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js通过元素class名字获取元素集合的具体实现_javascript技巧

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Release： 2016-05-16 17:05:11
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复制代码 代码如下:

function getElementsByClassName(n) {
var classElements = [],allElements = document.getElementsByTagName('*');
for (var i=0; i{
if (allElements[i].className == n ) {
classElements[classElements.length] = allElements[i];
}
}
return classElements;
}
Related labels：
class名字 元素集合
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