browserSettings.verticalTabs - Content

A {{WebExtAPIRef("types.BrowserSetting", "BrowserSetting")}} object that represents whether the browser has vertical tabs enabled. The object's underlying value is a boolean.

Examples

Set the setting to false, reverting to horizontal tabs:

browser.browserSettings.verticalTabs
  .set({ value: false })
  .then((result) => console.log(`Tabs setting was modified: ${result}`));