Annotation of html5/spec/the-select-element.html, revision 1.205
1.204 sruby 1: <!DOCTYPE html><html lang="en-US-x-Hixie"><meta charset="utf-8"><title>4.10.9 The select element — HTML5</title><style type="text/css">
1.200 sruby 2:
3: .applies thead th > * { display: block; }
4: .applies thead code { display: block; }
5: .applies tbody th { white-space: nowrap; }
6: .applies td { text-align: center; }
7: .applies .yes { background: yellow; }
8:
9: .matrix, .matrix td { border: hidden; text-align: right; }
10: .matrix { margin-left: 2em; }
11:
12: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
13: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
14: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
15:
16: td.eg { border-width: thin; text-align: center; }
17:
18: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
19: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
20: #table-example-1 caption { padding-bottom: 0.5em; }
21: #table-example-1 thead, #table-example-1 tbody { border: none; }
22: #table-example-1 th, #table-example-1 td { border: solid thin; }
23: #table-example-1 th { font-weight: normal; }
24: #table-example-1 td { border-style: none solid; vertical-align: top; }
25: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
26: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
27: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
28: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
29: #table-example-1 tbody td:first-child::after { content: leader(". "); }
30: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
31: #table-example-1 tbody td:first-child + td { width: 10em; }
32: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
33: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
34:
35: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
36: .apple-table-examples * { font-family: "Times", serif; }
37: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
38: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
39: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
40: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
41: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
42: .apple-table-examples td { text-align: right; vertical-align: top; }
43: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
44: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
45: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
46: .apple-table-examples sup { line-height: 0; }
47:
48: .details-example img { vertical-align: top; }
49:
50: #base64-table {
51: white-space: nowrap;
52: font-size: 0.6em;
53: column-width: 6em;
54: column-count: 5;
55: column-gap: 1em;
56: -moz-column-width: 6em;
57: -moz-column-count: 5;
58: -moz-column-gap: 1em;
59: -webkit-column-width: 6em;
60: -webkit-column-count: 5;
61: -webkit-column-gap: 1em;
62: }
63: #base64-table thead { display: none; }
64: #base64-table * { border: none; }
65: #base64-table tbody td:first-child:after { content: ':'; }
66: #base64-table tbody td:last-child { text-align: right; }
67:
68: #named-character-references-table {
69: white-space: nowrap;
70: font-size: 0.6em;
71: column-width: 30em;
72: column-gap: 1em;
73: -moz-column-width: 30em;
74: -moz-column-gap: 1em;
75: -webkit-column-width: 30em;
76: -webkit-column-gap: 1em;
77: }
78: #named-character-references-table > table > tbody > tr > td:first-child + td,
79: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
80: #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; }
81: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
82:
83: .glyph.control { color: red; }
84:
85: @font-face {
86: font-family: 'Essays1743';
87: src: url('../fonts/Essays1743.ttf');
88: }
89: @font-face {
90: font-family: 'Essays1743';
91: font-weight: bold;
92: src: url('../fonts/Essays1743-Bold.ttf');
93: }
94: @font-face {
95: font-family: 'Essays1743';
96: font-style: italic;
97: src: url('../fonts/Essays1743-Italic.ttf');
98: }
99: @font-face {
100: font-family: 'Essays1743';
101: font-style: italic;
102: font-weight: bold;
103: src: url('../fonts/Essays1743-BoldItalic.ttf');
104: }
105:
1.204 sruby 106: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20{%20display:%20none;%20}%0Ahtml%20{%20border:%20solid%20yellow;%20}%20.domintro:before%20{%20display:%20none;%20}" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20{%20background:%20%23FFEEEE;%20}%20.domintro:before%20{%20background:%20%23FFEEEE;%20}" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><style type="text/css">
1.1 mike 107: pre { margin-left: 2em; white-space: pre-wrap; }
108: h2 { margin: 3em 0 1em 0; }
109: h3 { margin: 2.5em 0 1em 0; }
110: h4 { margin: 2.5em 0 0.75em 0; }
111: h5, h6 { margin: 2.5em 0 1em; }
112: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
113: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
114: p { margin: 1em 0; }
115: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
116: dl, dd { margin-top: 0; margin-bottom: 0; }
117: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
118: dt + dt { margin-top: 0; }
119: dd dt { margin-top: 0.25em; margin-bottom: 0; }
120: dd p { margin-top: 0; }
121: dd dl + p { margin-top: 1em; }
122: dd table + p { margin-top: 1em; }
123: p + * > li, dd li { margin: 1em 0; }
124: dt, dfn { font-weight: bold; font-style: normal; }
125: i, em { font-style: italic; }
126: dt dfn { font-style: italic; }
127: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
128: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
129: pre em { font-weight: bolder; font-style: normal; }
130: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
131: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
132: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
133: table thead, table tbody { border-bottom: solid; }
134: table tbody th:first-child { border-left: solid; }
135: table tbody th { text-align: left; }
136: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
137: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
138:
139: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
140: .matrix, .matrix td { border: none; text-align: right; }
141: .matrix { margin-left: 2em; }
142: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
143: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
144: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
145:
146: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
147: img.extra, p.overview { float: right; }
148: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; position: relative; }
149: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
150: pre.idl::before { content: "IDL"; font: bold small sans-serif; padding: 0.5em; background: white; position: absolute; top: 0; margin: -1px 0 0 -4em; width: 1.5em; border: thin solid; border-radius: 0 0 0 0.5em }
151: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
152: pre.css:first-line { color: #AAAA50; }
