By spec, the following should not throw even if additive/accumulative animations are not yet supported by the browser: // Currently throws on Chrome - should not! element.animate( [ { color: 'red', composite: 'accumulate' }, { color: 'blue', composite: 'add' } ], 2000); ); Firefox does not throw in this case.


Working draft or equivalent

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 66
  • Chrome for Android release 66
  • Chrome for iOS release 66
  • Android WebView release 66

Consensus & Standardization

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

  • Shipped/Shipping
  • No signal
  • In development
  • No signals


Search tags

animation, animate, composite,

Last updated on 2020-11-09