4443: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4444: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4445: element</a></i>; otherwise, <var title="">node</var> must be
4446: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4447:
4448:
4449:
4450: <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>
4451:
4452: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4453: mode: initial">initial</a>", tokens must be handled as follows:</p>
4454:
4455: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4456: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4457: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4458: <dd>
4459: <p>Ignore the token.</p>
4460: </dd>
4461:
4462: <dt>A comment token</dt>
4463: <dd>
4464: <p>Append a <code>Comment</code> node to the <code>Document</code>
4465: object with the <code title="">data</code> attribute set to the
4466: data given in the comment token.</p>
4467: </dd>
4468:
4469: <dt>A DOCTYPE token</dt>
4470: <dd>
4471:
4472: <p>If the DOCTYPE token's name is not a
4473: <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
4474: missing, or the token's system identifier is neither missing nor a
4475: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4476: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4477: conditions in the following list are matched, then there is a
4478: <a href="#parse-error">parse error</a>. If one of the sets of conditions in the
4479: following list is matched, then there is an <dfn id="obsolete-permitted-doctype">obsolete
4480: permitted DOCTYPE</dfn>.</p>
4481:
4482: <ul><!-- only things that trigger no-quirks mode and were valid in
4483: 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 4484: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4485: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and the
4486: token's system identifier is either missing or the
4487: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4488:
4489: <li>The DOCTYPE token's name is an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.98 mike 4490: case-insensitive</a> match for the string "<code title="">html</code>", the token's public identifier is the
1.1 mike 4491: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and the
4492: token's system identifier is either missing or the
4493: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4494:
4495: <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 XHTML 1.0 Strict//EN</code>",
4498: and the token's system identifier is the
4499: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-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 XHTML 1.1//EN</code>", and the
4504: token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4505: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4506:
4507: </ul><p>Conformance checkers may, based on the values (including
4508: presence or lack thereof) of the DOCTYPE token's name, public
4509: identifier, or system identifier, switch to a conformance checking
4510: mode for another language (e.g. based on the DOCTYPE token a
4511: conformance checker could recognize that the document is an
1.183 mike 4512: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4513: checker.)</p>
4514:
4515: <p>Append a <code>DocumentType</code> node to the
4516: <code>Document</code> node, with the <code title="">name</code>
4517: attribute set to the name given in the DOCTYPE token, or the empty
4518: string if the name was missing; the <code title="">publicId</code>
4519: attribute set to the public identifier given in the DOCTYPE token,
4520: or the empty string if the public identifier was missing; the
4521: <code title="">systemId</code> attribute set to the system
4522: identifier given in the DOCTYPE token, or the empty string if the
4523: system identifier was missing; and the other attributes specific
4524: to <code>DocumentType</code> objects set to null and empty lists
4525: as appropriate. Associate the <code>DocumentType</code> node with
4526: the <code>Document</code> object so that it is returned as the
4527: value of the <code title="">doctype</code> attribute of the
4528: <code>Document</code> object.</p>
4529:
4530: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4531: one of the conditions in the following list, then set the
4532: <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
4533:
4534: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
4535: <li> The name is set to anything other than "<code title="">HTML</code>". </li>
4536: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4537: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4538: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4539: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4540: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4541: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4542: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4543: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4544: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4545: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4546: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4547: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4548: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4549: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4550: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4551: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4552: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4553: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4554: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4555: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4556: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4557: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4558: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4559: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4560: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4561: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4562: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4563: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4564: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4565: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4566: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4567: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4568: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4569: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4570: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4571: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4572: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4573: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4574: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4575: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4576: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4577: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4578: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4579: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4580: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4581: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4582: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4583: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4584: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4585: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4586: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4587: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4588: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4589: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4590: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4591: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4592: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4593: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4594: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4595: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4596: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4597: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4598: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4599: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4600: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4601: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4602: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4603: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4604: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4605: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4606: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4607: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4608: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4609: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4610: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4611: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
4612: in the following list, then set the <code>Document</code> to
4613: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>:</p>
4614:
4615: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4616: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4617: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4618: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4619: </ul><p>The name, system identifier, and public identifier strings must
4620: be compared to the values given in the lists above in an
4621: <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> manner. A system identifier
4622: whose value is the empty string is not considered missing for the
4623: purposes of the conditions above.</p>
4624:
4625: <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>
4626:
4627: </dd>
4628:
4629: <dt>Anything else</dt>
4630: <dd>
4631:
4632: <p><a href="#parse-error">Parse error</a>.</p>
4633:
4634: <p>Set the <code>Document</code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
4635:
4636: <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
4637: reprocess the current token.</p>
4638:
4639: </dd>
4640:
4641: </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>
4642:
4643: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4644: mode: before html">before html</a>", tokens must be handled as follows:</p>
4645:
4646: <dl class="switch"><dt>A DOCTYPE token</dt>
4647: <dd>
4648: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4649: </dd>
4650:
4651: <dt>A comment token</dt>
4652: <dd>
4653: <p>Append a <code>Comment</code> node to the <code>Document</code>
4654: object with the <code title="">data</code> attribute set to the
4655: data given in the comment token.</p>
4656: </dd>
4657:
4658: <dt>A character token that is one of U+0009 CHARACTER
4659: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4660: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4661: <dd>
4662: <p>Ignore the token.</p>
4663: </dd>
4664:
4665: <dt>A start tag whose tag name is "html"</dt>
4666: <dd>
4667:
4668: <p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the <a href="#html-namespace-0">HTML
4669: namespace</a>. Append it to the <code>Document</code>
4670: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4671: elements</a>.</p>
4672:
4673: <p id="parser-appcache">If the <code>Document</code> is being
4674: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4675: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
4676: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute,
4677: then <a href="infrastructure.html#resolve-a-url" title="resolve a url">resolve</a> the value of that
4678: attribute to an <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly
4679: 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 4680: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4681: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
4682: removed; otherwise, if there is no such attribute or resolving it
4683: fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application
4684: cache selection algorithm</a> with no manifest. The algorithm
4685: must be passed the <code>Document</code> object.</p>
1.1 mike 4686:
4687: <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>
4688:
4689: </dd>
4690:
1.334 mike 4691: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4692: <dd>
4693: <p>Act as described in the "anything else" entry below.</p>
4694: </dd>
4695:
4696: <dt>Any other end tag</dt>
4697: <dd>
4698: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4699: </dd>
4700:
1.1 mike 4701: <dt>Anything else</dt>
4702: <dd>
4703:
1.159 mike 4704: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.1 mike 4705: <code>Document</code> object. Put this element in the <a href="#stack-of-open-elements">stack
4706: of open elements</a>.</p>
4707:
4708: <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
4709: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4710: algorithm</a> with no manifest, passing it the
4711: <code>Document</code> object.</p>
4712:
4713: <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
4714: reprocess the current token.</p>
4715:
4716: </dd>
4717:
4718: </dl><p>The root element can end up being removed from the
4719: <code>Document</code> object, e.g. by scripts; nothing in particular
4720: happens in such cases, content continues being appended to the nodes
4721: as described in the next section.</p>
4722:
4723:
4724: <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>
4725:
4726: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4727: mode: before head">before head</a>", tokens must be handled as follows:</p>
4728:
4729: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4730: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4731: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4732: <dd>
4733: <p>Ignore the token.</p> <!-- :-( -->
4734: </dd>
4735:
4736: <dt>A comment token</dt>
4737: <dd>
4738: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4739: node</a> with the <code title="">data</code> attribute set to
4740: the data given in the comment token.</p>
4741: </dd>
4742:
4743: <dt>A DOCTYPE token</dt>
4744: <dd>
4745: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4746: </dd>
4747:
4748: <dt>A start tag whose tag name is "html"</dt>
4749: <dd>
4750: <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
4751: mode</a>.</p>
4752: </dd>
4753:
4754: <dt>A start tag whose tag name is "head"</dt>
4755: <dd>
4756:
4757: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4758:
4759: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4760: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4761:
4762: <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>
4763:
4764: </dd>
4765:
4766: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4767: <dd>
4768:
4769: <p>Act as if a start tag token with the tag name "head" and no
4770: attributes had been seen, then reprocess the current token.</p>
4771:
4772: </dd>
4773:
4774: <dt>Any other end tag</dt>
4775: <dd>
4776:
4777: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4778:
4779: </dd>
4780:
4781: <dt>Anything else</dt>
4782: <dd>
4783:
4784: <p>Act as if a start tag token with the tag name "head" and no
4785: attributes had been seen, then reprocess the current
4786: token.</p>
4787:
4788: </dd>
4789:
4790: </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>
4791:
4792: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4793: mode: in head">in head</a>", tokens must be handled as follows:</p>
4794:
4795: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4796: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4797: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4798: <dd>
4799: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4800: the <a href="#current-node">current node</a>.</p>
4801: </dd>
4802:
4803: <dt>A comment token</dt>
4804: <dd>
4805: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
4806: node</a> with the <code title="">data</code> attribute set to
4807: the data given in the comment token.</p>
4808: </dd>
4809:
4810: <dt>A DOCTYPE token</dt>
4811: <dd>
4812: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4813: </dd>
4814:
4815: <dt>A start tag whose tag name is "html"</dt>
4816: <dd>
4817: <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
4818: mode</a>.</p>
4819: </dd>
4820:
4821: <dt>A start tag whose tag name is one of: "base", "command",
4822: "link"</dt>
4823: <dd>
4824:
4825: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
4826: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4827: elements</a>.</p>
4828:
4829: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
4830: token's <i>self-closing flag</i></a>, if it is set.</p>
4831:
4832: </dd>
4833:
4834: <dt>A start tag whose tag name is "meta"</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: <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
4845: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4846: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4847: encoding</a> to the encoding given by the value of the
4848: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
4849:
4850: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
4851: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
4852: Content-Type</a> to its value returns a supported encoding
4853: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
4854: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
4855: encoding</a> to the encoding <var title="">encoding</var>.</p>
4856:
4857: </dd>
4858:
4859: <dt>A start tag whose tag name is "title"</dt>
4860: <dd>
4861: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
4862: </dd>
4863:
4864: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
4865: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
4866: <dd>
1.91 mike 4867: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 4868: </dd>
4869:
4870: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
4871: <dd>
4872:
4873: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4874:
4875: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
4876: noscript</a>".</p>
4877:
4878: </dd>
4879:
4880: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
4881: <dd>
4882:
4883: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
4884: <a href="#html-namespace-0">HTML namespace</a>.</p></li>
4885:
4886: <li>
4887:
4888: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
4889:
4890: <p class="note">This ensures that, if the script is external,
1.159 mike 4891: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 4892: calls in the script will execute in-line, instead of blowing the
4893: document away, as would happen in most other cases. It also
4894: prevents the script from executing until the end tag is
4895: seen.</p>
4896:
4897: </li>
4898:
4899: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
4900: fragment parsing algorithm</a>, then mark the
1.484 mike 4901: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
4902: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 4903:
4904: <li><p>Append the new element to the <a href="#current-node">current node</a>
4905: and push it onto the <a href="#stack-of-open-elements">stack of open
4906: elements</a>.</p></li>
4907:
1.541 mike 4908: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
