CanMakePaymentEvent.md

CanMakePaymentEvent

Namespace: SpawnDev.SpawnJS.JSObjects
Inherits: ExtendableEvent
Source: JSObjects/CanMakePaymentEvent.cs
MDN Reference: CanMakePaymentEvent on MDN

The canmakepayment event of the ServiceWorkerGlobalScope interface is fired on a payment app's service worker to check whether it is ready to handle a payment. Specifically, it is fired when the merchant website calls the PaymentRequest() constructor. https://developer.mozilla.org/en-US/docs/Web/API/CanMakePaymentEvent

Methods

Method	Return Type	Description
RespondWith(Task<bool> response)	void	Enables the service worker to respond appropriately to signal whether it is ready to handle payments.
RespondWith(Promise<bool> response)	void	Enables the service worker to respond appropriately to signal whether it is ready to handle payments.

Examples

SpawnDev.SpawnJS Mapping Note: The JavaScript examples below show the standard Web API usage. In SpawnDev.SpawnJS, the same API is available with C# conventions:

• Properties and methods use PascalCase (e.g., readyState becomes ReadyState)
• Events use ActionEvent with +=/-= (e.g., addEventListener("click", fn) becomes OnClick += handler)
• Async methods return Task<T> instead of Promise<T>
• Objects should be disposed with using statements
• Access via JS.Get<CanMakePaymentEvent>(...) or constructor new CanMakePaymentEvent(...)

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

See full example on MDN