Google Analytics click event tracker as data attribute. Uses jQuery for event handling

ga_event_track.js

/**
 * Google analytics tracking
 * add attribute data-ga-event with json encoded dictionary
 * with keys eventLabel, eventAction, eventCategory
 * eg:
 * # Sample JSON structure
 * {
 *   "eventLabel":" Send Event",
 *   "eventAction": "click",
 *   "eventCategory": "CTA"
 *}
 * # Sample HTML tag with data-ga-event attribute
 * <p data-ga-event="{&quot;eventLabel&quot;:&quot;Send Event&quot;,&quot;eventAction&quot;:&quot;click&quot;,&quot;eventCategory&quot;:&quot;CTA&quot;}">>Send Event</p>
 */
 $(document).on('click.ga', '[data-ga-event]', function(evt) {
    var $el = $(this);
    var gaData = $el.data('ga-event');
    if(gaData) {
        $.extend(gaData, {hitType: 'event'});
        ga('send', gaData);
    }
 });