httpRequest = {    /*     * 网络请求之GET     * url 请求的网络地址     * callback 回调参数     * */    GET:function(url,callback){        var xhr = cc.loader.getXMLHttpRequest();        xhr.open("GET",url,true);          xhr.onreadystatechange = function () {              if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status <= 207)) {                 err = false;            }else{                err = true;            }            var response = xhr.responseText;            callback(err,response);        };          xhr.send();      },    /*     * 网络请求之POST     * url 请求的网络地址     * params  请求参数  ("id=1&id=2&id=3")     * callback 回调参数     * */    POST:function(url,params,callback){        var nums = arguments.length        if(nums == 2){            callback = arguments[1];            params = "";        }        var xhr = cc.loader.getXMLHttpRequest();          xhr.open("POST", url);          xhr.setRequestHeader("Content-Type","text/plain;charset=UTF-8");        xhr.onreadystatechange = function () {              if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status <= 207)) {                 err = false;            }else{                err = true;            }            var response = xhr.responseText;            callback(err,response);        };        xhr.send(params);     }}//EXMAPLE/*httpRequest.POST("http://127.0.0.1:3000/test","id=1&ids=2", function(err,data){    if(err){        //错误处理    }else{        cc.log(data);    }})*/