153: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
154: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
155: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
156: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
157: dl.domintro dd p { margin: 0.5em 0; }
158: dl.domintro:before { display: table; margin: -1em -0.5em -0.5em auto; width: auto; content: 'This box is non-normative. Implementation requirements are given below this box.'; color: black; font-style: italic; border: solid 2px; background: white; padding: 0 0.25em; }
159: dl.switch { padding-left: 2em; }
160: dl.switch > dt { text-indent: -1.5em; }
161: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
162: dl.triple { padding: 0 0 0 1em; }
163: dl.triple dt, dl.triple dd { margin: 0; display: inline }
164: dl.triple dt:after { content: ':'; }
165: dl.triple dd:after { content: '\A'; white-space: pre; }
166: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
167: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
168: a .diff-new { border-bottom: 1px blue solid; }
169:
1.180 sruby 170: figure.diagrams { border: double black; background: white; padding: 1em; }
171: figure.diagrams img { display: block; margin: 1em auto; }
172:
1.1 mike 173: h2 { page-break-before: always; }
174: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
175: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
176:
177: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
1.200 sruby 178: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]) { border-bottom: solid #9999CC; }
1.1 mike 179:
180: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
181: div.head p { margin: 0; }
182: div.head h1 { margin: 0; }
183: div.head .logo { float: right; margin: 0 1em; }
184: div.head .logo img { border: none } /* remove border from top image */
185: div.head dl { margin: 1em 0; }
186: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
187:
188: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
189: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
190: body > .toc > li > * { margin-bottom: 0.5em; }
191: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
192: .toc, .toc li { list-style: none; }
193:
194: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
195: .brief li { margin: 0; padding: 0; }
196: .brief li p { margin: 0; padding: 0; }
197:
198: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
199: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
200: .category-list li { display: inline; }
201: .category-list li:not(:last-child)::after { content: ', '; }
202: .category-list li > span, .category-list li > a { text-transform: lowercase; }
203: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
204:
205: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
206: .XXX > :first-child { margin-top: 0; }
207: p .XXX { line-height: 3em; }
208: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
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210: .annotation :link, .annotation :visited { color: inherit; }
211: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
212: .annotation span { border: none ! important; }
213: .note { color: green; background: transparent; font-family: sans-serif; }
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217: p.note, div.note { padding: 0.5em 2em; }
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221: .warning:before { font-style: normal; }
222: p.note:before { content: 'Note: '; }
223: p.warning:before { content: '\26A0 Warning! '; }
224:
225: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
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227: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
228: .bookkeeping dt { margin: 0.5em 2em 0; }
229: .bookkeeping dd { margin: 0 3em 0.5em; }
230:
231: h4 { position: relative; z-index: 3; }
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233: .element {
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239: position: relative;
240: z-index: 1;
241: }
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243: position: absolute;
244: z-index: 2;
245: top: 0;
246: left: -1.15em;
247: height: 2em;
248: width: 0.9em;
249: background: #EEEEFF;
250: content: ' ';
251: border-style: none none solid solid;
252: border-color: #9999FF;
253: border-width: 0.25em;
254: }
255:
256: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
257: td > .example:only-child { margin: 0 0 0 0.1em; }
258:
259: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
260: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
261: ul.domTree li li { list-style: none; }
262: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
263: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
264: ul.domTree span { font-style: italic; font-family: serif; }
265: ul.domTree .t1 code { color: purple; font-weight: bold; }
266: ul.domTree .t2 { font-style: normal; font-family: monospace; }
267: ul.domTree .t2 .name { color: black; font-weight: bold; }
268: ul.domTree .t2 .value { color: blue; font-weight: normal; }
269: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
270: ul.domTree .t7 code, .domTree .t8 code { color: green; }
271: ul.domTree .t10 code { color: teal; }
272:
273: body.dfnEnabled dfn { cursor: pointer; }
274: .dfnPanel {
275: display: inline;
276: position: absolute;
277: z-index: 10;
278: height: auto;
279: width: auto;
280: padding: 0.5em 0.75em;
281: font: small sans-serif, Droid Sans Fallback;
282: background: #DDDDDD;
283: color: black;
284: border: outset 0.2em;
285: }
286: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
287: .dfnPanel :link, .dfnPanel :visited { color: black; }
288: .dfnPanel p { font-weight: bolder; }
289: .dfnPanel * + p { margin-top: 0.25em; }
290: .dfnPanel li { list-style-position: inside; }
291:
292: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
293: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
294: #configUI p label { display: block; }
295: #configUI #updateUI, #configUI .loginUI { text-align: center; }
296: #configUI input[type=button] { display: block; margin: auto; }
297:
298: fieldset { margin: 1em; padding: 0.5em 1em; }
299: fieldset > legend + * { margin-top: 0; }
300: fieldset > :last-child { margin-bottom: 0; }
301: fieldset p { margin: 0.5em 0; }
302:
1.204 sruby 303: .stability {
304: position: fixed;
305: bottom: 0;
306: left: 0; right: 0;
307: margin: 0 auto 0 auto;
308: width: 50%;
309: background: maroon; color: yellow;
310: -webkit-border-radius: 1em 1em 0 0;
311: -moz-border-radius: 1em 1em 0 0;
312: border-radius: 1em 1em 0 0;
313: -moz-box-shadow: 0 0 1em #500;
314: -webkit-box-shadow: 0 0 1em #500;
315: box-shadow: 0 0 1em red;
316: padding: 0.5em 1em;
317: text-align: center;
318: }
319: .stability strong {
320: display: block;
321: }
322: .stability input {
323: -moz-appearance: none; -webkit-appearance: none; margin: 0;
324: border: 0; padding: 0.25em 0.5em; background: transparent; color: black;
