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js specific implementation of obtaining element collection through element class name_javascript skills

WBOY
WBOYOriginal
2016-05-16 17:05:111481browse
复制代码 代码如下:

function getElementsByClassName(n) {
var classElements = [],allElements = document.getElementsByTagName('*');
for (var i=0; i< allElements.length; i )
{
if (allElements[i].className == n ) {
classElements[classElements.length] = allElements[i];
}
}
return classElements;
}
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