Annotation of html5/spec/the-a-element.html, revision 1.215
1.204 sruby 1: <!DOCTYPE html><html lang="en-US-x-Hixie"><meta charset="utf-8"><title>4.6.1 The a 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';
1.206 sruby 87: src: url('fonts/Essays1743.ttf');
1.200 sruby 88: }
89: @font-face {
90: font-family: 'Essays1743';
91: font-weight: bold;
1.206 sruby 92: src: url('fonts/Essays1743-Bold.ttf');
1.200 sruby 93: }
94: @font-face {
95: font-family: 'Essays1743';
96: font-style: italic;
1.206 sruby 97: src: url('fonts/Essays1743-Italic.ttf');
1.200 sruby 98: }
99: @font-face {
100: font-family: 'Essays1743';
101: font-style: italic;
102: font-weight: bold;
1.206 sruby 103: src: url('fonts/Essays1743-BoldItalic.ttf');
1.200 sruby 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:
1.182 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; }
209: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
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; }
214: .warning { color: red; background: transparent; }
215: .note, .warning { font-weight: bolder; font-style: italic; }
216: .note em, .warning em, .note i, .warning i { font-style: normal; }
217: p.note, div.note { padding: 0.5em 2em; }
218: span.note { padding: 0 2em; }
219: .note p:first-child, .warning p:first-child { margin-top: 0; }
220: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
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; }
226: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
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; }
232: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
233: .element {
234: background: #EEEEFF;
235: color: black;
236: margin: 0 0 1em 0.15em;
237: padding: 0 1em 0.25em 0.75em;
238: border-left: solid #9999FF 0.25em;
239: position: relative;
240: z-index: 1;
241: }
242: .element:before {
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:
1.207 sruby 303: </style><link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet" type="text/css"><script>
1.1 mike 304: function getCookie(name) {
305: var params = location.search.substr(1).split("&");
306: for (var index = 0; index < params.length; index++) {
307: if (params[index] == name)
308: return "1";
309: var data = params[index].split("=");
310: if (data[0] == name)
311: return unescape(data[1]);
312: }
313: var cookies = document.cookie.split("; ");
314: for (var index = 0; index < cookies.length; index++) {
315: var data = cookies[index].split("=");
316: if (data[0] == name)
317: return unescape(data[1]);
318: }
319: return null;
320: }
1.204 sruby 321: </script><link href="text-level-semantics.html" rel="prev" title="4.6 Text-level semantics">
322: <link href="index.html#contents" rel="contents" title="Table of contents">
323: <link href="the-em-element.html" rel="next" title="4.6.2 The em element">
324: <body class="split chapter" onload="fixBrokenLink();"><div class="head" id="head">
1.1 mike 325: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
326:
327: <h1>HTML5</h1>
1.197 sruby 328: <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>
1.215 ! sruby 329: <h2 class="no-num no-toc" id="editor's-draft-date-1-january-1970">Editor's Draft 21 November 2012</h2>
1.85 mike 330: </div>
1.200 sruby 331:
332:
1.204 sruby 333: <nav class="prev_next">
334: <a href="text-level-semantics.html">← 4.6 Text-level semantics</a> –
335: <a href="index.html#contents">Table of contents</a> –
336: <a href="the-em-element.html">4.6.2 The em element →</a>
337: </nav>
1.1 mike 338:
1.85 mike 339: <h4 id="the-a-element"><span class="secno">4.6.1 </span>The <dfn><code>a</code></dfn> element</h4>
340:
