index.md

---

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

---

{{AddonSidebar()}}

Sent after {{WebExtAPIRef("runtime.onSuspend")}} to indicate that the app won't be unloaded after all.

Syntax

browser.runtime.onSuspendCanceled.addListener(listener)
browser.runtime.onSuspendCanceled.removeListener(listener)
browser.runtime.onSuspendCanceled.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)

  • : Checks whether a 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.

Browser compatibility

{{Compat}}

Examples

Listen for SuspendCanceled events:

function handleSuspendCanceled() {
  console.log("Suspend canceled");
}

browser.runtime.onSuspendCanceled.addListener(handleSuspendCanceled);

{{WebExtExamples}}

Note: This API is based on Chromium's chrome.runtime API. This documentation is derived from runtime.json in the Chromium code.