Annotation of html5/spec/the-option-element.html, revision 1.183
1.88 mike 1: <!DOCTYPE html>
1.159 sruby 2: <html lang="en-US-x-Hixie"><head><title>4.10.12 The option element — HTML5</title><style type="text/css">
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1.1 mike 200:
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1.1 mike 286: }
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1.1 mike 291: }
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1.1 mike 302: }
303:
1.159 sruby 304: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script>
1.1 mike 305: function getCookie(name) {
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1.159 sruby 322: </script><link href="the-optgroup-element.html" title="4.10.11 The optgroup element" rel="prev">
1.161 sruby 323: <link href="spec.html#contents" title="Table of contents" rel="contents">
1.1 mike 324: <link href="the-textarea-element.html" title="4.10.13 The textarea element" rel="next">
1.22 mike 325: </head><body onload="fixBrokenLink();" class="split chapter"><div class="head" id="head">
1.1 mike 326: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
327:
328: <h1>HTML5</h1>
1.159 sruby 329: <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>
1.183 ! sruby 330: <h2 class="no-num no-toc" id="editor's-draft-date-1-january-1970">Editor's Draft 24 September 2012</h2>
1.85 mike 331: </div>
1.174 sruby 332: <div class="prev_next">
1.1 mike 333: <a href="the-optgroup-element.html">← 4.10.11 The optgroup element</a> –
1.161 sruby 334: <a href="spec.html#contents">Table of contents</a> –
1.1 mike 335: <a href="the-textarea-element.html">4.10.13 The textarea element →</a>
1.159 sruby 336: </div>
1.1 mike 337:
1.85 mike 338: <h4 id="the-option-element"><span class="secno">4.10.12 </span>The <dfn><code>option</code></dfn> element</h4>
339:
340: <dl class="element"><dt><a href="element-definitions.html#element-dfn-categories" title="element-dfn-categories">Categories</a>:</dt>
1.1 mike 341: <dd>None.</dd>
1.25 mike 342: <dt><a href="element-definitions.html#element-dfn-contexts" title="element-dfn-contexts">Contexts in which this element can be used</a>:</dt>
1.1 mike 343: <dd>As a child of a <code><a href="the-select-element.html#the-select-element">select</a></code> element.</dd>
344: <dd>As a child of a <code><a href="the-datalist-element.html#the-datalist-element">datalist</a></code> element.</dd>
345: <dd>As a child of an <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element.</dd>
1.25 mike 346: <dt><a href="element-definitions.html#element-dfn-content-model" title="element-dfn-content-model">Content model</a>:</dt>
1.1 mike 347: <dd><a href="content-models.html#text-content" title="text content">Text</a>.</dd>
1.25 mike 348: <dt><a href="element-definitions.html#element-dfn-attributes" title="element-dfn-attributes">Content attributes</a>:</dt>
1.1 mike 349: <dd><a href="global-attributes.html#global-attributes">Global attributes</a></dd>
350: <dd><code title="attr-option-disabled"><a href="#attr-option-disabled">disabled</a></code></dd>
351: <dd><code title="attr-option-label"><a href="#attr-option-label">label</a></code></dd>
352: <dd><code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code></dd>
353: <dd><code title="attr-option-value"><a href="#attr-option-value">value</a></code></dd>
1.159 sruby 354: <dt><a href="element-definitions.html#element-dfn-dom" title="element-dfn-dom">DOM interface</a>:</dt><!--TOPIC:DOM APIs-->
1.1 mike 355: <dd>
356: <pre class="idl">[NamedConstructor=<a href="#dom-option" title="dom-option">Option</a>(),
357: NamedConstructor=<a href="#dom-option-t" title="dom-option-t">Option</a>(DOMString text),
358: NamedConstructor=<a href="#dom-option-tv" title="dom-option-tv">Option</a>(DOMString text, DOMString value),
359: NamedConstructor=<a href="#dom-option-tvd" title="dom-option-tvd">Option</a>(DOMString text, DOMString value, boolean defaultSelected),
360: NamedConstructor=<a href="#dom-option-tvds" title="dom-option-tvds">Option</a>(DOMString text, DOMString value, boolean defaultSelected, boolean selected)]
361: interface <dfn id="htmloptionelement">HTMLOptionElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
362: attribute boolean <a href="#dom-option-disabled" title="dom-option-disabled">disabled</a>;
363: readonly attribute <a href="the-form-element.html#htmlformelement">HTMLFormElement</a>? <a href="#dom-option-form" title="dom-option-form">form</a>;
364: attribute DOMString <a href="#dom-option-label" title="dom-option-label">label</a>;
365: attribute boolean <a href="#dom-option-defaultselected" title="dom-option-defaultSelected">defaultSelected</a>;
366: attribute boolean <a href="#dom-option-selected" title="dom-option-selected">selected</a>;
367: attribute DOMString <a href="#dom-option-value" title="dom-option-value">value</a>;
368:
369: attribute DOMString <a href="#dom-option-text" title="dom-option-text">text</a>;
370: readonly attribute long <a href="#dom-option-index" title="dom-option-index">index</a>;
371: };</pre>
372: </dd>
1.159 sruby 373: </dl><!--TOPIC:HTML--><p>The <code><a href="#the-option-element">option</a></code> element <a href="rendering.html#represents">represents</a> an option
1.1 mike 374: in a <code><a href="the-select-element.html#the-select-element">select</a></code> element or as part of a list of suggestions
1.85 mike 375: in a <code><a href="the-datalist-element.html#the-datalist-element">datalist</a></code> element.</p>
376:
377: <p>In certain circumstances described in the definition of the
1.1 mike 378: <code><a href="the-select-element.html#the-select-element">select</a></code> element, an <code><a href="#the-option-element">option</a></code> element can be a
379: <code><a href="the-select-element.html#the-select-element">select</a></code> element's <a href="the-select-element.html#placeholder-label-option">placeholder label option</a>.
