The spec change: (PR to DOM Standard) Blink no longer re-fires a slotchange event at a slot's assignedSlot (or parent slot). See for details.


De-facto standard

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 56

Consensus & Standardization

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

  • No signal
  • No signal
  • In development
  • No signals


Last updated on 2020-11-09