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<head>
        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
        <title>HTML DOM</title>
        <script type=text/javascript>
function Message()
        {
         var op=document.createElement("p");
         var oText=document.createTextNode("hello world!");
         op.appendChild(oText);
         document.body.appendChild(op);
        }
        </script>
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2,ɾ³ý½Úµã ·½·¨:getElementsByTagNameºÍremoveChild
<html>
<head>
        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
        <title>HTML DOM</title>
        <script type=text/javascript>
        function removeMessage()
        {
         var op=document.body.getElementsByTagName("p")[0];
         op.parentNode.removeChild(op);
        }
        </script>
</head>
<body onload="removeMessage();">
        <p>hello world!</p>
</body>
</html>
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