Identify web pages using terminal or browser version information

function judgeMoblieBorwser (){
     var browser={
         versions : function (){
             var u = navigator . userAgent , app = navigator . appVersion ;
 return { // mobile terminal browser version information
 trident : u. indexOf ( 'Trident' ) > - 1 , //IE kernel
 presto : u.indexOf ( 'Presto' ) > - 1 , //opera kernel
 webKit                                                            : u. indexOf ( 'AppleWebKit' ) > - 1 , // Apple, Google kernel
 gecko : u. indexOf ( 'Gecko' ) > - 1 && u. indexOf ( 'KHTML' ) == - 1 , // Firefox kernel
 mobile : !! u.match ( /AppleWebKit.*Mobile.*/ ) , // Is it a mobile terminal
 ios : !! u.match ( /\(i[^;]+;( U;)? CPU.+ Mac OS X/ ) , //ios terminal
 android : u.indexOf (                                                                'Android' ) > - 1 || u. indexOf ( 'Linux' ) > - 1 , //android terminal or uc browser
 iPhone : u. indexOf ( 'iPhone' ) > - 1 , // whether it is iPhone or QQHD Browser
 iPad : u. indexOf ( 'iPad' ) > - 1 , // whether iPad
 webApp : u. indexOf ( 'Safari' ) == - 1 // whether web                                                Should be program, no header and bottom
             } ;
         }() ,
 language :( navigator .browserLanguage || navigator . language ) .toLowerCase ()        
    }
    if(browser.versions.mobile || browser.versions.ios || browser.versions.android ||
        browser.versions.iPhone || browser.versions.iPad){
        window.location = "http://m.tx1888.com/";
    }else{
        window.location = "http://txbet1788.com";
    }
}
window.onresize  = function(){
    // judgeMoblieBorwser();
}
//judgeMoblieBorwser();