当前位置：文江博客知识库 en-US 文档 Web API NotificationEvent

NotificationEvent - Web APIs 编辑

The parameter passed into the onnotificationclick handler, the NotificationEvent interface represents a notification click event that is dispatched on the ServiceWorkerGlobalScope of a ServiceWorker.

This interface inherits from the ExtendableEvent interface.

Constructor

NotificationEvent(): Creates a new NotificationEvent object.

Properties

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.

Methods

Inherits methods from its parent, ExtendableEvent.

ExtendableEvent.waitUntil(): Extends the lifetime of the event. Tells the browser that work is ongoing.

Example

self.addEventListener('notificationclick', function(event) {
  console.log('On notification click: ', event.notification.tag);
  event.notification.close();

  // This looks to see if the current is already open and
  // focuses if it is
  event.waitUntil(clients.matchAll({
    type: "window"
  }).then(function(clientList) {
    for (var i = 0; i < clientList.length; i++) {
      var client = clientList[i];
      if (client.url == '/' && 'focus' in client)
        return client.focus();
    }
    if (clients.openWindow)
      return clients.openWindow('/');
  }));
});