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checkout_completed
interface

The checkout_completed event logs when a visitor completes a purchase. It's triggered once for each checkout, typically on the Thank you page. However, for upsells and post purchases, the checkout_completed event is triggered on the first upsell offer page instead. The event isn't triggered again on the Thank you page. If the page where the event is supposed to be triggered fails to load, then the checkout_completed event isn't triggered at all.

Anchor to propertiesProperties

Anchor to clientId
clientId
string

The client-side ID of the customer, provided by Shopify

Anchor to context
context
Anchor to data
data
Anchor to id
id
string

The ID of the customer event

Anchor to name
name
string

The name of the customer event

Anchor to seq
seq
number

The sequence index number of the event.

Anchor to timestamp
timestamp
string

The timestamp of when the customer event occurred, in ISO 8601 format

Anchor to type
type
.Standard
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Accessing Standard Events

import {register} from '@shopify/web-pixels-extension';

register(({analytics}) => {
analytics.subscribe('checkout_completed', (event) => {
// Example for accessing event data
const checkout = event.data.checkout;

const checkoutTotalPrice = checkout.totalPrice?.amount;

const allDiscountCodes = checkout.discountApplications.map((discount) => {
if (discount.type === 'DISCOUNT_CODE') {
return discount.title;
}
});

const firstItem = checkout.lineItems[0];

const firstItemDiscountedValue = firstItem.discountAllocations[0]?.amount;

const customItemPayload = {
quantity: firstItem.quantity,
title: firstItem.title,
discount: firstItemDiscountedValue,
};

const paymentTransactions = event.data.checkout.transactions.map((transaction) => {
return {
paymentGateway: transaction.gateway,
amount: transaction.amount,
};
});

const payload = {
event_name: event.name,
event_data: {
totalPrice: checkoutTotalPrice,
discountCodesUsed: allDiscountCodes,
firstItem: customItemPayload,
paymentTransactions: paymentTransactions,
},
};

// Example for sending event data to third party servers
fetch('https://example.com/pixel', {
method: 'POST',
body: JSON.stringify(payload),
keepalive: true,
});
});
});