325: position: absolute; top: -0.5em; right: 0; font: 1.25em sans-serif; text-align: center;
326: }
327: .stability input:hover {
328: color: white;
329: text-shadow: 0 0 2px black;
330: }
331: .stability input:active {
332: padding: 0.3em 0.45em 0.2em 0.55em;
333: }
334: .stability :link, .stability :visited,
335: .stability :link:hover, .stability :visited:hover {
336: background: transparent;
337: color: white;
338: }
339:
340: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet" type="text/css"><meta content="noindex" name="robots"><script>
1.1 mike 341: function getCookie(name) {
342: var params = location.search.substr(1).split("&");
343: for (var index = 0; index < params.length; index++) {
344: if (params[index] == name)
345: return "1";
346: var data = params[index].split("=");
347: if (data[0] == name)
348: return unescape(data[1]);
349: }
350: var cookies = document.cookie.split("; ");
351: for (var index = 0; index < cookies.length; index++) {
352: var data = cookies[index].split("=");
353: if (data[0] == name)
354: return unescape(data[1]);
355: }
356: return null;
357: }
1.204 sruby 358: </script><link href="the-button-element.html" rel="prev" title="4.10.8 The button element">
359: <link href="index.html#contents" rel="contents" title="Table of contents">
360: <link href="the-datalist-element.html" rel="next" title="4.10.10 The datalist element">
361: <body class="split chapter" onload="fixBrokenLink();"><div class="head" id="head">
1.1 mike 362: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
363:
364: <h1>HTML5</h1>
1.197 sruby 365: <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>
1.204 sruby 366: <h2 class="no-num no-toc" id="w3c-working-draft-11-october-2012">W3C Working Draft 11 October 2012</h2>
1.85 mike 367: </div>
1.200 sruby 368:
369:
1.204 sruby 370: <nav class="prev_next">
371: <a href="the-button-element.html">← 4.10.8 The button element</a> –
372: <a href="index.html#contents">Table of contents</a> –
373: <a href="the-datalist-element.html">4.10.10 The datalist element →</a>
374: </nav>
1.1 mike 375:
1.85 mike 376: <h4 id="the-select-element"><span class="secno">4.10.9 </span>The <dfn><code>select</code></dfn> element</h4>
377:
378: <dl class="element"><dt><a href="element-definitions.html#element-dfn-categories" title="element-dfn-categories">Categories</a>:</dt>
1.159 sruby 379: <dd><a href="content-models.html#flow-content-1">Flow content</a>.</dd>
380: <dd><a href="content-models.html#phrasing-content-1">Phrasing content</a>.</dd>
381: <dd><a href="content-models.html#interactive-content-0">Interactive content</a>.</dd>
1.1 mike 382: <dd><a href="forms.html#category-listed" title="category-listed">Listed</a>, <a href="forms.html#category-label" title="category-label">labelable</a>, <a href="forms.html#category-submit" title="category-submit">submittable</a>, and <a href="forms.html#category-reset" title="category-reset">resettable</a> <a href="forms.html#form-associated-element">form-associated element</a>.</dd>
1.159 sruby 383: <dd><a href="content-models.html#palpable-content-0">Palpable content</a>.</dd>
1.25 mike 384: <dt><a href="element-definitions.html#element-dfn-contexts" title="element-dfn-contexts">Contexts in which this element can be used</a>:</dt>
1.159 sruby 385: <dd>Where <a href="content-models.html#phrasing-content-1">phrasing content</a> is expected.</dd>
1.25 mike 386: <dt><a href="element-definitions.html#element-dfn-content-model" title="element-dfn-content-model">Content model</a>:</dt>
1.1 mike 387: <dd>Zero or more <code><a href="the-option-element.html#the-option-element">option</a></code> or <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> elements.</dd>
1.25 mike 388: <dt><a href="element-definitions.html#element-dfn-attributes" title="element-dfn-attributes">Content attributes</a>:</dt>
1.1 mike 389: <dd><a href="global-attributes.html#global-attributes">Global attributes</a></dd>
390: <dd><code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus">autofocus</a></code></dd>
391: <dd><code title="attr-fe-disabled"><a href="attributes-common-to-form-controls.html#attr-fe-disabled">disabled</a></code></dd>
392: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
393: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code></dd>
394: <dd><code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name">name</a></code></dd>
395: <dd><code title="attr-select-required"><a href="#attr-select-required">required</a></code></dd>
396: <dd><code title="attr-select-size"><a href="#attr-select-size">size</a></code></dd>
1.159 sruby 397: <dt><a href="element-definitions.html#element-dfn-dom" title="element-dfn-dom">DOM interface</a>:</dt><!--TOPIC:DOM APIs-->
1.1 mike 398: <dd>
399: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
400: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
401: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
402: readonly attribute <a href="the-form-element.html#htmlformelement">HTMLFormElement</a>? <a href="association-of-controls-and-forms.html#dom-fae-form" title="dom-fae-form">form</a>;
403: attribute boolean <a href="#dom-select-multiple" title="dom-select-multiple">multiple</a>;
404: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fe-name" title="dom-fe-name">name</a>;
405: attribute boolean <a href="#dom-select-required" title="dom-select-required">required</a>;
406: attribute unsigned long <a href="#dom-select-size" title="dom-select-size">size</a>;
407:
408: readonly attribute DOMString <a href="#dom-select-type" title="dom-select-type">type</a>;
409:
1.159 sruby 410: readonly attribute <a href="common-dom-interfaces.html#htmloptionscollection-0">HTMLOptionsCollection</a> <a href="#dom-select-options" title="dom-select-options">options</a>;
1.1 mike 411: attribute unsigned long <a href="#dom-select-length" title="dom-select-length">length</a>;
412: getter <a href="infrastructure.html#element">Element</a> <a href="#dom-select-item" title="dom-select-item">item</a>(unsigned long index);
413: object <a href="#dom-select-nameditem" title="dom-select-namedItem">namedItem</a>(DOMString name);
1.74 mike 414: void <a href="#dom-select-add" title="dom-select-add">add</a>((<a href="the-option-element.html#htmloptionelement">HTMLOptionElement</a> or <a href="the-optgroup-element.html#htmloptgroupelement">HTMLOptGroupElement</a>) element, optional (<a href="elements.html#htmlelement">HTMLElement</a> or long)? before = null);
1.1 mike 415: void <a href="#dom-select-remove" title="dom-select-remove">remove</a>(long index);
1.183 sruby 416: <a href="common-dom-interfaces.html#dom-htmloptionscollection-setter" title="dom-HTMLOptionsCollection-setter">setter creator</a> void (unsigned long index, <a href="the-option-element.html#htmloptionelement">HTMLOptionElement</a>? option);
1.1 mike 417:
