Fires when the captive portal service determines that the user can connect to the internet.
browser.captivePortal.onConnectivityAvailable.addListener(callback)
浏览器
.
captivePortal
.
onConnectivityAvailable
.
removeListener
(
listener
)
浏览器
.
captivePortal
.
onConnectivityAvailable
.
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)
校验是否
listener
is registered for this event. Returns
true
if it is listening,
false
否则。
callback
Function that is called when this event occurs. The function is passed the following arguments:
status
string
The status of the service, being one of
captive
if there is an unlocked captive portal present or
clear
if no captive portal is detected.
Handle a change user's ability to connect to the internet:
function handleConnectivity(connectivityInfo) {
console.log("The captive portal status: " + connectivityInfo.status);
}
browser.captivePortal.onConnectivityAvailable.addListener(handleConnectivity);
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最后修改： , 由 MDN 贡献者