JavaScript调用Ajax

var xmlHttp;function createXMLHttpRequest() { if (window.XMLHttpRequest) {  xmlHttp = new XMLHttpRequest(); } else {  if (window.ActiveXObject) {   xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");  } }}function createQueryString() { return "name=" + document.getElementById("name").value;}function startRequest()   //页面调用的JavaScript函数{ var url = "http://127.0.0.1/Ajax/TestAjax?timeStamp=" + new Date().getTime();    //强制刷新 createXMLHttpRequest(); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.open("POST", url); xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlHttp.send(createQueryString());}function handleStateChange() { if (xmlHttp.readyState == 4) {  if (xmlHttp.status == 200) {   document.getElementById("response").innerHTML = xmlHttp.responseText;  } }}