blocks|key|1474402|text|根据http://msdn.microsoft.com/en-us/library/cc288472(VS.85).aspx#html的说法，IE8将会有“强大的”HTML5支持。我还没有看到任何讨论“强有力的支持”到底需要什么的东西，但我可以说，是的，一些HTML5的东西将进入IE8。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1474403|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/cc288472(VS.85).aspx#html)^0|2|1T|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

According to <a href="http://msdn.microsoft.com/en-us/library/cc288472(VS.85).aspx#html" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/cc288472(VS.85).aspx#html</a>, IE8 will have "strong" HTML 5 support. I haven't seen anything discussing exactly what "strong support" entails, but I can say that yes, some HTML5 stuff is going to make it into IE8.

blocks|key|1474508|text|IE8+beta+2支持来自HTML5的两个API：cross-document+messaging和non-SQL+storage。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1474509|IE8+beta+2没有实现HTML5解析算法或新元素(不支持<canvas>或<video>+)。|style|CODE|1474510|还有一些错误修复可以让IE8更好地与HTML5保持一致。|1474511|entityMap|0|LINK|mutability|MUTABLE|url|http://www.whatwg.org/specs/web-apps/current-work/#crossDocumentMessages|1|http://www.whatwg.org/specs/web-apps/current-work/#storage^0|Q|O|0|1F|F|1|0|V|8|14|7|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]|$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@$A|11|B|12|F|G]|$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|15|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]]]

IE8 beta 2 supports two APIs from HTML5: <a href="http://www.whatwg.org/specs/web-apps/current-work/#crossDocumentMessages" rel="noreferrer">cross-document messaging</a> and <a href="http://www.whatwg.org/specs/web-apps/current-work/#storage" rel="noreferrer">non-SQL storage</a>.

IE8 beta 2 doesn’t implement the HTML5 parsing algorithm or the new elements (no <code>&lt;canvas&gt;</code> or <code>&lt;video&gt;</code> support).

There are also bug fixes that align IE8 better with HTML5.

blocks|key|1689550|text|还支持HTML5+hashchange+event和ononline,+offline+event|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1689551|entityMap|0|LINK|mutability|MUTABLE|url|http://www.whatwg.org/specs/web-apps/current-work/#handler-onhashchange|1|http://www.whatwg.org/specs/web-apps/current-work/#dom-navigator-online^0|9|G|0|Q|N|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Also are supported HTML5 <a href="http://www.whatwg.org/specs/web-apps/current-work/#handler-onhashchange" rel="noreferrer">hashchange event</a> and <a href="http://www.whatwg.org/specs/web-apps/current-work/#dom-navigator-online" rel="noreferrer">ononline, offline event</a>

blocks|key|1689630|text|您可以使用this+IE+HTML5+shim+script为HTML5中的新语义元素(如<article>+)获得基本级别的支持。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1689631|entityMap|0|LINK|mutability|MUTABLE|url|http://remysharp.com/2009/01/07/html5-enabling-script/^0|19|9|5|P|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You can use <a href="http://remysharp.com/2009/01/07/html5-enabling-script/" rel="noreferrer">this IE HTML5 shim script</a> to gain a basic level of support for the new semantic elements in HTML5 such as <code>&lt;article&gt;</code>.

blocks|key|1474663|text|对于提供IE+HTML5渲染功能，Modernizr也是一个很好的选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1474664|entityMap|0|LINK|mutability|MUTABLE|url|http://www.modernizr.com/^0|H|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://www.modernizr.com/" rel="noreferrer">Modernizr</a> is also a great option for giving IE HTML5 rendering capabilities.

blocks|key|1474755|text|你可以在这里阅读更多关于IE8和HTML5支持的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1474756|http://blogs.msdn.com/giorgio/archive/2009/11/29/ie8-and-html-5.aspx|offset|length|1474757|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1W|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

You can read more about IE8 and HTML 5 support here:

<a href="http://blogs.msdn.com/giorgio/archive/2009/11/29/ie8-and-html-5.aspx" rel="nofollow noreferrer">http://blogs.msdn.com/giorgio/archive/2009/11/29/ie8-and-html-5.aspx</a>

blocks|key|1689850|text|HTML5仍处于规范草案中(并将持续很长一段时间)。为什么要麻烦呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1689851|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

HTML5 is still in draft spec (and will be for a loooong time). Why bother?

blocks|key|1474886|text|您可以通过在头部中包含此JavaScript来使HTML5标记在IE8中工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1474887|<script+type="text/javascript">
+document.createElement('header');
+document.createElement('nav');
+document.createElement('menu');
+document.createElement('section');
+document.createElement('article');
+document.createElement('aside');
+document.createElement('footer');
</script>|code-block|syntax|javascript|1474888|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can get HTML5 tags working in IE8 by including this JavaScript in the head.

<pre><code>&lt;script type="text/javascript"&gt;
 document.createElement('header');
 document.createElement('nav');
 document.createElement('menu');
 document.createElement('section');
 document.createElement('article');
 document.createElement('aside');
 document.createElement('footer');
&lt;/script&gt;
</code></pre>

blocks|key|1689942|text|它是否支持|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1689943|<!DOCTYPE+html>|code-block|syntax|javascript|1689944|是的，确实如此。|1689945|也许一个更好的问题是IE8支持哪些现代网络功能。最适合回答这个问题的地方是caniuse.com、html5test.com和browserscope.org。|offset|length|1689946|HTML5对不同的人意味着很多不同的东西。如今，它意味着超文本标记语言、CSS和JavaScript功能。这个术语正在变得有点“Web2.0”-like。|1689947|entityMap|0|LINK|mutability|MUTABLE|url|http://caniuse.com/|1|http://html5test.com/|2|http://browserscope.org/^0|0|0|0|11|B|0|1D|D|1|1R|G|2|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|13|8|@]|9|@$K|14|L|15|1|16]|$K|17|L|18|1|19]|$K|1A|L|1B|1|1C]]|A|$]]|$1|M|3|N|5|6|7|1D|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]|W|$5|R|S|T|A|$U|X]]|Y|$5|R|S|T|A|$U|Z]]]]

Does it support 

<pre><code>&lt;!DOCTYPE html&gt;
</code></pre>

Yes it does.

Perhaps a better question is what modern web features IE8 supports. Some of the best places to answer that are <a href="http://caniuse.com/" rel="noreferrer">caniuse.com</a>, <a href="http://html5test.com/" rel="noreferrer">html5test.com</a>, and <a href="http://browserscope.org" rel="noreferrer">browserscope.org</a>.

HTML5 means a lot of different things to different people. These days, it means HTML, CSS, and JavaScript functionality. The term is becoming a bit "Web 2.0"-like.

blocks|key|1690122|text|这里的其他一些答案是关于向IE8和其他浏览器添加HTML5功能。它们被称为Polyfills，我最喜欢的地方是here。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1690123|entityMap|0|LINK|mutability|MUTABLE|url|http://remysharp.com/2010/10/08/what-is-a-polyfill/|1|https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills^0|11|9|0|1J|4|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Some of the other answers here are about adding HTML5 capabilities to IE8 and other browsers. These are called <a href="http://remysharp.com/2010/10/08/what-is-a-polyfill/" rel="nofollow">Polyfills</a> and my favourite place for finding those is <a href="https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills" rel="nofollow">here</a>.

blocks|key|1475167|text|您可以使用它来使IE8理解/支持基本的HTML5标记。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1475168||code-block|syntax|javascript|1475169|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use this to make IE8 understand/support basic HTML5 tags.

<pre><code>&lt;!--[if lt IE 9 ]&gt; 
 &lt;script type="text/javascript"&gt;
 var html5Elem = ['header', 'nav', 'menu', 'section', 'article', 'aside', 'footer'];
 for (var i = 0; i &lt; html5Elem.length; i++){
 document.createElement(html5Elem[i]);
 }
 &lt;/script&gt;
&lt;![endif]--&gt;
</code></pre>

问Internet Explorer 8是否支持HTML 5？
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问Internet Explorer 8是否支持HTML 5？
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