4909: state</a>.</p></li>
1.1 mike 4910:
4911: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4912: <a href="#insertion-mode">insertion mode</a>.</p>
4913:
1.540 mike 4914: </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 4915:
4916: </ol></dd>
4917:
4918: <dt>An end tag whose tag name is "head"</dt>
4919: <dd>
4920:
4921: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 4922: <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 4923: elements</a>.</p>
4924:
4925: <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>
4926:
4927: </dd>
4928:
4929: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
4930: <dd>
4931: <p>Act as described in the "anything else" entry below.</p>
4932: </dd>
4933:
4934: <dt>A start tag whose tag name is "head"</dt>
4935: <dt>Any other end tag</dt>
4936: <dd>
4937: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4938: </dd>
4939:
4940: <dt>Anything else</dt>
4941: <dd>
4942:
4943: <!-- can't get here with an EOF and a fragment case -->
4944:
4945: <p>Act as if an end tag token with the tag name "head" had
4946: been seen, and reprocess the current token.</p>
4947:
4948: </dd>
4949:
4950: </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>
4951:
4952: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
4953: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
4954:
4955: <dl class="switch"><dt>A DOCTYPE token</dt>
4956: <dd>
4957: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4958: </dd>
4959:
4960: <dt>A start tag whose tag name is "html"</dt>
4961: <dd>
4962: <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
4963: mode</a>.</p>
4964: </dd>
4965:
4966: <dt>An end tag whose tag name is "noscript"</dt>
4967: <dd>
4968:
4969: <p>Pop the <a href="#current-node">current node</a> (which will be a
4970: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
4971: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 4972: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4973:
4974: <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>
4975:
4976: </dd>
4977:
4978: <dt>A character token that is one of U+0009 CHARACTER
4979: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
4980: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
4981: <dt>A comment token</dt>
4982: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
4983: <dd>
4984: <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
4985: mode</a>.</p>
4986: </dd>
4987:
4988: <dt>An end tag whose tag name is "br"</dt>
4989: <dd>
4990: <p>Act as described in the "anything else" entry below.</p>
4991: </dd>
4992:
4993: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
4994: <dt>Any other end tag</dt>
4995: <dd>
4996: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4997: </dd>
4998:
4999: <dt>Anything else</dt>
5000: <dd>
5001:
5002: <!-- can't get here with an EOF and a fragment case -->
5003:
5004: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5005: name "noscript" had been seen and reprocess the current
5006: token.</p>
5007:
5008: </dd>
5009:
5010: </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>
5011:
5012: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5013: mode: after head">after head</a>", tokens must be handled as follows:</p>
5014:
5015: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5016: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
5017: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
5018: <dd>
5019: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5020: the <a href="#current-node">current node</a>.</p>
5021: </dd>
5022:
5023: <dt>A comment token</dt>
5024: <dd>
5025: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5026: node</a> with the <code title="">data</code> attribute set to
5027: the data given in the comment token.</p>
5028: </dd>
5029:
5030: <dt>A DOCTYPE token</dt>
5031: <dd>
5032: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5033: </dd>
5034:
5035: <dt>A start tag whose tag name is "html"</dt>
5036: <dd>
5037: <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
5038: mode</a>.</p>
5039: </dd>
5040:
5041: <dt>A start tag whose tag name is "body"</dt>
5042: <dd>
5043:
5044: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5045:
5046: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5047:
5048: <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>
5049:
5050: </dd>
5051:
5052: <dt>A start tag whose tag name is "frameset"</dt>
5053: <dd>
5054:
5055: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5056:
5057: <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>
5058:
5059: </dd>
5060:
5061: <dt>A start tag token whose tag name is one of: "base", "link",
5062: "meta", "noframes", "script", "style", "title"</dt>
5063: <dd>
5064:
5065: <p><a href="#parse-error">Parse error</a>.</p>
5066:
5067: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5068: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5069:
5070: <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
5071: mode</a>.</p>
5072:
5073: <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
5074: of open elements</a>.</p>
5075:
5076: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5077: pointer</a> cannot be null at this point.</p>
5078:
5079: </dd>
5080:
5081: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5082: <dd>
5083: <p>Act as described in the "anything else" entry below.</p>
5084: </dd>
5085:
5086: <dt>A start tag whose tag name is "head"</dt>
5087: <dt>Any other end tag</dt>
5088: <dd>
5089: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5090: </dd>
5091:
5092: <dt>Anything else</dt>
5093: <dd>
5094: <p>Act as if a start tag token with the tag name "body" and no
5095: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5096: flag</a> back to "ok", and then reprocess the current
5097: token.</p>
5098: </dd>
5099:
5100: </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>
5101:
5102: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5103: mode: in body">in body</a>", tokens must be handled as follows:</p>
5104:
5105: <dl class="switch"><dt>A character token</dt>
5106: <dd>
5107:
5108: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5109: any.</p>
5110:
5111: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5112: character</a> into the <a href="#current-node">current node</a>.</p>
5113:
5114: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
5115: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
5116: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
5117: flag</a> to "not ok".</p>
5118:
5119: </dd>
5120:
5121: <dt>A comment token</dt>
5122: <dd>
5123: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
5124: node</a> with the <code title="">data</code> attribute set to
5125: the data given in the comment token.</p>
5126: </dd>
5127:
5128: <dt>A DOCTYPE token</dt>
5129: <dd>
5130: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5131: </dd>
5132:
5133: <dt>A start tag whose tag name is "html"</dt>
5134: <dd>
5135: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5136: check to see if the attribute is already present on the top
5137: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5138: add the attribute and its corresponding value to that element.</p>
5139: </dd>
5140:
5141: <dt>A start tag token whose tag name is one of: "base", "command",
5142: "link", "meta", "noframes", "script", "style", "title"</dt>
5143: <dd>
5144: <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
5145: mode</a>.</p>
5146: </dd>
5147:
5148: <dt>A start tag whose tag name is "body"</dt>
5149: <dd>
5150:
5151: <p><a href="#parse-error">Parse error</a>.</p>
5152:
5153: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5154: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5155: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5156: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5157:
5158: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5159: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5160: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5161: elements</a>. If it is not, add the attribute and its
5162: corresponding value to that element.</p>
5163:
5164: </dd>
5165:
5166: <dt>A start tag whose tag name is "frameset"</dt>
5167: <dd>
5168:
5169: <p><a href="#parse-error">Parse error</a>.</p>
5170:
5171: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5172: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5173: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5174: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5175:
5176: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5177: the token.</p>
5178:
5179: <p>Otherwise, run the following steps:</p>
5180:
5181: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5182: elements</a> from its parent node, if it has one.</p></li>
5183:
5184: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5185: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5186: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5187:
5188: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5189: token.</p></li>
5190:
5191: <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>
5192:
5193: </li></ol></dd>
5194:
5195: <dt>An end-of-file token</dt>
5196: <dd>
5197:
5198: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5199: 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>
5200: 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 5201: <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
5202: <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
5203: <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 5204: <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 5205: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5206: fragment cases) -->
1.1 mike 5207:
5208: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5209:
5210: </dd>
5211:
5212: <dt>An end tag whose tag name is "body"</dt>
5213: <dd>
5214:
5215: <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
5216: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5217: token.</p>
5218:
5219: <!-- if we get here, the insertion mode here is forcibly "in
5220: body". -->
5221:
5222: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5223: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5224: <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
5225: <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
5226: <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
5227: <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
5228: <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
5229: <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 5230: <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
5231: <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 5232: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5233: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5234: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5235:
5236: <!-- If we ever change the frameset-ok flag to an insertion mode,
5237: then we'd have to somehow keep track of its state when we switch
5238: to after-body. -->
5239:
5240: <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>
5241:
5242: </dd>
5243:
5244: <dt>An end tag whose tag name is "html"</dt>
5245: <dd>
5246:
5247: <p>Act as if an end tag with tag name "body" had been seen,
5248: then, if that token wasn't ignored, reprocess the current
5249: token.</p>
5250:
5251: <p class="note">The fake end tag token here can only be
5252: ignored in the <a href="#fragment-case">fragment case</a>.</p>
5253:
5254: </dd>
5255:
5256: <!-- start tags for non-phrasing flow content elements -->
5257:
5258: <!-- the normal ones -->
5259: <dt>A start tag whose tag name is one of: "address", "article",
1.86 mike 5260: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5261: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5262: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5263: <dd>
5264:
5265: <!-- As of May 2008 this doesn't match any browser exactly, but is
5266: as close to what IE does as I can get without doing the non-tree
5267: DOM nonsense, and thus should actually afford better compatibility
5268: when implemented by the other browsers. -->
5269:
5270: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5271: an element in scope">has a <code>p</code> element in
5272: scope</a>, then act as if an end tag with the tag name
5273: "p" had been seen.</p>
5274:
5275: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5276:
5277: </dd>
5278:
5279: <!-- as normal, but close h1-h6 if it's the current node -->
5280: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5281: "h5", "h6"</dt>
5282: <dd>
5283:
5284: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5285: an element in scope">has a <code>p</code> element in
5286: scope</a>, then act as if an end tag with the tag name
5287: "p" had been seen.</p>
5288:
5289: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5290: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5291: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5292: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5293: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5294:
5295: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5296:
5297: </dd>
5298:
5299: <!-- as normal, but drops leading newline -->
5300: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5301: <dd>
5302:
5303: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5304: an element in scope">has a <code>p</code> element in
5305: scope</a>, then act as if an end tag with the tag name
5306: "p" had been seen.</p>
5307:
5308: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5309:
5310: <p>If the next token is a U+000A LINE FEED (LF) character
5311: token, then ignore that token and move on to the next
5312: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5313: ignored as an authoring convenience.)</p>
5314:
5315: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5316:
5317: </dd>
5318:
5319: <!-- as normal, but interacts with the form element pointer -->
5320: <dt>A start tag whose tag name is "form"</dt>
5321: <dd>
5322:
5323: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5324: pointer</a> is not null, then this is a <a href="#parse-error">parse
5325: error</a>; ignore the token.</p>
5326:
5327: <p>Otherwise:</p>
5328:
5329: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5330: an element in scope">has a <code>p</code> element in
5331: scope</a>, then act as if an end tag with the tag name
5332: "p" had been seen.</p>
5333:
5334: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5335: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5336: point to the element created.</p>
5337:
5338: </dd>
5339:
5340: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5341: <dt>A start tag whose tag name is "li"</dt>
5342: <dd>
5343:
5344: <p>Run the following algorithm:</p>
5345:
5346: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5347:
5348: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5349: node</a> (the bottommost node of the stack).</p></li>
5350:
5351: <li><p>If <var title="">node</var> is an <code><a href="semantics.html#the-li-element">li</a></code> element,
5352: then act as if an end tag with the tag name "li" had
5353: been seen, then jump to the last step.</p></li>
5354:
5355: <li><p><i>Loop</i>: If <var title="">node</var> is not in the
5356: <a href="#formatting">formatting</a> category, and is not in the
5357: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5358: <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 5359: element, then jump to the last step.</p></li> <!-- an element
5360: <foo> is in this list if the following markup:
5361:
5362: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5363:
5364: ...results in the second <li> not being (in any way) a descendant
5365: of the first <li>, or if <foo> is a formatting element that gets
5366: reopened later. -->
5367:
5368: <li><p>Otherwise, set <var title="">node</var> to the previous
5369: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5370: the step labeled <i>loop</i>.</p></li>
5371:
5372: <li>
5373:
5374: <p>This is the last step.</p>
5375:
5376: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5377: an element in scope">has a <code>p</code> element in
5378: scope</a>, then act as if an end tag with the tag name
5379: "p" had been seen.</p>
5380:
5381: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5382: token.</p>
5383:
5384: </li>
5385:
5386: </ol></dd>
5387:
5388: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5389: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5390: <dd>
5391:
5392: <p>Run the following algorithm:</p>
5393:
5394: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5395:
5396: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5397: node</a> (the bottommost node of the stack).</p></li>
5398:
5399: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5400: <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
5401: tag with the same tag name as <var title="">node</var> had been
5402: seen, then jump to the last step.</p></li>
1.1 mike 5403:
5404: <li><p>If <var title="">node</var> is not in the
5405: <a href="#formatting">formatting</a> category, and is not in the
5406: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5407: <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 5408: element, then jump to the last step.</p></li> <!-- an element
5409: <foo> is in this list if the following markup:
5410:
5411: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5412:
5413: ...results in the second <dt> not being (in any way) a descendant
5414: of the first <dt>, or if <foo> is a formatting element that gets
5415: reopened later. -->
5416:
5417: <li><p>Otherwise, set <var title="">node</var> to the previous
5418: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5419: the step labeled <i>loop</i>.</p></li>
5420:
5421: <li>
5422:
5423: <p>This is the last step.</p>
5424:
5425: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5426: an element in scope">has a <code>p</code> element in
5427: scope</a>, then act as if an end tag with the tag name
5428: "p" had been seen.</p>
5429:
5430: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5431: token.</p>
5432:
5433: </li>
5434:
5435: </ol></dd>
5436:
5437: <!-- same as normal, but effectively ends parsing -->
5438: <dt>A start tag whose tag name is "plaintext"</dt>
5439: <dd>
5440:
5441: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5442: an element in scope">has a <code>p</code> element in
5443: scope</a>, then act as if an end tag with the tag name
5444: "p" had been seen.</p>
5445:
5446: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5447:
1.541 mike 5448: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5449:
1.541 mike 5450: <p class="note">Once a start tag with the tag name "plaintext" has
5451: been seen, that will be the last token ever seen other than
5452: character tokens (and the end-of-file token), because there is no
5453: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5454:
5455: </dd>
5456:
5457: <!-- end tags for non-phrasing flow content elements -->
5458:
5459: <!-- the normal ones -->
5460: <dt>An end tag whose tag name is one of: "address", "article",
