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HTML5中对class属性的解释与规定

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Release： 2016-05-17 09:10:05
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每个元素都可以设置class属性。
如果一个元素属于多个class，用空格隔开，例如&a href=”http://www.htmlv.cn/”&html5&/a&。
设置有class属性值的元素，可以被css中的选择器调用，也可以在DOM中以getElementsByClassName()方法调用。

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