index.md

---

title: notifications.onButtonClicked
slug: Mozilla/Add-ons/WebExtensions/API/notifications/onButtonClicked
page-type: webextension-api-event
tags:
  - API
  - Add-ons
  - Event
  - Extensions
  - Non-standard
  - Notifications
  - Reference
  - WebExtensions
  - onButtonClicked
browser-compat: webextensions.api.notifications.onButtonClicked

---

{{AddonSidebar()}}

Fired when the user clicks one of the notification's buttons.

Syntax

browser.notifications.onButtonClicked.addListener(listener)
browser.notifications.onButtonClicked.removeListener(listener)
browser.notifications.onButtonClicked.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 whose button was clicked.

    • buttonIndex

      • : integer. The zero-based index of the button that was clicked.

Browser compatibility

{{Compat}}

{{WebExtExamples}}

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