380: A <a href="the-select-element.html#placeholder-label-option">placeholder label option</a> does not represent an actual
381: option, but instead represents a label for the <code><a href="the-select-element.html#the-select-element">select</a></code>
1.85 mike 382: control.</p>
383:
384: <p>The <dfn id="attr-option-disabled" title="attr-option-disabled"><code>disabled</code></dfn>
1.1 mike 385: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. An
386: <code><a href="#the-option-element">option</a></code> element is <dfn id="concept-option-disabled" title="concept-option-disabled">disabled</dfn> if its <code title="attr-option-disabled"><a href="#attr-option-disabled">disabled</a></code> attribute is present or
387: if it is a child of an <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element whose <code title="attr-optgroup-disabled"><a href="the-optgroup-element.html#attr-optgroup-disabled">disabled</a></code> attribute is
1.85 mike 388: present.</p>
389:
390: <div class="impl">
1.1 mike 391:
392: <p>An <code><a href="#the-option-element">option</a></code> element that is <a href="#attr-option-disabled" title="attr-option-disabled">disabled</a> must prevent any <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> events that are <a href="webappapis.html#queue-a-task" title="queue
393: a task">queued</a> on the <a href="webappapis.html#user-interaction-task-source">user interaction task
394: source</a> from being dispatched on the element.</p>
395:
1.85 mike 396: </div>
397:
398: <p>The <dfn id="attr-option-label" title="attr-option-label"><code>label</code></dfn>
1.1 mike 399: attribute provides a label for element. The <dfn id="concept-option-label" title="concept-option-label">label</dfn> of an <code><a href="#the-option-element">option</a></code>
400: element is the value of the <code title="attr-option-label"><a href="#attr-option-label">label</a></code> content attribute, if there
1.85 mike 401: is one, or, if there is not, the value of the element's <code title="dom-option-text"><a href="#dom-option-text">text</a></code> IDL attribute.</p>
402:
403: <p>The <dfn id="attr-option-value" title="attr-option-value"><code>value</code></dfn>
1.1 mike 404: attribute provides a value for element. The <dfn id="concept-option-value" title="concept-option-value">value</dfn> of an <code><a href="#the-option-element">option</a></code>
405: element is the value of the <code title="attr-option-value"><a href="#attr-option-value">value</a></code> content attribute, if there
1.85 mike 406: is one, or, if there is not, the value of the element's <code title="dom-option-text"><a href="#dom-option-text">text</a></code> IDL attribute.</p>
407:
408: <p>The <dfn id="attr-option-selected" title="attr-option-selected"><code>selected</code></dfn>
1.1 mike 409: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. It represents the
410: default <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the
1.85 mike 411: element.</p>
412:
413: <div class="impl">
1.1 mike 414:
415: <p>The <dfn id="concept-option-selectedness" title="concept-option-selectedness">selectedness</dfn>
416: of an <code><a href="#the-option-element">option</a></code> element is a boolean state, initially
417: false. Except where otherwise
418: specified, when the element is created, its <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> must be set
419: to true if the element has a <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute. Whenever an
420: <code><a href="#the-option-element">option</a></code> element's <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute is added, its
421: <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> must
422: be set to true.</p>
423:
424: <p class="note">The <code title="dom-option-tvd"><a href="#dom-option-tvd">Option()</a></code>
425: constructor with three or fewer arguments overrides the initial
426: state of the <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> state to
427: always be false even if the third argument is true (implying that a
428: <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute is to
429: be set). The fourth argument can be used to explicitly set the
430: initial <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> state when
431: using the constructor.</p>
432:
1.159 sruby 433: <!-- http://software.hixie.ch/utilities/js/live-dom-viewer/saved/604 -->
1.1 mike 434:
1.85 mike 435: </div>
436:
437: <p>A <code><a href="the-select-element.html#the-select-element">select</a></code> element whose <code title="attr-select-multiple"><a href="the-select-element.html#attr-select-multiple">multiple</a></code> attribute is not
1.1 mike 438: specified must not have more than one descendant <code><a href="#the-option-element">option</a></code>
439: element with its <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code>
1.85 mike 440: attribute set.</p>
441:
442: <div class="impl">
