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.

Properties

captivePortal.canonicalURL
Return the canonical URL of the captive-portal detection page. Read-only.

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

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
canonicalURL
No
No
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No
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getLastChecked
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No
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No
No
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No
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getState
No
No
68
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No
No
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No
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onConnectivityAvailable
No
No
68
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No
No
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No
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onStateChanged
No
No
68
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No
No
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No
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/captivePortal