Annotation of html5/spec/the-select-element.html, revision 1.194
1.88 mike 1: <!DOCTYPE html>
1.159 sruby 2: <html lang="en-US-x-Hixie"><head><title>4.10.9 The select element — HTML5</title><style type="text/css">
1.1 mike 3: pre { margin-left: 2em; white-space: pre-wrap; }
4: h2 { margin: 3em 0 1em 0; }
5: h3 { margin: 2.5em 0 1em 0; }
6: h4 { margin: 2.5em 0 0.75em 0; }
7: h5, h6 { margin: 2.5em 0 1em; }
8: h1 + h2, h1 + h2 + h2 { margin: 0.75em 0 0.75em; }
9: h2 + h3, h3 + h4, h4 + h5, h5 + h6 { margin-top: 0.5em; }
10: p { margin: 1em 0; }
11: hr:not(.top) { display: block; background: none; border: none; padding: 0; margin: 2em 0; height: auto; }
12: dl, dd { margin-top: 0; margin-bottom: 0; }
13: dt { margin-top: 0.75em; margin-bottom: 0.25em; clear: left; }
14: dt + dt { margin-top: 0; }
15: dd dt { margin-top: 0.25em; margin-bottom: 0; }
16: dd p { margin-top: 0; }
17: dd dl + p { margin-top: 1em; }
18: dd table + p { margin-top: 1em; }
19: p + * > li, dd li { margin: 1em 0; }
20: dt, dfn { font-weight: bold; font-style: normal; }
21: i, em { font-style: italic; }
22: dt dfn { font-style: italic; }
23: pre, code { font-size: inherit; font-family: monospace; font-variant: normal; }
24: pre strong { color: black; font: inherit; font-weight: bold; background: yellow; }
25: pre em { font-weight: bolder; font-style: normal; }
26: @media screen { code { color: orangered; } code :link, code :visited { color: inherit; } }
27: var sub { vertical-align: bottom; font-size: smaller; position: relative; top: 0.1em; }
28: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
29: table thead, table tbody { border-bottom: solid; }
30: table tbody th:first-child { border-left: solid; }
31: table tbody th { text-align: left; }
32: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
33: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
34:
35: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
36: .matrix, .matrix td { border: none; text-align: right; }
37: .matrix { margin-left: 2em; }
38: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
39: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
40: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
41:
42: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
43: img.extra, p.overview { float: right; }
44: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; position: relative; }
45: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
46: 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 }
47: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
48: pre.css:first-line { color: #AAAA50; }
49: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
50: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
51: dl.domintro dt, dl.domintro dt * { color: black; text-decoration: none; }
52: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
53: dl.domintro dd p { margin: 0.5em 0; }
54: 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; }
55: dl.switch { padding-left: 2em; }
56: dl.switch > dt { text-indent: -1.5em; }
57: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
58: dl.triple { padding: 0 0 0 1em; }
59: dl.triple dt, dl.triple dd { margin: 0; display: inline }
60: dl.triple dt:after { content: ':'; }
61: dl.triple dd:after { content: '\A'; white-space: pre; }
62: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
63: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
64: a .diff-new { border-bottom: 1px blue solid; }
65:
1.180 sruby 66: figure.diagrams { border: double black; background: white; padding: 1em; }
67: figure.diagrams img { display: block; margin: 1em auto; }
68:
1.1 mike 69: h2 { page-break-before: always; }
70: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
71: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
72:
73: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]),
74: li > span:not([title=""]):not([class="XXX"]):not([class="impl"]):not([class="note"]), { border-bottom: solid #9999CC; }
75:
76: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
77: div.head p { margin: 0; }
78: div.head h1 { margin: 0; }
79: div.head .logo { float: right; margin: 0 1em; }
80: div.head .logo img { border: none } /* remove border from top image */
81: div.head dl { margin: 1em 0; }
82: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
83:
84: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
85: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
86: body > .toc > li > * { margin-bottom: 0.5em; }
87: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
88: .toc, .toc li { list-style: none; }
89:
90: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
91: .brief li { margin: 0; padding: 0; }
92: .brief li p { margin: 0; padding: 0; }
93:
94: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
95: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
96: .category-list li { display: inline; }
97: .category-list li:not(:last-child)::after { content: ', '; }
98: .category-list li > span, .category-list li > a { text-transform: lowercase; }
99: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
100:
101: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
102: .XXX > :first-child { margin-top: 0; }
103: p .XXX { line-height: 3em; }
104: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
105: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
106: .annotation :link, .annotation :visited { color: inherit; }
107: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
108: .annotation span { border: none ! important; }
109: .note { color: green; background: transparent; font-family: sans-serif; }
110: .warning { color: red; background: transparent; }
111: .note, .warning { font-weight: bolder; font-style: italic; }
112: .note em, .warning em, .note i, .warning i { font-style: normal; }
113: p.note, div.note { padding: 0.5em 2em; }
114: span.note { padding: 0 2em; }
115: .note p:first-child, .warning p:first-child { margin-top: 0; }
116: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