1.1 mike 443:
444: <p>An <code><a href="#the-option-element">option</a></code> element's <dfn id="concept-option-index" title="concept-option-index">index</dfn> is the number of
445: <code><a href="#the-option-element">option</a></code> element that are in the same <a href="the-select-element.html#concept-select-option-list" title="concept-select-option-list">list of options</a> but that
446: come before it in <a href="infrastructure.html#tree-order">tree order</a>. If the
447: <code><a href="#the-option-element">option</a></code> element is not in a <a href="the-select-element.html#concept-select-option-list" title="concept-select-option-list">list of options</a>, then the
448: <code><a href="#the-option-element">option</a></code> element's <a href="#concept-option-index" title="concept-option-index">index</a> is zero.</p>
449:
1.85 mike 450: </div>
451:
1.159 sruby 452: <!--TOPIC:DOM APIs-->
1.85 mike 453: <dl class="domintro"><dt><var title="">option</var> . <code title="dom-option-selected"><a href="#dom-option-selected">selected</a></code></dt>
1.1 mike 454:
455: <dd>
456:
457: <p>Returns true if the element is selected, and false otherwise.</p>
458:
459: <p>Can be set, to override the current state of the element.</p>
460:
461: </dd>
462:
463: <dt><var title="">option</var> . <code title="dom-option-index"><a href="#dom-option-index">index</a></code></dt>
464:
465: <dd>
466:
467: <p>Returns the index of the element in its <code><a href="the-select-element.html#the-select-element">select</a></code>
468: element's <code title="dom-select-options"><a href="the-select-element.html#dom-select-options">options</a></code>
469: list.</p>
470:
471: </dd>
472:
473: <dt><var title="">option</var> . <code title="dom-option-form"><a href="#dom-option-form">form</a></code></dt>
474:
475: <dd>
476:
477: <p>Returns the element's <code><a href="the-form-element.html#the-form-element">form</a></code> element, if any, or
478: null otherwise.</p>
479:
480: </dd>
481:
482: <dt><var title="">option</var> . <code title="dom-option-text"><a href="#dom-option-text">text</a></code></dt>
483:
484: <dd>
485:
486: <p>Same as <code><a href="infrastructure.html#textcontent">textContent</a></code>, except that spaces are collapsed.</p>
487:
488: </dd>
489:
490: <dt><var title="">option</var> = new <code title="dom-option"><a href="#dom-option">Option</a></code>( [ <var title="">text</var> [, <var title="">value</var> [, <var title="">defaultSelected</var> [, <var title="">selected</var> ] ] ] ] )</dt>
491:
492: <dd>
493:
494: <p>Returns a new <code><a href="#the-option-element">option</a></code> element.</p>
495:
496: <p>The <var title="">text</var> argument sets the contents of the element.</p>
497: <p>The <var title="">value</var> argument sets the <code title="attr-option-value"><a href="#attr-option-value">value</a></code> attribute.</p>
498: <p>The <var title="">defaultSelected</var> argument sets the <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute.</p>
499: <p>The <var title="">selected</var> argument sets whether or not the element is selected. If it is omitted, even if the <var title="">defaultSelected</var> argument is true, the element is not selected.</p>
500:
501: </dd>
502:
503: </dl><div class="impl">
504:
505: <p>The <dfn id="dom-option-disabled" title="dom-option-disabled"><code>disabled</code></dfn>
506: IDL attribute must <a href="common-dom-interfaces.html#reflect">reflect</a> the content attribute of the
507: same name. The <dfn id="dom-option-defaultselected" title="dom-option-defaultSelected"><code>defaultSelected</code></dfn>
508: IDL attribute must <a href="common-dom-interfaces.html#reflect">reflect</a> the <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> content attribute.</p>
509:
510: <p>The <dfn id="dom-option-label" title="dom-option-label"><code>label</code></dfn> IDL
1.59 mike 511: attribute, on getting, must return the element's <a href="#concept-option-label" title="concept-option-label">label</a>. On setting, the element's
512: <code title="attr-option-label"><a href="#attr-option-label">label</a></code> content attribute must
513: be set to the new value.</p>
1.1 mike 514:
515: <p>The <dfn id="dom-option-value" title="dom-option-value"><code>value</code></dfn> IDL
1.59 mike 516: attribute, on getting, must return the element's <a href="#concept-option-value" title="concept-option-value">value</a>. On setting, the element's
517: <code title="attr-option-value"><a href="#attr-option-value">value</a></code> content attribute must
518: be set to the new value.</p>
1.1 mike 519:
520: <p>The <dfn id="dom-option-selected" title="dom-option-selected"><code>selected</code></dfn>
521: IDL attribute, on getting, must return true if the element's <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> is true, and
522: false otherwise. On setting, it must set the element's <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> to the new
