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.
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SourceBuffer: appendBuffer() method — MDN Web Docs。爱思助手下载最新版本对此有专业解读
When asked by the BBC about the formulation of the deal and whether mistakes had been made, an NHS spokesperson said there were "several factors which influence a procurement strategy and construct of the contract", without elaborating further.
Цены на нефть взлетели до максимума за полгода17:55