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.
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)
校验是否
listener
is registered for this event. Returns
true
if it is listening,
false
否则。
callback
Function that will be called when this event occurs. The function will be passed the following arguments:
newState
对象
. An
Error
object representing the error.
BCD tables only load in the browser
最后修改： , 由 MDN 贡献者