proxy.onError

Fired when there is an error evaluating the PAC file or the onRequest listener.

The error can be triggered by throwing or returning an invalid value in the proxy.onRequest event handler.

Syntax

browser.proxy.onError.addListener(listener)
browser.proxy.onError.removeListener(listener)
browser.proxy.onError.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. 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:

newState
Object. An Error object representing the error.

Example extensions

Browser compatibility

Report problems with this compatibility data on GitHub
webextensions-desktopwebextensions-mobile
ChromeEdgeFirefoxOperaSafariFirefox for Android
onError

Legend

Full support
Full support
No support
No support
Uses a non-standard name.