<style>
#div1 {
width:500px;
height:500px;
margin-left:100px;
border:solid 1px black;
}
#div2 {
width:300px;
height:300px;
margin-left:50px;
border:solid 1px red;
}
</style>
<body>
<div id="div1">
<div id="div2">
</div>
</div>
</body>
<script>
function ww() {
var obj = document.getElementById("div2");
par1 = obj.offsetParent;
alert(par1.offsetLeft);
}
ww();
</script>
在火狐和谷歌上面都是输出0，为什么不是50？谢谢
