web api event
ServiceWorkerGlobalScope: paymentrequest event
Limited availabilitySecure contextAvailable in workers
The paymentrequest event of the ServiceWorkerGlobalScope interface is fired on a payment app when a payment flow has been initiated on the merchant website via the show() method.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("paymentrequest", (event) => { })
onpaymentrequest = (event) => { }
Event type
A PaymentRequestEvent. Inherits from ExtendableEvent.
Examples
When the show() method is invoked, a paymentrequest event is fired on the service worker of the payment app. This event is listened for inside the payment app’s service worker to begin the next stage of the payment process.
let paymentRequestEvent;
let resolver;
let client;
// `self` is the global object in service worker
self.addEventListener("paymentrequest", async (e) => {
if (paymentRequestEvent) {
// If there's an ongoing payment transaction, reject it.
resolver.reject();
}
// Preserve the event for future use
paymentRequestEvent = e;
// …
});
When a paymentrequest event is received, the payment app can open a payment handler window by calling openWindow(). The payment handler window will present the customers with a payment app interface where they can authenticate, choose shipping address and options, and authorize the payment.
When the payment has been handled, respondWith() is used to pass the payment result back to the merchant website.
See Receive a payment request event from the merchant for more details of this stage.