If a document in a background tab calls window.confirm() then the call to confirm() will return immediately with false, and no dialog will be shown to the user. If the tab is active, then the call will show a dialog. Specifically, this removes the ability to use window.confirm() to bring a tab to the front against the user’s will.

Status in Chromium


Removed (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped/Shipping
  • Shipped/Shipping
  • No signals



This shipped in Safari 9.1 and Firefox 44.

Last updated on 2020-11-09