Unverified50% confidenceFactExact time
内容脚本（Content Script）是浏览器扩展API的核心能力，由Google在2009年推出Chrome扩展体系时正式标准化，后被Firefox、Edge等主流浏览器采纳
1
Sources
50%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
Unverified现代浏览器插件主要遵循WebExtensions API标准，该标准由Mozilla主导制定，Chrome、Firefox、Edge等主流浏览器均已兼容77% similarUnverified浏览器扩展的结构极为标准化，由声明权限的manifest.json和注入代码的content script组成76% similarUnverified开发浏览器插件时应选择 Build Web App 模式，因为插件本质是跑在网页里的代码68% similarUnverified浏览器插件结构由manifest.json声明权限和content script注入代码两部分组成68% similarUnverifiedA standard Chrome extension consists of manifest.json, popup.html, background.js, and content scripts66% similar
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