<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[1]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML</anchor> の <dfn><code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">source</anchor></code></dfn> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>は、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">媒体</anchor>の <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">URL</anchor> を表します。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="2" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[2]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">媒体要素</anchor> (<code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">video</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>や
<code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">audio</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>) で使われる場合と、
<code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">picture</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>で使われる場合は、
同名ですがまったく異なる用法となっています。</p><section><h1>歴史</h1><section><h1>媒体要素</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="3" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[3]</anchor-end>
<cite>Re: &lt;source&gt;</cite> (<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Ian Hickson &lt;ian@...&gt;</anchor> 著, <code>2007-10-13 01:00:01 +09:00</code> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/12020">http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/12020</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="4" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[4]</anchor-end> <cite xml:lang="en">(X)HTML5 Tracking</cite>
(<time>2009-10-18 16:45:18 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://html5.org/tools/web-apps-tracker?from=4156&amp;to=4157">http://html5.org/tools/web-apps-tracker?from=4156&amp;to=4157</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="5" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[5]</anchor-end> <cite><strong></strong>[<strong></strong>whatwg<strong></strong>]<strong></strong> &lt;INCLUDE&gt; and links with @rel=embed</cite>
( (<time>2011-07-28 08:43:45 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2011-July/032653.html">http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2011-July/032653.html</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="6" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[6]</anchor-end> <cite>IRC logs: freenode / #whatwg / 20120404</cite>
( (<time>2012-04-13 08:28:52 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://krijnhoetmer.nl/irc-logs/whatwg/20120404">http://krijnhoetmer.nl/irc-logs/whatwg/20120404</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="7" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[7]</anchor-end> <cite>IRC logs: freenode / #whatwg / 20120515</cite>
( (<time>2012-05-27 10:15:27 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://krijnhoetmer.nl/irc-logs/whatwg/20120515#l-2846">http://krijnhoetmer.nl/irc-logs/whatwg/20120515#l-2846</anchor-external></p></section><section><h1><code class="HTMLa" xml:lang="en">media</code> 属性</h1><refs xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:"><ul xmlns="http://www.w3.org/1999/xhtml"><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="8" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[8]</anchor-end> <cite><strong></strong>[<strong></strong>whatwg<strong></strong>]<strong></strong> &lt;source&gt; media attribute behavior, static or dynamic ?</cite>
( (<time>2012-06-30 08:25:56 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-June/036527.html">http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-June/036527.html</anchor-external></li><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="9" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[9]</anchor-end> <cite><strong></strong>[<strong></strong>whatwg<strong></strong>]<strong></strong> media attribute of &lt;source&gt; element, default behavior on getting the property.</cite>
( (<time>2012-06-30 08:25:56 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-June/036526.html">http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-June/036526.html</anchor-external></li></ul></refs><comment-p xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><code xmlns="http://www.w3.org/1999/xhtml" class="HTMLa" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">media</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">属性</anchor>の項も参照。</comment-p></section><section><h1><code class="HTMLe" xml:lang="en">picture</code> 要素</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="13" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[13]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Ian Hickson</anchor> は<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">媒体要素</anchor>における <code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">source</anchor></code>
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>を使った方法は失敗だったとして <code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">picture</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>と
<code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">source</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>の方法に強硬に反対していましたが、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">RICG</anchor> の提案する方法で <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Webブラウザー</anchor>開発者が合意したため、
結局 <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML Standard</anchor> に統合されることとなりました。
なお <code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">picture</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>における <code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">source</anchor></code>
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>は、<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">媒体要素</anchor>の <code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">source</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>とは同名ながらも利用方法も処理モデルもまったく異なる事実上別の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>となっています。</p><refs xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:"><ul xmlns="http://www.w3.org/1999/xhtml"><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="10" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[10]</anchor-end> <cite>Consider renaming source to something else · Issue #133 · ResponsiveImagesCG/picture-element</cite>
( (<time>2014-04-12 11:41:51 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://github.com/ResponsiveImagesCG/picture-element/issues/133">https://github.com/ResponsiveImagesCG/picture-element/issues/133</anchor-external></li><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="11" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[11]</anchor-end> <cite>IRC logs: freenode / #whatwg / 20140411</cite>
( (<time>2014-04-12 19:00:29 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://krijnhoetmer.nl/irc-logs/whatwg/20140411">http://krijnhoetmer.nl/irc-logs/whatwg/20140411</anchor-external></li><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="15" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[15]</anchor-end> <cite xml:lang="en">Web Applications 1.0 r8612 Remove the &lt;img&gt; stuff so that zcorpan can edit it instead. (this is purely editorial)</cite>
( (<time>2014-05-08 06:40:00 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://html5.org/r/8612">http://html5.org/r/8612</anchor-external></li><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="12" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[12]</anchor-end> <cite>Move the normative bits of the picture spec to the HTML spec. · 60e9bbd · ResponsiveImagesCG/picture-element</cite>
( (<time>2014-07-01 07:10:27 +09:00</time> 版))
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://github.com/ResponsiveImagesCG/picture-element/commit/60e9bbd1514d7c51dabab5fb750881e9f3e6a478#diff-36cd38f49b9afa08222c0dc9ebfe35ebR91">https://github.com/ResponsiveImagesCG/picture-element/commit/60e9bbd1514d7c51dabab5fb750881e9f3e6a478#diff-36cd38f49b9afa08222c0dc9ebfe35ebR91</anchor-external></li></ul></refs><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="16" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[16]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTML Standard</anchor> では暫定的に <dfn><code class="HTMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">imgcandidate</anchor></code></dfn>
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>と呼ばれていました <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="15" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;15</anchor-internal>, <anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="12" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;12</anchor-internal></src>。</p><comment-p xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="14" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[14]</anchor-end> <code xmlns="http://www.w3.org/1999/xhtml" class="HTMLa" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">srcset</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">属性</anchor>の項も参照。</comment-p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="17" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[17]</anchor-end> <cite xml:lang="en">Merge source element definitions · whatwg/html@d8f4b79</cite>
(<time>2016-04-26 20:47:18 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://github.com/whatwg/html/commit/d8f4b792dcaa6e205a7af2c074ee59cd838717d7">https://github.com/whatwg/html/commit/d8f4b792dcaa6e205a7af2c074ee59cd838717d7</anchor-external></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="18" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[18]</anchor-end> <cite xml:lang="en">Editorial: restructure the &lt;img&gt;-related sections</cite>
(<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">zcorpan</anchor>著, <time>2016-09-09 17:04:29 +09:00</time>)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://github.com/whatwg/html/commit/819272910bb1355bb3c45dc4976d71c1152eb723">https://github.com/whatwg/html/commit/819272910bb1355bb3c45dc4976d71c1152eb723</anchor-external></p><figure class="quote"><figcaption><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="19" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[19]</anchor-end> <cite>ARIB TR-B39</cite>
(<time>2016-07-25 17:01:00 +09:00</time>)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://www.arib.or.jp/english/html/overview/doc/4-TR-B39v1_0-1p4.pdf#page=188">http://www.arib.or.jp/english/html/overview/doc/4-TR-B39v1_0-1p4.pdf#page=188</anchor-external></p></figcaption><blockquote><p>受信機内蔵音を再生するためには、 audio タグの source 要素で type 属 性</p><p>に’audio.X-arib-romsound’を指定し、src に以下の URI を指定する。</p><p>romsound://&lt;sound_id&gt;</p></blockquote></figure></section></section></body></html>