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var xmlHttp=false;
function createXMLHttp(){
try{
xmlHttp=new XMLHttpRequest();
}catch(trymicrosoft){
try{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}catch(othermicrosoft){
try{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}catch(failed){
xmlHttp=false;
}
}
}
if(!xmlHttp){
alert("ÎÞ·¨´´½¨ XMLHttpRequest ¶ÔÏó£¡");
}
}
function Ajaxcheck(){
var num=document.myform.uname.value;//»ñµÃ±íµ¥µÄÊý¾Ý
var url="check.php?n="+num;
createXMLHttp();
xmlHttp.open("GET",url,true);//ÕâÀïµÄtrue´ú±íÊÇÒì²½ÇëÇó
xmlHttp.onreadystatechange=updatePage;
xmlHttp.send(null);
}
function updatePage(){
if(xmlHttp.readyState==4){
var response=xmlHttp.responseText;
if(response=="ok"){
document.myform.nameerr.value="¡Ì";
return true;
}else if(response=="no"){
document.myform.nameerr.value="×Óû§ÃûÒÑÕ¼ÓÃ";
return false;
}else{
document.myform.nameerr.value="·þÎñÆ÷³öÏÖÎÊÌâ";
return false;
}
}
}
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<%@ page language="java" contentType="text/html; charset=gb2312"
%>
<script>
function Save(){
xmlHttp=GetXmlHttpObject()
if(xmlHttp==nul ......
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<asp:ScriptManager ID="ScriptManager1" runat="server">
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