<div id="text">
<p>
parentNode
<div id="con"> 获取指点节点的父节点</div>
</p>
</div>
<script type="text/javascript">
var mynode= document.getElementById("con");
document.write(mynode.parentNode.nodeName);
</script>
id为"con",它的父节点为什么是DIV,而不是P呢?!