Detect Browser In JavaScript

 This is how to detect the browser version and its name using javascript!

navigator.sayswho= (function(){ var ua= navigator.userAgent, tem, M= ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || []; if(/trident/i.test(M[1])){ tem= /\brv[ :]+(\d+)/g.exec(ua) || []; return 'IE '+(tem[1] || ''); } if(M[1]=== 'Chrome'){ tem= ua.match(/\b(OPR|Edge)\/(\d+)/); if(tem!= null) return tem.slice(1).join(' ').replace('OPR', 'Opera'); } M= M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?']; if((tem= ua.match(/version\/(\d+)/i))!= null) M.splice(1, 1, tem[1]); return M.join(' '); })(); console.log(navigator.sayswho); // outputs: `Chrome 62`

​x

 

1

​

2

  navigator.sayswho= (function(){

3

    var ua= navigator.userAgent, tem, 

4

    M= ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];

5

    if(/trident/i.test(M[1])){

6

        tem=  /\brv[ :]+(\d+)/g.exec(ua) || [];

7

        return 'IE '+(tem[1] || '');

8

    }

9

    if(M[1]=== 'Chrome'){

10

        tem= ua.match(/\b(OPR|Edge)\/(\d+)/);

11

        if(tem!= null) return tem.slice(1).join(' ').replace('OPR', 'Opera');

12

    }

13

    M= M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?'];

14

    if((tem= ua.match(/version\/(\d+)/i))!= null) M.splice(1, 1, tem[1]);

15

    return M.join(' ');

16

})();

17

​

18

console.log(navigator.sayswho); // outputs: `Chrome 62`

19

​