Unverified50% confidenceFactExact time
Chrome 扩展通过 Manifest V3 规范运行内容脚本，可直接访问 DOM 并注入悬浮层
1
Sources
50%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
UnverifiedChrome extensions work through the Content Script injection mechanism provided by the Chrome Extension API, injecting JavaScript into the page context after the page loads74% similarUnverifiedChrome 扩展的核心能力包括 content script、background service worker 和 popup 页面73% similarUnverifiedChrome扩展的核心文件manifest.json声明了扩展的权限、图标、弹窗页面、内容脚本等元数据72% similarUnverified浏览器扩展可通过内容脚本（Content Script）机制在用户访问任意网站时自动运行并动态向页面注入HTML元素和样式71% similarUnverified开发者模式下将代码文件夹拖入 Chrome 扩展程序页面即可加载插件，无需注册、付费或上架商店71% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/574158API
curl https://kongchang.com/api/v1/knowledge/claims/574158MCP
get_claim(id=574158)