418: readonly attribute <a href="infrastructure.html#htmlcollection">HTMLCollection</a> <a href="#dom-select-selectedoptions" title="dom-select-selectedOptions">selectedOptions</a>;
419: attribute long <a href="#dom-select-selectedindex" title="dom-select-selectedIndex">selectedIndex</a>;
420: attribute DOMString <a href="#dom-select-value" title="dom-select-value">value</a>;
421:
1.205 ! sruby 422: readonly attribute boolean <a href="constraints.html#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
! 423: readonly attribute <a href="constraints.html#validitystate">ValidityState</a> <a href="constraints.html#dom-cva-validity" title="dom-cva-validity">validity</a>;
! 424: readonly attribute DOMString <a href="constraints.html#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
! 425: boolean <a href="constraints.html#dom-cva-checkvalidity" title="dom-cva-checkValidity">checkValidity</a>();
! 426: void <a href="constraints.html#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(DOMString error);
1.1 mike 427:
428: readonly attribute <a href="infrastructure.html#nodelist">NodeList</a> <a href="the-label-element.html#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
429: };</pre>
430: </dd>
1.159 sruby 431: </dl><!--TOPIC:HTML--><!-- Proposals for v2:
432: * <select value=""> as an alternative to <option selected>
433: http://developers.slashdot.org/comments.pl?sid=426306&cid=22142072
434: <Philip`> http://www.ipiao.com.cn/ does <select size="1" name="to"><script>City_Default="PEK"</script><SCRIPT language=javascript
435: src="/js/flightcity.js"></SCRIPT></select> which is the kind of thing that could be much simpler with <select value="PEK">
436: --><p>The <code><a href="#the-select-element">select</a></code> element represents a control for
1.85 mike 437: selecting amongst a set of options.</p>
438:
439: <p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
1.1 mike 440: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. If the attribute is
441: present, then the <code><a href="#the-select-element">select</a></code> element
1.205 ! sruby 442: <a href="rendering.html#represents">represents</a> a control for selecting zero or more options
1.1 mike 443: from the <a href="#concept-select-option-list" title="concept-select-option-list">list of
444: options</a>. If the attribute is absent, then the
1.205 ! sruby 445: <code><a href="#the-select-element">select</a></code> element <a href="rendering.html#represents">represents</a> a control for
1.85 mike 446: selecting a single option from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
447:
448: <p>The <dfn id="attr-select-size" title="attr-select-size"><code>size</code></dfn>
1.1 mike 449: attribute gives the number of options to show to the user. The <code title="attr-select-size"><a href="#attr-select-size">size</a></code> attribute, if specified, must
450: have a value that is a <a href="common-microsyntaxes.html#valid-non-negative-integer">valid non-negative integer</a>
1.85 mike 451: greater than zero.</p>
452:
453: <div class="impl">
1.1 mike 454:
455: <p>The <dfn id="concept-select-size" title="concept-select-size">display size</dfn> of a
456: <code><a href="#the-select-element">select</a></code> element is the result of applying the
457: <a href="common-microsyntaxes.html#rules-for-parsing-non-negative-integers">rules for parsing non-negative integers</a> to the value of
458: element's <code title="attr-select-size"><a href="#attr-select-size">size</a></code> attribute, if
459: it has one and parsing it is successful. If applying those rules to
460: the attribute's value is not successful, or if the <code title="attr-select-size"><a href="#attr-select-size">size</a></code> attribute is absent, then the
461: element's <a href="#concept-select-size" title="concept-select-size">display size</a> is 4
462: if the element's <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
463: content attribute is present, and 1 otherwise.</p>
464:
1.85 mike 465: </div>
466:
467: <p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
1.1 mike 468: for a <code><a href="#the-select-element">select</a></code> element consists of all the
469: <code><a href="the-option-element.html#the-option-element">option</a></code> element children of the <code><a href="#the-select-element">select</a></code>
470: element, and all the <code><a href="the-option-element.html#the-option-element">option</a></code> element children of all the
471: <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element children of the <code><a href="#the-select-element">select</a></code>
1.85 mike 472: element, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
473:
474: <p>The <dfn id="attr-select-required" title="attr-select-required"><code>required</code></dfn>
1.1 mike 475: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. When specified, the
476: user will be required to select a value before submitting the
1.85 mike 477: form.</p>
478:
479: <p>If a <code><a href="#the-select-element">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required">required</a></code> attribute specified,
1.1 mike 480: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
481: attribute specified, and has a <a href="#concept-select-size" title="concept-select-size">display size</a> of 1;
482: and if the <a href="the-option-element.html#concept-option-value" title="concept-option-value">value</a> of the
483: first <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <code><a href="#the-select-element">select</a></code>
484: element's <a href="#concept-select-option-list" title="concept-select-option-list">list of
485: options</a> (if any) is the empty string, and that
486: <code><a href="the-option-element.html#the-option-element">option</a></code> element's parent node is the <code><a href="#the-select-element">select</a></code>
487: element (and not an <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element), then that
488: <code><a href="the-option-element.html#the-option-element">option</a></code> is the <code><a href="#the-select-element">select</a></code> element's
1.85 mike 489: <dfn id="placeholder-label-option">placeholder label option</dfn>.</p>
490:
491: <p>If a <code><a href="#the-select-element">select</a></code> element has a <code title="attr-select-required"><a href="#attr-select-required">required</a></code> attribute specified,
1.1 mike 492: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
493: attribute specified, and has a <a href="#concept-select-size" title="concept-select-size">display size</a> of 1,
494: then the <code><a href="#the-select-element">select</a></code> element must have a <a href="#placeholder-label-option">placeholder
1.85 mike 495: label option</a>.</p>
496:
497: <div class="impl">
1.1 mike 498:
499: <p><strong>Constraint validation</strong>: If the element has its
500: <code title="attr-select-required"><a href="#attr-select-required">required</a></code> attribute
