Google Universal Analytics Primary and Secondary Tracking Code

gistfile1.js

//
function getParameterByName(name) {
    name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
    var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
        results = regex.exec(location.search);
    return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}

/**
The afga class is used to handle all custom google analytics tracking across all web properties
@class afga
@constructor
*/
var afga = {
	currentProperty : window.location.host,
	currentGaid : '', 
	currentUserID : getParameterByName('userid'),
	autoLinkArray : [],
	afProperties : [
		{
		  name : 'aftestingsite1.dev',
		  gaid : 'UA-XXXXXXXX-5'
		},
		{
		  name : 'aftestingsite2.dev',
		  gaid : 'UA-XXXXXXXX-6'
		}
	], 
	/**
	The setSiteValues method is used to set the current google analytics (currentGaid)
	property with the current site google analytics id and to set the auto link tracker array (autoLinkArray)
	@method setSiteValues
	*/
	setSiteValues : function () {
		for (var i = 0; i <= afga.afProperties.length - 1; i++) {
			if (afga.currentProperty == afga.afProperties[i].name) {
				afga.currentGaid = afga.afProperties[i].gaid;
			}
			else {
				afga.autoLinkArray.push(afga.afProperties[i].name);
			}
		};
	},

	/**
	The createPrimaryTracking method is used to set the primary "catch all" google analytics tracking
	@method createPrimaryTracking
	*/
	createPrimaryTracking : function () {

		ga('create', 'UA-XXXXXXXX-4', 'auto', {'name': 'primaryTracker', 'userId': afga.currentUserID, 'cookieName' : '_ga_primary'});
		ga('primaryTracker.require', 'displayfeatures');
		ga('primaryTracker.send', 'pageview', {
			'dimension1' : afga.currentUserID
		});
	},

	/**
	The createSecondaryTracking method is used to set the "site specific" secondary google analytics tracking
	@method createSecondaryTracking
	*/
	createSecondaryTracking : function () {
		if (afga.currentGaid) {
			//creating the secondary tracking objects
			ga('create', afga.currentGaid, afga.currentProperty, {'name': 'secondaryTracker', 'userId': afga.currentUserID, 'cookieName' : '_ga_secondary'}); 
			ga('secondaryTracker.require', 'displayfeatures');
			ga('secondaryTracker.send', 'pageview', {
				'dimension1' : afga.currentUserID
			});
		}
	}, 

	/**
	The send method is used to call the send method on both analytics profiles
	@method send
	@params type {string} The type of send i.e. event
	@params parameters {string or object} The parameters associated with the type reference: https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference
	*/
	send : function (type, parameters) {
		ga('primaryTracker.send', type, parameters); 
		ga('secondaryTracker.send', type, parameters); 
	},

	/**
	The set method is used to call the set method on both analytics profiles
	@method set
	@params type {string} The type of send i.e. event
	@params parameters {string or object} The parameters associated with the type reference: https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference
	*/
	set : function (type, parameters) {
		ga('primaryTracker.set', type, parameters); 
		ga('secondaryTracker.set', type, parameters); 
	},

	/**
	The init method is used to check if the ga object is created and fire all custom tracking
	with optional callback
	@method init
	@params callback {function} Optional callback function for when tracking is created
	*/
	init : function (callback) {
		//check if the ga object is there
		if (window.ga) {
			afga.setSiteValues();
			afga.createPrimaryTracking();
			afga.createSecondaryTracking();
			if (callback) {
				callback();
			}
		}
		else {
			//console.log('GA Isn\'t Loading');
		}
	}
}