如何在JS中获取Request方法

function GetRequest() {
var url = location.search; //获取url中"?"符后的字串 
var theRequest = new Object();
if (url.indexOf("?") != -1) {
var str = url.substr(1);
strs = str.split("&");
for (var i = 0; i < strs.length; i++) {
theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
}
}
return theRequest;
}

var Request = GetRequest();
var key = Request["EphemeralId"];