JS 前端判断手机访问

$(document).ready(function(){
                var browser = navigator.userAgent.toLowerCase();
                var phone = /iphone|ipod|ipad|android|mobile|blackberry|webos|incognito|webmate|bada|nokia|lg|ucweb|skyfire|micromessenger/i
                if(phone.test(browser)) {
                    window.location.href = "http://m.ifugroup.com"+'?timestamp='+((new Date()).getTime()+Math.random());
                }
            })