captivePortal

Determine the captive portal state of the user’s connection. A captive portal is a web page displayed when a user first connects to a Wi-Fi network. The user provides information or acts on the captive portal web page to gain broader access to network resources, such as accepting terms and conditions or making a payment. 

To use this API you need to have the "captivePortal" permission.

Functions

captivePortal.getLastChecked()
Returns the time, in milliseconds, since the last request was completed.
captivePortal.getState()
Returns the portal state as one of unknown, not_captive, unlocked_portal, or locked_portal.

Events

captivePortal.onConnectivityAvailable
Fires when the captive portal service determines that the user can connect to the internet.
captivePortal.onStateChanged

Fires when the captive portal state changes.

Browser compatibility

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