1.86 mike 5461: "aside", "blockquote", "center", <!--v2DATAGRID-->"datagrid",
1.305 mike 5462: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5463: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5464: "section", "ul"</dt>
1.1 mike 5465: <dd>
5466:
5467: <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>
5468: with the same tag name as that of the token, then this is a
5469: <a href="#parse-error">parse error</a>; ignore the token.</p>
5470:
5471: <p>Otherwise, run these steps:</p>
5472:
5473: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5474:
5475: <li><p>If the <a href="#current-node">current node</a> is not an element with
5476: the same tag name as that of the token, then this is a
5477: <a href="#parse-error">parse error</a>.</p></li>
5478:
5479: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5480: until an element with the same tag name as the token has been
5481: popped from the stack.</p></li>
5482:
5483: </ol></dd>
5484:
5485: <!-- removes the form element pointer instead of the matching node -->
5486: <dt>An end tag whose tag name is "form"</dt>
5487: <dd>
5488:
5489: <p>Let <var title="">node</var> be the element that the
5490: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5491: to.</p>
5492:
5493: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5494: to null.</p>
5495:
5496: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5497: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5498: scope">have <var title="">node</var> in scope</a>, then this is
5499: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5500:
5501: <p>Otherwise, run these steps:</p>
5502:
5503: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5504:
5505: <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
5506: error</a>.</p></li>
5507:
5508: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5509: open elements</a>.</p></li>
5510:
5511: </ol></dd>
5512:
5513: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5514: <dt>An end tag whose tag name is "p"</dt>
5515: <dd>
5516:
5517: <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>
5518: with the same tag name as that of the token, then this is a
5519: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5520: "p" had been seen, then reprocess the current token.</p>
5521:
5522: <p>Otherwise, run these steps:</p>
5523:
5524: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5525: for elements with the same tag name as the token.</p></li>
5526:
5527: <li><p>If the <a href="#current-node">current node</a> is not an element with
5528: the same tag name as that of the token, then this is a
5529: <a href="#parse-error">parse error</a>.</p></li>
5530:
5531: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5532: until an element with the same tag name as the token has been
5533: popped from the stack.</p></li>
5534:
5535: </ol></dd>
5536:
1.234 mike 5537: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5538: <dt>An end tag whose tag name is "li"</dt>
5539: <dd>
5540:
5541: <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
5542: item scope</a> with the same tag name as that of the token,
5543: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5544:
5545: <p>Otherwise, run these steps:</p>
5546:
5547: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5548: for elements with the same tag name as the token.</p></li>
5549:
5550: <li><p>If the <a href="#current-node">current node</a> is not an element with
5551: the same tag name as that of the token, then this is a
5552: <a href="#parse-error">parse error</a>.</p></li>
5553:
5554: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5555: until an element with the same tag name as the token has been
5556: popped from the stack.</p></li>
5557:
5558: </ol></dd>
5559:
1.1 mike 5560: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5561: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5562: <dd>
5563:
5564: <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>
5565: with the same tag name as that of the token, then this is a
5566: <a href="#parse-error">parse error</a>; ignore the token.</p>
5567:
5568: <p>Otherwise, run these steps:</p>
5569:
5570: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5571: for elements with the same tag name as the token.</p></li>
5572:
5573: <li><p>If the <a href="#current-node">current node</a> is not an element with
5574: the same tag name as that of the token, then this is a
5575: <a href="#parse-error">parse error</a>.</p></li>
5576:
5577: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5578: until an element with the same tag name as the token has been
5579: popped from the stack.</p></li>
5580:
5581: </ol></dd>
5582:
5583: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5584: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5585: <dd>
5586:
5587: <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>
5588: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5589: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5590:
5591: <p>Otherwise, run these steps:</p>
5592:
5593: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5594:
5595: <li><p>If the <a href="#current-node">current node</a> is not an element with
5596: the same tag name as that of the token, then this is a
5597: <a href="#parse-error">parse error</a>.</p></li>
5598:
5599: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5600: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5601: "h5", or "h6" has been popped from the stack.</p></li>
5602:
5603: </ol></dd>
5604:
5605: <dt>An end tag whose tag name is "sarcasm"</dt>
5606: <dd>
5607: <p>Take a deep breath, then act as described in the "any other end
5608: tag" entry below.</p>
5609: </dd>
5610:
5611: <!-- ADOPTION AGENCY ELEMENTS
5612: Mozilla-only: bdo blink del ins sub sup q
5613: Safari-only: code dfn kbd nobr samp var wbr
5614: Both: a b big em font i s small strike strong tt u -->
5615:
5616: <dt>A start tag whose tag name is "a"</dt>
5617: <dd>
5618:
5619: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5620: contains an element whose tag name is "a" between the end of
5621: the list and the last marker on the list (or the start of the
5622: list if there is no marker on the list), then this is a
5623: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5624: name "a" had been seen, then remove that element from the
5625: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5626: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5627: already remove it (it might not have if the element is not
5628: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5629: scope</a>).</p>
5630:
5631: <p class="example">In the non-conforming stream
5632: <code><a href="a">a<table><a href="b">b</table>x</code>,
5633: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing
5634: the second one, and the "x" character would be inside a link
5635: to "b", not to "a". This is despite the fact that the outer
5636: <code><a href="text-level-semantics.html#the-a-element">a</a></code> element is not in table scope (meaning that a
5637: regular <code></a></code> end tag at the start of the table
5638: wouldn't close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element).</p>
5639:
5640: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5641: any.</p>
5642:
5643: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5644: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5645: elements</a>.</p>
5646:
5647: </dd>
5648:
5649: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5650: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5651: <dd>
5652:
5653: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5654: any.</p>
5655:
5656: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5657: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5658: elements</a>.</p>
5659:
5660: </dd>
5661:
5662: <dt>A start tag whose tag name is "nobr"</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>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5669: element in scope">has a <code>nobr</code> element in scope</a>,
5670: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5671: the tag name "nobr" had been seen, then once again
5672: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5673: any.</p>
5674:
5675: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5676: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5677: elements</a>.</p>
5678:
5679: </dd>
5680:
5681: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5682: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5683: "strike", "strong", "tt", "u"</dt>
5684: <dd>
5685:
5686: <p>Follow these steps:</p>
5687:
5688: <ol><li>
5689:
5690: <p>Let the <var title="">formatting element</var> be the
5691: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5692: elements</a> that:</p>
5693:
5694: <ul><li>is between the end of the list and the last scope
5695: marker in the list, if any, or the start of the list
5696: otherwise, and</li>
5697:
5698: <li>has the same tag name as the token.</li>
5699:
5700: </ul><p>If there is no such node, or, if that node is also in the
5701: <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
5702: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5703: steps.</p>
5704:
5705: <p>Otherwise, if there is such a node, but that node is not
5706: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5707: <a href="#parse-error">parse error</a>; remove the element from the list,
5708: and abort these steps.</p>
5709:
5710: <p>Otherwise, there is a <var title="">formatting
5711: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5712: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5713: element in scope">in scope</a>. If the element is not the
5714: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5715: error</a>. In any case, proceed with the algorithm as
5716: written in the following steps.</p>
5717:
5718: </li>
5719:
5720: <li><p>Let the <var title="">furthest block</var> be the
5721: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5722: is lower in the stack than the <var title="">formatting
5723: element</var>, and is not an element in the
5724: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5725: categories. There might not be one.</p></li>
5726:
5727: <li><p>If there is no <var title="">furthest block</var>,
5728: then the UA must skip the subsequent steps and instead just
5729: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5730: elements</a>, from the <a href="#current-node">current node</a> up to and
5731: including the <var title="">formatting element</var>, and
5732: remove the <var title="">formatting element</var> from the
5733: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5734:
5735: <li><p>Let the <var title="">common ancestor</var> be the element
5736: immediately above the <var title="">formatting element</var> in the
5737: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5738:
5739: <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
5740: formatting elements</a> relative to the elements on either
5741: side of it in the list.</p></li>
5742:
5743: <li>
5744:
5745: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5746: <var title="">furthest block</var>. Follow these steps:</p>
5747:
5748: <ol><li>Let <var title="">node</var> be the element immediately
5749: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5750: elements</a>, or if <var title="">node</var> is no longer in
5751: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5752: removed by the next step), the element that was immediately
5753: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5754: elements</a> before <var title="">node</var> was
5755: removed.</li>
1.1 mike 5756:
5757: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5758: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5759: elements</a> and then go back to step 1.</li>
5760:
5761: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5762: in the overall algorithm.</li>
5763:
5764: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5765: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5766: elements</a>.</li>
5767:
5768: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5769: element <var title="">node</var> was created, replace the entry
5770: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5771: formatting elements</a> with an entry for the new element,
5772: replace the entry for <var title="">node</var> in the
5773: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5774: element, and let <var title="">node</var> be the new
5775: element.</li>
5776:
5777: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5778: parent node if any.</li>
5779:
5780: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5781:
5782: <li>Return to step 1 of this inner set of steps.</li>
5783:
5784: </ol></li>
5785:
5786: <li>
5787:
5788: <p>If the <var title="">common ancestor</var> node is a
5789: <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>,
5790: <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,
5791: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5792: node</var> ended up being in the previous step, first removing
5793: it from its previous parent node if any.</p>
5794:
5795: <p>Otherwise, append whatever <var title="">last node</var>
5796: ended up being in the previous step to the <var title="">common
5797: ancestor</var> node, first removing it from its previous parent
5798: node if any.</p>
5799:
5800: </li>
5801:
5802: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5803: <var title="">formatting element</var> was created.</p></li>
5804:
5805: <li><p>Take all of the child nodes of the <var title="">furthest
5806: block</var> and append them to the element created in the last
5807: step.</p></li>
5808:
5809: <li><p>Append that new element to the <var title="">furthest
5810: block</var>.</p></li>
5811:
5812: <li><p>Remove the <var title="">formatting element</var> from the
5813: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5814: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5815: elements</a> at the position of the aforementioned
5816: bookmark.</p></li>
5817:
5818: <li><p>Remove the <var title="">formatting element</var> from the
5819: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
5820: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
5821: the position of the <var title="">furthest block</var> in that
5822: stack.</p></li>
5823:
5824: <li><p>Jump back to step 1 in this series of steps.</p></li>
5825:
1.334 mike 5826: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 5827: to change parents, it has been dubbed the "adoption agency
5828: algorithm" (in contrast with other possible algorithms for dealing
5829: with misnested content, which included the "incest algorithm", the
1.1 mike 5830: "secret affair algorithm", and the "Heisenberg algorithm").</p>
5831:
5832: </dd>
5833:
5834: <dt>A start tag whose tag name is "button"</dt>
5835: <dd>
5836:
5837: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5838: an element in scope">has a <code>button</code> element in
5839: scope</a>, then this is a <a href="#parse-error">parse error</a>;
5840: act as if an end tag with the tag name "button" had been seen,
5841: then reprocess the token.</p>
5842:
5843: <p>Otherwise:</p>
5844:
5845: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5846: any.</p>
5847:
5848: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5849:
5850: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5851: formatting elements</a>.</p>
5852:
5853: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5854:
5855: </dd>
5856:
5857: <dt>A start tag token whose tag name is one of: "applet",
5858: "marquee", "object"</dt>
5859: <dd>
5860:
5861: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5862: any.</p>
5863:
5864: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5865:
5866: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
5867: formatting elements</a>.</p>
5868:
5869: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5870:
5871: </dd>
5872:
5873: <dt>An end tag token whose tag name is one of: "applet", "button",
5874: "marquee", "object"</dt>
5875: <dd>
5876:
5877: <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>
5878: with the same tag name as that of the token, then this is a
5879: <a href="#parse-error">parse error</a>; ignore the token.</p>
5880:
5881: <p>Otherwise, run these steps:</p>
5882:
5883: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5884:
5885: <li><p>If the <a href="#current-node">current node</a> is not an element with
5886: the same tag name as that of the token, then this is a
5887: <a href="#parse-error">parse error</a>.</p></li>
5888:
5889: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5890: until an element with the same tag name as the token has been
5891: popped from the stack.</p></li>
5892:
5893: <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
5894: last marker</a>.</li>
5895:
5896: </ol></dd>
5897:
5898: <dt>A start tag whose tag name is "table"</dt>
5899: <dd>
5900:
5901: <p>If the <code>Document</code> is <em>not</em> set to
5902: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
5903: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
5904: <code>p</code> element in scope</a>, then act as if an end tag
5905: with the tag name "p" had been seen.</p> <!-- i hate myself (this
5906: quirk was basically caused by acid2; if i'd realised we could
5907: change the specs when i wrote acid2, we could have avoided having
5908: any parsing-mode quirks) -Hixie -->
5909:
5910: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5911:
5912: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5913:
5914: <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>
5915:
5916: </dd>
5917:
5918: <dt>A start tag whose tag name is one of: "area", "basefont",
5919: "bgsound", "br", "embed", "img", "input", "keygen", "spacer",
5920: "wbr"</dt>
5921: <dd>
5922:
5923: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5924: any.</p>
5925:
5926: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5927: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5928: elements</a>.</p>
5929:
5930: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5931: token's <i>self-closing flag</i></a>, if it is set.</p>
5932:
5933: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
5934: shouldn't really do it for <area>, <basefont>, <bgsound>, and
5935: <spacer> -->
5936:
5937: </dd>
5938:
5939: <dt>A start tag whose tag name is one of: "param", "source"</dt>
5940: <dd>
5941:
5942: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5943: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5944: elements</a>.</p>
5945:
5946: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5947: token's <i>self-closing flag</i></a>, if it is set.</p>
5948:
5949: </dd>
5950:
5951: <dt>A start tag whose tag name is "hr"</dt>
5952: <dd>
5953:
5954: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5955: an element in scope">has a <code>p</code> element in
5956: scope</a>, then act as if an end tag with the tag name
5957: "p" had been seen.</p>
5958:
5959: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5960: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5961: elements</a>.</p>
5962:
