runtime.onStartup

Fired when a profile that has this extension installed first starts up. This event is not fired when an incognito profile is started, even if this extension is operating in 'split' incognito mode.

Syntax

browser.runtime.onStartup.addListener(function() {...})
browser.runtime.onStartup.removeListener(listener)
browser.runtime.onStartup.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

A function that will be called when this event occurs.

Browser compatibility

EdgeFirefoxChromeOpera
Basic support?NoYes33
Firefox
Basic support48.0

Examples

Acknowledgements

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

Document Tags and Contributors

 Contributors to this page: wbamberg, rolfedh
 Last updated by: wbamberg,