501: specified, and either none of the <code><a href="the-option-element.html#the-option-element">option</a></code> elements in
502: the <code><a href="#the-select-element">select</a></code> element's <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> have their
503: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
504: true, or the only <code><a href="the-option-element.html#the-option-element">option</a></code> element in the
505: <code><a href="#the-select-element">select</a></code> element's <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> with its
506: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
507: true is the <a href="#placeholder-label-option">placeholder label option</a>, then the element
1.205 ! sruby 508: is <a href="constraints.html#suffering-from-being-missing">suffering from being missing</a>.</p>
1.1 mike 509:
1.85 mike 510: </div>
511:
512: <div class="impl">
1.1 mike 513:
514: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
515: attribute is absent, and the element is not <a href="attributes-common-to-form-controls.html#concept-fe-disabled" title="concept-fe-disabled">disabled</a>, then the user agent
516: should allow the user to pick an <code><a href="the-option-element.html#the-option-element">option</a></code> element in its
517: <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> that
518: is itself not <a href="the-option-element.html#concept-option-disabled" title="concept-option-disabled">disabled</a>.
519: Upon this <code><a href="the-option-element.html#the-option-element">option</a></code> element being <dfn id="concept-select-pick" title="concept-select-pick">picked</dfn> (either through a click, or
520: through unfocusing the element after changing its value, or through
1.205 ! sruby 521: a <a href="commands.html#using-the-option-element-to-define-a-command" title="option-command">menu command</a>, or through any
1.1 mike 522: other mechanism), and before the relevant user interaction event
1.159 sruby 523: <!-- interaction event spec point --> is queued (e.g. before the
1.1 mike 524: <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event), the user agent must
525: set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the
1.205 ! sruby 526: picked <code><a href="the-option-element.html#the-option-element">option</a></code> element to true and then <a href="webappapis.html#queue-a-task">queue a
! 527: task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple event</a> that bubbles named
1.1 mike 528: <code title="event-change">change</code> at the <code><a href="#the-select-element">select</a></code>
1.205 ! sruby 529: element, using the <a href="webappapis.html#user-interaction-task-source">user interaction task source</a> as the
1.1 mike 530: task source.</p>
531:
532: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
533: attribute is absent, whenever an <code><a href="the-option-element.html#the-option-element">option</a></code> element in the
534: <code><a href="#the-select-element">select</a></code> element's <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> has its
535: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
536: true, and whenever an <code><a href="the-option-element.html#the-option-element">option</a></code> element with its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true
537: is added to the <code><a href="#the-select-element">select</a></code> element's <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, the user
538: agent must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
539: other <code><a href="the-option-element.html#the-option-element">option</a></code> element in its <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> to
540: false.</p>
541:
542: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
543: attribute is absent and the element's <a href="#concept-select-size" title="concept-select-size">display size</a> is greater than 1,
544: then the user agent should also allow the user to request that the
545: <code><a href="the-option-element.html#the-option-element">option</a></code> whose <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> is true, if
546: any, be unselected. Upon this request being conveyed to the user
1.159 sruby 547: agent, and before the relevant user interaction event <!--
548: interaction event spec point --> is queued (e.g. before the <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event), the user agent must set the
1.1 mike 549: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of
1.205 ! sruby 550: that <code><a href="the-option-element.html#the-option-element">option</a></code> element to false and then <a href="webappapis.html#queue-a-task">queue a
! 551: task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple event</a> that bubbles named
1.1 mike 552: <code title="event-change">change</code> at the <code><a href="#the-select-element">select</a></code>
1.205 ! sruby 553: element, using the <a href="webappapis.html#user-interaction-task-source">user interaction task source</a> as the
1.1 mike 554: task source.</p>
555:
556: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
557: attribute is absent and the element's <a href="#concept-select-size" title="concept-select-size">display size</a> is 1, then whenever
558: there are no <code><a href="the-option-element.html#the-option-element">option</a></code> elements in the <code><a href="#the-select-element">select</a></code>
559: element's <a href="#concept-select-option-list" title="concept-select-option-list">list of
560: options</a> that have their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true,
561: the user agent must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the first
562: <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> in
563: <a href="infrastructure.html#tree-order">tree order</a> that is not <a href="the-option-element.html#concept-option-disabled" title="concept-option-disabled">disabled</a>, if any, to
564: true.</p>
565:
566: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
567: attribute is present, and the element is not <a href="attributes-common-to-form-controls.html#concept-fe-disabled" title="concept-fe-disabled">disabled</a>, then the user agent
568: should allow the user to <dfn id="concept-select-toggle" title="concept-select-toggle">toggle</dfn> the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the
569: <code><a href="the-option-element.html#the-option-element">option</a></code> elements in its <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> that are
570: themselves not <a href="the-option-element.html#concept-option-disabled" title="concept-option-disabled">disabled</a>
1.205 ! sruby 571: (either through a click, or through a <a href="commands.html#using-the-option-element-to-define-a-command" title="option-command">menu command</a>, or any other mechanism).
