1. Mozilla
  2. Add-ons
  3. Browser extensions
  4. JavaScript APIs
  5. captivePortal
  6. captivePortal.canonicalURL

captivePortal.canonicalURL

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

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
canonicalURL
Chrome – No support
Chrome
footnote No support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 72 (Release date: 2020-01-07)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – No support
Safari
footnote No support
Firefox for Android – No support
Firefox for Android
footnote No support
Safari on iOS – No support
Safari on iOS
footnote No support

Tip: you can click/tap on a cell for more information.

Full support
No support

Note: This API is based on Chromium's chrome.tabs API. This documentation is derived from tabs.json in the Chromium code.

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