Always-working Google Analytics Event/Pageview code

ga-event-pageview.js

(function () {
	/**
	 * Track a virtual pageview
	 * @param url String the URL to send to GA. Developer will need to prefix as needed. /virtual/ for virtual pages, /download/ for downloads are a good startingpoint.
	 * @param title String (optional) Title to send with the page-hit. document.title will be used if omitted.
	 * @returns {Number} the result of the ga(), _gaq.push() or pageTracker._trackPageview call
	 */
	window.gaPageview = function (url, title) {
		title = title || false;
		if (!title) {
			title = document.title;
		}

		if ( 'undefined' !== typeof dataLayer ) {
			return dataLayer.push({
				'event':'VirtualPageview',
				'virtualPageURL': url,
				'virtualPageTitle' : title,
			});
		}

		if ('function' === typeof ga) {
			return ga('send', {'hitType': 'pageview', 'page': url, 'title': title});
		}

		if ('undefined' !== typeof _gaq) {
			_gaq.push(["_set", "title", title]);
			return _gaq.push(['_trackPageview', url]);
		}

		// the SYNC tracker usually exposes the _gaq object, but in case it does not...
		if ('undefined' !== typeof pageTracker && 'function' === typeof pageTracker._trackPageview) {
			// temporarily set document.title to the wished-for title; there is no other way to get the correct title in analytics with this tracking system
			var oldTitle = document.title;
			document.title = title;
			var result = pageTracker._trackPageview(url);
			document.title = oldTitle;
			return result;
		}

		console.error("No valid tracker agent could be found. Did NOT send pageview.");
	};

	/**
	 * Track an event
	 * @param category String the event category
	 * @param action String the event action
	 * @param opt_label String (optional) event Label
	 * @param opt_value String (optional) event Value
	 * @param opt_noninteraction Boolean (optional) nonInteraction yes or no (default is no for interactive)
	 * @returns {Number} the result of the ga() or _gaq.push() call
	 */
	window.gaEvent = function (category, action, opt_label, opt_value, opt_noninteraction) {
		if ( 'undefined' !== typeof dataLayer ) {
			return dataLayer.push({
				'event':'virtualEvent',
				'eventCategory': category,
				'eventAction' : action,
				'eventLabel' : opt_label,
				'eventValue' : opt_value,
				'eventNonInteraction': opt_noninteraction
			});
		}

		if ('function' === typeof ga) {
			return ga('send', 'event', category, action, opt_label, opt_value, { nonInteraction: opt_noninteraction });
		}

		if ('undefined' !== typeof _gaq) {
			var parameters = arguments;
			parameters.unshift('_trackEvent');
			return _gaq.push(parameters)
		}

		// the SYNC tracker usually exposes the _gaq object, but in case it does not...
		if ('undefined' !== typeof pageTracker && 'function' === typeof pageTracker._trackEvent) {
			return pageTracker._trackEvent(category, action, opt_label, opt_value, opt_noninteraction );
		}

		console.error("No valid tracker agent could be found. Did NOT send event.");
	};
})();