[]怎么使用http请求

httpRequest: function (url, data) {
var xhr = cc.loader.getXMLHttpRequest();
if (!xhr.onreadystatechange) {
xhr.onreadystatechange = function () {
if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status <= 207)) {
//cc.log("response:\n" + xhr.responseText);
var data = JSON.parse(xhr.responseText);
//console.log(data);
if (data.result_status == 1 && data.top_list) {
WxRankManage._top_list = data.top_list;
//对排行数据进行处理
//wb.EventManager.dispatchCustomEvent(wb.HTTPRE, xhr.responseText);
}
}
};
}
var baseStr = __BASE64.encoder(JSON.stringify(data));
xhr.open("POST", url);
xhr.setRequestHeader('content-type', 'application/x-www-form-urlencoded');
xhr.send("value=" + baseStr);




这个怎么改成laya的http请求