BrowserInfo

       
        window.browserInfo = function() {
            // Opera 8.0+
            var isOpera = (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
            // Firefox 1.0+
            var isFirefox = typeof InstallTrigger !== 'undefined';
            // Safari 3.0+ "[object HTMLElementConstructor]"
            var isSafari = /constructor/i.test(window.HTMLElement) ||
                (function(p) { return p.toString() === "[object SafariRemoteNotification]"; })(!window['safari'] ||
                    (typeof safari !== 'undefined' && safari.pushNotification));
            // Internet Explorer 6-11
            var isIE = /*@@cc_on!@@*/false || !!document.documentMode;
            // Edge 20+
            var isEdge = !isIE && !!window.StyleMedia;
            // Chrome 1+
            var isChrome = !!window.chrome && !!window.chrome.webstore;
            // Blink engine detection
            var isBlink = (isChrome || isOpera) && !!window.CSS;
            if (isOpera) return "Opera";
            if (isFirefox) return "Firefox";
            if (isSafari) return "Safari";
            if (isIE) return "IE";
            if (isEdge) return "Edge";
            if (isChrome) return "Chrome";
            if (isBlink) return "Blink";
            return "Unknown";
        }
        window.currentBrowser = window.browserInfo();