detectie.js

var BrowserDetectMixin = {
    // Lifted from:
    // http://stackoverflow.com/questions/19999388/jquery-check-if-user-is-using-ie/21712356#21712356
    detectIE: function() {
        var ua = window.navigator.userAgent;

        var msie = ua.indexOf('MSIE ');
        if (msie > 0) {
            // IE 10 or older => return version number
            return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
        }

        var trident = ua.indexOf('Trident/');
        if (trident > 0) {
            // IE 11 => return version number
            var rv = ua.indexOf('rv:');
            return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
        }

        var edge = ua.indexOf('Edge/');
        if (edge > 0) {
            // IE 12 => return version number
            return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
        }

        // other browser
        return false;
    }
};