341: <dl class="element"><dt><a href="element-definitions.html#element-dfn-categories" title="element-dfn-categories">Categories</a>:</dt>
1.159 sruby 342: <dd><a href="content-models.html#flow-content-1">Flow content</a>.</dd>
1.179 sruby 343: <dd><a href="content-models.html#phrasing-content-1">Phrasing content</a>.</dd>
1.159 sruby 344: <dd><a href="content-models.html#interactive-content-0">Interactive content</a>.</dd>
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>
1.179 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>
1.159 sruby 349: <dd><a href="content-models.html#transparent">Transparent</a>, but there must be no <a href="content-models.html#interactive-content-0">interactive content</a> descendant.</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>
1.205 sruby 352: <dd><code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code></dd>
353: <dd><code title="attr-hyperlink-target"><a href="links.html#attr-hyperlink-target">target</a></code></dd>
1.159 sruby 354: <!--DOWNLOAD--><!--PING-->
1.205 sruby 355: <dd><code title="attr-hyperlink-rel"><a href="links.html#attr-hyperlink-rel">rel</a></code></dd>
356: <dd><code title="attr-hyperlink-media"><a href="links.html#attr-hyperlink-media">media</a></code></dd>
357: <dd><code title="attr-hyperlink-hreflang"><a href="links.html#attr-hyperlink-hreflang">hreflang</a></code></dd>
358: <dd><code title="attr-hyperlink-type"><a href="links.html#attr-hyperlink-type">type</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="htmlanchorelement">HTMLAnchorElement</dfn> : <a href="elements.html#htmlelement">HTMLElement</a> {
362: stringifier attribute DOMString <a href="#dom-a-href" title="dom-a-href">href</a>;
363: attribute DOMString <a href="#dom-a-target" title="dom-a-target">target</a>;
1.159 sruby 364: <!--DOWNLOAD--><!--PING-->
1.1 mike 365: attribute DOMString <a href="#dom-a-rel" title="dom-a-rel">rel</a>;
366: readonly attribute <a href="infrastructure.html#domtokenlist">DOMTokenList</a> <a href="#dom-a-rellist" title="dom-a-relList">relList</a>;
367: attribute DOMString <a href="#dom-a-media" title="dom-a-media">media</a>;
368: attribute DOMString <a href="#dom-a-hreflang" title="dom-a-hreflang">hreflang</a>;
369: attribute DOMString <a href="#dom-a-type" title="dom-a-type">type</a>;
370:
371: attribute DOMString <a href="#dom-a-text" title="dom-a-text">text</a>;
372:
373: // <a href="urls.html#url-decomposition-idl-attributes">URL decomposition IDL attributes</a>
374: attribute DOMString <a href="#dom-a-protocol" title="dom-a-protocol">protocol</a>;
375: attribute DOMString <a href="#dom-a-host" title="dom-a-host">host</a>;
376: attribute DOMString <a href="#dom-a-hostname" title="dom-a-hostname">hostname</a>;
377: attribute DOMString <a href="#dom-a-port" title="dom-a-port">port</a>;
378: attribute DOMString <a href="#dom-a-pathname" title="dom-a-pathname">pathname</a>;
379: attribute DOMString <a href="#dom-a-search" title="dom-a-search">search</a>;
380: attribute DOMString <a href="#dom-a-hash" title="dom-a-hash">hash</a>;
381: };</pre>
382: </dd>
1.208 sruby 383: </dl><!--TOPIC:HTML--><p>If the <code><a href="#the-a-element">a</a></code> element has an <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code> attribute,
384: then it <a href="rendering.html#represents">represents</a> a <a href="links.html#hyperlink">hyperlink</a> (a hypertext anchor) labeled by its
385: contents.</p>
386:
387: <!-- v2: Eric Meyer requests the ability to nest links so that a big hyperlink, e.g. representing
388: a calendar event, can be clickable, while within it there are subareas that represent links to
389: distinct areas, e.g. a link to see photos of the event, or to edit the event, or some such. -->
