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Html5其它补充内容---第三天-我是小谷粒的博客

 6 years ago
source link: http://blog.51cto.com/13517854/2072857
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四、DOM扩展1、获取元素①document.getElementsByClassName('class')通过类名获取元素，以伪数组形式存在。②document.querySelector('selector')通过CSS选择器获取元素，符合匹配条件的第1个元素。③document.querySelectorAll('selector')通过CSS

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