Causes CSS properties exposed on CSSStyleDeclaration (e.g. style.color, style.fontSize, etc) to appear via CSSStyleDeclaration's prototype (as opposed to appearing as the object's 'own' properties). Additionally, dashed attributes [1] are made available on CSSStyleDeclaration.

Status in Chromium


In development (tracking bug)

Consensus & Standardization

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

  • Shipped/Shipping
  • Positive
  • No signals


Last updated on 2022-01-21