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HTML code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Ajax¼¼Êõ--Óû§ÃûУÑéµÄʵÀý</title>
<script type="text/javascript" src="jslib/verifyown.js"></script>
</head>
<body>
Ajax¼¼Êõ--Óû§ÃûУÑéµÄʵÀý <br/>
ÇëÊäÈëÓû§Ãû£º<input type="text" id="userName" />
<input type="button" value="УÑé" onclick="verifyown()"/>
<div id="result"></div>
</body>
</html>

JScript code:




function verifyown(){

var userName = document.getElementById("userName").value;

var xmlhttp;

if(window.XmlHttpRequest){
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xmlhttp = new XMLHttpRequest();
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if(xmlhttp.overrideMimeType){
xmlhttp.overrideMimeType("text/xml");
}

} else if(window.ActiveXObject){
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