Re: [csswg-drafts] [web-animations] How/when do the "rangeStart/rangeEnd" attributes the Animation interface get evaluated (#13853)

I suppose you have to have an active timeline in order to resolve percentages.
So I assume whenever _both_ of the following two apply:

1. The property `range*` is set.
2. The `Animation.timeline` becomes _active_

Meaning, when a timeline becomes active, any set `range*` property is resolved.
Or, when a `range*` property is set, if the timeline of the associated animation is active, that property is resolved.

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Received on Tuesday, 28 April 2026 20:44:01 UTC