CSS选择器的浏览器支持

作这个笔记，主要是为了记录一下有关方面的知识，以免自己遗忘。以下的内容基本上是从网络上摘下来的。

下面是一系列关于最流行的浏览器对CSS选择器和伪选择器的支持情况的测试。该测试包括从过去美好的CSS1到当前时髦的CSS3最基本的东西。如果你想了解关于CSS的选择器的更多内容，W3C官方文档绝对是个好地方!

CSS 1
↓ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
↑ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
E	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E F	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
:link	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:active	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:visited	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:first-line	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:first-letter	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E.classname	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E#id	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
.classname.classname	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

CSS 2.1
↓ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
↑ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
*	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E > F	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:first-child	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:hover	Partial ⁽¹⁾	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:focus	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E + F	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr~="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:before	No	No	Yes	Yes	Buggy ⁽⁴⁾	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:after	No	No	Yes	Yes	Buggy ⁽⁴⁾	Yes	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3
↓ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
↑ Selector / Browser →	IE6	IE7	IE8	IE9 preview	FF 3	FF 3.5	FF 3.6	Safari 3	Safari 4	Chrome 5 beta	Opera	Opera 10.5 beta
E ~ F	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr^="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr$="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr*="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E[attr\|="name"]	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:root	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:nth-of-type	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:nth-last-of-type	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:first-of-type	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:last-of-type	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:only-of-type	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:only-child	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:last-child	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:nth-child	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:nth-last-child	No	No	No	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:empty	No	No	No	Yes	Yes	Yes	Yes	Buggy ⁽²⁾	Yes ⁽³⁾	Yes	Yes	Yes
E:target	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:checked	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E::selection	No	No	No	Yes	No	No	No	Yes	Yes	Yes	Yes	Yes
E:enabled	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:disabled	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
E:not(s)	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

E[attr] 和IE8一样，值为空或写错的时候，无效；
E[attr~=val]这里唯一需要注意的是，属性的值，区分大小写；
E[attr|=val]IE7有一些大小写敏感的问题，但是通常可以正常使用；
:first-child IE7 会将一个注释或者文字节点当成first-child，而不是只有元素才是“子”元素。所以，如果在第一个子元素前有注释或文字，IE7会匹配之而不是去匹配第一个子元素。