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[scroll-animations-1] Specify liveness of element references #5751

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[scroll-animations-1] Specify liveness of element references #5751

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14 changes: 14 additions & 0 deletions scroll-animations-1/Overview.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -955,6 +955,13 @@ condition from the following:

</div>

Elements referenced by the {{source}} descriptor are "live":
whenever a DOM mutation changes the element represented by the <<id-selector>>,
the user-agent must generate a new {{ScrollTimeline}}
with the new element as the {{ScrollTimeline/source}}
and run the procedure to [=set the timeline of an animation=]
on associated animations.

Issue(4338): Consider choosing animation target's nearest scrollable ancestor
instead of document's scrolling Element for `auto`.

Expand Down Expand Up @@ -1005,6 +1012,13 @@ following:

</div>

Elements referenced by the {{start}} and {{end}} descriptors are "live":
whenever a DOM mutation changes the element represented by an <<id-selector>>,
the user-agent must generate a new {{ScrollTimeline}}
with the new element as the {{ScrollTimeline/start}} (or {{ScrollTimeline/end}})
and run the procedure to [=set the timeline of an animation=]
on associated animations.

<pre class='descdef'>
Name: end
For: @scroll-timeline
Expand Down