523: value.</p>
524:
525: <p>The <dfn id="dom-option-index" title="dom-option-index"><code>index</code></dfn> IDL
526: attribute must return the element's <a href="#concept-option-index" title="concept-option-index">index</a>.</p>
527:
528: <p>The <dfn id="dom-option-text" title="dom-option-text"><code>text</code></dfn> IDL
529: attribute, on getting, must return the value of the
530: <code><a href="infrastructure.html#textcontent">textContent</a></code> IDL attribute on the element, with <a href="common-microsyntaxes.html#strip-leading-and-trailing-whitespace" title="strip leading and trailing whitespace">leading and trailing
531: whitespace stripped</a>, and with any sequences of two or more
532: <a href="common-microsyntaxes.html#space-character" title="space character">space characters</a> replaced by a
533: single U+0020 SPACE character. On setting, it must act as if the
534: <code><a href="infrastructure.html#textcontent">textContent</a></code> IDL attribute on the element had been set
535: to the new value.</p>
536:
537: <p>The <dfn id="dom-option-form" title="dom-option-form"><code>form</code></dfn> IDL
538: attribute's behavior depends on whether the <code><a href="#the-option-element">option</a></code>
539: element is in a <code><a href="the-select-element.html#the-select-element">select</a></code> element or not. If the
540: <code><a href="#the-option-element">option</a></code> has a <code><a href="the-select-element.html#the-select-element">select</a></code> element as its parent,
541: or has an <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element as its parent and that
542: <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element has a <code><a href="the-select-element.html#the-select-element">select</a></code> element as
543: its parent, then the <code title="dom-option-form"><a href="#dom-option-form">form</a></code> IDL
544: attribute must return the same value as the <code title="dom-fae-form"><a href="association-of-controls-and-forms.html#dom-fae-form">form</a></code> IDL attribute on that
545: <code><a href="the-select-element.html#the-select-element">select</a></code> element. Otherwise, it must return null.</p>
546:
547: <p>Several constructors are provided for creating
548: <code><a href="#htmloptionelement">HTMLOptionElement</a></code> objects (in addition to the factory
549: methods from DOM Core such as <code title="">createElement()</code>): <dfn id="dom-option" title="dom-option"><code>Option()</code></dfn>, <dfn id="dom-option-t" title="dom-option-t"><code>Option(<var title="">text</var>)</code></dfn>, <dfn id="dom-option-tv" title="dom-option-tv"><code>Option(<var title="">text</var>, <var title="">value</var>)</code></dfn>, <dfn id="dom-option-tvd" title="dom-option-tvd"><code>Option(<var title="">text</var>, <var title="">value</var>, <var title="">defaultSelected</var>)</code></dfn>, and <dfn id="dom-option-tvds" title="dom-option-tvds"><code>Option(<var title="">text</var>, <var title="">value</var>, <var title="">defaultSelected</var>, <var title="">selected</var>)</code></dfn>. When invoked as constructors,
550: these must return a new <code><a href="#htmloptionelement">HTMLOptionElement</a></code> object (a new
551: <code><a href="#the-option-element">option</a></code> element). If the <var title="">text</var>
552: argument is present, the new object must have as its only child a
1.159 sruby 553: <code><a href="infrastructure.html#text-0">Text</a></code> node whose data is the value of that argument. If
1.46 mike 554: the <var title="">value</var> argument is present, the new object
555: must have a <code title="attr-option-value"><a href="#attr-option-value">value</a></code> attribute
556: set with the value of the argument as its value. If the <var title="">defaultSelected</var> argument is present and true, the new
1.1 mike 557: object must have a <code title="attr-option-selected"><a href="#attr-option-selected">selected</a></code> attribute set with no
558: value. If the <var title="">selected</var> argument is present and
559: true, the new object must have its <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true;
560: otherwise the fourth argument is absent or false, and the <a href="#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> must be set
561: to false, even if the <var title="">defaultSelected</var> argument
562: is present and true. The element's document must be the <a href="browsers.html#active-document">active
563: document</a> of the <a href="browsers.html#browsing-context">browsing context</a> of the
564: <code><a href="browsers.html#window">Window</a></code> object on which the interface object of the
565: invoked constructor is found.</p>
566:
1.85 mike 567: </div>
1.159 sruby 568: <!--TOPIC:HTML-->
1.85 mike 569:
570:
571:
572: </body></html>
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