5963: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5964: token's <i>self-closing flag</i></a>, if it is set.</p>
5965:
5966: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5967:
5968: </dd>
5969:
5970: <dt>A start tag whose tag name is "image"</dt>
5971: <dd>
5972: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
5973: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
5974: 2005-12, studies showed that around 0.2% of pages used the
5975: <image> element. -->
5976: </dd>
5977:
5978: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
5979: <dd>
5980:
5981: <p><a href="#parse-error">Parse error</a>.</p>
5982:
5983: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
5984: pointer</a> is not null, then ignore the token.</p>
5985:
5986: <p>Otherwise:</p>
5987:
5988: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5989: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
5990: purely to reduce the number of errors (we don't care if they
5991: included the /, they're not supposed to be including the tag at
5992: all! -->
5993:
5994: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
5995:
5996: <p>If the token has an attribute called "action", set the
5997: <code title="attr-form-action">action</code> attribute on the
5998: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
5999: "action" attribute of the token.</p>
6000:
6001: <p>Act as if a start tag token with the tag name "hr" had been
6002: seen.</p>
6003:
6004: <p>Act as if a start tag token with the tag name "label" had been
6005: seen.</p>
6006:
6007: <p>Act as if a stream of character tokens had been seen (see below
6008: for what they should say).</p>
6009:
6010: <p>Act as if a start tag token with the tag name "input" had been
6011: seen, with all the attributes from the "isindex" token except
6012: "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
6013: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6014:
6015: <p>Act as if a stream of character tokens had been seen (see
6016: below for what they should say).</p>
6017:
6018: <p>Act as if an end tag token with the tag name "label" had been
6019: seen.</p>
6020:
6021: <p>Act as if a start tag token with the tag name "hr" had been
6022: seen.</p>
6023:
6024: <p>Act as if an end tag token with the tag name "form" had been
6025: seen.</p>
6026:
6027: <p>If the token has an attribute with the name "prompt", then the
6028: first stream of characters must be the same string as given in
6029: that attribute, and the second stream of characters must be
6030: empty. Otherwise, the two streams of character tokens together
6031: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
6032: equivalent of "This is a searchable index. Insert your search
6033: keywords here: (input field)" in the user's preferred
6034: language.</p>
6035:
6036: </dd>
6037:
6038: <dt>A start tag whose tag name is "textarea"</dt>
6039: <dd>
6040:
6041: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6042: token.</p></li>
6043:
6044: <li><p>If the next token is a U+000A LINE FEED (LF) character
6045: token, then ignore that token and move on to the next
6046: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6047: ignored as an authoring convenience.)</p></li>
6048:
1.541 mike 6049: <li><p>Switch the tokenizer to the the <a href="#rcdata-state">RCDATA
6050: state</a>.</p></li>
1.1 mike 6051:
6052: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6053: current <a href="#insertion-mode">insertion mode</a>.</p>
6054:
6055: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6056: ok".</p></li>
6057:
1.540 mike 6058: <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 6059:
6060: </ol></dd>
6061:
6062: <dt>A start tag whose tag name is "xmp"</dt>
6063: <dd>
6064:
1.233 mike 6065: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6066: an element in scope">has a <code>p</code> element in
6067: scope</a>, then act as if an end tag with the tag name
6068: "p" had been seen.</p>
6069:
1.1 mike 6070: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6071: any.</p>
6072:
6073: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6074:
1.91 mike 6075: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6076:
6077: </dd>
6078:
6079: <dt>A start tag whose tag name is "iframe"</dt>
6080: <dd>
6081:
6082: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6083:
1.91 mike 6084: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6085:
6086: </dd>
6087:
6088: <dt>A start tag whose tag name is "noembed"</dt>
6089: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6090: <dd>
6091:
1.91 mike 6092: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6093:
6094: </dd>
6095:
6096: <dt>A start tag whose tag name is "select"</dt>
6097: <dd>
6098:
6099: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6100: any.</p>
6101:
6102: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6103:
6104: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6105:
6106: <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>",
6107: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6108: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6109: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6110: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6111: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6112: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6113: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6114:
6115: </dd>
6116:
6117: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6118: <dd>
6119:
6120: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6121: element in scope">has an <code>option</code> element in
6122: scope</a>, then act as if an end tag with the tag name "option"
6123: had been seen.</p>
6124:
6125: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6126: any.</p>
6127:
6128: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6129:
6130: </dd>
6131:
6132: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6133: <dd>
6134:
6135: <!-- the parsing rules for ruby really don't match IE much at all,
6136: but in practice the markup used is very simple and so strict
6137: compatibility with IE isn't required. For example, as defined
6138: here we get very, very different behaviour than IE for
6139: pathological cases like:
6140:
6141: <ruby><ol><li><p>a<rt>b
6142: <ruby>a<rt>b<p>c
6143:
6144: But in practice most ruby markup falls into these cases:
6145:
6146: <ruby>a<rt>b</ruby>
6147: <ruby>a<rp>b<rt>c<rp>d</ruby>
6148: <ruby>a<rt>b</rt></ruby>
6149: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6150:
6151: -->
6152:
6153: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6154: element in scope">has a <code>ruby</code> element in scope</a>,
6155: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6156: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6157: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6158: node</a> up to the node immediately before the bottommost
6159: <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
6160: elements</a>.</p>
6161:
6162: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6163:
6164: </dd>
6165:
6166: <dt>An end tag whose tag name is "br"</dt>
6167: <dd>
6168: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6169: the tag name "br" had been seen. Ignore the end tag token.</p>
6170: </dd>
6171:
6172: <dt>A start tag whose tag name is "math"</dt>
6173: <dd>
6174:
6175: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6176: any.</p>
6177:
6178: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6179: fixes the case of MathML attributes that are not all
6180: lowercase.)</p>
6181:
6182: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6183: fixes the use of namespaced attributes, in particular XLink.)</p>
6184:
6185: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6186: <a href="#mathml-namespace">MathML namespace</a>.</p>
6187:
6188: <!-- If we ever change the frameset-ok flag to an insertion mode,
6189: the following change would be implied, except we'd have to do it
6190: even in the face of a self-closed tag:
6191: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6192: -->
6193:
6194: <p>If the token has its <i>self-closing flag</i> set, pop the
6195: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6196: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6197: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6198:
6199: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6200: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6201: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6202: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6203: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6204: foreign content">in foreign content</a>".</p>
6205:
6206: </dd>
6207:
6208: <dt>A start tag whose tag name is "svg"</dt>
6209: <dd>
6210:
6211: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6212: any.</p>
6213:
6214: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6215: the case of SVG attributes that are not all lowercase.)</p>
6216:
6217: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6218: fixes the use of namespaced attributes, in particular XLink in
6219: SVG.)</p>
6220:
6221: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
6222: <a href="#svg-namespace">SVG namespace</a>.</p>
6223:
6224: <!-- If we ever change the frameset-ok flag to an insertion mode,
6225: the following change would be implied, except we'd have to do it
6226: even in the face of a self-closed tag:
6227: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6228: -->
6229:
6230: <p>If the token has its <i>self-closing flag</i> set, pop the
6231: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6232: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6233: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6234:
6235: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6236: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6237: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6238: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6239: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6240: foreign content">in foreign content</a>".</p>
6241:
6242: </dd>
6243:
6244: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6245: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6246: "thead", "tr"</dt>
6247: <!--<dt>An end tag whose tag name is one of: "area", "base",
6248: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6249: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
6250: "noframes", "param", "script", "select", "source", "spacer",
6251: "style", "table", "textarea", "title", "wbr"</dt>-->
6252: <!--<dt>An end tag whose tag name is "noscript", if the
6253: <span>scripting flag</span> is enabled</dt>-->
6254: <dd>
6255: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6256: <!-- end tags are commented out because since they can never end
6257: up on the stack anyway, the default end tag clause will
6258: automatically handle them. we don't want to have text in the spec
6259: that is just an optimisation, as that detracts from the spec
6260: itself -->
6261: </dd>
6262:
6263: <dt>Any other start tag</dt>
6264: <dd>
6265:
6266: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6267: any.</p>
6268:
6269: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6270:
6271: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6272: element.</p>
6273:
6274: </dd>
6275:
6276: <dt>Any other end tag</dt>
6277: <dd>
6278:
6279: <p>Run the following steps:</p>
6280:
6281: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6282: node</a> (the bottommost node of the stack).</p></li>
6283:
6284: <li><p>If <var title="">node</var> has the same tag name as
6285: the end tag token, then:</p>
6286:
6287: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6288:
6289: <li><p>If the tag name of the end tag token does not match
6290: the tag name of the <a href="#current-node">current node</a>, this is a
6291: <a href="#parse-error">parse error</a>.</p></li>
6292:
6293: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6294: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6295:
6296: </ol></li>
6297:
6298: <li><p>Otherwise, if <var title="">node</var> is in neither the
6299: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6300: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6301: token, and abort these steps.</p></li>
6302:
6303: <li><p>Set <var title="">node</var> to the previous entry in the
6304: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6305:
6306: <li><p>Return to step 2.</p></li>
6307:
6308: </ol></dd>
6309:
1.540 mike 6310: </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 6311:
6312: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6313: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6314:
6315: <dl class="switch"><dt>A character token</dt>
6316: <dd>
6317:
6318: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6319: character</a> into the <a href="#current-node">current node</a>.</p>
6320:
6321: </dd>
6322:
6323: <dt>An end-of-file token</dt>
6324: <dd>
6325:
6326: <!-- can't be the fragment case -->
6327: <p><a href="#parse-error">Parse error</a>.</p>
6328:
6329: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6330: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6331: started"</a>.</p>
1.1 mike 6332:
6333: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6334: elements</a>.</p>
6335:
6336: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6337: insertion mode</a> and reprocess the current token.</p>
6338:
6339: </dd>
6340:
6341: <dt>An end tag whose tag name is "script"</dt>
6342: <dd>
6343:
6344: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6345: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6346:
6347: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6348: elements</a>.</p>
6349:
6350: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6351: insertion mode</a>.</p>
6352:
6353: <p>Let the <var title="">old insertion point</var> have the
6354: same value as the current <a href="#insertion-point">insertion point</a>. Let
6355: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6356: input character</a>.</p>
6357:
6358: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6359: one.</p>
6360:
6361: <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 6362: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6363: to be inserted into the tokenizer</a>, and might cause the
6364: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6365:
6366: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6367: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6368: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6369:
6370: <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
6371: <a href="#insertion-point">insertion point</a> to its previous value. This value
6372: might be the "undefined" value.)</p>
6373:
6374: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6375: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6376:
6377: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6378:
6379: <dd>
6380:
6381: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6382: processing of any nested invocations of the tokenizer, yielding
6383: control back to the caller. (Tokenization will resume when the
6384: caller returns to the "outer" tree construction stage.)</p>
6385:
6386: <p class="note">The tree construction stage of this particular
6387: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6388: 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 6389:
6390: </dd>
6391:
6392:
6393: <dt>Otherwise:</dt>
6394:
6395: <dd>
6396:
6397: <p>Follow these steps:</p>
6398:
1.484 mike 6399: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6400: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6401: parsing-blocking script</a>.</p></li>
6402:
6403: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6404: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6405: 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>
6406:
6407: <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
6408: scripts</a> and <var title="">the script</var>'s
6409: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6410:
6411: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6412: for this instance of the <a href="#html-parser">HTML parser</a>, such that
6413: <a href="browsers.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
6414: run.</p></li>
1.1 mike 6415:
6416: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6417: <a href="#next-input-character">next input character</a>.</p></li>
6418:
6419: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6420: by one (it should be zero before this step, so this sets it to
6421: one).</p></li>
6422:
1.484 mike 6423: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6424: <var title="">the script</var>.</p></li>
1.1 mike 6425:
6426: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6427: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6428: zero (which it always should be at this point), then set the
6429: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6430:
6431: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6432: again.</p></li>
6433:
1.484 mike 6434: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6435: script</a>, then repeat these steps from step 1.</p></li>
6436:
6437: </ol></dd>
6438:
6439: </dl></dd>
6440:
6441: <dt>Any other end tag</dt>
6442: <dd>
6443:
6444: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6445: elements</a>.</p>
6446:
6447: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6448: insertion mode</a>.</p>
6449:
6450: </dd>
6451:
6452: </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>
6453:
6454: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6455: mode: in table">in table</a>", tokens must be handled as follows:</p>
6456:
6457: <dl class="switch"><dt>A character token</dt>
6458: <dd>
6459:
6460: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6461: be an empty list of tokens.</p>
6462:
6463: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6464: <a href="#insertion-mode">insertion mode</a>.</p>
6465:
6466: <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
6467: reprocess the token.</p>
6468:
6469: </dd>
6470:
6471: <dt>A comment token</dt>
6472: <dd>
6473: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6474: node</a> with the <code title="">data</code> attribute set to
6475: the data given in the comment token.</p>
6476: </dd>
6477:
6478: <dt>A DOCTYPE token</dt>
6479: <dd>
6480: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6481: </dd>
6482:
6483: <dt>A start tag whose tag name is "caption"</dt>
6484: <dd>
6485:
6486: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6487: below.)</p>
6488:
6489: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6490: formatting elements</a>.</p>
6491:
6492: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6493: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6494:
6495: </dd>
6496:
6497: <dt>A start tag whose tag name is "colgroup"</dt>
6498: <dd>
6499:
6500: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6501: below.)</p>
6502:
6503: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6504: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6505: group</a>".</p>