390:
391: <p>If the <code><a href="#the-a-element">a</a></code> element has no <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code> attribute,
392: then the element <a href="rendering.html#represents">represents</a> a placeholder for where a link might otherwise have been
393: placed, if it had been relevant, consisting of just the element's contents.</p>
1.85 mike 394:
1.205 sruby 395: <p>The <code title="attr-hyperlink-target"><a href="links.html#attr-hyperlink-target">target</a></code>,
1.159 sruby 396: <!--DOWNLOAD--><!--PING-->
1.208 sruby 397: <code title="attr-hyperlink-rel"><a href="links.html#attr-hyperlink-rel">rel</a></code>,
398: <code title="attr-hyperlink-media"><a href="links.html#attr-hyperlink-media">media</a></code>,
399: <code title="attr-hyperlink-hreflang"><a href="links.html#attr-hyperlink-hreflang">hreflang</a></code>, and <code title="attr-hyperlink-type"><a href="links.html#attr-hyperlink-type">type</a></code> attributes must be omitted if the <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code> attribute is not present.</p>
1.85 mike 400:
1.159 sruby 401: <!--MD-->
1.85 mike 402:
403: <div class="example">
1.208 sruby 404:
405: <p>If a site uses a consistent navigation toolbar on every page, then the link that would
406: normally link to the page itself could be marked up using an <code><a href="#the-a-element">a</a></code> element:</p>
407:
1.1 mike 408: <pre><nav>
409: <ul>
410: <li> <a href="/">Home</a> </li>
411: <li> <a href="/news">News</a> </li>
412: <li> <a>Examples</a> </li>
413: <li> <a href="/legal">Legal</a> </li>
414: </ul>
415: </nav></pre>
1.208 sruby 416:
1.85 mike 417: </div>
418:
419: <div class="impl">
1.1 mike 420:
1.205 sruby 421: <p>The <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code>,
422: <code title="attr-hyperlink-target"><a href="links.html#attr-hyperlink-target">target</a></code>,
1.159 sruby 423: <!--DOWNLOAD--><!--PING-->
1.205 sruby 424: attributes affect what happens when users <a href="links.html#following-hyperlinks-0" title="following
1.1 mike 425: hyperlinks">follow hyperlinks</a>
1.159 sruby 426: <!--DOWNLOAD-->
1.1 mike 427: created using the <code><a href="#the-a-element">a</a></code> element. The
1.205 sruby 428: <code title="attr-hyperlink-rel"><a href="links.html#attr-hyperlink-rel">rel</a></code>, <code title="attr-hyperlink-media"><a href="links.html#attr-hyperlink-media">media</a></code>, <code title="attr-hyperlink-hreflang"><a href="links.html#attr-hyperlink-hreflang">hreflang</a></code>, and <code title="attr-hyperlink-type"><a href="links.html#attr-hyperlink-type">type</a></code> attributes may be used to
1.1 mike 429: indicate to the user the likely nature of the target resource before
430: the user follows the link.</p>
431:
1.208 sruby 432: <p>The <a href="content-models.html#activation-behavior">activation behavior</a> of <code><a href="#the-a-element">a</a></code> elements that create <a href="links.html#hyperlink" title="hyperlink">hyperlinks</a> is to run the following steps:</p>
1.1 mike 433:
1.205 sruby 434: <ol><li><p>If the algorithm is not <a href="browsers.html#allowed-to-show-a-pop-up">allowed to show a
1.1 mike 435: pop-up</a> and either the <code><a href="#the-a-element">a</a></code>
1.159 sruby 436: <!--DOWNLOAD-->
1.205 sruby 437: element's <code title="attr-hyperlink-target"><a href="links.html#attr-hyperlink-target">target</a></code>
438: attribute is present and applying <a href="browsers.html#the-rules-for-choosing-a-browsing-context-given-a-browsing-context-name">the rules for choosing a
1.1 mike 439: browsing context given a browsing context name</a>, using the
