1. Mozilla
  2. Add-ons
  3. Browser extensions
  4. JavaScript APIs
  5. tabs
  6. tabs.TAB_ID_NONE

tabs.TAB_ID_NONE

A special ID value given to tabs that are not browser tabs (for example, tabs in devtools windows).

Its value is -1.

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
TAB_ID_NONE
Chrome – Full support
Chrome 46 (Release date: 2015-10-13)
footnote Full support
Edge – Full support
Edge 14 (Release date: 2016-08-02)
footnote Full support
Firefox – Full support
Firefox 45 (Release date: 2016-03-08)
footnote Full support
Opera – Full support
Opera 33 (Release date: 2015-10-27)
footnote Full support
Safari – Full support
Safari 14 (Release date: 2020-09-16)
footnote Full support
Firefox for Android – Full support
Firefox for Android 54 (Release date: 2017-06-13)
footnote Full support
Safari on iOS – Full support
Safari on iOS 15 (Release date: 2021-09-20)
footnote Full support

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

Full support

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

This page was last modified on by MDN contributors.

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2026 by individual mozilla.org contributors. Content available under a Creative Commons license.