6506:
6507: </dd>
6508:
6509: <dt>A start tag whose tag name is "col"</dt>
6510: <dd>
6511: <p>Act as if a start tag token with the tag name "colgroup"
6512: had been seen, then reprocess the current token.</p>
6513: </dd>
6514:
6515: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6516: <dd>
6517:
6518: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6519: below.)</p>
6520:
6521: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6522: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6523: body</a>".</p>
6524:
6525: </dd>
6526:
6527: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6528: <dd>
6529: <p>Act as if a start tag token with the tag name "tbody" had
6530: been seen, then reprocess the current token.</p>
6531: </dd>
6532:
6533: <dt>A start tag whose tag name is "table"</dt>
6534: <dd>
6535:
6536: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6537: the tag name "table" had been seen, then, if that token wasn't
6538: ignored, reprocess the current token.</p>
6539:
6540: <p class="note">The fake end tag token here can only be
6541: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6542:
6543: </dd>
6544:
6545: <dt>An end tag whose tag name is "table"</dt>
6546: <dd>
6547:
6548: <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
6549: scope</a> with the same tag name as the token, this is a
6550: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6551: case</a>)</p>
6552:
6553: <p>Otherwise:</p>
6554:
6555: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6556: element has been popped from the stack.</p>
6557:
6558: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6559:
6560: </dd>
6561:
6562: <dt>An end tag whose tag name is one of: "body", "caption",
6563: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6564: "thead", "tr"</dt>
6565: <dd>
6566: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6567: </dd>
6568:
6569: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6570: <dd>
6571:
6572: <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
6573: mode</a>.</p>
6574:
6575: </dd>
6576:
6577: <dt>A start tag whose tag name is "input"</dt>
6578: <dd>
6579:
6580: <p>If the token does not have an attribute with the name "type",
6581: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6582: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6583: else" entry below.</p>
6584:
6585: <p>Otherwise:</p>
6586:
6587: <p><a href="#parse-error">Parse error</a>.</p>
6588:
6589: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6590:
6591: <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
6592: open elements</a>.</p>
6593:
6594: </dd>
6595:
6596: <dt>An end-of-file token</dt>
6597: <dd>
6598:
6599: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6600: <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 6601: error</a>.</p>
6602:
6603: <p class="note">It can only be the <a href="#current-node">current node</a> in
6604: the <a href="#fragment-case">fragment case</a>.</p>
6605:
6606: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6607:
6608: </dd>
6609:
6610: <dt>Anything else</dt>
6611: <dd>
6612:
6613: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6614: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6615: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6616: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6617: <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
6618: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6619: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6620:
6621: </dd>
6622:
6623: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6624: back to a table context</dfn>, it means that the UA must, while
6625: 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 6626: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6627: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6628:
6629: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6630: <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 6631: case</a>.</p>
6632:
6633:
6634:
6635: <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>
6636:
6637: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6638: mode: in table text">in table text</a>", tokens must be handled
6639: as follows:</p>
6640:
6641: <dl class="switch"><dt>A character token</dt>
6642: <dd>
6643:
6644: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6645: tokens</a></var> list.</p>
6646:
6647: </dd>
6648:
6649:
6650: <dt>Anything else</dt>
6651: <dd>
6652:
6653: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6654: tokens</a></var> list are character tokens that are not one of U+0009
6655: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
6656: (FF), <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE, then
6657: reprocess those character tokens using the rules given in the
6658: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6659: table">in table</a>" insertion mode.</p>
6660:
6661: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6662: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6663: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6664:
6665: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6666: insertion mode</a> and reprocess the token.</p>
6667:
6668: </dd>
6669:
6670: </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>
6671:
6672: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6673: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6674:
6675: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6676: <dd>
6677:
6678: <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
6679: scope</a> with the same tag name as the token, this is a
6680: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6681: case</a>)</p>
6682:
6683: <p>Otherwise:</p>
6684:
6685: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6686:
6687: <p>Now, if the <a href="#current-node">current node</a> is not a
6688: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6689: error</a>.</p>
6690:
6691: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6692: element has been popped from the stack.</p>
6693:
6694: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6695: the last marker</a>.</p>
6696:
6697: <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>
6698:
6699: </dd>
6700:
6701: <dt>A start tag whose tag name is one of: "caption", "col",
6702: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6703: <dt>An end tag whose tag name is "table"</dt>
6704: <dd>
6705:
6706: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6707: name "caption" had been seen, then, if that token wasn't
6708: ignored, reprocess the current token.</p>
6709:
6710: <p class="note">The fake end tag token here can only be
6711: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6712:
6713: </dd>
6714:
6715: <dt>An end tag whose tag name is one of: "body", "col",
6716: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6717: "tr"</dt>
6718: <dd>
6719: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6720: </dd>
6721:
6722: <dt>Anything else</dt>
6723: <dd>
6724: <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
6725: mode</a>.</p>
6726: </dd>
6727:
6728: </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>
6729:
6730: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6731: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6732:
6733: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6734: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
6735: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
6736: <dd>
6737: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6738: the <a href="#current-node">current node</a>.</p>
6739: </dd>
6740:
6741: <dt>A comment token</dt>
6742: <dd>
6743: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
6744: node</a> with the <code title="">data</code> attribute set to
6745: the data given in the comment token.</p>
6746: </dd>
6747:
6748: <dt>A DOCTYPE token</dt>
6749: <dd>
6750: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6751: </dd>
6752:
6753: <dt>A start tag whose tag name is "html"</dt>
6754: <dd>
6755: <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
6756: mode</a>.</p>
6757: </dd>
6758:
6759: <dt>A start tag whose tag name is "col"</dt>
6760: <dd>
6761:
6762: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6763: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6764: elements</a>.</p>
6765:
6766: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6767: token's <i>self-closing flag</i></a>, if it is set.</p>
6768:
6769: </dd>
6770:
6771: <dt>An end tag whose tag name is "colgroup"</dt>
6772: <dd>
6773:
6774: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6775: <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 6776: error</a>; ignore the token. (<a href="#fragment-case">fragment
6777: case</a>)</p>
6778:
6779: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6780: 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
6781: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6782: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6783:
6784: </dd>
6785:
6786: <dt>An end tag whose tag name is "col"</dt>
6787: <dd>
6788: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6789: </dd>
6790:
6791: <dt>An end-of-file token</dt>
6792: <dd>
6793:
1.159 mike 6794: <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 6795: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
6796: case</a>)</p>
6797:
6798: <p>Otherwise, act as described in the "anything else" entry
6799: below.</p>
6800:
6801: </dd>
6802:
6803: <dt>Anything else</dt>
6804: <dd>
6805:
6806: <p>Act as if an end tag with the tag name "colgroup" had been
6807: seen, and then, if that token wasn't ignored, reprocess the
6808: current token.</p>
6809:
6810: <p class="note">The fake end tag token here can only be
6811: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6812:
6813: </dd>
6814:
6815: </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>
6816:
6817: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
6818: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
6819:
6820: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
6821: <dd>
6822:
6823: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6824: context</a>. (See below.)</p>
6825:
6826: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6827: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
6828: in row">in row</a>".</p>
6829:
6830: </dd>
6831:
6832: <dt>A start tag whose tag name is one of: "th", "td"</dt>
6833: <dd>
6834: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
6835: the tag name "tr" had been seen, then reprocess the current
6836: token.</p>
6837: </dd>
6838:
6839: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6840: "thead"</dt>
6841: <dd>
6842:
6843: <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
6844: scope</a> with the same tag name as the token, this is a
6845: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6846:
6847: <p>Otherwise:</p>
6848:
6849: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
6850: context</a>. (See below.)</p>
6851:
6852: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
6853: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
6854: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6855:
6856: </dd>
6857:
6858: <dt>A start tag whose tag name is one of: "caption", "col",
6859: "colgroup", "tbody", "tfoot", "thead"</dt>
6860: <dt>An end tag whose tag name is "table"</dt>
6861: <dd>
6862:
6863: <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
6864: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
6865: element in table scope</a>, this is a <a href="#parse-error">parse
6866: error</a>. Ignore the token. (<a href="#fragment-case">fragment
6867: case</a>)</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>Act as if an end tag with the same tag name as the
6875: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
6876: been seen, then reprocess the current token.</p>
6877:
6878: </dd>
6879:
6880: <dt>An end tag whose tag name is one of: "body", "caption",
6881: "col", "colgroup", "html", "td", "th", "tr"</dt>
6882: <dd>
6883: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6884: </dd>
6885:
6886: <dt>Anything else</dt>
6887: <dd>
6888: <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
6889: mode</a>.</p>
6890: </dd>
6891:
6892: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
6893: back to a table body context</dfn>, it means that the UA must,
6894: 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 6895: <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 6896: element, pop elements from the <a href="#stack-of-open-elements">stack of open
6897: elements</a>.</p>
6898:
6899: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6900: <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 6901: case</a>.</p>
6902:
6903:
6904: <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>
6905:
6906: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
6907: mode: in row">in row</a>", tokens must be handled as follows:</p>
6908:
6909: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
6910: <dd>
6911:
6912: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
6913: context</a>. (See below.)</p>
6914:
6915: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
6916: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
6917: in cell">in cell</a>".</p>
6918:
6919: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6920: formatting elements</a>.</p>
6921:
6922: </dd>
6923:
6924: <dt>An end tag whose tag name is "tr"</dt>
6925: <dd>
6926:
6927: <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
6928: scope</a> with the same tag name as the token, this is a
6929: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6930: case</a>)</p>
6931:
6932: <p>Otherwise:</p>
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>Pop the <a href="#current-node">current node</a> (which will be a
6938: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
6939: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6940: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6941: body</a>".</p>
6942:
6943: </dd>
6944:
6945: <dt>A start tag whose tag name is one of: "caption", "col",
6946: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
6947: <dt>An end tag whose tag name is "table"</dt>
6948: <dd>
6949:
6950: <p>Act as if an end tag with the tag name "tr" had been seen,
6951: then, if that token wasn't ignored, reprocess the current
6952: token.</p>
6953:
6954: <p class="note">The fake end tag token here can only be
6955: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6956:
6957: </dd>
6958:
6959: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
6960: "thead"</dt>
6961: <dd>
6962:
6963: <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
6964: scope</a> with the same tag name as the token, this is a
6965: <a href="#parse-error">parse error</a>. Ignore the token.</p>
6966:
6967: <p>Otherwise, act as if an end tag with the tag name "tr" had
6968: been seen, then reprocess the current token.</p>
6969:
6970: </dd>
6971:
6972: <dt>An end tag whose tag name is one of: "body", "caption",
6973: "col", "colgroup", "html", "td", "th"</dt>
6974: <dd>
6975: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6976: </dd>
6977:
6978: <dt>Anything else</dt>
6979: <dd>
6980: <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
6981: mode</a>.</p>
6982: </dd>
6983:
6984: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
6985: back to a table row context</dfn>, it means that the UA must,
6986: 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 6987: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6988: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6989:
6990: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6991: <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 6992: case</a>.</p>
6993:
6994:
6995: <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>
6996:
6997: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
6998: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
6999:
7000: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7001: <dd>
7002:
7003: <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
7004: scope</a> with the same tag name as that of the token, then
7005: this is a <a href="#parse-error">parse error</a> and the token must be
7006: ignored.</p>
7007:
7008: <p>Otherwise:</p>
7009:
7010: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7011:
7012: <p>Now, if the <a href="#current-node">current node</a> is not an element
7013: with the same tag name as the token, then this is a
7014: <a href="#parse-error">parse error</a>.</p>
7015:
7016: <p>Pop elements from this stack until an element with the same
7017: tag name as the token has been popped from the stack.</p>
7018:
7019: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7020: the last marker</a>.</p>
7021:
7022: <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
7023: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7024: this point.)</p>
7025:
7026: </dd>
7027:
7028: <dt>A start tag whose tag name is one of: "caption", "col",
7029: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7030: <dd>
7031:
7032: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7033: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7034: a <code>td</code> or <code>th</code> element in table
7035: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7036: the token. (<a href="#fragment-case">fragment case</a>)</p>
7037:
7038: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7039: reprocess the current token.</p>
7040:
7041: </dd>
7042:
7043: <dt>An end tag whose tag name is one of: "body", "caption",
7044: "col", "colgroup", "html"</dt>
7045: <dd>
7046: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7047: </dd>
7048:
7049: <dt>An end tag whose tag name is one of: "table", "tbody",
7050: "tfoot", "thead", "tr"</dt>
7051: <dd>
7052:
7053: <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
7054: scope</a> with the same tag name as that of the token
7055: (which can only happen for "tbody", "tfoot" and "thead", or,
7056: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7057: error</a> and the token must be ignored.</p>
7058:
7059: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7060: reprocess the current token.</p>
7061:
7062: </dd>
7063:
7064: <dt>Anything else</dt>
7065: <dd>
7066: <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
7067: mode</a>.</p>
7068: </dd>
7069:
7070: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7071: mean to run the following algorithm:</p>
7072:
7073: <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>
7074: element in table scope</a>, then act as if an end tag token
7075: with the tag name "td" had been seen.</p></li>
7076:
7077: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7078: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7079: <code>th</code> element in table scope</a>; act as if an end
7080: tag token with the tag name "th" had been seen.</p></li>
7081:
7082: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7083: 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
7084: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7085: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7086: cell</a>".</p>
