AJAX 中的javascript部分

var xmlHttp;

 

function createXMLHttpRequest() {

    if (window.ActiveXObject) {

        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

    }

    else if (window.XMLHttpRequest) {

        xmlHttp = new XMLHttpRequest();

    }

}

 

function queryUserInfo() {

    var jrntl_id = document.getElementById("jrntl_id").value;
 
    if(jrntl_id == "") {
        return;
    }

 

    var url = "../jsp/gywork/getInfo.jsp?userId="+jrntl_id;

 

    createXMLHttpRequest();

    xmlHttp.onreadystatechange = handleAddStateChange;

    xmlHttp.open("GET", url, true);

    xmlHttp.send(null);

}

function handleAddStateChange() {

    if(xmlHttp.readyState == 4) {

        if(xmlHttp.status == 200) {

            var responseXML = xmlHttp.responseXML;
     var queryResult = responseXML.getElementsByTagName("queryResult")[0].firstChild.nodeValue;

     if("failed"== queryResult){
     document.all("jyId").innerHTML="請輸入正確號";
     }else{
  var name =  responseXML.getElementsByTagName("name")[0].firstChild.nodeValue;
  var bank_id = responseXML.getElementsByTagName("bank_id")[0].firstChild.nodeValue;
  var bank_name = responseXML.getElementsByTagName("bank_name")[0].firstChild.nodeValue;
  document.getElementById("jrntl_id_name").value = name;
  document.getElementById("jrnbr").value = bank_id;
  document.getElementById("jrnbr_name").value = bank_name;
    document.all("jyId").innerHTML="號正確";
     }

        }

        else {

            alert("進行後台資料擷取發生錯誤！");

        }

    }

}