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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.。关于这个话题，旺商聊官方下载提供了深入分析
if (offset = totalBytes) {。关于这个话题，WPS下载最新地址提供了深入分析
12:17, 27 февраля 2026Экономика。业内人士推荐Line官方版本下载作为进阶阅读