117: .warning:before { font-style: normal; }
118: p.note:before { content: 'Note: '; }
119: p.warning:before { content: '\26A0 Warning! '; }
120:
121: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
122: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
123: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
124: .bookkeeping dt { margin: 0.5em 2em 0; }
125: .bookkeeping dd { margin: 0 3em 0.5em; }
126:
127: h4 { position: relative; z-index: 3; }
128: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
129: .element {
130: background: #EEEEFF;
131: color: black;
132: margin: 0 0 1em 0.15em;
133: padding: 0 1em 0.25em 0.75em;
134: border-left: solid #9999FF 0.25em;
135: position: relative;
136: z-index: 1;
137: }
138: .element:before {
139: position: absolute;
140: z-index: 2;
141: top: 0;
142: left: -1.15em;
143: height: 2em;
144: width: 0.9em;
145: background: #EEEEFF;
146: content: ' ';
147: border-style: none none solid solid;
148: border-color: #9999FF;
149: border-width: 0.25em;
150: }
151:
152: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
153: td > .example:only-child { margin: 0 0 0 0.1em; }
154:
155: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
156: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
157: ul.domTree li li { list-style: none; }
158: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
159: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
160: ul.domTree span { font-style: italic; font-family: serif; }
161: ul.domTree .t1 code { color: purple; font-weight: bold; }
162: ul.domTree .t2 { font-style: normal; font-family: monospace; }
163: ul.domTree .t2 .name { color: black; font-weight: bold; }
164: ul.domTree .t2 .value { color: blue; font-weight: normal; }
165: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
166: ul.domTree .t7 code, .domTree .t8 code { color: green; }
167: ul.domTree .t10 code { color: teal; }
168:
169: body.dfnEnabled dfn { cursor: pointer; }
170: .dfnPanel {
171: display: inline;
172: position: absolute;
173: z-index: 10;
174: height: auto;
175: width: auto;
176: padding: 0.5em 0.75em;
177: font: small sans-serif, Droid Sans Fallback;
178: background: #DDDDDD;
179: color: black;
180: border: outset 0.2em;
181: }
182: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
183: .dfnPanel :link, .dfnPanel :visited { color: black; }
184: .dfnPanel p { font-weight: bolder; }
185: .dfnPanel * + p { margin-top: 0.25em; }
186: .dfnPanel li { list-style-position: inside; }
187:
188: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
189: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
190: #configUI p label { display: block; }
191: #configUI #updateUI, #configUI .loginUI { text-align: center; }
192: #configUI input[type=button] { display: block; margin: auto; }
193:
194: fieldset { margin: 1em; padding: 0.5em 1em; }
195: fieldset > legend + * { margin-top: 0; }
196: fieldset > :last-child { margin-bottom: 0; }
197: fieldset p { margin: 0.5em 0; }
198:
1.159 sruby 199: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><style type="text/css">
1.1 mike 200:
201: .applies thead th > * { display: block; }
202: .applies thead code { display: block; }
203: .applies tbody th { whitespace: nowrap; }
204: .applies td { text-align: center; }
205: .applies .yes { background: yellow; }
206:
207: .matrix, .matrix td { border: hidden; text-align: right; }
208: .matrix { margin-left: 2em; }
209:
210: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
211: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
212: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
213:
214: td.eg { border-width: thin; text-align: center; }
215:
216: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
217: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
218: #table-example-1 caption { padding-bottom: 0.5em; }
219: #table-example-1 thead, #table-example-1 tbody { border: none; }
220: #table-example-1 th, #table-example-1 td { border: solid thin; }
221: #table-example-1 th { font-weight: normal; }
222: #table-example-1 td { border-style: none solid; vertical-align: top; }
223: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
224: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
225: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
226: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
227: #table-example-1 tbody td:first-child::after { content: leader(". "); }
228: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
229: #table-example-1 tbody td:first-child + td { width: 10em; }
230: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
231: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
232:
233: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
234: .apple-table-examples * { font-family: "Times", serif; }
235: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
236: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
237: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
238: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
239: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
240: .apple-table-examples td { text-align: right; vertical-align: top; }
241: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
242: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
243: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
244: .apple-table-examples sup { line-height: 0; }
245:
246: .details-example img { vertical-align: top; }
247:
248: #base64-table {
249: white-space: nowrap;
250: font-size: 0.6em;
251: column-width: 6em;
252: column-count: 5;
253: column-gap: 1em;
254: -moz-column-width: 6em;
255: -moz-column-count: 5;
256: -moz-column-gap: 1em;
257: -webkit-column-width: 6em;
258: -webkit-column-count: 5;
259: -webkit-column-gap: 1em;
260: }
261: #base64-table thead { display: none; }
262: #base64-table * { border: none; }
263: #base64-table tbody td:first-child:after { content: ':'; }
264: #base64-table tbody td:last-child { text-align: right; }
265:
266: #named-character-references-table {
