An creates a completely separate browsing context with its own window object, its own document, and most importantly;its own prototype chain. A function hooked on HTMLMediaElement.prototype in the parent window is not the same object as HTMLMediaElement.prototype in the iframe’s window. They’re entirely separate objects. If fermaw’s audio element lived inside an iframe, my prototype hook in the parent window would never fire.
Publication date: 28 February 2026
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雷军在直播中表示，本次直播重点邀请安全专家解读专业内容，目的是让公众清晰了解事故调查的规范流程，小米将严格遵守监管要求，全力配合各类事故调查工作，坚守车辆安全底线。，推荐阅读Safew下载获取更多信息
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