获取url？后面的参数值

//方法一：正则法 
    function getQueryString(name) {
        var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
        var r = window.location.search.substr(1).match(reg);
        if (r != null) {
            return unescape(r[2]);
        }
        return null;
    }
    // 这样调用：
    alert(GetQueryString("参数名1"));
    alert(GetQueryString("参数名2"));
    alert(GetQueryString("参数名3"));

//方法二：split拆分法
    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 = new Object();
    Request = GetRequest();
    // var 参数1,参数2,参数3,参数N;
    // 参数1 = Request['参数1'];
    // 参数2 = Request['参数2'];
    // 参数3 = Request['参数3'];
    // 参数N = Request['参数N'];