Unverified50% confidenceFactExact time
IntersectionObserver 是现代浏览器提供的原生 Web API，用于异步观察目标元素与视口的交叉状态，性能优于 scroll 事件监听配合 getBoundingClientRect
1
Sources
50%
Confidence
Long-term
Relevance
7/6/2026
First Seen
Sources
Building and Deploying a Personal Website from Scratch with Claude Code: A Complete Walkthrough
bilibili最喜欢真真的小陈7/1/2026
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