1、className
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>跨浏览器获取className</title>
<script>
window.onload = function () {
var box = document.getElementById(‘box‘);
// if(box.getAttribute(‘className‘) == null) {
// alert(box.getAttribute(‘class‘));
// }else {
// alert(box.getAttribute(‘className‘));
// }
// alert(box.onclick);//均返回函数式
// alert(box.getAttribute(‘onclick‘));//ie7及以下返回函数式，非IE7及以下返回一个字符串abc()
}
</script>
</head>
<body>
<div id="box" class="pox" ddd="aaa" onclick="abc()"></div>
</body>
</html>
2、setAttribute
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>setAttribute</title>
<script>
window.onload = function () {
var box = document.getElementById(‘box‘);
// box.setAttribute(‘title‘,‘标题‘);//创建一个属性和属性值
//style,onclick设置属性在IE7无效
box.setAttribute(‘style‘,‘color:red‘)//非iE有效，但是在IE7无效,
}
</script>
</head>
<body>
<div id="box">额</div>
</body>
</html>
3、removeAttribute
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>removeAttribute</title>
<script>
window.onload = function () {
var box = document.getElementById(‘box‘);
//removeAttribute在IE6及以下无效
box.removeAttribute(‘style‘)//非iE6有效，但是在IE6及以下无效,
}
</script>
</head>
<body>
<div id="box" style="color: red">额</div>
</body>
</html>
原文：http://www.cnblogs.com/shenq/p/5505042.html