7087:
7088:
7089: <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>
7090:
7091: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7092: mode: in select">in select</a>", tokens must be handled as follows:</p>
7093:
7094: <dl class="switch"><dt>A character token</dt>
7095: <dd>
7096: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7097: character</a> into the <a href="#current-node">current node</a>.</p>
7098: </dd>
7099:
7100: <dt>A comment token</dt>
7101: <dd>
7102: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7103: node</a> with the <code title="">data</code> attribute set to
7104: the data given in the comment token.</p>
7105: </dd>
7106:
7107: <dt>A DOCTYPE token</dt>
7108: <dd>
7109: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7110: </dd>
7111:
7112: <dt>A start tag whose tag name is "html"</dt>
7113: <dd>
7114: <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
7115: mode</a>.</p>
7116: </dd>
7117:
7118: <dt>A start tag whose tag name is "option"</dt>
7119: <dd>
7120:
7121: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7122: element, act as if an end tag with the tag name "option" had
7123: been seen.</p>
7124:
7125: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7126:
7127: </dd>
7128:
7129: <dt>A start tag whose tag name is "optgroup"</dt>
7130: <dd>
7131:
7132: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7133: element, act as if an end tag with the tag name "option" had
7134: been seen.</p>
7135:
7136: <p>If the <a href="#current-node">current node</a> is an
7137: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7138: tag name "optgroup" had been seen.</p>
7139:
7140: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7141:
7142: </dd>
7143:
7144: <dt>An end tag whose tag name is "optgroup"</dt>
7145: <dd>
7146:
7147: <p>First, if the <a href="#current-node">current node</a> is an
7148: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7149: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7150: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7151: the tag name "option" had been seen.</p>
7152:
7153: <p>If the <a href="#current-node">current node</a> is an
7154: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7155: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7156: <a href="#parse-error">parse error</a>; ignore the token.</p>
7157:
7158: </dd>
7159:
7160: <dt>An end tag whose tag name is "option"</dt>
7161: <dd>
7162:
7163: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7164: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7165: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7166: error</a>; ignore the token.</p>
7167:
7168: </dd>
7169:
7170: <dt>An end tag whose tag name is "select"</dt>
7171: <dd>
7172:
7173: <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
7174: scope</a> with the same tag name as the token, this is a
7175: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7176: case</a>)</p>
7177:
7178: <p>Otherwise:</p>
7179:
7180: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7181: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7182: stack.</p>
7183:
7184: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7185:
7186: </dd>
7187:
7188: <dt>A start tag whose tag name is "select"</dt>
7189: <dd>
7190:
7191: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7192: an end tag with the tag name "select" instead.</p>
7193:
7194: </dd>
7195:
7196: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7197: <dd>
1.73 mike 7198:
7199: <p><a href="#parse-error">Parse error</a>.</p>
7200:
1.124 mike 7201: <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>
7202: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7203: case</a>)</p>
1.73 mike 7204:
7205: <p>Otherwise, act as if an end tag with the tag name "select" had
7206: been seen, and reprocess the token.</p>
7207:
1.1 mike 7208: </dd>
7209:
7210: <dt>A start tag token whose tag name is "script"</dt>
7211: <dd>
7212: <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
7213: mode</a>.</p>
7214: </dd>
7215:
7216: <dt>An end-of-file token</dt>
7217: <dd>
7218:
7219: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7220: <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 7221: error</a>.</p>
7222:
7223: <p class="note">It can only be the <a href="#current-node">current node</a> in
7224: the <a href="#fragment-case">fragment case</a>.</p>
7225:
7226: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7227:
7228: </dd>
7229:
7230: <dt>Anything else</dt>
7231: <dd>
7232: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7233: </dd>
7234:
7235: </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>
7236:
7237: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7238: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7239:
7240: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7241: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7242: <dd>
7243: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7244: name "select" had been seen, and reprocess the token.</p>
7245: </dd>
7246:
7247: <dt>An end tag whose tag name is one of: "caption", "table",
7248: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7249: <dd>
7250:
7251: <p><a href="#parse-error">Parse error</a>.</p>
7252:
7253: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7254: element in table scope</a> with the same tag name as that
7255: of the token, then act as if an end tag with the tag name
7256: "select" had been seen, and reprocess the token. Otherwise,
7257: ignore the token.</p>
7258:
7259: </dd>
7260:
7261: <dt>Anything else</dt>
7262: <dd>
7263: <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
7264: mode</a>.</p>
7265: </dd>
7266:
1.168 mike 7267: </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 7268:
7269: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7270: mode: in foreign content">in foreign content</a>", tokens must be
7271: handled as follows:</p>
7272:
7273: <dl class="switch"><dt>A character token</dt>
7274: <dd>
7275:
7276: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7277: character</a> into the <a href="#current-node">current node</a>.</p>
7278:
7279: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
7280: LINE FEED (LF), U+000C FORM FEED (FF), <!--U+000D CARRIAGE RETURN
7281: (CR),--> or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
7282: flag</a> to "not ok".</p>
7283:
7284: </dd>
7285:
7286: <dt>A comment token</dt>
7287: <dd>
7288: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7289: node</a> with the <code title="">data</code> attribute set to
7290: the data given in the comment token.</p>
7291: </dd>
7292:
7293: <dt>A DOCTYPE token</dt>
7294: <dd>
7295: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7296: </dd>
7297:
7298: <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>
7299: <dd>
7300:
7301: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7302: elements</a>.</p>
7303:
7304: <p>Let the <var title="">old insertion point</var> have the
7305: same value as the current <a href="#insertion-point">insertion point</a>. Let
7306: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7307: input character</a>.</p>
7308:
7309: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7310: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7311:
7312: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7313: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7314: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7315:
1.159 mike 7316: <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 7317: tokenizer</a>, the parser will not be executed reentrantly,
7318: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7319:
7320: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7321: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7322: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7323:
7324: <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
7325: <a href="#insertion-point">insertion point</a> to its previous value. This value
7326: might be the "undefined" value.)</p>
7327:
7328: </dd>
7329:
7330: <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>
7331: <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>
7332: <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>
7333: <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>
7334: <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>
7335: <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>
7336: <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>
7337: <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>
7338: <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>
7339: <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>
7340: <dt>An end tag</dt>
7341: <dd>
7342:
7343: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7344: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7345:
7346: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7347: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7348: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7349: element in scope">in scope</a> that has a namespace other than
7350: the <a href="#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7351: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7352:
7353: </dd>
7354:
7355: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7356: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7357: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7358: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7359: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7360: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7361: "li", "listing"<!-- so that pre and listing can be handled
7362: uniformly throughout the parser -->, "menu", "meta", "nobr",
7363: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7364: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7365: "span", "strong", "strike"<!-- so that s and strike can be handled
7366: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7367: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7368: list was determined empirically by studying over 6,000,000,000
1.422 mike 7369: pages that were specifically not XML pages -->
7370: <dt>A start tag whose tag name is "font", if the token has any
7371: attributes named "color", "face", or "size"</dt> <!-- the
7372: attributes here are required so that SVG <font> will go through as
7373: SVG but legacy <font>s won't -->
7374: <dt>An end-of-file token</dt> <dd>
1.1 mike 7375:
7376: <p><a href="#parse-error">Parse error</a>.</p>
7377:
7378: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
7379: the <a href="#current-node">current node</a> is in the <a href="#html-namespace-0">HTML
7380: namespace</a>.</p>
7381:
7382: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#secondary-insertion-mode">secondary
7383: insertion mode</a>, and reprocess the token.</p>
7384:
7385: </dd>
7386:
7387: <dt>Any other start tag</dt>
7388: <dd>
7389:
7390: <p>If the <a href="#current-node">current node</a> is an element in the
7391: <a href="#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
7392: attributes</a> for the token. (This fixes the case of MathML
7393: attributes that are not all lowercase.)</p>
7394:
7395: <p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7396: namespace</a>, and the token's tag name is one of the ones in
7397: the first column of the following table, change the tag name to
7398: the name given in the corresponding cell in the second
7399: column. (This fixes the case of SVG elements that are not all
7400: lowercase.)</p>
7401:
7402: <table><thead><tr><th> Tag name </th><th> Element name
7403: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7404: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7405: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7406: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7407: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7408: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7409: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7410: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7411: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7412: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7413: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7414: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7415: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7416: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7417: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7418: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7419: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7420: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7421: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7422: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7423: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7424: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7425: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7426: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7427: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7428: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7429: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7430: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7431: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7432: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7433: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7434: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7435: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7436: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7437: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7438: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7439: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
7440: </td></tr></tbody></table><p>If the <a href="#current-node">current node</a> is an element in the <a href="#svg-namespace">SVG
7441: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7442: token. (This fixes the case of SVG attributes that are not all
7443: lowercase.)</p>
7444:
7445: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7446: fixes the use of namespaced attributes, in particular XLink in
7447: SVG.)</p>
7448:
7449: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7450: same namespace as the <a href="#current-node">current node</a>.</p>
7451:
7452: <p>If the token has its <i>self-closing flag</i> set, pop the
7453: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7454: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7455: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7456:
7457: </dd>
7458:
7459: </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>
7460:
7461: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7462: mode: after body">after body</a>", tokens must be handled as follows:</p>
7463:
7464: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7465: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7466: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7467: <dd>
7468: <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
7469: mode</a>.</p>
7470: </dd>
7471:
7472: <dt>A comment token</dt>
7473: <dd>
7474: <p>Append a <code>Comment</code> node to the first element in
1.159 mike 7475: 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 7476: element), with the <code title="">data</code> attribute set to
7477: the data given in the comment token.</p>
7478: </dd>
7479:
7480: <dt>A DOCTYPE token</dt>
7481: <dd>
7482: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7483: </dd>
7484:
7485: <dt>A start tag whose tag name is "html"</dt>
7486: <dd>
7487: <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
7488: mode</a>.</p>
7489: </dd>
7490:
7491: <dt>An end tag whose tag name is "html"</dt>
7492: <dd>
7493:
7494: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7495: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7496: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7497:
7498: <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
7499: body</a>".</p>
7500:
7501: </dd>
7502:
7503: <dt>An end-of-file token</dt>
7504: <dd>
7505: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7506: </dd>
7507:
7508: <dt>Anything else</dt>
7509: <dd>
7510:
7511: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7512: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7513: body</a>" and reprocess the token.</p>
7514:
7515: </dd>
7516:
7517: </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>
7518:
7519: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7520: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7521:
7522: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7523: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7524: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7525: <dd>
7526: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7527: the <a href="#current-node">current node</a>.</p>
7528: </dd>
7529:
7530: <dt>A comment token</dt>
7531: <dd>
7532: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7533: node</a> with the <code title="">data</code> attribute set to
7534: the data given in the comment token.</p>
7535: </dd>
7536:
7537: <dt>A DOCTYPE token</dt>
7538: <dd>
7539: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7540: </dd>
7541:
7542: <dt>A start tag whose tag name is "html"</dt>
7543: <dd>
7544: <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
7545: mode</a>.</p>
7546: </dd>
7547:
7548: <dt>A start tag whose tag name is "frameset"</dt>
7549: <dd>
7550: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7551: </dd>
7552:
7553: <dt>An end tag whose tag name is "frameset"</dt>
7554: <dd>
7555:
7556: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7557: <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 7558: error</a>; ignore the token. (<a href="#fragment-case">fragment
7559: case</a>)</p>
7560:
7561: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7562: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7563:
7564: <p>If the parser was <em>not</em> originally created as part
7565: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7566: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7567: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7568: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7569: frameset</a>".</p>
7570:
7571: </dd>
7572:
7573: <dt>A start tag whose tag name is "frame"</dt>
7574: <dd>
7575:
7576: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7577: Immediately pop the <a href="#current-node">current node</a> off the
7578: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7579:
7580: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7581: token's <i>self-closing flag</i></a>, if it is set.</p>
7582:
7583: </dd>
7584:
7585: <dt>A start tag whose tag name is "noframes"</dt>
7586: <dd>
7587: <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
7588: mode</a>.</p>
7589: </dd>
7590:
7591: <dt>An end-of-file token</dt>
7592: <dd>
7593:
7594: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7595: <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 7596: error</a>.</p>
7597:
7598: <p class="note">It can only be the <a href="#current-node">current node</a> in
