Fired immediately after a notification has been shown.

Syntax

browser.notifications.onShown.addListener(listener)
browser.notifications.onShown.removeListener(listener)
browser.notifications.onShown.hasListener(listener)

Events have three functions:

• addListener(listener)

  • : Adds a listener to this event.

  removeListener(listener)

  • : Stop listening to this event. The listener argument is the listener to remove.

  hasListener(listener)

  • : Check whether listener is registered for this event. Returns true if it is listening, false otherwise.

addListener syntax

Parameters

• listener

  • : The function called when this event occurs. The function is passed this argument:

    • notificationId

      • : string. ID of the notification that has been shown.

Examples

Add a listener to the notifications.onShown event and log its details:

function logShown(itemId) {
  console.log(`shown: ${itemId}`);
  browser.notifications.getAll().then((all) => {
    console.log(all[itemId]);
  });
}

browser.notifications.onShown.addListener(logShown);

Browser compatibility

This API is based on Chromium’s chrome.notifications API.