js获取后台数据代码 Ajax

  function ProcessResponse()
    {
   if (objRequest.readyState == 4)
   {
    if (objRequest.status == 200)
    {         
      
              //remark:兼容IE、Firefox
                    var xml = objRequest.responseXML;
                    var dataRows = xml.getElementsByTagName("Root");
                    var dataRow=dataRows[0];
                    if(document.getElementById("title2note")!=null)
                    { 
                        document.getElementById("title2note").style.display = "none";
                        document.body.removeChild(document.getElementById("title2note"));                                     
                    }
                    if(dataRow.getElementsByTagName("Quote").length>0)
                    {
                       //alert("Total access count is : "+dataRow.getElementsByTagName("Quote")[0].text);    //only IE                  
                       alert("Total access count is : "+dataRow.getElementsByTagName("Quote")[0].childNodes[0].nodeValue); //firefox、ie...
                    }
                    else if (dataRow.getElementsByTagName("Err").length>0)
                    {
                       //alert("Error is : "+dataRow.getElementsByTagName("Err")[0].text);
                       alert("Error is : "+dataRow.getElementsByTagName("Err")[0].childNodes[0].nodeValue); //firefox、ie...
                    }
                    document.form1.btnSubmit.disabled=false;                   
                }
            }
      }