quick and dirty GA event tag dispatcher for jQuery

ga-event.js

// GA event tracking
// example usage: (a button is used but any HTML element can be used.)
//
// <button data-ga-track-event='["category", "action", "opt_label", "opt_value", "opt_noninteraction"]'>some action</button>
//
// NOTICE: the usage of '' to wrap the attribute value and the "" used for strings
//         This is important since it MUST be valid JSON
$(document.body).on('click', '[data-ga-track-event]', function(e){
	var trackData = $(this).data('ga-track-event');
	if(!$.isArray(trackData)) throw new Error('[data-ga-track-event] must be a valid JSON array');

	if(window._gaq){
		trackData.unshift('_trackEvent');
		window._gaq.push(trackData);
	}else if(window.ga){
		trackData.unshift('event');
		trackData.unshift('send');
		ga.apply(null, trackdata);
	}
});