例 1.6（replaceChildIEFF.html）
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
</HEAD>
<BODY>
<script>
var contain = document.getElementById("contain");
var b = document.getElementById("b");
var p = document.createElement("p");/*这句话后创建了一个*/
p.innerHTML="pText";
/*
Node.replaceChild() (Method)
A means of replacing child objects with new nodes and discarding the old ones.
The new node must be created using the createElement method.
Property/method value type: Node object
JavaScript syntax: - myNode.replaceChild(newNode, oldNode)
Argument list: newNode The node to be placed into the hierarchy
oldNode The node to be replaced
*/
contain.replaceChild( p , b );
</script>
</BODY>
</HTML>
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