1.1 mike 572: Upon the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of one or
573: more <code><a href="the-option-element.html#the-option-element">option</a></code> elements being changed by the user, and
1.159 sruby 574: before the relevant user interaction event <!-- interaction event
575: spec point --> is queued (e.g. before a related <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event), the user agent must
1.205 ! sruby 576: <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple event</a> that
1.1 mike 577: bubbles named <code title="event-change">change</code> at the
1.205 ! sruby 578: <code><a href="#the-select-element">select</a></code> element, using the <a href="webappapis.html#user-interaction-task-source">user interaction task
1.1 mike 579: source</a> as the task source.</p>
580:
1.205 ! sruby 581: <p>The <a href="constraints.html#concept-form-reset-control" title="concept-form-reset-control">reset
1.1 mike 582: algorithm</a> for <code><a href="#the-select-element">select</a></code> elements is to go through
583: all the <code><a href="the-option-element.html#the-option-element">option</a></code> elements in the element's <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, and set
584: their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a>
585: to true if the <code><a href="the-option-element.html#the-option-element">option</a></code> element has a <code title="attr-option-selected"><a href="the-option-element.html#attr-option-selected">selected</a></code> attribute, and false
586: otherwise.</p>
587:
1.85 mike 588: </div>
589:
590: <p>The <code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code> attribute is used to
1.1 mike 591: explicitly associate the <code><a href="#the-select-element">select</a></code> element with its
592: <a href="association-of-controls-and-forms.html#form-owner">form owner</a>. The <code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name">name</a></code>
593: attribute represents the element's name. The <code title="attr-fe-disabled"><a href="attributes-common-to-form-controls.html#attr-fe-disabled">disabled</a></code> attribute is used to make
594: the control non-interactive and to prevent its value from being
595: submitted. The <code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus">autofocus</a></code>
1.85 mike 596: attribute controls focus.</p>
597:
1.159 sruby 598: <!--TOPIC:DOM APIs-->
1.85 mike 599: <dl class="domintro"><dt><var title="">select</var> . <code title="dom-select-type"><a href="#dom-select-type">type</a></code></dt>
1.1 mike 600:
601: <dd>
602:
603: <p>Returns "<code title="">select-multiple</code>" if the element
604: has a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
605: attribute, and "<code title="">select-one</code>"
606: otherwise.</p>
607:
608: </dd>
609:
610: <dt><var title="">select</var> . <code title="dom-select-options"><a href="#dom-select-options">options</a></code></dt>
611:
612: <dd>
613:
1.159 sruby 614: <p>Returns an <code><a href="common-dom-interfaces.html#htmloptionscollection-0">HTMLOptionsCollection</a></code> of the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
1.1 mike 615:
616: </dd>
617:
618: <dt><var title="">select</var> . <code title="dom-select-length"><a href="#dom-select-length">length</a></code> [ = <var title="">value</var> ]</dt>
619: <dd>
620: <p>Returns the number of elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
621: <p>When set to a smaller number, truncates the number of <code><a href="the-option-element.html#the-option-element">option</a></code> elements in the <code><a href="#the-select-element">select</a></code>.</p>
622: <p>When set to a greater number, adds new blank <code><a href="the-option-element.html#the-option-element">option</a></code> elements to the <code><a href="#the-select-element">select</a></code>.</p>
623: </dd>
624:
625: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="#dom-select-item">item</a></code>(<var title="">index</var>)</dt>
626: <dt><var title="">select</var>[<var title="">index</var>]</dt>
627: <dd>
628: <p>Returns the item with index <var title="">index</var> from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>. The items are sorted in <a href="infrastructure.html#tree-order">tree order</a>.</p>
629: </dd>
630:
631: <dt><var title="">element</var> = <var title="">select</var> . <code title="dom-select-item"><a href="#dom-select-item">namedItem</a></code>(<var title="">name</var>)</dt>
632: <dd>
1.205 ! sruby 633: <p>Returns the item with <a href="infrastructure.html#concept-id" title="concept-id">ID</a> or <code title="attr-option-name"><a href="obsolete.html#attr-option-name">name</a></code> <var title="">name</var> from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
1.1 mike 634: <p>If there are multiple matching items, then a <code><a href="infrastructure.html#nodelist">NodeList</a></code> object containing all those elements is returned.</p>
635: <p>Returns null if no element with that <a href="infrastructure.html#concept-id" title="concept-id">ID</a> could be found.</p>
636: </dd>
637:
638: <dt><var title="">select</var> . <code title="dom-select-add"><a href="#dom-select-add">add</a></code>(<var title="">element</var> [, <var title="">before</var> ])</dt>
639: <dd>
640: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
641: <p>The <var title="">before</var> argument can be a number, in
642: which case <var title="">element</var> is inserted before the item
643: with that number, or an element from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, in
644: which case <var title="">element</var> is inserted before that
645: element.</p>
646: <p>If <var title="">before</var> is omitted, null, or a number out
647: of range, then <var title="">element</var> will be added at the
648: end of the list.</p>
649: <p>This method will throw a <code><a href="infrastructure.html#hierarchyrequesterror">HierarchyRequestError</a></code>
650: exception if <var title="">element</var> is an ancestor of the
651: element into which it is to be inserted.</p>
652: </dd>
653:
654: <dt><var title="">select</var> . <code title="dom-select-selectedOptions"><a href="#dom-select-selectedoptions">selectedOptions</a></code></dt>
655:
656: <dd>
657:
658: <p>Returns an <code><a href="infrastructure.html#htmlcollection">HTMLCollection</a></code> of the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> that are
