ajax常用函数(1)

function getXMLDocument() {var xDoc = null;if (document.implementation && document.implementation.createDocument) {// Mozilla/SafarixDoc = document.implementation.createDocument("", "", null);} else {if (typeof ActiveXObject != "undefined") {var msXmlAx = null;try {// new IEmsXmlAx = new ActiveXObject("Msxml2.DOMDocument");}catch (e) {// old IEmsXmlAx = new ActiveXObject("Msxml.DOMDocument");}xDoc = msXmlAx;}}if (xDoc = null || typeof xDoc.load == "undefined") {xDoc = null;}return xDoc;}function getXMLHTTPRequest() {var xRequest = null;if (window.XMLHttpRequest) {// Mozilla/SafarixRequest = new XMLHttpRequest();} else {if (typeof ActiveXObject != "undefined") {// IExRequest = new ActiveXObject("Microsoft.XMLHTTP");}}return xRequest;}function sendRequest(url, params, HttpMethod) {if (!HttpMethd) {HttpMethd = "POST";}var req = getXMLHTTPRequest();if (req) {req.open(HttpMethod, url, true);req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");req.send(params);}}