267: white-space: nowrap;
268: font-size: 0.6em;
269: column-width: 30em;
270: column-gap: 1em;
271: -moz-column-width: 30em;
272: -moz-column-gap: 1em;
273: -webkit-column-width: 30em;
274: -webkit-column-gap: 1em;
275: }
276: #named-character-references-table > table > tbody > tr > td:first-child + td,
277: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
278: #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; }
279: #named-character-references-table > table > tbody > tr#entity-CounterClockwiseContourIntegral > td:first-child { font-size: 0.5em; }
280:
281: .glyph.control { color: red; }
282:
283: @font-face {
284: font-family: 'Essays1743';
1.178 sruby 285: src: url('../fonts/Essays1743.ttf');
1.1 mike 286: }
287: @font-face {
288: font-family: 'Essays1743';
289: font-weight: bold;
1.178 sruby 290: src: url('../fonts/Essays1743-Bold.ttf');
1.1 mike 291: }
292: @font-face {
293: font-family: 'Essays1743';
294: font-style: italic;
1.178 sruby 295: src: url('../fonts/Essays1743-Italic.ttf');
1.1 mike 296: }
297: @font-face {
298: font-family: 'Essays1743';
299: font-style: italic;
300: font-weight: bold;
1.178 sruby 301: src: url('../fonts/Essays1743-BoldItalic.ttf');
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) {
306: var params = location.search.substr(1).split("&");
307: for (var index = 0; index < params.length; index++) {
308: if (params[index] == name)
309: return "1";
310: var data = params[index].split("=");
311: if (data[0] == name)
312: return unescape(data[1]);
313: }
314: var cookies = document.cookie.split("; ");
315: for (var index = 0; index < cookies.length; index++) {
316: var data = cookies[index].split("=");
317: if (data[0] == name)
318: return unescape(data[1]);
319: }
320: return null;
321: }
1.192 sruby 322: </script><link href="the-button-element.html" title="4.10.8 The button element" rel="prev">
323: <link href="spec.html#contents" title="Table of contents" rel="contents">
1.1 mike 324: <link href="the-datalist-element.html" title="4.10.10 The datalist 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>
1.192 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>
1.194 ! sruby 330: <h2 class="no-num no-toc" id="editor's-draft-date-1-january-1970">Editor's Draft 9 October 2012</h2>
1.85 mike 331: </div>
1.192 sruby 332: <div class="prev_next">
1.1 mike 333: <a href="the-button-element.html">← 4.10.8 The button element</a> –
1.192 sruby 334: <a href="spec.html#contents">Table of contents</a> –
1.1 mike 335: <a href="the-datalist-element.html">4.10.10 The datalist element →</a>
1.192 sruby 336: </div>
1.1 mike 337:
1.85 mike 338: <h4 id="the-select-element"><span class="secno">4.10.9 </span>The <dfn><code>select</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>
1.159 sruby 341: <dd><a href="content-models.html#flow-content-1">Flow content</a>.</dd>
342: <dd><a href="content-models.html#phrasing-content-1">Phrasing content</a>.</dd>
343: <dd><a href="content-models.html#interactive-content-0">Interactive content</a>.</dd>
1.1 mike 344: <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 345: <dd><a href="content-models.html#palpable-content-0">Palpable content</a>.</dd>
1.25 mike 346: <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 347: <dd>Where <a href="content-models.html#phrasing-content-1">phrasing content</a> is expected.</dd>
1.25 mike 348: <dt><a href="element-definitions.html#element-dfn-content-model" title="element-dfn-content-model">Content model</a>:</dt>
1.1 mike 349: <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 350: <dt><a href="element-definitions.html#element-dfn-attributes" title="element-dfn-attributes">Content attributes</a>:</dt>
1.1 mike 351: <dd><a href="global-attributes.html#global-attributes">Global attributes</a></dd>
352: <dd><code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus">autofocus</a></code></dd>
353: <dd><code title="attr-fe-disabled"><a href="attributes-common-to-form-controls.html#attr-fe-disabled">disabled</a></code></dd>
354: <dd><code title="attr-fae-form"><a href="association-of-controls-and-forms.html#attr-fae-form">form</a></code></dd>
355: <dd><code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code></dd>
356: <dd><code title="attr-fe-name"><a href="attributes-common-to-form-controls.html#attr-fe-name">name</a></code></dd>
357: <dd><code title="attr-select-required"><a href="#attr-select-required">required</a></code></dd>
358: <dd><code title="attr-select-size"><a href="#attr-select-size">size</a></code></dd>
1.159 sruby 359: <dt><a href="element-definitions.html#element-dfn-dom" title="element-dfn-dom">DOM interface</a>:</dt><!--TOPIC:DOM APIs-->
1.1 mike 360: <dd>
361: <pre class="idl">interface <dfn id="htmlselectelement">HTMLSelectElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
362: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-autofocus" title="dom-fe-autofocus">autofocus</a>;
363: attribute boolean <a href="attributes-common-to-form-controls.html#dom-fe-disabled" title="dom-fe-disabled">disabled</a>;
364: 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>;
365: attribute boolean <a href="#dom-select-multiple" title="dom-select-multiple">multiple</a>;
366: attribute DOMString <a href="attributes-common-to-form-controls.html#dom-fe-name" title="dom-fe-name">name</a>;
367: attribute boolean <a href="#dom-select-required" title="dom-select-required">required</a>;
368: attribute unsigned long <a href="#dom-select-size" title="dom-select-size">size</a>;
369:
370: readonly attribute DOMString <a href="#dom-select-type" title="dom-select-type">type</a>;
371:
1.159 sruby 372: 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 373: attribute unsigned long <a href="#dom-select-length" title="dom-select-length">length</a>;
374: getter <a href="infrastructure.html#element">Element</a> <a href="#dom-select-item" title="dom-select-item">item</a>(unsigned long index);
375: object <a href="#dom-select-nameditem" title="dom-select-namedItem">namedItem</a>(DOMString name);
