Ajax»ñÈ¡ºǫ́Êý¾Ý

//ajax »ñÈ¡Êý¾Ý
//½Å±¾
var showResp=0;
function GetXmlHttpObject(handler)
{
var objXmlHttp = null;
if (document.all)//!window.XMLHttpRequest
{
// ´´½¨IEÖеÄXMLHttpRequest¶ÔÏó“XMLHTTP”
var clsids = ["Msxml2.XMLHTTP.6.0","Msxml2.XMLHTTP.5.0","Msxml2.XMLHTTP.4.0","Msxml2.XMLHTTP.3.0",
"Msxml2.XMLHTTP.2.6","Microsoft.XMLHTTP.1.0",
"Microsoft.XMLHTTP.1","Microsoft.XMLHTTP"];
for(var i=0; i<clsids.length && objXmlHttp == null; i++) {
objXmlHttp = new ActiveXObject(clsids[i]);
}
//Èç¹ûobjXmlHttp²»Îªnull£¬É趨ÆäÖ´Ðгɹ¦Ê±µÄ»Øµ÷º¯Êý¡£handler==CallbackMethod()
if (objXmlHttp != null)
{
objXmlHttp.onreadystatechange = handler;
}
}
else
{
// Mozilla | Netscape | Safari µÈÆäËüä¯ÀÀÆ÷¡£
objXmlHttp = new XMLHttpRequest();
if (objXmlHttp != null)
{
objXmlHttp.onload = handler;
objXmlHttp.onerror = handler;
}
}
return objXmlHttp;
}
var xmlHttp; //´æ·ÅÈ«¾ÖXMLHttpRequest¶ÔÏó¡£
  function ExecuteCall(url,aa) //aaΪelementµÄid
{
try
{
//»ñÈ¡XMLHttpRequest²¢´æÈëxmlHttp±äÁ¿¡£
xmlHttp = GetXmlHttpObject(CallbackMethod);
//·¢ËÍÒì²½ÇëÇó¡£
xmlHttp.open('GET', url, true);
xmlHttp.send(null);
}
catch(e){}
}
//XMLHttpRequestÖ´Ðгɹ¦ºóµÄ»Øµ÷º¯Êý¡£
function CallbackMethod()
{
try
{
//ÅжÏÊÇ·ñÊdzɹ¦×´Ì¬¡£
if (xmlHttp.readyState == 4 || xmlHttp.readyState == 'complete')
{
//È¡µÃ·µ»ØµÄ½á¹ûÊý¾Ý¡£
var response = xmlHttp.responseText;
//°Ñ·µ»ØµÄÊý¾Ý·ÅÈëÏàÓ¦HTML±êÇ©¡£
if (response.length > 0)
{
if(showResp==1)
{
  document.getElementById(aa).innerHTML= response; //aaΪElementµÄID 
}
}
}
}
catch(e){}
}
 
html ´úÂëµ÷Óà function ExecuteCall(url,aa)¡£urlΪ·þÎñÆ÷ÏòÇ°¶Ë´«ËÍÊý¾ÝµÄ ¹ý¶ÈÒ³Ã棬URL¿ÉÒÔ½øÐд«²Î¡£url ÀàÐÍ¿ÉÒÔÊÇaspx,ashx
aspxÀàÐÍ´úÂë
string str = string.Empty;
        string strHtml = string.Empty;
        if (Request.QueryString["id"] != null)
        {