Check Client Browser Detail

BrowserInfo.js

function browserClientInfo() {
    "undefined" != typeof jQuery ? console.log("jQuery Version", jQuery.fn.jquery) : console.log("jQuery library is not found!");
    navigator.appVersion;
    var n, e, r, o = navigator.userAgent, a = navigator.appName, i = "" + parseFloat(navigator.appVersion),
        s = parseInt(navigator.appVersion, 10);
    -1 != (e = o.indexOf("OPR/")) ? (a = "Opera", i = o.substring(e + 4)) : -1 != (e = o.indexOf("Opera")) ? (a = "Opera", i = o.substring(e + 6), -1 != (e = o.indexOf("Version")) && (i = o.substring(e + 8))) : -1 != (e = o.indexOf("MSIE")) ? (a = "Microsoft Internet Explorer", i = o.substring(e + 5)) : -1 != (e = o.indexOf("Chrome")) ? (a = "Chrome", i = o.substring(e + 7)) : -1 != (e = o.indexOf("Safari")) ? (a = "Safari", i = o.substring(e + 7), -1 != (e = o.indexOf("Version")) && (i = o.substring(e + 8))) : -1 != (e = o.indexOf("Firefox")) ? (a = "Firefox", i = o.substring(e + 8)) : (n = o.lastIndexOf(" ") + 1) < (e = o.lastIndexOf("/")) && (a = o.substring(n, e), i = o.substring(e + 1), a.toLowerCase() == a.toUpperCase() && (a = navigator.appName)), -1 != (r = i.indexOf(";")) && (i = i.substring(0, r)), -1 != (r = i.indexOf(" ")) && (i = i.substring(0, r)), s = parseInt("" + i, 10), isNaN(s) && (i = "" + parseFloat(navigator.appVersion), s = parseInt(navigator.appVersion, 10)), console.log("Cookie Enabled", navigator.cookieEnabled), console.log("Browser: ", a + "(" + i + ")"), console.log("Navigator: ", navigator.appName), console.log("User Agent: ", navigator.userAgent);
    var t = "Unknown OS";
    -1 != navigator.appVersion.indexOf("Win") && (t = "Windows"), -1 != navigator.appVersion.indexOf("Mac") && (t = "MacOS"), -1 != navigator.appVersion.indexOf("X11") && (t = "UNIX"), -1 != navigator.appVersion.indexOf("Linux") && (t = "Linux"), console.log("OS: ", t)
}

function checkBrowser(){
    c = navigator.userAgent.search("Chrome");
    f = navigator.userAgent.search("Firefox");
    m8 = navigator.userAgent.search("MSIE 8.0");
    m9 = navigator.userAgent.search("MSIE 9.0");
    if (c > -1) {
        browser = "Chrome";
    } else if (f > -1) {
        browser = "Firefox";
    } else if (m9 > -1) {
        browser ="MSIE 9.0";
    } else if (m8 > -1) {
        browser ="MSIE 8.0";
    }
    return browser;
}

if (checkBrowser() !== "Firefox"){
    //window.location.href = "/dashboard";
}