659: selected.</p>
660:
661: </dd>
662:
663: <dt><var title="">select</var> . <code title="dom-select-selectedIndex"><a href="#dom-select-selectedindex">selectedIndex</a></code> [ = <var title="">value</var> ]</dt>
664:
665: <dd>
666:
667: <p>Returns the index of the first selected item, if any, or
1.204 sruby 668: −1 if there is no selected item.</p>
1.1 mike 669:
670: <p>Can be set, to change the selection.</p>
671:
672: </dd>
673:
674: <dt><var title="">select</var> . <code title="dom-select-value"><a href="#dom-select-value">value</a></code> [ = <var title="">value</var> ]</dt>
675:
676: <dd>
677:
678: <p>Returns the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the
679: first selected item, if any, or the empty string if there is no
680: selected item.</p>
681:
682: <p>Can be set, to change the selection.</p>
683:
684: </dd>
685:
686: </dl><div class="impl">
687:
688: <p>The <dfn id="dom-select-type" title="dom-select-type"><code>type</code></dfn> IDL
689: attribute, on getting, must return the string "<code title="">select-one</code>" if the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute is absent,
690: and the string "<code title="">select-multiple</code>" if the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute is
691: present.</p>
692:
693: <p>The <dfn id="dom-select-options" title="dom-select-options"><code>options</code></dfn>
1.159 sruby 694: IDL attribute must return an <code><a href="common-dom-interfaces.html#htmloptionscollection-0">HTMLOptionsCollection</a></code>
1.1 mike 695: rooted at the <code><a href="#the-select-element">select</a></code> node, whose filter matches the
696: elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of
697: options</a>.</p>
698:
699: <p>The <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection is
700: also mirrored on the <code><a href="#htmlselectelement">HTMLSelectElement</a></code> object. The
701: <a href="infrastructure.html#supported-property-indices">supported property indices</a> at any instant are the
702: indices supported by the object returned by the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> attribute at that
703: instant.</p>
704:
705: <p>The <dfn id="dom-select-length" title="dom-select-length"><code>length</code></dfn> IDL
706: attribute must return the number of nodes <a href="infrastructure.html#represented-by-the-collection" title="represented
707: by the collection">represented</a> by the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection. On setting, it
708: must act like the attribute of the same name on the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection.</p>
709:
710: <p>The <dfn id="dom-select-item" title="dom-select-item"><code>item(<var title="">index</var>)</code></dfn> method must return the value
711: returned by the method of the same name on the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection, when invoked
712: with the same argument.</p>
713:
714: <p>The <dfn id="dom-select-nameditem" title="dom-select-namedItem"><code>namedItem(<var title="">name</var>)</code></dfn> method must return the value
715: returned by the method of the same name on the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection, when invoked
716: with the same argument.</p>
717:
718: <p>When the user agent is to <dfn id="dom-htmlselectelement-setter" title="dom-HTMLSelectElement-setter">set the value of a new indexed
719: property</dfn> for a given property index <var title="">index</var>
720: to a new value <var title="">value</var>, it must instead <a href="common-dom-interfaces.html#dom-htmloptionscollection-setter" title="dom-HTMLOptionsCollection-setter">set the value of a new
721: indexed property</a> with the given property index <var title="">index</var> to the new value <var title="">value</var> on the
722: <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection.</p>
723:
724: <p>Similarly, the <dfn id="dom-select-add" title="dom-select-add"><code>add()</code></dfn> and <dfn id="dom-select-remove" title="dom-select-remove"><code>remove()</code></dfn> methods must
725: act like their namesake methods on that same <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection.</p>
726:
727: <p>The <dfn id="dom-select-selectedoptions" title="dom-select-selectedOptions"><code>selectedOptions</code></dfn>
728: IDL attribute must return an <code><a href="infrastructure.html#htmlcollection">HTMLCollection</a></code> rooted at
729: the <code><a href="#the-select-element">select</a></code> node, whose filter matches the elements in
730: the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>
731: that have their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
732: true.</p>
733:
734: <p>The <dfn id="dom-select-selectedindex" title="dom-select-selectedIndex"><code>selectedIndex</code></dfn>
735: IDL attribute, on getting, must return the <a href="the-option-element.html#concept-option-index" title="concept-option-index">index</a> of the first
736: <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> in
737: <a href="infrastructure.html#tree-order">tree order</a> that has its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true,
1.204 sruby 738: if any. If there isn't one, then it must return −1.</p>
1.1 mike 739:
740: <p>On setting, the <code title="dom-select-selectedIndex"><a href="#dom-select-selectedindex">selectedIndex</a></code> attribute must
741: set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
742: <code><a href="the-option-element.html#the-option-element">option</a></code> elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> to false,
743: and then the <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> whose
744: <a href="the-option-element.html#concept-option-index" title="concept-option-index">index</a> is the given new
745: value, if any, must have its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
746: true.</p>
747:
748: <p>The <dfn id="dom-select-value" title="dom-select-value"><code>value</code></dfn> IDL
749: attribute, on getting, must return the <a href="the-option-element.html#concept-option-value" title="concept-option-value">value</a> of the first
750: <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> in
751: <a href="infrastructure.html#tree-order">tree order</a> that has its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true,
