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. Returnstrue
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
BCD tables only load in the browser
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.