7599: the <a href="#fragment-case">fragment case</a>.</p>
7600:
7601: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7602:
7603: </dd>
7604:
7605: <dt>Anything else</dt>
7606: <dd>
7607: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7608: </dd>
7609:
7610: </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>
7611:
7612: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7613: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7614:
7615: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7616: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7617: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7618: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7619: <dd>
7620: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7621: the <a href="#current-node">current node</a>.</p>
7622: </dd>
7623:
7624: <dt>A comment token</dt>
7625: <dd>
7626: <p>Append a <code>Comment</code> node to the <a href="#current-node">current
7627: node</a> with the <code title="">data</code> attribute set to
7628: the data given in the comment token.</p>
7629: </dd>
7630:
7631: <dt>A DOCTYPE token</dt>
7632: <dd>
7633: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7634: </dd>
7635:
7636: <dt>A start tag whose tag name is "html"</dt>
7637: <dd>
7638: <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
7639: mode</a>.</p>
7640: </dd>
7641:
7642: <dt>An end tag whose tag name is "html"</dt>
7643: <dd>
7644: <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
7645: frameset</a>".</p>
7646: </dd>
7647:
7648: <dt>A start tag whose tag name is "noframes"</dt>
7649: <dd>
7650: <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
7651: mode</a>.</p>
7652: </dd>
7653:
7654: <dt>An end-of-file token</dt>
7655: <dd>
7656: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7657: </dd>
7658:
7659: <dt>Anything else</dt>
7660: <dd>
7661: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7662: </dd>
7663:
1.336 mike 7664: </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 7665:
7666: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7667: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7668:
7669: <dl class="switch"><dt>A comment token</dt>
7670: <dd>
7671: <p>Append a <code>Comment</code> node to the <code>Document</code>
7672: object with the <code title="">data</code> attribute set to the
7673: data given in the comment token.</p>
7674: </dd>
7675:
7676: <dt>A DOCTYPE token</dt>
7677: <dt>A character token that is one of U+0009 CHARACTER
7678: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7679: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7680: <dt>A start tag whose tag name is "html"</dt>
7681: <dd>
7682: <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
7683: mode</a>.</p>
7684: </dd>
7685:
7686: <dt>An end-of-file token</dt>
7687: <dd>
7688: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7689: </dd>
7690:
7691: <dt>Anything else</dt>
7692: <dd>
7693: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7694: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7695: reprocess the token.</p>
7696: </dd>
7697:
7698: </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>
7699:
7700: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7701: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7702:
7703: <dl class="switch"><dt>A comment token</dt>
7704: <dd>
7705: <p>Append a <code>Comment</code> node to the <code>Document</code>
7706: object with the <code title="">data</code> attribute set to the
7707: data given in the comment token.</p>
7708: </dd>
7709:
7710: <dt>A DOCTYPE token</dt>
7711: <dt>A character token that is one of U+0009 CHARACTER
7712: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
7713: <!--U+000D CARRIAGE RETURN (CR),--> or U+0020 SPACE</dt>
7714: <dt>A start tag whose tag name is "html"</dt>
7715: <dd>
7716: <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
7717: mode</a>.</p>
7718: </dd>
7719:
7720: <dt>An end-of-file token</dt>
7721: <dd>
7722: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7723: </dd>
7724:
7725: <dt>A start tag whose tag name is "noframes"</dt>
7726: <dd>
7727: <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
7728: mode</a>.</p>
7729: </dd>
7730:
7731: <dt>Anything else</dt>
7732: <dd>
7733: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7734: </dd>
7735:
1.266 mike 7736: </dl></div><div class="impl">
7737:
7738: <h4 id="the-end"><span class="secno">9.2.6 </span>The end</h4>
1.1 mike 7739:
7740: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7741: the document, the user agent must run the following steps:</p>
1.1 mike 7742:
1.484 mike 7743: <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
7744: "interactive" <!-- this also synchronously fires an event --> and
7745: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7746:
7747: <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
7748: document has finished parsing</a> is not empty, run these
7749: substeps:</p>
7750:
7751: <ol><li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until the first
7752: <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
7753: execute when the document has finished parsing</a> has its
7754: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7755: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7756: blocking scripts</a>.</p></li>
7757:
7758: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
7759: 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
7760: execute when the document has finished parsing</a>.</p></li>
7761:
7762: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
7763: <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
7764: finished parsing</a> (i.e. shift out the first entry in the
7765: list).</p></li>
7766:
7767: <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
7768: document has finished parsing</a> is still not empty, repeat
7769: these substeps again from substep 1.</p>
7770:
7771: </li></ol></li>
7772:
7773: <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
7774: scripts that will execute as soon as possible</a> is
7775: empty.</p></li>
7776:
7777: <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
7778: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
7779: <code>Document</code>.</p></li>
7780:
7781: <li><p><a href="browsers.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
7782: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
7783: the <code>Document</code>.</p></li>
7784:
7785: <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
7786: readiness</a> to "complete". <!-- this also fires an event
7787: synchronously during the task --></p></li>
1.1 mike 7788:
1.484 mike 7789: <li><p>If the <code>Document</code> is in a <a href="browsers.html#browsing-context">browsing
1.1 mike 7790: 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 7791: simple event</a> named <code title="event-load">load</code> at
1.1 mike 7792: the <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
7793: its <code title="dom-event-target">target</code> set to the
7794: <code>Document</code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 7795: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 7796:
1.484 mike 7797: <li><p>If the <code>Document</code> has a <a href="history.html#pending-state-object">pending state
1.1 mike 7798: 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
7799: <code>Document</code>'s <code><a href="browsers.html#window">Window</a></code> object using the
7800: <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
7801: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 7802: must bubble but not be cancelable and has no default
7803: action.</p></li>
1.1 mike 7804:
1.484 mike 7805: </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
7806: <a href="browsers.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 7807:
1.266 mike 7808: </div><div class="impl">
1.1 mike 7809:
7810: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">9.2.7 </span>Coercing an HTML DOM into an infoset</h4>
7811:
7812: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
7813: conjunction with an XML pipeline, it is possible that the
7814: constructed DOM is not compatible with the XML tool chain in certain
7815: subtle ways. For example, an XML toolchain might not be able to
7816: represent attributes with the name <code title="">xmlns</code>,
7817: since they conflict with the Namespaces in XML syntax. There is also
7818: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
7819: included in the DOM itself. This section specifies some rules for
7820: handling these issues.</p>
7821:
7822: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
7823: drop DOCTYPEs altogether.</p>
7824:
7825: <p>If the XML API doesn't support attributes in no namespace that
7826: are named "<code title="">xmlns</code>", attributes whose names
7827: start with "<code title="">xmlns:</code>", or attributes in the
7828: <a href="#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
7829: attributes.</p>
7830:
7831: <p>The tool may annotate the output with any namespace declarations
7832: required for proper operation.</p>
7833:
7834: <p>If the XML API being used restricts the allowable characters in
7835: the local names of elements and attributes, then the tool may map
7836: all element and attribute local names that the API wouldn't support
7837: to a set of names that <em>are</em> allowed, by replacing any
7838: character that isn't supported with the uppercase letter U and the
7839: six digits of the character's Unicode code point when expressed in
7840: hexadecimal, using digits 0-9 and capital letters A-F as the
7841: symbols, in increasing numeric order.</p>
7842:
7843: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
7844: parser</a>, though it is neither a legal HTML element name nor a
7845: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
7846: element name (though it's still not legal in HTML by any means).</p>
7847:
7848: <p class="example">As another example, consider the attribute
7849: <code>xlink:href</code>. Used on a MathML element, it becomes, after
7850: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
7851: attribute with a prefix "<code title="">xlink</code>" and a local
7852: name "<code title="">href</code>". However, used on an HTML element,
7853: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
7854: might not be accepted by an XML API. It could thus get converted,
7855: becoming "<code title="">xlinkU00003Ahref</code>".</p>
7856:
7857: <p class="note">The resulting names from this conversion
7858: conveniently can't clash with any attribute generated by the
7859: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
7860: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
7861: algorithm's table.</p>
7862:
7863: <p>If the XML API restricts comments from having two consecutive
7864: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
7865: U+0020 SPACE character between any such offending characters.</p>
7866:
7867: <p>If the XML API restricts comments from ending in a
7868: U+002D HYPHEN-MINUS character (-), the tool may insert a single
7869: U+0020 SPACE character at the end of such comments.</p>
7870:
7871: <p>If the XML API restricts allowed characters in character data,
1.439 mike 7872: attribute values, or comments, the tool may replace any U+000C FORM
7873: FEED (FF) character with a U+0020 SPACE character, and any other
7874: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 7875:
7876: <p>If the tool has no way to convey out-of-band information, then
7877: the tool may drop the following information:</p>
7878:
7879: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no quirks mode</a></i>,
7880: <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>
7881:
7882: <li>The association between form controls and forms that aren't
7883: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
7884: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
7885:
7886: </ul><p class="note">The mutations allowed by this section apply
7887: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
7888: applied. For example, a <code title=""><a::></code> start tag
7889: will be closed by a <code title=""></a::></code> end tag, and
7890: never by a <code title=""></aU00003AU00003A></code> end tag, even
7891: if the user agent is using the rules above to then generate an
7892: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
7893:
1.266 mike 7894: </div><div class="impl">
1.1 mike 7895:
1.35 mike 7896: <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 7897:
7898: <p><i>This section is non-normative.</i></p>
7899:
7900: <p>This section examines some erroneous markup and discusses how
7901: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
7902:
7903:
7904: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">9.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
7905:
7906: <p><i>This section is non-normative.</i></p>
7907:
7908: <p>The most-often discussed example of erroneous markup is as
7909: follows:</p>
7910:
7911: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
7912:
7913: <p>The parsing of this markup is straightforward up to the "3". At
7914: this point, the DOM looks like this:</p>
7915:
1.159 mike 7916: <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
7917: 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 7918: <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
7919: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
7920: <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>
7921:
7922: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
7923: invoked. This is a simple case, in that the <var title="">formatting
7924: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
7925: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7926: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7927: <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 7928: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
7929: DOM tree is unmodified at this point.</p>
7930:
7931: <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
7932: the active formatting elements</a>, in this case just the
7933: <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
7934: for the "4" text node. After the end tag token for the "i" is also
7935: received, and the "5" text node is inserted, the DOM looks as
7936: follows:</p>
7937:
1.159 mike 7938: <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 7939:
7940: <p><i>This section is non-normative.</i></p>
7941:
7942: <p>A case similar to the previous one is the following:</p>
7943:
7944: <pre><b>1<p>2</b>3</p></pre>
7945:
7946: <p>Up to the "2" the parsing here is straightforward:</p>
7947:
1.159 mike 7948: <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 7949: "b" is parsed.</p>
7950:
7951: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 7952: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
7953: <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 7954: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
7955: <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>
7956:
7957: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
7958: in the previous example. However, in this case, there <em>is</em> a
7959: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
7960: this time the adoption agency algorithm isn't skipped over.</p>
7961:
1.159 mike 7962: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 7963: element. A conceptual "bookmark" marks the position of the
7964: <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
7965: elements</a>, but since that list has only one element in it,
7966: it won't have much effect.</p>
7967:
7968: <p>As the algorithm progresses, <var title="">node</var> ends up set
7969: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
7970: node</var> ends up set to the <var title="">furthest block</var>
7971: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
7972:
7973: <p>The <var title="">last node</var> gets appended (moved) to the
7974: <var title="">common ancestor</var>, so that the DOM looks like:</p>
7975:
1.159 mike 7976: <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 7977: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
7978:
1.159 mike 7979: <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 7980: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
7981:
1.159 mike 7982: <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 7983: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
7984: elements</a>, so that when the "3" is parsed, it is appended to
7985: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
7986:
1.159 mike 7987: <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 7988:
7989: <p><i>This section is non-normative.</i></p>
7990:
7991: <p>Error handling in tables is, for historical reasons, especially
7992: strange. For example, consider the following markup:</p>
7993:
7994: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
7995:
7996: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
7997: directly inside a table like that, and the parser handles this case
7998: 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
7999: examining the DOM tree as it stands just after the
8000: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8001:
1.159 mike 8002: <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 8003: tag has been seen:</p>
8004:
1.159 mike 8005: <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
8006: 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 8007: <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
8008: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8009: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8010: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8011: table">in table</a>".</p>
8012:
8013: <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
8014: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8015: 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
8016: then handled in a rather straight-forward manner, taking the parser
8017: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8018: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8019: row</a>" insertion modes, after which the DOM looks as
8020: follows:</p>
8021:
1.159 mike 8022: <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
8023: 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 8024: <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
8025: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8026: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8027: mode: in row">in row</a>".</p>
8028:
8029: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8030: <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
8031: 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
8032: mode</a>).</p>
8033:
1.159 mike 8034: <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 8035: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8036: node:</p>
8037:
1.159 mike 8038: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><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 8039: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8040: 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 8041: 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
