CODE EXAMPLE FOR JAVASCRIPT

Uncaught TypeError: jQuery.browser is undefined

var matched, browser;

jQuery.uaMatch = function( ua ) {
    ua = ua.toLowerCase();

    var match = /(chrome)[ /]([w.]+)/.exec( ua ) ||
        /(webkit)[ /]([w.]+)/.exec( ua ) ||
        /(opera)(?:.*version|)[ /]([w.]+)/.exec( ua ) ||
        /(msie)[s?]([w.]+)/.exec( ua ) ||       
        /(trident)(?:.*? rv:([w.]+)|)/.exec( ua ) ||
        ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([w.]+)|)/.exec( ua ) ||
        [];

    return {
        browser: match[ 1 ] || "",
        version: match[ 2 ] || "0"
    };
};

matched = jQuery.uaMatch( navigator.userAgent );
//IE 11+ fix (Trident) 
matched.browser = matched.browser == 'trident' ? 'msie' : matched.browser;
browser = {};

if ( matched.browser ) {
    browser[ matched.browser ] = true;
    browser.version = matched.version;
}

// Chrome is Webkit, but Webkit is also Safari.
if ( browser.chrome ) {
    browser.webkit = true;
} else if ( browser.webkit ) {
    browser.safari = true;
}

jQuery.browser = browser;
// log removed - adds an extra dependency
//log(jQuery.browser)