752: if any. If there isn't one, then it must return the empty
753: string.</p>
754:
755: <p>On setting, the <code title="dom-select-value"><a href="#dom-select-value">value</a></code>
756: attribute must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
757: <code><a href="the-option-element.html#the-option-element">option</a></code> elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> to false,
758: and then the first <code><a href="the-option-element.html#the-option-element">option</a></code> element in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, in
759: <a href="infrastructure.html#tree-order">tree order</a>, whose <a href="the-option-element.html#concept-option-value" title="concept-option-value">value</a> is equal to the given new
760: value, if any, must have its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
761: true.</p>
762:
763: <p>The <dfn id="dom-select-multiple" title="dom-select-multiple"><code>multiple</code></dfn>,
764: <dfn id="dom-select-required" title="dom-select-required"><code>required</code></dfn>, and
765: <dfn id="dom-select-size" title="dom-select-size"><code>size</code></dfn> IDL attributes
766: must <a href="common-dom-interfaces.html#reflect">reflect</a> the respective content attributes of the
767: same name. The <code title="dom-select-size"><a href="#dom-select-size">size</a></code> IDL
1.159 sruby 768: attribute has a default value of zero.</p> <!-- see bug 12288 for
769: compat reasons why .size allows zero (it's not limited to values
770: greater than zero) even though that value really makes no sense -->
1.4 mike 771:
1.1 mike 772: <p class="note">For historical reasons, the default value of the
773: <code title="dom-select-size"><a href="#dom-select-size">size</a></code> IDL attribute does not
774: return the actual size used, which, in the absence of the <code title="attr-select-size"><a href="#attr-select-size">size</a></code> content attribute, is either 1
775: or 4 depending on the presence of the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute.</p>
776:
1.205 ! sruby 777: <p>The <code title="dom-cva-willValidate"><a href="constraints.html#dom-cva-willvalidate">willValidate</a></code>, <code title="dom-cva-validity"><a href="constraints.html#dom-cva-validity">validity</a></code>, and <code title="dom-cva-validationMessage"><a href="constraints.html#dom-cva-validationmessage">validationMessage</a></code> IDL
! 778: attributes, and the <code title="dom-cva-checkValidity"><a href="constraints.html#dom-cva-checkvalidity">checkValidity()</a></code> and <code title="dom-cva-setCustomValidity"><a href="constraints.html#dom-cva-setcustomvalidity">setCustomValidity()</a></code>
! 779: methods, are part of the <a href="constraints.html#the-constraint-validation-api">constraint validation API</a>. The
1.188 sruby 780: <code title="dom-lfe-labels"><a href="the-label-element.html#dom-lfe-labels">labels</a></code> IDL attribute provides a
781: list of the element's <code><a href="the-label-element.html#the-label-element">label</a></code>s. The <code title="dom-fe-autofocus"><a href="attributes-common-to-form-controls.html#dom-fe-autofocus">autofocus</a></code>, <code title="dom-fe-disabled"><a href="attributes-common-to-form-controls.html#dom-fe-disabled">disabled</a></code>, <code title="dom-fae-form"><a href="association-of-controls-and-forms.html#dom-fae-form">form</a></code>, and <code title="dom-fe-name"><a href="attributes-common-to-form-controls.html#dom-fe-name">name</a></code> IDL attributes are part of the
1.1 mike 782: element's forms API.</p>
783:
1.85 mike 784: </div>
1.159 sruby 785: <!--TOPIC:HTML-->
1.85 mike 786:
787: <div class="example">
1.1 mike 788:
789: <p>The following example shows how a <code><a href="#the-select-element">select</a></code> element
790: can be used to offer the user with a set of options from which the
791: user can select a single option. The default option is
792: preselected.</p>
793:
794: <pre><p>
795: <label for="unittype">Select unit type:</label>
796: <select id="unittype" name="unittype">
797: <option value="1"> Miner </option>
798: <option value="2"> Puffer </option>
799: <option value="3" selected> Snipey </option>
800: <option value="4"> Max </option>
801: <option value="5"> Firebot </option>
802: </select>
803: </p></pre>
804:
805: <p>When there is no default option, a placeholder can be used
806: instead:</p>
807:
808: <pre><select name="unittype" <strong>required</strong>>
809: <strong><option value=""> Select unit type </option></strong>
810: <option value="1"> Miner </option>
811: <option value="2"> Puffer </option>
812: <option value="3"> Snipey </option>
813: <option value="4"> Max </option>
814: <option value="5"> Firebot </option>
815: </select></pre>
816:
1.85 mike 817: </div>
818:
819: <div class="example">
1.1 mike 820:
821: <p>Here, the user is offered a set of options from which he can
822: select any number. By default, all five options are selected.</p>
823:
824: <pre><p>
825: <label for="allowedunits">Select unit types to enable on this map:</label>
826: <select id="allowedunits" name="allowedunits" multiple>
827: <option value="1" selected> Miner </option>
828: <option value="2" selected> Puffer </option>
829: <option value="3" selected> Snipey </option>
830: <option value="4" selected> Max </option>
831: <option value="5" selected> Firebot </option>
832: </select>
833: </p></pre>
834:
1.85 mike 835: </div>
836:
837: <div class="example">
1.1 mike 838:
839: <p>Sometimes, a user has to select one or more items. This example
840: shows such an interface.</p>
841:
842: <pre><p>Select the songs from that you would like on your Act II Mix Tape:</p>
843: <select multiple required name="act2">
844: <option value="s1">It Sucks to Be Me (Reprise)
845: <option value="s2">There is Life Outside Your Apartment
846: <option value="s3">The More You Ruv Someone
847: <option value="s4">Schadenfreude
848: <option value="s5">I Wish I Could Go Back to College
849: <option value="s6">The Money Song
850: <option value="s7">School for Monsters
851: <option value="s8">The Money Song (Reprise)
852: <option value="s9">There's a Fine, Fine Line (Reprise)
853: <option value="s10">What Do You Do With a B.A. in English? (Reprise)
854: <option value="s11">For Now
855: </select></pre>
856:
1.85 mike 857: </div>
858:
859:
860:
1.204 sruby 861:
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