1.205 sruby 440: value of the <code title="attr-hyperlink-target"><a href="links.html#attr-hyperlink-target">target</a></code>
1.1 mike 441: attribute as the browsing context name, would result in there not
442: being a chosen browsing context, then throw an
443: <code><a href="infrastructure.html#invalidaccesserror">InvalidAccessError</a></code> exception and abort these
1.204 sruby 444: steps.</li>
1.1 mike 445:
1.208 sruby 446: <li><p>If the target of the <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event is an <code><a href="the-img-element.html#the-img-element">img</a></code>
447: element with an <code title="attr-img-ismap"><a href="the-img-element.html#attr-img-ismap">ismap</a></code> attribute specified, then server-side
448: image map processing must be performed, as follows:</p>
449:
450: <ol><!-- http://software.hixie.ch/utilities/js/live-dom-viewer/?%3C%21DOCTYPE%20html%3E%0A...%3Ca%20href%3D%22%23%22%3E%3Cimg%20ismap%20usemap%3D%22%23a%22%20src%3D/resources/images/smallcats%3E%3C/a%3E%0A%3Cmap%20name%3Da%3E%3Carea%20shape%3Drect%20coords%3D0%2C0%2C50%2C50%20href%3Db%3E%3C/map%3E --><li>If the <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event was a real pointing-device-triggered
451: <code title="event-click"><a href="infrastructure.html#event-click">click</a></code> event on the <code><a href="the-img-element.html#the-img-element">img</a></code> element, then let <var title="">x</var> be the distance in CSS pixels from the left edge of the image's left border,
452: if it has one, or the left edge of the image otherwise, to the location of the click, and let
453: <var title="">y</var> be the distance in CSS pixels from the top edge of the image's top
454: border, if it has one, or the top edge of the image otherwise, to the location of the click.
455: Otherwise, let <var title="">x</var> and <var title="">y</var> be zero.</li>
456:
457: <li>Let the <dfn id="hyperlink-suffix"><var>hyperlink suffix</var></dfn> be a U+003F QUESTION MARK character, the
458: value of <var title="">x</var> expressed as a base-ten integer using ASCII digits, a "," (U+002C) character, and the value of <var title="">y</var> expressed as a base-ten integer
459: using ASCII digits. ASCII digits are the characters in the range <a href="common-microsyntaxes.html#ascii-digits">ASCII digits</a>.</li>
1.1 mike 460:
461: </ol></li>
462:
1.205 sruby 463: <li><p>Finally, the user agent must <a href="links.html#following-hyperlinks-0" title="following
1.1 mike 464: hyperlinks">follow the hyperlink</a>
1.159 sruby 465: <!--DOWNLOAD-->
1.1 mike 466: created by the <code><a href="#the-a-element">a</a></code> element, as determined by
1.159 sruby 467: <!--DOWNLOAD-->
1.1 mike 468: any expressed user preference. If the steps above defined a
469: <var><a href="#hyperlink-suffix">hyperlink suffix</a></var>, then take that into account when
1.204 sruby 470: following or downloading the hyperlink.</li>
1.1 mike 471:
1.85 mike 472: </ol></div>
473:
1.159 sruby 474: <!--TOPIC:DOM APIs-->
1.85 mike 475: <dl class="domintro"><dt><var title="">a</var> . <code title="dom-a-text"><a href="#dom-a-text">text</a></code></dt>
1.1 mike 476:
477: <dd>
478:
479: <p>Same as <code><a href="infrastructure.html#textcontent">textContent</a></code>.</p>
480:
481: </dd>
482:
483: </dl><div class="impl">
484:
485: <p>The IDL attributes
486: <dfn id="dom-a-href" title="dom-a-href"><code>href</code></dfn>,
1.159 sruby 487: <!--DOWNLOAD--><!--PING-->
1.1 mike 488: <dfn id="dom-a-target" title="dom-a-target"><code>target</code></dfn>, <dfn id="dom-a-rel" title="dom-a-rel"><code>rel</code></dfn>, <dfn id="dom-a-media" title="dom-a-media"><code>media</code></dfn>, <dfn id="dom-a-hreflang" title="dom-a-hreflang"><code>hreflang</code></dfn>, and <dfn id="dom-a-type" title="dom-a-type"><code>type</code></dfn>, must
