http://modernnomads.info/js/wng.googleanalytics.wnspecificcustomdimensionsormetrics.js

1wng.googleAnalytics.addSiteSpecificCustomDimensionsOrMetrics = function (opt, analyticsUtils) {
2    var dimensions = {
3        'firstTouch': 'dimension15',
4        'lastTouch': 'dimension16',
5        'firstBlogAuthor': 'dimension17',
6        'lastBlogAuthor': 'dimension18'
7    };
8
9    var internalUtils = {
10        'domainFromUrl': function (url) {
11            var withoutProtocol = url.replace(/^[a-z]+:\/\//, '');
12            var withoutPath = withoutProtocol.split('/')[0];
13
14            return withoutPath;
15        },
16        'stripW3FromDomain': function (domain) {
17            return domain.replace(/^www\./, '').toLowerCase();
18        },
19        'stripWorldNomadsFromDomain': function (domain) {
20            return domain.replace(/\.?worldnomads\.com/, '').toLowerCase();
21        },
22        'first100Characters': function (string) {
23            return string.substr(0, 100);
24        }
25    };
26
27    var currentDomain = internalUtils.stripW3FromDomain(window.location.host);
28    var subdomain = internalUtils.stripWorldNomadsFromDomain(window.location.host);
29
30    // First Journals author
31    if (subdomain == 'journals') {
32        var firstBlogAuthorCookieName = 'blogauthor';
33        var blogAuthorCookie = analyticsUtils.getCookie(firstBlogAuthorCookieName);
34
35        if (!blogAuthorCookie) {
36            var toTrack = internalUtils.first100Characters(subdomain + window.location.pathname);
37            analyticsUtils.setCookie(firstBlogAuthorCookieName, toTrack, { 'expires': 365 });
38            ga('set', dimensions.firstBlogAuthor, toTrack);
39        }
40    }
41
42    // Last Journals or Answers page
43    if (subdomain == 'journals' || subdomain == 'answers') {
44        var toTrack = internalUtils.first100Characters(subdomain + window.location.pathname);
45        ga('set', dimensions.lastBlogAuthor, toTrack);
46    }
47
48    // First touch
49    var firstTouchCookieName = 'firsttouch';
50    var firstTouchCookie = analyticsUtils.getCookie(firstTouchCookieName);
51
52    if (!firstTouchCookie) {
53        var toTrack = internalUtils.first100Characters(opt.url ? opt.url : window.location.host + window.location.pathname + window.location.search);
54        analyticsUtils.setCookie(firstTouchCookieName, toTrack, { 'expires': 183 });
55        ga('set', dimensions.firstTouch, toTrack);
56    }
57
58    // Last touch domain
59    if (document.referrer) {
60        var referrerDomain = internalUtils.stripW3FromDomain(internalUtils.domainFromUrl(document.referrer));
61        var rootDomain = 'worldnomads.com';
62        var currentDomainIsRoot = currentDomain == rootDomain;
63        var referrerDomainIsRoot = referrerDomain == rootDomain;
64
65        if (!referrerDomainIsRoot && currentDomainIsRoot) {
66            ga('set', dimensions.firstTouch, referrerDomain);
67        }
68    }
69};