runtime.onConnect

Fired when a connection is made from either an extension process or a content script.

Syntax

browser.runtime.onConnect.addListener(function(
  port // Port
) {...})
browser.runtime.onConnect.removeListener(listener)
browser.runtime.onConnect.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:

port
runtime.Port.

Browser compatibility

EdgeFirefoxChromeOpera
Basic support?45.0Yes33
Firefox
Basic support48.0

Examples

Example add-ons

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,