extension.onRequestExternal
Warning: This is not implemented in Firefox because it has been deprecated since Chrome 33. Please use runtime.onMessageExternal instead.
Fired when a request is sent from another extension.
Syntax
js
chrome.extension.onRequestExternal.addListener(function(
request, // optional any
sender, // runtime.MessageSender
sendResponse, // function
) { })
chrome.extension.onRequestExternal.removeListener(listener)
chrome.extension.onRequestExternal.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 these arguments:
request
-
any
. The request sent by the calling script. sender
sendResponse
-
function
. Function to call when you have a response. The argument should be any JSON-ifiable object, or undefined if there is no response.
Browser compatibility
BCD tables only load in the browser
Note: This API is based on Chromium's chrome.extension
API. This documentation is derived from extension.json
in the Chromium code.