The CanMakePaymentEvent() constructor creates a new CanMakePaymentEvent object instance.

type

A string representing the type of event. In the case of CanMakePaymentEvent this is always canmakepayment.

A developer would not use this constructor manually. A new CanMakePaymentEvent object is constructed when a handler is invoked as a result of the canmakepayment event firing.

self.addEventListener("canmakepayment", (e) => {
  e.respondWith(
    new Promise((resolve, reject) => {
      someAppSpecificLogic()
        .then((result) => {
          resolve(result);
        })
        .catch((error) => {
          reject(error);
        });
    }),
  );
});

• Payment Handler API
• Web-based payment apps overview
• Setting up a payment method
• Life of a payment transaction
• Using the Payment Request API
• Payment processing concepts