489: <a href="common-dom-interfaces.html#reflect">reflect</a> the respective content attributes of the same
490: name.</p>
491:
492: <p>The IDL attribute <dfn id="dom-a-rellist" title="dom-a-rellist"><code>relList</code></dfn> must
1.208 sruby 493: <a href="common-dom-interfaces.html#reflect">reflect</a> the <code title="attr-hyperlink-rel"><a href="links.html#attr-hyperlink-rel">rel</a></code> content attribute.</p>
1.1 mike 494:
1.208 sruby 495: <p>The <dfn id="dom-a-text" title="dom-a-text"><code>text</code></dfn> IDL attribute, on getting, must return the
496: same value as the <code><a href="infrastructure.html#textcontent">textContent</a></code> IDL attribute on the element, and on setting, must act
497: as if the <code><a href="infrastructure.html#textcontent">textContent</a></code> IDL attribute on the element had been set to the new value.</p>
1.1 mike 498:
499: <p>The <code><a href="#the-a-element">a</a></code> element also supports the complement of
1.208 sruby 500: <a href="urls.html#url-decomposition-idl-attributes">URL decomposition IDL attributes</a>, <dfn id="dom-a-protocol" title="dom-a-protocol"><code>protocol</code></dfn>, <dfn id="dom-a-host" title="dom-a-host"><code>host</code></dfn>, <dfn id="dom-a-port" title="dom-a-port"><code>port</code></dfn>, <dfn id="dom-a-hostname" title="dom-a-hostname"><code>hostname</code></dfn>, <dfn id="dom-a-pathname" title="dom-a-pathname"><code>pathname</code></dfn>, <dfn id="dom-a-search" title="dom-a-search"><code>search</code></dfn>, and <dfn id="dom-a-hash" title="dom-a-hash"><code>hash</code></dfn>. These must follow the rules given for <a href="urls.html#url-decomposition-idl-attributes">URL
501: decomposition IDL attributes</a>, with the <a href="urls.html#concept-uda-input" title="concept-uda-input">input</a> being
502: the result of <a href="urls.html#resolve-a-url" title="resolve a url">resolving</a> the element's <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code> attribute relative to the element, if there is such an
503: attribute and resolving it is successful, or the empty string otherwise; and the <a href="urls.html#concept-uda-setter" title="concept-uda-setter">common setter action</a> being the same as setting the element's
504: <code title="attr-hyperlink-href"><a href="links.html#attr-hyperlink-href">href</a></code> attribute to the new output value.</p>
1.1 mike 505:
1.85 mike 506: </div>
1.159 sruby 507: <!--TOPIC:HTML-->
1.85 mike 508:
509: <div class="example">
1.1 mike 510:
1.208 sruby 511: <p>The <code><a href="#the-a-element">a</a></code> element may be wrapped around entire paragraphs, lists, tables, and so
512: forth, even entire sections, so long as there is no interactive content within (e.g. buttons or
513: other links). This example shows how this can be used to make an entire advertising block into a
514: link:</p>
1.1 mike 515:
516: <pre><aside class="advertising">
517: <h1>Advertising</h1>
518: <a href="http://ad.example.com/?adid=1929&amp;pubid=1422">
519: <section>
520: <h1>Mellblomatic 9000!</h1>
521: <p>Turn all your widgets into mellbloms!</p>
522: <p>Only $9.99 plus shipping and handling.</p>
523: </section>
524: </a>
525: <a href="http://ad.example.com/?adid=375&amp;pubid=1422">
526: <section>
527: <h1>The Mellblom Browser</h1>
528: <p>Web browsing at the speed of light.</p>
529: <p>No other browser goes faster!</p>
530: </section>
531: </a>
532: </aside></pre>
533:
1.85 mike 534: </div>
535:
536:
1.204 sruby 537:
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