notifications.onShown

Fired immediately after a notification has been shown.

Syntax

js
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.

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
onShown

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support

Examples

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

js
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.