Judge mobile terminal browser version information based on javascript implementation

The explanation is in the comments, so without further ado, I'll just hand you the code

<script type="text/javascript">

/*

*  Smartphone browser version information :

*

*/

  varbrowser={

    versions:function(){

           varu = navigator.userAgent, app = navigator.appVersion;

           return{//Mobile terminal browser version information 

                trident: u.indexOf('Trident') > -1,//IE kernel 

                presto: u.indexOf('Presto') > -1,//The opera kernel 

                webKit: u.indexOf('AppleWebKit') > -1,//Apple, Google kernel < br / >
                gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //Firefox kernel 

                mobile: !!u.match(/AppleWebKit.*Mobile.*/)||!!u.match(/AppleWebKit/),//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 || u.indexOf('Mac') > -1, //Is it iPhone or QQHD browser 

                iPad: u.indexOf('iPad') > -1,//Whether the < br / >
                webApp: u.indexOf('Safari') == -1//Whether the web should be program, no header with bottom 

            };

         }(),

         language:(navigator.browserLanguage || navigator.language).toLowerCase()

}

document.writeln(" Language version : "+browser.language);

document.writeln("  Is it a mobile terminal : "+browser.versions.mobile);

document.writeln(" ios terminal : "+browser.versions.ios);

document.writeln(" android terminal : "+browser.versions.android);

document.writeln("  Whether it is iPhone: "+browser.versions.iPhone);

document.writeln("  Whether or not iPad: "+browser.versions.iPad);

document.writeln(navigator.userAgent);

 

</script>

The browser version of the common mobile terminal is basically here, there is a need for friends to refer to it