1.74 mike 376: 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 377: void <a href="#dom-select-remove" title="dom-select-remove">remove</a>(long index);
1.183 sruby 378: <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 379:
380: readonly attribute <a href="infrastructure.html#htmlcollection">HTMLCollection</a> <a href="#dom-select-selectedoptions" title="dom-select-selectedOptions">selectedOptions</a>;
381: attribute long <a href="#dom-select-selectedindex" title="dom-select-selectedIndex">selectedIndex</a>;
382: attribute DOMString <a href="#dom-select-value" title="dom-select-value">value</a>;
383:
1.192 sruby 384: readonly attribute boolean <a href="textFieldSelection.html#dom-cva-willvalidate" title="dom-cva-willValidate">willValidate</a>;
385: readonly attribute <a href="textFieldSelection.html#validitystate">ValidityState</a> <a href="textFieldSelection.html#dom-cva-validity" title="dom-cva-validity">validity</a>;
386: readonly attribute DOMString <a href="textFieldSelection.html#dom-cva-validationmessage" title="dom-cva-validationMessage">validationMessage</a>;
387: boolean <a href="textFieldSelection.html#dom-cva-checkvalidity" title="dom-cva-checkValidity">checkValidity</a>();
388: void <a href="textFieldSelection.html#dom-cva-setcustomvalidity" title="dom-cva-setCustomValidity">setCustomValidity</a>(DOMString error);
1.1 mike 389:
390: readonly attribute <a href="infrastructure.html#nodelist">NodeList</a> <a href="the-label-element.html#dom-lfe-labels" title="dom-lfe-labels">labels</a>;
391: };</pre>
392: </dd>
1.159 sruby 393: </dl><!--TOPIC:HTML--><!-- Proposals for v2:
394: * <select value=""> as an alternative to <option selected>
395: http://developers.slashdot.org/comments.pl?sid=426306&cid=22142072
396: <Philip`> http://www.ipiao.com.cn/ does <select size="1" name="to"><script>City_Default="PEK"</script><SCRIPT language=javascript
397: src="/js/flightcity.js"></SCRIPT></select> which is the kind of thing that could be much simpler with <select value="PEK">
398: --><p>The <code><a href="#the-select-element">select</a></code> element represents a control for
1.85 mike 399: selecting amongst a set of options.</p>
400:
401: <p>The <dfn id="attr-select-multiple" title="attr-select-multiple"><code>multiple</code></dfn>
1.1 mike 402: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. If the attribute is
403: present, then the <code><a href="#the-select-element">select</a></code> element
1.192 sruby 404: <a href="textFieldSelection.html#represents">represents</a> a control for selecting zero or more options
1.1 mike 405: from the <a href="#concept-select-option-list" title="concept-select-option-list">list of
406: options</a>. If the attribute is absent, then the
1.192 sruby 407: <code><a href="#the-select-element">select</a></code> element <a href="textFieldSelection.html#represents">represents</a> a control for
1.85 mike 408: selecting a single option from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
409:
410: <p>The <dfn id="attr-select-size" title="attr-select-size"><code>size</code></dfn>
1.1 mike 411: 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
412: have a value that is a <a href="common-microsyntaxes.html#valid-non-negative-integer">valid non-negative integer</a>
1.85 mike 413: greater than zero.</p>
414:
415: <div class="impl">
1.1 mike 416:
417: <p>The <dfn id="concept-select-size" title="concept-select-size">display size</dfn> of a
418: <code><a href="#the-select-element">select</a></code> element is the result of applying the
419: <a href="common-microsyntaxes.html#rules-for-parsing-non-negative-integers">rules for parsing non-negative integers</a> to the value of
420: element's <code title="attr-select-size"><a href="#attr-select-size">size</a></code> attribute, if
421: it has one and parsing it is successful. If applying those rules to
422: 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
423: element's <a href="#concept-select-size" title="concept-select-size">display size</a> is 4
424: if the element's <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
425: content attribute is present, and 1 otherwise.</p>
426:
1.85 mike 427: </div>
428:
429: <p>The <dfn id="concept-select-option-list" title="concept-select-option-list">list of options</dfn>
1.1 mike 430: for a <code><a href="#the-select-element">select</a></code> element consists of all the
431: <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>
432: element, and all the <code><a href="the-option-element.html#the-option-element">option</a></code> element children of all the
433: <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 434: element, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
435:
436: <p>The <dfn id="attr-select-required" title="attr-select-required"><code>required</code></dfn>
1.1 mike 437: attribute is a <a href="common-microsyntaxes.html#boolean-attribute">boolean attribute</a>. When specified, the
438: user will be required to select a value before submitting the
1.85 mike 439: form.</p>
440:
441: <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 442: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
443: attribute specified, and has a <a href="#concept-select-size" title="concept-select-size">display size</a> of 1;
444: and if the <a href="the-option-element.html#concept-option-value" title="concept-option-value">value</a> of the
445: 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>
446: element's <a href="#concept-select-option-list" title="concept-select-option-list">list of
447: options</a> (if any) is the empty string, and that
448: <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>
449: element (and not an <code><a href="the-optgroup-element.html#the-optgroup-element">optgroup</a></code> element), then that
450: <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 451: <dfn id="placeholder-label-option">placeholder label option</dfn>.</p>
452:
