notifications.onShown

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(callback)
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

callback

Function that will be called when this event occurs. The function will be passed the following arguments:

notificationId
string. ID of the notification that has been shown.

Browser compatibility

BCD tables only load in the browser

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);

Note:

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