44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
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function send_request(callback, urladdress, isReturnData){
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var xmlhttp = getXMLHttpRequest();
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xmlhttp.onreadystatechange = function(){
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if (xmlhttp.readyState == 4) {//readystate 为4即数据传输结束
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try{
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if(xmlhttp.status == 200){
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if(isReturnData){
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callback(xmlhttp.responseText);
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}
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}else{
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callback("抱歉，没找到此页面:"+ urladdress);
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}
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} catch(e){
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callback("抱歉，发送请求失败，请重试 " + e);
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}
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}
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};
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xmlhttp.open("GET", urladdress, true);
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xmlhttp.send(null);
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}
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function getXMLHttpRequest() {
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var xmlhttp;
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if (window.XMLHttpRequest) {
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try {
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xmlhttp = new XMLHttpRequest();
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xmlhttp.overrideMimeType("text/html;charset=UTF-8");//设定以UTF-8编码识别数据
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} catch (e) {}
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} else if (window.ActiveXObject) {
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try {
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xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
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} catch (e) {
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try {
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xmlhttp = new ActiveXObject("Msxml2.XMLHttp");
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} catch (e) {
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try {
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xmlhttp = new ActiveXObject("Msxml3.XMLHttp");
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} catch (e) {}
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}
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}
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}
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return xmlhttp;
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}
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