453: <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 454: does not have a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
455: attribute specified, and has a <a href="#concept-select-size" title="concept-select-size">display size</a> of 1,
456: then the <code><a href="#the-select-element">select</a></code> element must have a <a href="#placeholder-label-option">placeholder
1.85 mike 457: label option</a>.</p>
458:
459: <div class="impl">
1.1 mike 460:
461: <p><strong>Constraint validation</strong>: If the element has its
462: <code title="attr-select-required"><a href="#attr-select-required">required</a></code> attribute
463: specified, and either none of the <code><a href="the-option-element.html#the-option-element">option</a></code> elements in
464: 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
465: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
466: true, or the only <code><a href="the-option-element.html#the-option-element">option</a></code> element in the
467: <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
468: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
469: true is the <a href="#placeholder-label-option">placeholder label option</a>, then the element
1.192 sruby 470: is <a href="textFieldSelection.html#suffering-from-being-missing">suffering from being missing</a>.</p>
1.1 mike 471:
1.85 mike 472: </div>
473:
474: <div class="impl">
1.1 mike 475:
476: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
477: 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
478: should allow the user to pick an <code><a href="the-option-element.html#the-option-element">option</a></code> element in its
479: <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a> that
480: is itself not <a href="the-option-element.html#concept-option-disabled" title="concept-option-disabled">disabled</a>.
481: 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
482: through unfocusing the element after changing its value, or through
1.192 sruby 483: a <a href="textFieldSelection.html#using-the-option-element-to-define-a-command" title="option-command">menu command</a>, or through any
1.1 mike 484: other mechanism), and before the relevant user interaction event
1.159 sruby 485: <!-- interaction event spec point --> is queued (e.g. before the
1.1 mike 486: <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event), the user agent must
487: set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the
1.192 sruby 488: picked <code><a href="the-option-element.html#the-option-element">option</a></code> element to true and then <a href="textFieldSelection.html#queue-a-task">queue a
489: task</a> to <a href="textFieldSelection.html#fire-a-simple-event">fire a simple event</a> that bubbles named
1.1 mike 490: <code title="event-change">change</code> at the <code><a href="#the-select-element">select</a></code>
1.192 sruby 491: element, using the <a href="textFieldSelection.html#user-interaction-task-source">user interaction task source</a> as the
1.1 mike 492: task source.</p>
493:
494: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
495: attribute is absent, whenever an <code><a href="the-option-element.html#the-option-element">option</a></code> element in the
496: <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
497: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
498: 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
499: 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
500: agent must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
501: 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
502: false.</p>
503:
504: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
505: attribute is absent and the element's <a href="#concept-select-size" title="concept-select-size">display size</a> is greater than 1,
506: then the user agent should also allow the user to request that the
507: <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
508: any, be unselected. Upon this request being conveyed to the user
1.159 sruby 509: agent, and before the relevant user interaction event <!--
510: 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 511: <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of
1.192 sruby 512: that <code><a href="the-option-element.html#the-option-element">option</a></code> element to false and then <a href="textFieldSelection.html#queue-a-task">queue a
513: task</a> to <a href="textFieldSelection.html#fire-a-simple-event">fire a simple event</a> that bubbles named
1.1 mike 514: <code title="event-change">change</code> at the <code><a href="#the-select-element">select</a></code>
1.192 sruby 515: element, using the <a href="textFieldSelection.html#user-interaction-task-source">user interaction task source</a> as the
1.1 mike 516: task source.</p>
517:
518: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
519: attribute is absent and the element's <a href="#concept-select-size" title="concept-select-size">display size</a> is 1, then whenever
520: 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>
521: element's <a href="#concept-select-option-list" title="concept-select-option-list">list of
522: options</a> that have their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to true,
523: the user agent must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of the first
524: <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
525: <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
526: true.</p>
527:
528: <p>If the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
529: 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
530: 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
531: <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
532: themselves not <a href="the-option-element.html#concept-option-disabled" title="concept-option-disabled">disabled</a>
1.192 sruby 533: (either through a click, or through a <a href="textFieldSelection.html#using-the-option-element-to-define-a-command" title="option-command">menu command</a>, or any other mechanism).
