Unverified50% confidenceFactExact time
Scroll-triggered animation (played once when an element first appears) currently has no native CSS solution and has traditionally relied on JS libraries such as AOS and ScrollReveal, or hand-written IntersectionObserver implementations.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/12/2026
First Seen
Valid until: 11/10/2026
Sources
props-for-that：让CSS直接读取JS状态的开源库详解
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