Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is only available in Service Workers.
The notificationclose event of the ServiceWorkerGlobalScope interface fires when a user closes a displayed notification spawned by ServiceWorkerRegistration.showNotification().
Notifications created on the main thread or in workers which aren't service workers using the Notification() constructor will instead receive a close event on the Notification object itself.
This event is not cancelable and does not bubble.
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("notificationclose", (event) => { })
onnotificationclose = (event) => { }A NotificationEvent. Inherits from ExtendableEvent and Event.
// Inside a service worker.
self.onnotificationclose = (event) => {
console.log("On notification close: ", event.notification.tag);
};