编者按：本文是少数派 2025 年度征文活动#TeamCarbon25标签下的入围文章。本文仅代表作者本人观点，少数派只略微调整排版。
Shadow DOM is a web component feature that lets you attach an isolated DOM subtree to any HTML element, hidden from the main document’s standard queries. A querySelector('audio') on the main document cannot see inside a Shadow Root unless you specifically traverse into it. If fermaw’s player was mounted inside a Shadow Root, basic DOM searches would come up empty.
，详情可参考搜狗输入法2026
Lex: FT’s flagship investment column
Radio 4,·26 Feb 2026,·28 mins
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