本文实例讲述了JavaScript实现获取dom中class的方法。分享给大家供大家参考。具体实现方法如下：
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script>
function getClass(node,classname) {
if(node.getElementsByClassName) {
return node.getElementsByClassName(classname);
//如果存在该标签 就返回
} else {
var elems = node.getElementsByTagName(node),
defualt = [];
for (var i = 0; i < elems.length; i++) {
//遍历所有标签
if(elems[i].className.indexOf(classname) != -1) {
//查找相应类名的标签
defualt[defualt.length] = elems[i];
}
}
return defualt;
}
}
window.onload = function () {
var text = document.getElementById('text'),
cs = getClass(text,'cs');
document.write(cs.innerHTML='cs');
}
</script>
</head>
<body>
<div id="text"><div class="cs">textcss</div></div>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。
