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
- 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_cartorremove_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)
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
}
]
}
});