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JScript code:

var xmlHttp;
function creatReq() // ´´½¨xmlhttprequest,ajax¿ªÊ¼
{
if(window.XMLHttpRequest)
{
xmlHttp=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHttp");
}
}

function Work()
{
creatReq();
xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange = callback;
xmlHttp.send();
}

function callback()
{
if(xmlHttp.readyState==4)
{
if(xmlHttp.Status==200)
{
Dispaly();
alert("·þÎñ¶Ë·µ»Ø×´Ì¬" + xmlHttp.Status);
}
else
{
alert("·þÎñ¶Ë·µ»Ø×´Ì¬" + xmlHttp.Status);
}
}
else //ÇëÇó״̬»¹Ã»Óгɹ¦£¬Ò³ÃæµÈ´ý
{
document .getElementById ("main").innerHTML = "wait";
}
}

function Dispaly() //½ÓÊÜ·þÎñ¶Ë·µ»ØµÄÊý¾Ý£¬¶ÔÆä½øÐÐÏÔʾ
{
document .getElementById ("main").innerHTML =xmlHttp.responseText;
}




ÕâÑù´¥·¢ÔËÐУº <body onload="Work();">


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ÔÚIE7ÖС£xmlHttp.Status==³öÏÖµÄÊÇundefined.xmlHttp.Status==OK.
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ASP.NETÀïµÄÒ»¸öAJAXµÄ´íÎó


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ÎªÊ²Ã´Ò³ÃæÒ»¼ÓÉÏAjax¾Í³ö´í

²é¿´Ô´Îļþʱ³öÀ´µÄ
<script type="text/javascript">
// <![CDATA[
Sys.Application.initialize();
Sys.Application.add_init(function() {
    $create(Sys.UI._Upd ......

ajax È¡²»µ½Êý¾Ý

http://localhost:8080/xx/zz.do  ÏÔʾ outµÄ xml Êý¾Ý

xml.open("GET",arguments[0],true);// arguments[0]ÊÇ /xx/zz.do

xml.send();

alert(arguments[0]);//Õâ±ßÓÐ

x ......

ajaxºólocation.reload()ÎÞЧ

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function deleteCallBack(data)
{
if(data=="ɾ³ý³É¹¦")
{
alert(data);
location.reload();
}
else
{
alert(data);
}
}
²»Ìø×ª Ö»ÊÇÏÔʾalertÐÅÏ ......
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