Gtag Implementation

// Detailed information here:
https://developers.google.com/analytics/devguides/collection/gtagjs/enhanced-ecommerce

// Include in all pages
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-6378212-24"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'UA-6378212-24', {
    'linker': {
      'domains': ['gsx.org', 'asisonline.org', 'wyndhamjade.com', 'mcisemi.com']
     }
});

</script>


// Include as needed by transaction step.

// Add to Cart ///////////////////////////
gtag('event', 'add_to_cart', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ]
});


// Begin Checkout ///////////////////////////
gtag('event', 'begin_checkout', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ],
  "coupon": ""
});


// Purchase Steps //////////////////////////////////

1. Registration /asis2019/registration.html
gtag('event', 'checkout_progress', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ],
  "checkout_step": 1,
  "checkout_option": "Registration"
});


2. Profile /asis2019/profile.html
gtag('event', 'checkout_progress', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ],
  "checkout_step": 2,
  "checkout_option": "Profile"
});


3. Survey /asis2019/survey.html
gtag('event', 'checkout_progress', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ],
  "checkout_step": 3,
  "checkout_option": "Survey"
});


4. Payment /asis2019/payment.html
gtag('event', 'checkout_progress', {
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    }
  ],
  "checkout_step": 4,
  "checkout_option": "Payment"
});


// Transaction //////////////////////////////////

gtag('event', 'purchase', {
  "transaction_id": "24.031608523954162",
  "affiliation": "GSX Registration",
  "coupon": "VENDORCOUPON",
  "value": 23.07,
  "currency": "USD",
  "tax": 1.24,
  "shipping": 0,
  "items": [
    {
      "id": "P12345",
      "name": "Expo-Only Pass: Nonmember",
      "quantity": 2,
      "price": '2.0'
    },
    {
      "id": "P67890",
      "name": " All-Access Pass: Nonmember",
      "quantity": 1,
      "price": '3.0'
    }
  ]
});