如何获取url上面的参数

例如 ：网页.html？id=0 

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

var Request = new Object();
Request = getRequest();
var id=Request['id'];
console.log(id)；