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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
onErrorChrome No support NoEdge No support NoFirefox Full support 60
Full support 60
No support 55 — 71
Alternate Name
Alternate Name Uses the non-standard name: onProxyError
Opera No support NoFirefox Android Full support 60
Full support 60
Full support 55
Alternate Name
Alternate Name Uses the non-standard name: onProxyError

Legend

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