GTM dataLayer snippets / examples

Copy & Paste dataLayer

Use these dataLayer snippets and modify them to reflect your project needs.

Data layer examples cover these use cases:

dataLayer initialization
generic GTM event structure (with parameters and callback)
user properties dataLayer
page metadata dataLayer
form submission event
all GA4 Ecommerce events

dataLayer General Code Examples
dataLayer Real Life Examples
GA4 Ecommerce dataLayer examples

dataLayer General Code Examples

Data Layer Initialization

var dataLayer = dataLayer || [];

dataLayer.push - Event with parameters

dataLayer.push({
	'event':'event_name',
	'parameter1':'value1',
	'parameter2':'value2',
	'parameter3':'value3'
});

dataLayer.push - Event with an object with parameters

dataLayer.push({
	'event':'event_name',
	'eventData': {
	  'parameter1':'value1',
	  'parameter2':'value2',
	  'parameter3':'value3'
	}
});

dataLayer.push - Event with with parameters and event callback

eventData are cleared on callback.

dataLayer.push({
	'event':'event_name',
	'eventData': {
	  'parameter1':'value1',
	  'parameter2':'value2',
	  'parameter3':'value3'
	},
	'eventCallback' : function() {
	  dataLayer.push({'eventData': undefined });
	}
});

dataLayer Real Life Examples

dataLayer.push - User Data

dataLayer.push({
	'userStatus':'logged in',
	'userCategory':'B2C',
	'userId':'987654'
});

dataLayer.push - Page Metadata

dataLayer.push({
	'pageType':'category',
	'pageCategory1':'Food',
	'pageCategory2':'Fruits',
	'pageCategory3':'Lemon'
});

dataLayer.push - Form Submission

dataLayer.push({
	'event':'form_submitted',
	'eventData': {
	  'formName':'Job Offer',
	  'jobName':'Sales Manager',
	  'jobLocation':'New York'
	}
});

GA4 Ecommerce dataLayer examples

View item list — Product List Page

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "view_item_list",
  ecommerce: {
    items: [
     {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    },
    {
      item_id: "SKU_12346",
      item_name: "Google Grey Women's Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 3.33,
      index: 1,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "gray",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 20.99,
      promotion_id: "P_12345",
      promotion_name: "Summer Sale",
      quantity: 1
    }]
  }
});

Select an item from a list (`select_item`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "select_item",
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

View item details (`view_item`) — Product Detail Page

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "view_item",
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Add or remove an item from a shopping cart (`add_to_cart` or `remove_from_cart`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "add_to_cart", // or "remove_from_cart"
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

View cart (`view_cart`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "view_cart",
  ecommerce: {
    currency: "USD",
    value: 7.77,
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Initiate Checkout (`begin_checkout`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "begin_checkout",
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Add shipping info (`add_shipping_info`) — Checkout step

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "add_shipping_info",
  ecommerce: {
    currency: "USD",
    value: 7.77,
    coupon: "SUMMER_FUN",
    shipping_tier: "Ground",
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Add payment info (`add_payment_info`) — Checkout step

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "add_payment_info",
  ecommerce: {
    currency: "USD",
    value: 7.77,
    coupon: "SUMMER_FUN",
    payment_type: "Credit Card",
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Purchase (Transaction Completed - `purchase`) — Thank you page

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "purchase",
  ecommerce: {
      transaction_id: "T_12345",
      affiliation: "Google Merchandise Store",
      value: 25.42,
      tax: 4.90,
      shipping: 5.99,
      currency: "USD",
      coupon: "SUMMER_SALE",
      items: [
       {
        item_id: "SKU_12345",
        item_name: "Stan and Friends Tee",
        affiliation: "Google Merchandise Store",
        coupon: "SUMMER_FUN",
        currency: "USD",
        discount: 2.22,
        index: 0,
        item_brand: "Google",
        item_category: "Apparel",
        item_category2: "Adult",
        item_category3: "Shirts",
        item_category4: "Crew",
        item_category5: "Short sleeve",
        item_list_id: "related_products",
        item_list_name: "Related Products",
        item_variant: "green",
        location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
        price: 9.99,
        quantity: 1
      },
      {
        item_id: "SKU_12346",
        item_name: "Google Grey Women's Tee",
        affiliation: "Google Merchandise Store",
        coupon: "SUMMER_FUN",
        currency: "USD",
        discount: 3.33,
        index: 1,
        item_brand: "Google",
        item_category: "Apparel",
        item_category2: "Adult",
        item_category3: "Shirts",
        item_category4: "Crew",
        item_category5: "Short sleeve",
        item_list_id: "related_products",
        item_list_name: "Related Products",
        item_variant: "gray",
        location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
        price: 20.99,
        promotion_id: "P_12345",
        promotion_name: "Summer Sale",
        quantity: 1
      }]
  }
});

Add to wish list (`add_to_wishlist`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "add_to_wishlist",
  ecommerce: {
    currency: "USD",
    value: 7.77,
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Internal Promotion View (`view_promotion`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "view_promotion",
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Internal Promotion Click (`select_promotion`)

dataLayer.push({ ecommerce: null });  // Clear the previous ecommerce object.
dataLayer.push({
  event: "select_promotion",
  ecommerce: {
    items: [
    {
      item_id: "SKU_12345",
      item_name: "Stan and Friends Tee",
      affiliation: "Google Merchandise Store",
      coupon: "SUMMER_FUN",
      currency: "USD",
      discount: 2.22,
      index: 0,
      item_brand: "Google",
      item_category: "Apparel",
      item_category2: "Adult",
      item_category3: "Shirts",
      item_category4: "Crew",
      item_category5: "Short sleeve",
      item_list_id: "related_products",
      item_list_name: "Related Products",
      item_variant: "green",
      location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});

Resources

GA4 - Measure Ecommerce — Google Developers

GTM dataLayer snippets / examples

Copy & Paste dataLayer

dataLayer General Code Examples

Data Layer Initialization

dataLayer.push - Event with parameters

dataLayer.push - Event with an object with parameters

dataLayer.push - Event with with parameters and event callback

dataLayer Real Life Examples

dataLayer.push - User Data

dataLayer.push - Page Metadata

dataLayer.push - Form Submission

GA4 Ecommerce dataLayer examples

View item list — Product List Page

Select an item from a list (select_item)

View item details (view_item) — Product Detail Page

Add or remove an item from a shopping cart (add_to_cart or remove_from_cart)

View cart (view_cart)

Initiate Checkout (begin_checkout)

Add shipping info (add_shipping_info) — Checkout step

Add payment info (add_payment_info) — Checkout step

Purchase (Transaction Completed - purchase) — Thank you page

Add to wish list (add_to_wishlist)

Internal Promotion View (view_promotion)

Internal Promotion Click (select_promotion)

Resources

Select an item from a list (`select_item`)

View item details (`view_item`) — Product Detail Page

Add or remove an item from a shopping cart (`add_to_cart` or `remove_from_cart`)

View cart (`view_cart`)

Initiate Checkout (`begin_checkout`)

Add shipping info (`add_shipping_info`) — Checkout step

Add payment info (`add_payment_info`) — Checkout step

Purchase (Transaction Completed - `purchase`) — Thank you page

Add to wish list (`add_to_wishlist`)

Internal Promotion View (`view_promotion`)

Internal Promotion Click (`select_promotion`)