utm-parameter-cookies.js

jQuery(document).ready(function($){
	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, " "));
	}
	// Give the URL parameters variable names
	var source = getParameterByName('utm_source');
	var medium = getParameterByName('utm_medium');
	var campaign = getParameterByName('utm_campaign');
	var content = getParameterByName('utm_content');
	var term = getParameterByName('utm_term');
	var email = getParameterByName('email');
	var initialReferrer = document.referrer;
	var lastReferrer = document.referrer;
	var initialPage = window.location.pathname;

	var sourceCookie = Cookies.get('utm_source');
	var mediumCookie = Cookies.get('utm_medium');
	var campaignCookie = Cookies.get('utm_campaign');
	var contentCookie = Cookies.get('utm_content');
	var termCookie = Cookies.get('utm_term');
	var emailCookie = Cookies.get('email');
	var initialReferrerCookie = Cookies.get('initial_referrer');
	var initialPageCookie = Cookies.get('initial_page');

	// Set the cookies
	if( sourceCookie === undefined && source !== '' ) {
		Cookies.set('utm_source', source, { expires: 30 });
	}
	if( mediumCookie === undefined && medium !== '' ) {
		Cookies.set('utm_medium', medium, { expires: 30 });
	}
	if( campaignCookie === undefined && campaign !== '' ) {
		Cookies.set('utm_campaign', campaign, { expires: 30 });
	}
	if( contentCookie === undefined && content !== '' ) {
		Cookies.set('utm_content', content, { expires: 30 });
	}
	if( termCookie === undefined && term !== '' ) {
		Cookies.set('utm_term', term, { expires: 30 });
	}
	if( emailCookie === undefined && email !== '' ) {
		Cookies.set('email', email, { expires: 30 });
	}
	if( initialReferrerCookie === undefined && initialReferrer !== '' ) {
		Cookies.set('initial_referrer', initialReferrer, { expires: 30 });
	}
	if( lastReferrer !== '' ) {
		Cookies.set('last_referrer', lastReferrer, { expires: 30 });
	}
	if( initialPageCookie === undefined && initialPage !== '' ) {
		Cookies.set('initial_page', initialPage, { expires: 30 });
	}
	$('.initial_landing_page').val(Cookies.get('initial_page'));
	$('.referrer').val(Cookies.get('initial_referrer'));
	$('.last_referrer').val(Cookies.get('last_referrer'));
	$('.utm_campaign').val(Cookies.get('utm_campaign'));
	$('.utm_content').val(Cookies.get('utm_content'));
	$('.utm_term').val(Cookies.get('utm_term'));
	$('.utm_source').val(Cookies.get('utm_source'));
	$('.utm_medium').val(Cookies.get('utm_medium'));
});