Here are some of the code examples included in the second edition of the book.

Please take a moment to test code before it's applied to your live website to ensure it works as expected.


Chapter 19

Modified Google Optimize code for use with Google Tag Manager:

 
<HTML>
<HEAD>
<!-- Start Google Optimize -->
<style>.async-hide { opacity: 0 !important} </style>
<script>(function(a,s,y,n,c,h,i,d,e){s.className+=' '+y;h.start=1*new Date;
h.end=i=function(){s.className=s.className.replace(RegExp(' ?'+y),'')};
(a[n]=a[n]||[]).hide=h;setTimeout(function(){i();h.end=null},c);h.timeout=c;
})(window,document.documentElement,'async-hide','dataLayer',4000,
{'GTM-EDCBA':true});</script>
<!-- Modified GA tracking for Optimize -->
    <script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
  ga('create', 'UA-123456-1', 'auto');
  ga('require', 'GTM-EDCBA');
</script>
<!-- End Google Optimize -->

Standard Google Tag Manager code (which would be placed below the Google Optimize code):

 
<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-ABCDE');</script>
<!-- End Google Tag Manager -->

Chapter 22

Example of event tracking that has been hard-coded within a specific link:

 
<div class="banner-promotion"><a href="/free-trial" onClick="ga('send', 'event', 'Internal Promotion', 'Banner Image', 'Free Trial Offer', 5);"><img src="/images/banners/free-trial.png" /><img  /></a></div>

Custom HTML tag for use with Google Tag Manager to track promotion views (impressions):

 
<script>
(function() {
  dataLayer.push({
    'event': 'my-promotion-impression',
    'ecommerce': {
      'promoView': {
        'promotions': [
         {
           'id': 'promotion1234',
           'name': 'Spring Features',
           'creative': 'Green Shirts',
           'position': '1'
         }]
      }
    }
  });
}());
</script>

Custom HTML tag for use with Google Tag Manager when a promotion is clicked:

 
<script>
(function() {
  dataLayer.push({
    'event': 'my-promotion-click',
    'ecommerce': {
      'promoClick': {
        'promotions': [
         {
           'id': 'promotion1234',
           'name': 'Spring Features',
           'creative': 'Green Shirts',
           'position': '1'
         }]
      }
    }
  });
}());
</script> 

Example of using custom parameters to track promotions:

 
<a href="/free-trial?in_type=banner-image&in_name=free-trial"><img src="/images/banners/free-trial.png" alt="Free Product Trial Offer" /></a>

Chapter 24

Regular Expression to find default pages:

 
^(/(index|default|home)?\.?(html|htm|php|asp|aspx|jsp)?)$

Chapter 28

Example code for tracking users between two websites:

 
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-123456-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments)};
  gtag('js', new Date());

  gtag('config', 'UA-123456-1', {
    'linker': {
    'domains': ['company.com', 'other.com']
    }
  });
</script>

Example of event tracking that has been hard-coded within a specific link to download a PDF:

 
<a href="/files/information.pdf" onclick="gtag('event', 'event_name', {'event_category': 'download', 'event_action': 'pdf', 'event_label': 'information.pdf'});">Download Information PDF</a>

Example of event tracking that has been hard-coded within a specific link to download a Document:

 
<a href="/files/information.pdf" onclick="gtag('event', 'event_name', {'event_category': 'download', 'event_action': 'doc', 'event_label': 'application.doc'});">Download Application Document</a>

Event tracking example:

 
gtag('event', 'event_name', {
'event_category': 'your category',
'event_action': 'your action',
'event_label': 'your label',
'value': 4
});

Event tracking example with a 'non-interaction' hit type:

 
gtag('event', 'event_name', {
'event_category': 'your category',
'event_action': 'your action',
'event_label': 'your label',
'value': 4,
'non_interaction': true
});

Example of the default Google Analytics tracking code:

 
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-123456-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments)};
  gtag('js', new Date());
  gtag('config', 'UA-123456-1');
</script>

Example of tracking code that is modified to track an ecommence transaction:

 
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-123456-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments)};
  gtag('js', new Date());
  gtag('config', 'UA-123456-1');
  gtag('event', 'purchase', {
    "transaction_id": "TID654321",
    "value": 39.99,
    "currency": "USD",
    "tax": 3.19,
    "shipping": 4.95,
    "items": [
    {
    "name": "Branded Tshirt",
    "category": "Apparel",
    "variant": "Red",
    "quantity": 1,
    "price": 19.95
    },
    {
    "name": "Mens Socks",
    "category": "Apparel",
    "variant": "Blue",
    "quantity": 2,
    "price": 5.95
    }
    ]
  });
</script>

Example of a data layer for tracking transactions into Google Tag Manager:

 
<script>
window.dataLayer = window.dataLayer || [];
dataLayer.push({
  'ecommerce': {
    'purchase': {
      'actionField': {
        'id': 'TID654321',
        'revenue': '39.99',
        'tax': '3.19',
        'shipping': '4.95'
      },
      'products': [{ 
        'id': 'PID765123',
        'name': 'Branded Tshirt',
        'category': 'Apparel',
        'variant': 'red',
        'price': '19.95',
        'quantity': 1
       },
       {
        'id': 'PID123445',
        'name': 'Mens Socks',
        'category': 'Apparel',
        'variant': 'blue',
        'price': '5.95',
        'quantity': 2
       }]
    }
  }
});
</script>

<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-AB1EF2');</script>
<!-- End Google Tag Manager -->

Example of tracking code that is modified to track a custom dimension:

 
gtag('config', 'UA-123456-1', {
  'custom_map': {'dimension1': 'author'}
});
gtag('event', 'author_dimension', {'author': 'Jessica'});

Example of correctly modified tracking code that tracks an event:

 
gtag('config', 'UA-123456-1');
gtag('event', 'event_name', {
'event_category': 'promotion',
'event_action': 'featured product',
});

Example of correctly modified tracking code to track data into two separate accounts:

 
gtag('config', 'UA-123456-1');
gtag('config', 'UA-654321-1');

Chapter 29

Regular Expression to track some clicks in Google Tag Manager:

 
\.(pdf|docx?|zip|xlsx?|pptx?|exe|txt)$

Custom JavaScript code to track YouTube video actions in Google Tag Manager:

 
function() {
  var status = {{Video Status}};
  switch (status) {
    case 'start':
      return 'Play';
    case 'pause':
      return 'Pause';
    case 'seek':
      return 'Seeking';
    case 'progress':
      return + {{Video Percent}} + '% Watched';
    case 'complete':
      return '100% Watched';
  }
}