"mdn-api_useractivation" | Can I use... Support tables for HTML5, CSS3, etc

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March 5, 2026 - New feature: Lazy loading via attribute for video & audio

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useractivation api
useractivation api: hasbeenactive
useractivation api: isactive

Can I use...

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Green ✅ = Supported
Red ❌ = Not supported
Greenish yellow ◐ = Partial support
Gray ﹖ = Support unknown