Unverified90% confidenceFactTime unknown
在浏览器中，JS运行时由渲染引擎（Blink）、JS引擎（V8）和浏览器API层共同构成，window、document等全局对象由C++层实现并暴露给JS
1
Sources
90%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
Related Entities
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