Google Analytics tracking helper

ga-helper.js

 /**
     * Google Analytics tracking
     * 
     * This helper sets up a delegate that responds to on click events for 
     * all elements that have a data-gcat (GA category)
     * attribute and initializes a click or submit track event (submit for input[type=submit])
     * and also sends the data-galabel label.
     * 
     * Usage:  
     *   1. Add to the page footer       
        <script>
             NS.setupAnalyticsTracking();
        </script>
     *   
     *   2. Add data-gacat adn data-galabel to links and inputs
     *   <a href="mailto:tom@example.com" data-gacat="Email" data-galabel="Tom_contact">tom@example.com</a>
     *   
     */
     var namespace = 'NS'
(function (ns){
    ns = window[ns] = window[ns] || {};

    var setupAnalyticsTracking = function () {
       $('body').on('click', '[data-gacat]', function () {
           var node = $(this);
           var gaMethod = '_trackEvent';
           var category = node.data('gacat');
           var action = (String(node.attr('type')).toLowerCase() == 'submit') ? 'Submit' : 'Click';
           var label = node.data('galabel');
           var value = null;
           var noninteraction =false;
            if (_gaq && _gaq.push && category && action && label) {
                _gaq.push([gaMethod, category, action, label, , noninteraction]);
            }
       });
    };

    ns.setupAnalyticsTracking = setupAnalyticsTracking;
    
    })(namespace);

index.html

...

        <a href="mailto:tom@example.com" data-gacat="Email" data-galabel="Tom_contact">tom@example.com</a>
        
        <script>
            // If Google analytics has loaded setup tracking
            if (_gaq && NS && NS.setupAnalyticsTracking) {
                NS.setupAnalyticsTracking();
            }
        </script>
    </body>
</html>