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var item1=document.getElementById("myList1").firstChild;
var item2=document.getElementById("myList2").firstChild;
item1.isEqualNode(item2);

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node.isEqualNode(node)

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node Node object ±ØÐ衣ϣÍûÓëÖ¸¶¨½Úµã±È½ÏµÄ½Úµã¡£

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DOM °æ±¾ Core Level 3 Node Object
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