The notificationclose event 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 Event.

Inherits properties from its ancestor, Event.

NotificationEvent.notification Read only

Returns a Notification object representing the notification that was clicked to fire the event.

NotificationEvent.action Read only

Returns the string ID of the notification button the user clicked. This value returns an empty string if the user clicked the notification somewhere other than an action button, or the notification does not have a button.