JavaScript ajax請求

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var XMLHttpReq;function createXMLHttpRequest() {    try {        XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");//IE高版本建立XMLHTTP    }    catch(E) {        try {            XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");//IE低版本建立XMLHTTP        }        catch(E) {            XMLHttpReq = new XMLHttpRequest();//相容非IE瀏覽器，直接建立XMLHTTP對象        }    }}function sendAjaxRequest(url) {    createXMLHttpRequest();                                //建立XMLHttpRequest對象    XMLHttpReq.open("post", url, true);    XMLHttpReq.onreadystatechange = processResponse; //指定響應函數    XMLHttpReq.send(null);}//回呼函數function processResponse() {    if (XMLHttpReq.readyState == 4) {        if (XMLHttpReq.status == 200) {            var text = XMLHttpReq.responseText;            /**             *實現回調             */            text = window.decodeURI(text);            var cp = document.getElementById("cp");            cp.innerHTML = "";            var values = text.split("|");            for (var i = 0; i < values.length; i++) {                var temp = document.createElement("option");                temp.text = values[i];                temp.value = values[i];                cp.options.add(temp);            }        }    }}

 

JavaScript ajax請求