The contex is: We are trying to standardize certain Microsoft event extensions. One of them is window.event. Blink *supports* window.event. In the discussion, we agreed that window.event should be *undefined* if an Event's target is in a shadow tree. That is effectivery equivalent to *removing* window.event for Shadow DOM.

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

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

  • Shipped/Shipping
  • No signal
  • No signals



Is still there for Shadow DOM v0.

Last updated on 2020-11-19