如何获取url里面的参数

// 获取url参数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]] = (strs[i].split("=")[1]);        }    }    return theRequest;}var urlOpt = GetRequest();