1.1 mike 534: Upon the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of one or
535: more <code><a href="the-option-element.html#the-option-element">option</a></code> elements being changed by the user, and
1.159 sruby 536: before the relevant user interaction event <!-- interaction event
537: 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
1.192 sruby 538: <a href="textFieldSelection.html#queue-a-task">queue a task</a> to <a href="textFieldSelection.html#fire-a-simple-event">fire a simple event</a> that
1.1 mike 539: bubbles named <code title="event-change">change</code> at the
1.192 sruby 540: <code><a href="#the-select-element">select</a></code> element, using the <a href="textFieldSelection.html#user-interaction-task-source">user interaction task
1.1 mike 541: source</a> as the task source.</p>
542:
1.192 sruby 543: <p>The <a href="textFieldSelection.html#concept-form-reset-control" title="concept-form-reset-control">reset
1.1 mike 544: algorithm</a> for <code><a href="#the-select-element">select</a></code> elements is to go through
545: 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
546: their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a>
547: 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
548: otherwise.</p>
549:
1.85 mike 550: </div>
551:
552: <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 553: explicitly associate the <code><a href="#the-select-element">select</a></code> element with its
554: <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>
555: 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
556: the control non-interactive and to prevent its value from being
557: submitted. The <code title="attr-fe-autofocus"><a href="attributes-common-to-form-controls.html#attr-fe-autofocus">autofocus</a></code>
1.85 mike 558: attribute controls focus.</p>
559:
1.159 sruby 560: <!--TOPIC:DOM APIs-->
1.85 mike 561: <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 562:
563: <dd>
564:
565: <p>Returns "<code title="">select-multiple</code>" if the element
566: has a <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code>
567: attribute, and "<code title="">select-one</code>"
568: otherwise.</p>
569:
570: </dd>
571:
572: <dt><var title="">select</var> . <code title="dom-select-options"><a href="#dom-select-options">options</a></code></dt>
573:
574: <dd>
575:
1.159 sruby 576: <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 577:
578: </dd>
579:
580: <dt><var title="">select</var> . <code title="dom-select-length"><a href="#dom-select-length">length</a></code> [ = <var title="">value</var> ]</dt>
581: <dd>
582: <p>Returns the number of elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>.</p>
583: <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>
584: <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>
585: </dd>
586:
587: <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>
588: <dt><var title="">select</var>[<var title="">index</var>]</dt>
589: <dd>
590: <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>
591: </dd>
592:
593: <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>
594: <dd>
1.192 sruby 595: <p>Returns the item with <a href="infrastructure.html#concept-id" title="concept-id">ID</a> or <code title="attr-option-name"><a href="textFieldSelection.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 596: <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>
597: <p>Returns null if no element with that <a href="infrastructure.html#concept-id" title="concept-id">ID</a> could be found.</p>
598: </dd>
599:
600: <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>
601: <dd>
602: <p>Inserts <var title="">element</var> before the node given by <var title="">before</var>.</p>
603: <p>The <var title="">before</var> argument can be a number, in
604: which case <var title="">element</var> is inserted before the item
605: with that number, or an element from the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>, in
606: which case <var title="">element</var> is inserted before that
607: element.</p>
608: <p>If <var title="">before</var> is omitted, null, or a number out
609: of range, then <var title="">element</var> will be added at the
610: end of the list.</p>
611: <p>This method will throw a <code><a href="infrastructure.html#hierarchyrequesterror">HierarchyRequestError</a></code>
612: exception if <var title="">element</var> is an ancestor of the
613: element into which it is to be inserted.</p>
614: </dd>
615:
616: <dt><var title="">select</var> . <code title="dom-select-selectedOptions"><a href="#dom-select-selectedoptions">selectedOptions</a></code></dt>
617:
618: <dd>
619:
620: <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
621: selected.</p>
622:
623: </dd>
624:
625: <dt><var title="">select</var> . <code title="dom-select-selectedIndex"><a href="#dom-select-selectedindex">selectedIndex</a></code> [ = <var title="">value</var> ]</dt>
626:
627: <dd>
628:
629: <p>Returns the index of the first selected item, if any, or
630: −1 if there is no selected item.</p>
631:
632: <p>Can be set, to change the selection.</p>
633:
634: </dd>
635:
636: <dt><var title="">select</var> . <code title="dom-select-value"><a href="#dom-select-value">value</a></code> [ = <var title="">value</var> ]</dt>
637:
638: <dd>
639:
