$.extend({    getUrlVars: function () {        var vars = [], hash;        var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');        for (var i = 0; i < hashes.length; i++) {            hash = hashes[i].split('=');            vars.push(hash[0]);            vars[hash[0]] = hash[1];        }        return vars;    },    getUrlVar: function (name) {        return $.getUrlVars()[name];    }});//获取参数对象alert($.getUrlVars());//获取参数a的值alert($.getUrlVar('a'));