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 send()
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 readyState
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<?xml version="1.0" encoding="utf-8" ?>
<response>
    <res>
       ¶Ô²»Æð,µÇ¼ʧ°Ü!
    </res>
</response>
 
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>AjaxÒì²½µ÷ÓÃ</title>
</head>
<body>
    <div style="background-color:Yellow" id="mytext">AjaxÒì²½µ÷ÓÃ
</div>
    <input type="button" value="¸üÐÂ" onclick="startHTTP()" />
</body>
</html>
<script type="text/javascript">
var XMLHttpReq;
function createHTTP(){
   //¸ù¾Ý²»Í¬µÄä¯ÀÀÆ÷´´½¨XMLHttpRequest
   if(window.ActiveXObject)//ieä¯ÀÀÆ÷
     {
        XMLHttpReq=new ActiveXObject("Microsoft.XMLHTTP");
     }
   else  if(window.XMLHttpRequest){//ÆäËûä¯ÀÀÆ÷
        XMLHttpReq=new XMLHttpRequest();
   }
}


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дһ¸öajax funciton

function Ajax(url)
{
var m_xmlReq=null;
if(window.ActiveXObject)
{
try
{
m_xmlReq = new ActiveXObject('Msxml2.XMLHTTP');
}
catch(e)
{
try{m_xmlReq = new ActiveXObject('Microsoft.XMLHTTP');}catch(e){}
}
}
else if(window.XMLHttpRequest ......

Ajax ¿Ø¼þʹÓñʼǣ¨Ò»£©¿Ø¼þ°²×°

½ñÌì³õ´Î½Ó´¥AjaxÄÇôÎÒ½«ÎÒµÄѧϰ¼Ç¼ÏÂÀ´£¬×î½ü¼ÇÐÔ²»Ì«ºÃ¡£±¸Íü°É
1¡¢Ê×ÏÈ´ÓÍøÂ·ÉÏÏÂÔØAjaxÀ©Õ¹°ü£¬VS2008Ö»ÊÇ´ø×Å×î»ù´¡µÄÈý¸öAjax¿Ø¼þ¡£ÄÇôÎÒÃÇÏÂÔØAjaxControlToolkit¿Ø¼þ£¬½«ÏÂÔØºóµÄѹËõ°ü½âѹ¡£ÕÒ³öAjaxControlToolkit.dllËùÔÚλÖá£
2¡¢ÔÚVS2008ÖУ¬ËæÒâÕÒÒ»¸öÑ¡Ï£¬»òÕߣ¬Ð½¨Ò»¸öÑ¡ÏÀ´·ÅÈëÎÒÃÇËù¼ÓÈëµÄ ......

ajax »ù±¾Ê¹Ó÷½·¨

$.ajax({
        type: "post",
        url: loginUrl,
        data: "username=" +uname + "&password=" +pwd,
        async: ......

Asp.net Ajax webserviceʱ¼ä´Á

  ÔÚʹÓÃAJAX½øÐгÌÐò¿ª·¢µÄʱºò£¬Ò»Ö±¶¼»áÃæ¶ÔÒ»¸ö»º´æµÄÎÊÌ⣡£¡
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   Æäʵ£¬ÕâÊÇÔÚAJAXµ ......
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