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	<id>https://wiki.whatwg.org/index.php?action=history&amp;feed=atom&amp;title=Why_no_script_implements</id>
	<title>Why no script implements - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.whatwg.org/index.php?action=history&amp;feed=atom&amp;title=Why_no_script_implements"/>
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	<updated>2026-04-03T18:02:09Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=9227&amp;oldid=prev</id>
		<title>GPHemsley: added Category:Justifications using HotCat</title>
		<link rel="alternate" type="text/html" href="https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=9227&amp;oldid=prev"/>
		<updated>2013-07-09T14:34:40Z</updated>

		<summary type="html">&lt;p&gt;added &lt;a href=&quot;/wiki/Category:Justifications&quot; title=&quot;Category:Justifications&quot;&gt;Category:Justifications&lt;/a&gt; using &lt;a href=&quot;/index.php?title=Help:Gadget-HotCat&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Help:Gadget-HotCat (page does not exist)&quot;&gt;HotCat&lt;/a&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:34, 9 July 2013&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l7&quot;&gt;Line 7:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 7:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Basically, the warning about how imprecise and unreliable DOM feature testing can be (&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Basically, the warning about how imprecise and unreliable DOM feature testing can be (&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;http://dev.w3.org/html5/spec/Overview.html#dom-feature-strings ) would also apply to @implements.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;http://dev.w3.org/html5/spec/Overview.html#dom-feature-strings ) would also apply to @implements.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Justifications]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>GPHemsley</name></author>
	</entry>
	<entry>
		<id>https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=4189&amp;oldid=prev</id>
		<title>Ms2ger: moved WhyNoScriptImplements to Why no script implements:&amp;#32;WhyNoSpaces?</title>
		<link rel="alternate" type="text/html" href="https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=4189&amp;oldid=prev"/>
		<updated>2009-10-18T10:38:26Z</updated>

		<summary type="html">&lt;p&gt;moved &lt;a href=&quot;/wiki/WhyNoScriptImplements&quot; class=&quot;mw-redirect&quot; title=&quot;WhyNoScriptImplements&quot;&gt;WhyNoScriptImplements&lt;/a&gt; to &lt;a href=&quot;/wiki/Why_no_script_implements&quot; title=&quot;Why no script implements&quot;&gt;Why no script implements&lt;/a&gt;: WhyNoSpaces?&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:38, 18 October 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Ms2ger</name></author>
	</entry>
	<entry>
		<id>https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=4063&amp;oldid=prev</id>
		<title>JimJJewett: create page</title>
		<link rel="alternate" type="text/html" href="https://wiki.whatwg.org/index.php?title=Why_no_script_implements&amp;diff=4063&amp;oldid=prev"/>
		<updated>2009-09-14T19:02:01Z</updated>

		<summary type="html">&lt;p&gt;create page&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Adding the implements attribute to scripts would allow user agents to recognize the purpose of a script, and not bother to download scripts it already had in cache, or for which it provided a native implementation.&lt;br /&gt;
&lt;br /&gt;
Toby Inkster provided a pretty good argument for including it in http://lists.w3.org/Archives/Public/public-html/2009Sep/0538.html&lt;br /&gt;
&lt;br /&gt;
Simon Pieters provided the more subtle counterargument in http://lists.w3.org/Archives/Public/public-html/2009Sep/0540.html&lt;br /&gt;
&lt;br /&gt;
Basically, the warning about how imprecise and unreliable DOM feature testing can be (&lt;br /&gt;
http://dev.w3.org/html5/spec/Overview.html#dom-feature-strings ) would also apply to @implements.&lt;/div&gt;</summary>
		<author><name>JimJJewett</name></author>
	</entry>
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