js 获取URL后面传的参数

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]]=(decodeURI(strs[i].split("=")[1]));
            }
        }
        return theRequest;
    }

直接调用就行，返回的是对象。