640: <p>Returns the <a href="attributes-common-to-form-controls.html#concept-fe-value" title="concept-fe-value">value</a> of the
641: first selected item, if any, or the empty string if there is no
642: selected item.</p>
643:
644: <p>Can be set, to change the selection.</p>
645:
646: </dd>
647:
648: </dl><div class="impl">
649:
650: <p>The <dfn id="dom-select-type" title="dom-select-type"><code>type</code></dfn> IDL
651: 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,
652: 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
653: present.</p>
654:
655: <p>The <dfn id="dom-select-options" title="dom-select-options"><code>options</code></dfn>
1.159 sruby 656: IDL attribute must return an <code><a href="common-dom-interfaces.html#htmloptionscollection-0">HTMLOptionsCollection</a></code>
1.1 mike 657: rooted at the <code><a href="#the-select-element">select</a></code> node, whose filter matches the
658: elements in the <a href="#concept-select-option-list" title="concept-select-option-list">list of
659: options</a>.</p>
660:
661: <p>The <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection is
662: also mirrored on the <code><a href="#htmlselectelement">HTMLSelectElement</a></code> object. The
663: <a href="infrastructure.html#supported-property-indices">supported property indices</a> at any instant are the
664: indices supported by the object returned by the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> attribute at that
665: instant.</p>
666:
667: <p>The <dfn id="dom-select-length" title="dom-select-length"><code>length</code></dfn> IDL
668: attribute must return the number of nodes <a href="infrastructure.html#represented-by-the-collection" title="represented
669: by the collection">represented</a> by the <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection. On setting, it
670: 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>
671:
672: <p>The <dfn id="dom-select-item" title="dom-select-item"><code>item(<var title="">index</var>)</code></dfn> method must return the value
673: 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
674: with the same argument.</p>
675:
676: <p>The <dfn id="dom-select-nameditem" title="dom-select-namedItem"><code>namedItem(<var title="">name</var>)</code></dfn> method must return the value
677: 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
678: with the same argument.</p>
679:
680: <p>When the user agent is to <dfn id="dom-htmlselectelement-setter" title="dom-HTMLSelectElement-setter">set the value of a new indexed
681: property</dfn> for a given property index <var title="">index</var>
682: 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
683: indexed property</a> with the given property index <var title="">index</var> to the new value <var title="">value</var> on the
684: <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection.</p>
685:
686: <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
687: act like their namesake methods on that same <code title="dom-select-options"><a href="#dom-select-options">options</a></code> collection.</p>
688:
689: <p>The <dfn id="dom-select-selectedoptions" title="dom-select-selectedOptions"><code>selectedOptions</code></dfn>
690: IDL attribute must return an <code><a href="infrastructure.html#htmlcollection">HTMLCollection</a></code> rooted at
691: the <code><a href="#the-select-element">select</a></code> node, whose filter matches the elements in
692: the <a href="#concept-select-option-list" title="concept-select-option-list">list of options</a>
693: that have their <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
694: true.</p>
695:
696: <p>The <dfn id="dom-select-selectedindex" title="dom-select-selectedIndex"><code>selectedIndex</code></dfn>
697: 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
698: <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
699: <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,
700: if any. If there isn't one, then it must return −1.</p>
701:
702: <p>On setting, the <code title="dom-select-selectedIndex"><a href="#dom-select-selectedindex">selectedIndex</a></code> attribute must
703: set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
704: <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,
705: 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
706: <a href="the-option-element.html#concept-option-index" title="concept-option-index">index</a> is the given new
707: value, if any, must have its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
708: true.</p>
709:
710: <p>The <dfn id="dom-select-value" title="dom-select-value"><code>value</code></dfn> IDL
711: attribute, on getting, must return the <a href="the-option-element.html#concept-option-value" title="concept-option-value">value</a> of the first
712: <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
713: <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,
714: if any. If there isn't one, then it must return the empty
715: string.</p>
716:
717: <p>On setting, the <code title="dom-select-value"><a href="#dom-select-value">value</a></code>
718: attribute must set the <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> of all the
719: <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,
720: 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
721: <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
