JSFiddle - React, Tailwind, and code Playground

by f0t0n

JavaScript

var getOS = function() {
    var operatingSystems = {
        'Win': 'Windows',
        'Mac': 'MacOS',
        'Linux': 'Linux',
        'X11': 'UNIX'
    };
    for(var k in operatingSystems) {
        if(navigator.appVersion.indexOf(k) !== -1) {
            return operatingSystems[k];
        }
    }
    return undefined;
};

console.log(getOS());