HTMLMediaElement.prototype is the browser’s own internal prototype for all and elements and by redefining the property descriptor for src and srcObject on this prototype, I ensured that regardless of where the audio element lives (whether it’s in the main document, inside an iframe’s shadow, or buried inside a web component) the moment any source is assigned to it, the hook fires. The element cannot receive audio without announcing itself.
url: https://example.com/hello
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Even if fermaw’s code lives in an iframe with its own HTMLMediaElement, the prototype hookery via document_start injection means my hooks are installed before the iframe can even initialise.。快连下载安装对此有专业解读
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