722: value, if any, must have its <a href="the-option-element.html#concept-option-selectedness" title="concept-option-selectedness">selectedness</a> set to
723: true.</p>
724:
725: <p>The <dfn id="dom-select-multiple" title="dom-select-multiple"><code>multiple</code></dfn>,
726: <dfn id="dom-select-required" title="dom-select-required"><code>required</code></dfn>, and
727: <dfn id="dom-select-size" title="dom-select-size"><code>size</code></dfn> IDL attributes
728: must <a href="common-dom-interfaces.html#reflect">reflect</a> the respective content attributes of the
729: same name. The <code title="dom-select-size"><a href="#dom-select-size">size</a></code> IDL
1.159 sruby 730: attribute has a default value of zero.</p> <!-- see bug 12288 for
731: compat reasons why .size allows zero (it's not limited to values
732: greater than zero) even though that value really makes no sense -->
1.4 mike 733:
1.1 mike 734: <p class="note">For historical reasons, the default value of the
735: <code title="dom-select-size"><a href="#dom-select-size">size</a></code> IDL attribute does not
736: 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
737: or 4 depending on the presence of the <code title="attr-select-multiple"><a href="#attr-select-multiple">multiple</a></code> attribute.</p>
738:
1.192 sruby 739: <p>The <code title="dom-cva-willValidate"><a href="textFieldSelection.html#dom-cva-willvalidate">willValidate</a></code>, <code title="dom-cva-validity"><a href="textFieldSelection.html#dom-cva-validity">validity</a></code>, and <code title="dom-cva-validationMessage"><a href="textFieldSelection.html#dom-cva-validationmessage">validationMessage</a></code> IDL
740: attributes, and the <code title="dom-cva-checkValidity"><a href="textFieldSelection.html#dom-cva-checkvalidity">checkValidity()</a></code> and <code title="dom-cva-setCustomValidity"><a href="textFieldSelection.html#dom-cva-setcustomvalidity">setCustomValidity()</a></code>
741: methods, are part of the <a href="textFieldSelection.html#the-constraint-validation-api">constraint validation API</a>. The
1.188 sruby 742: <code title="dom-lfe-labels"><a href="the-label-element.html#dom-lfe-labels">labels</a></code> IDL attribute provides a
743: 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 744: element's forms API.</p>
745:
1.85 mike 746: </div>
1.159 sruby 747: <!--TOPIC:HTML-->
1.85 mike 748:
749: <div class="example">
1.1 mike 750:
751: <p>The following example shows how a <code><a href="#the-select-element">select</a></code> element
752: can be used to offer the user with a set of options from which the
753: user can select a single option. The default option is
754: preselected.</p>
755:
756: <pre><p>
757: <label for="unittype">Select unit type:</label>
758: <select id="unittype" name="unittype">
759: <option value="1"> Miner </option>
760: <option value="2"> Puffer </option>
761: <option value="3" selected> Snipey </option>
762: <option value="4"> Max </option>
763: <option value="5"> Firebot </option>
764: </select>
765: </p></pre>
766:
767: <p>When there is no default option, a placeholder can be used
768: instead:</p>
769:
770: <pre><select name="unittype" <strong>required</strong>>
771: <strong><option value=""> Select unit type </option></strong>
772: <option value="1"> Miner </option>
773: <option value="2"> Puffer </option>
774: <option value="3"> Snipey </option>
775: <option value="4"> Max </option>
776: <option value="5"> Firebot </option>
777: </select></pre>
778:
1.85 mike 779: </div>
780:
781: <div class="example">
1.1 mike 782:
783: <p>Here, the user is offered a set of options from which he can
784: select any number. By default, all five options are selected.</p>
785:
786: <pre><p>
787: <label for="allowedunits">Select unit types to enable on this map:</label>
788: <select id="allowedunits" name="allowedunits" multiple>
789: <option value="1" selected> Miner </option>
790: <option value="2" selected> Puffer </option>
791: <option value="3" selected> Snipey </option>
792: <option value="4" selected> Max </option>
793: <option value="5" selected> Firebot </option>
794: </select>
795: </p></pre>
796:
1.85 mike 797: </div>
798:
799: <div class="example">
1.1 mike 800:
801: <p>Sometimes, a user has to select one or more items. This example
802: shows such an interface.</p>
803:
804: <pre><p>Select the songs from that you would like on your Act II Mix Tape:</p>
805: <select multiple required name="act2">
806: <option value="s1">It Sucks to Be Me (Reprise)
807: <option value="s2">There is Life Outside Your Apartment
808: <option value="s3">The More You Ruv Someone
809: <option value="s4">Schadenfreude
810: <option value="s5">I Wish I Could Go Back to College
811: <option value="s6">The Money Song
812: <option value="s7">School for Monsters
813: <option value="s8">The Money Song (Reprise)
814: <option value="s9">There's a Fine, Fine Line (Reprise)
815: <option value="s10">What Do You Do With a B.A. in English? (Reprise)
816: <option value="s11">For Now
817: </select></pre>
818:
1.85 mike 819: </div>
820:
821:
822:
823: </body></html>
Webmaster
![[BACK]](/https/dev.w3.org/cvsweb/icons/back.gif){kind=icon}
Return to the-select-element.html CVS log ![[TXT]](/https/dev.w3.org/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/https/dev.w3.org/cvsweb/icons/dir.gif){kind=icon}
Up to [Public] / html5 / spec