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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript">
var http_request=false;
function testID (username){
if(window.XMLHttpRequest){//mozilla
http_request=new XMLHttpRequest();
}else{
http_request=new ActiveXObject("Microsoft.XMLHTTP");
}
http_request.onreadystatechange = processRequest;
http_request.open("POST","../testID",true);//ĬÈÏÎªÕæÊ±²»¼ÌÐøÖ´ÐÐÏÂÃæµÄ´úÂë
http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
http_request.send("username="+username);
}
// ´¦Àí·µ»ØÐÅÏ¢µÄº¯Êý
function processRequest() {
if (http_request.readyState == 4) {// Åж϶ÔÏó״̬
if (http_request.status == 200) {// ÐÅÏ¢ÒѾ³É¹¦·µ»Ø£¬¿ªÊ¼´¦ÀíÐÅÏ¢
alert(http_request.responseText);
} else {//Ò³Ãæ²»Õý³£
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