asp ajax无刷新保存数据程序代码

var request = false;

try{
 request = new XMLHttpRequest();
}
catch (trymicrosoft) {
  try{
    request = new ActiveXObject("Msxml2.XMLHTTP");
   }
  catch (othermicrosoft) {
    try {
      request = new ActiveXObject("Microsoft.XMLHTTP");
    }
    catch (failed) {
      request = false;
    } 
  }
}

if (!request)
 alert("Error initializing XMLHttpRequest!");

//再定义反馈接收函数

function updatePage() {
 if (request.readyState == 4) {
   if (request.status == 200) {
  
  //alert(request.responseText);
 
   } else{
     //alert("status is " + request.status);
  }
 }
}

 request.open("GET", "xxxx.asp?parm=yyyy", true);
 request.onreadystatechange = updatePage;
 request.send(null);

request.open("POST", url, true);
request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
request.onreadystatechange = updatePage;
request.send("parm1=....&parm2=....");