8042: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8043: marker having been removed by the "td" end tag token); and the
8044: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8045: table body">in table body</a>".</p>
8046:
8047: <p>Thus it is that the "bbb" character tokens are found. These
8048: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8049: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8050: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8051: body">in table body</a>"). The character tokens are collected,
8052: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8053: seen, they are processed as a group. Since they are not all spaces,
8054: 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,
8055: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8056: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8057: parent">foster parenting</a>.</p>
8058:
8059: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8060: active formatting elements are reconstructed</a>, a
8061: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8062: parent">foster parented</a>, and then the "bbb" text node is
8063: appended to it:</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="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
8066: <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 8067: <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
8068: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8069: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8070: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8071: mode: in table body">in table body</a>".</p>
8072:
8073: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8074: character">space characters</a> instead of "bbb", then those
8075: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8076: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8077:
8078: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8079: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8080: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8081: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8082: elements</a>, so the "ccc" character tokens after the table
8083: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8084: time after the table:</p>
8085:
1.159 mike 8086: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="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 8087:
8088: <p><i>This section is non-normative.</i></p>
8089:
8090: <p>Consider the following markup, which for this example we will
8091: 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 8092: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8093: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8094:
8095: <pre><div id=a>
8096: <script>
8097: var div = document.getElementById('a');
8098: parent.document.body.appendChild(div);
8099: </script>
8100: <script>
8101: alert(document.URL);
8102: </script>
8103: </div>
8104: <script>
8105: alert(document.URL);
8106: </script></pre>
8107:
8108: <p>Up to the first "script" end tag, before the script is parsed,
8109: the result is relatively straightforward:</p>
8110:
1.306 mike 8111: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-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="">
8112: </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 8113: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8114:
1.159 mike 8115: <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 8116: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8117: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8118: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8119:
8120: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
8121: is inserted <em>into the outer <code>Document</code>
8122: object</em>.</p>
8123:
8124: <p>This also means that the <a href="browsers.html#script-s-global-object">script's global object</a> is
8125: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8126: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8127: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8128:
8129: <p class="note">This isn't a security problem since the script that
1.306 mike 8130: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code>Document</code> can
1.1 mike 8131: only do so because they have the two <code>Document</code> object
1.159 mike 8132: have the same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8133:
8134: <p>Thus, the first alert says "http://example.com/outer".</p>
8135:
1.306 mike 8136: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8137: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.1 mike 8138: <code><a href="semantics.html#script">script</a></code> element is in the inner <code>Document</code>:</p>
8139:
1.159 mike 8140: <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 8141:
8142:
8143:
1.215 mike 8144: <h3 id="namespaces"><span class="secno">9.3 </span>Namespaces</h3>
1.1 mike 8145:
8146: <p>The <dfn id="html-namespace-0">HTML namespace</dfn> is: <code>http://www.w3.org/1999/xhtml</code></p>
8147:
8148: <p>The <dfn id="mathml-namespace">MathML namespace</dfn> is: <code>http://www.w3.org/1998/Math/MathML</code></p>
8149:
8150: <p>The <dfn id="svg-namespace">SVG namespace</dfn> is: <code>http://www.w3.org/2000/svg</code></p>
8151:
8152: <p>The <dfn id="xlink-namespace">XLink namespace</dfn> is: <code>http://www.w3.org/1999/xlink</code></p>
8153:
8154: <p>The <dfn id="xml-namespace">XML namespace</dfn> is: <code>http://www.w3.org/XML/1998/namespace</code></p>
8155:
8156: <p>The <dfn id="xmlns-namespace">XMLNS namespace</dfn> is: <code>http://www.w3.org/2000/xmlns/</code></p>
8157:
8158: <hr><p>Data mining tools and other user agents that perform operations
1.83 mike 8159: on <code><a href="iana-considerations.html#text-html">text/html</a></code> content without running scripts,
1.1 mike 8160: evaluating CSS or XPath expressions, or otherwise exposing the
8161: resulting DOM to arbitrary content, may "support namespaces" by just
8162: asserting that their DOM node analogues are in certain namespaces,
8163: without actually exposing the above strings.</p>
8164:
8165:
8166:
8167:
8168: <h3 id="serializing-html-fragments"><span class="secno">9.4 </span>Serializing HTML fragments</h3>
8169:
8170: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8171: algorithm</dfn>. The algorithm takes as input a DOM
8172: <code>Element</code> or <code>Document</code>, referred to as <var title="">the node</var>, and either returns a string or raises an
8173: exception.</p>
8174:
8175: <p class="note">This algorithm serializes the <em>children</em> of
8176: the node being serialized, not the node itself.</p>
8177:
8178: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8179: the empty string.</p></li>
8180:
8181: <li>
8182:
8183: <p>For each child node of <var title="">the node</var>, in
8184: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8185:
8186: </p><ol><li><p>Let <var title="">current node</var> be the child node
8187: being processed.</p></li>
8188:
8189: <li>
8190:
8191: <p>Append the appropriate string from the following list to
8192: <var title="">s</var>:</p>
8193:
8194: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8195:
8196: <dd>
8197:
8198: <p>Append a U+003C LESS-THAN SIGN (<code title=""><</code>)
8199: character, followed by the element's tag name. (For nodes
8200: created by the <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
8201: lowercase.)</p>
8202:
8203: <p>For each attribute that the element has, append a U+0020
8204: SPACE character, the attribute's name (which, for attributes
8205: 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
8206: U+003D EQUALS SIGN (<code title="">=</code>) character, a
8207: U+0022 QUOTATION MARK (<code title="">"</code>)
8208: character, the attribute's value, <a href="#escapingString" title="escaping a
8209: string">escaped as described below</a> in <i>attribute
8210: mode</i>, and a second U+0022 QUOTATION MARK (<code title="">"</code>) character.</p>
8211:
8212: <p>While the exact order of attributes is UA-defined, and may
8213: depend on factors such as the order that the attributes were
8214: given in the original markup, the sort order must be stable,
8215: such that consecutive invocations of this algorithm serialize an
8216: element's attributes in the same order.</p>
8217:
8218: <p>Append a U+003E GREATER-THAN SIGN (<code title="">></code>)
8219: character.</p>
8220:
8221: <p>If <var title="">current node</var> is an
1.5 mike 8222: <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 8223: <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 8224: <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>,
8225: <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>,
8226: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>,
1.5 mike 8227: <code><a href="obsolete.html#spacer">spacer</a></code>, or <code>wbr</code> element, then
1.1 mike 8228: continue on to the next child node at this point.</p> <!--
8229: also, i guess: image and isindex, but we don't list those
8230: because we don't consider those "elements", more "macros", and
8231: thus we should never serialize them -->
8232:
8233: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8234: <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 8235: a U+000A LINE FEED (LF) character.</p>
8236:
8237: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8238: serialization algorithm</a> on the <var title="">current
8239: node</var> element (thus recursing into this algorithm for
8240: that element), followed by a U+003C LESS-THAN SIGN (<code title=""><</code>) character, a U+002F SOLIDUS (<code title="">/</code>) character, the element's tag name again,
8241: and finally a U+003E GREATER-THAN SIGN (<code title="">></code>) character.</p>
8242:
8243: </dd>
8244:
8245:
8246: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8247: node</dt>
8248:
8249: <dd>
8250:
1.19 mike 8251: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8252: <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 8253: <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 8254: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8255: if the parent of <var title="">current node</var> is
8256: <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
8257: node, then append the value of <var title="">current
8258: node</var>'s <code title="">data</code> IDL attribute
8259: literally.</p>
1.1 mike 8260:
8261: <p>Otherwise, append the value of <var title="">current
1.192 mike 8262: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8263: below</a>.</p>
8264:
8265: </dd>
8266:
8267:
8268: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8269:
8270: <dd>
8271:
8272: <p>Append the literal string <code><!--</code> (U+003C
8273: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8274: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8275: attribute, followed by the literal string <code>--></code>
8276: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8277: SIGN).</p>
8278:
8279: </dd>
8280:
8281:
8282: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8283:
8284: <dd>
8285:
8286: <p>Append the literal string <code><?</code> (U+003C
8287: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8288: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8289: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8290: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8291: character (>).</p>
1.1 mike 8292:
8293: </dd>
8294:
8295:
8296: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8297:
8298: <dd>
8299:
8300: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8301: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8302: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8303: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8304: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8305: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8306: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8307: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8308:
8309: </dd>
8310:
8311:
8312: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8313: occur as children of elements. If, despite this, they somehow do
8314: occur, this algorithm must raise an
8315: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8316:
8317: </li>
8318:
8319: </ol></li>
8320:
8321: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8322:
8323: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8324: purposes of the algorithm above) consists of replacing any
8325: occurrences of the "<code title="">&</code>" character by the
8326: string "<code title="">&amp;</code>", any occurrences of the
8327: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8328: 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
8329: 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>
8330:
8331: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8332: agent, and are therefore not covered in the algorithm above.</p>
8333:
8334: <p class="note">It is possible that the output of this algorithm, if
8335: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8336: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8337: element to which a <code title="">Comment</code> node has been
8338: appended is serialized and the output is then reparsed, the comment
8339: will end up being displayed in the text field. Similarly, if, as a
8340: result of DOM manipulation, an element contains a comment that
8341: contains the literal string "<code title="">--></code>", then
8342: when the result of serializing the element is parsed, the comment
8343: will be truncated at that point and the rest of the comment will be
8344: interpreted as markup. More examples would be making a
8345: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8346: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8347: 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
8348: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8349: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8350:
8351:
8352: <h3 id="parsing-html-fragments"><span class="secno">9.5 </span>Parsing HTML fragments</h3>
8353:
8354: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8355: algorithm</dfn>. The algorithm optionally takes as input an
8356: <code>Element</code> node, referred to as the <var title="">context</var> element, which gives the context for the
8357: parser, as well as <var title="">input</var>, a string to parse, and
8358: returns a list of zero or more nodes.</p>
8359:
8360: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8361: in the parser section are parts that only occur if the parser was
8362: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8363: with such markings for informational purposes only; such markings
8364: have no normative weight. If it is possible for a condition
8365: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8366: parser wasn't created for the purposes of handling this algorithm,
8367: then that is an error in the specification.</p>
8368:
8369: <ol><li>
8370:
8371: <p>Create a new <code>Document</code> node, and mark it as being
8372: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8373:
8374: </li>
8375:
8376: <li>
8377:
8378: <p>If there is a <var title="">context</var> element, and the
8379: <code>Document</code> of the <var title="">context</var> element
8380: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code>Document</code>
8381: 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
8382: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited quirks
8383: mode</a>, then let the <code>Document</code> be in
8384: <a href="dom.html#limited-quirks-mode">limited quirks mode</a>. Otherwise, leave the
8385: <code>Document</code> in <a href="dom.html#no-quirks-mode">no quirks mode</a>.</p>
8386:
8387: </li>
8388:
8389: <li>
8390:
8391: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
8392: the just created <code>Document</code> node.</p>
8393:
8394: </li>
8395:
8396: <li>
8397:
8398: <p>If there is a <var title="">context</var> element, run these
8399: substeps:</p>
8400:
8401: <ol><li>
8402:
1.541 mike 8403: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8404: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8405:
1.159 mike 8406: <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 8407: element</dt>
8408:
1.541 mike 8409: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8410:
8411:
8412: <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 8413: <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 8414: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8415:
1.541 mike 8416: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8417:
8418:
8419: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8420:
1.541 mike 8421: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8422: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8423: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8424:
8425:
1.42 mike 8426: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8427:
1.541 mike 8428: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8429: state</a>.</dd>
1.1 mike 8430:
8431:
8432: <dt>Otherwise</dt>
8433:
1.541 mike 8434: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8435:
8436: </dl></li>
8437:
8438: <li>
8439:
1.159 mike 8440: <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 8441: with no attributes.</p>
8442:
8443: </li>
8444:
8445: <li>
8446:
8447: <p>Append the element <var title="">root</var> to the
8448: <code>Document</code> node created above.</p>
8449:
8450: </li>
8451:
8452: <li>
8453:
8454: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8455: it contains just the single element <var title="">root</var>.</p>
8456:
8457: </li>
8458:
8459: <li>
8460:
8461: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8462: parser's insertion mode appropriately</a>.</p>
8463:
8464: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8465:
8466: </li>
8467:
8468: <li>
8469:
8470: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8471: to the nearest node to the <var title="">context</var> element
8472: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8473: ancestor chain, and including the element itself, if it is a
8474: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8475: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8476:
8477: </li>
8478:
8479: </ol></li>
8480:
8481: <li>
8482:
8483: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8484: parser</a> just created the <var title="">input</var>. The
8485: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8486: <i>irrelevant</i>.</p>
8487:
8488: </li>
8489:
8490: <li>
8491:
8492: <p>Start the parser and let it run until it has consumed all the
8493: characters just inserted into the input stream.</p>
8494:
8495: </li>
8496:
8497: <li>
8498:
8499: <p>If there is a <var title="">context</var> element, return the
8500: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8501: order</a>.</p>
8502:
8503: <p>Otherwise, return the children of the <code>Document</code>
8504: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8505:
8506: </li>
8507:
1.123 mike 8508: </ol></div></body></html>
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