Graceful Fallback for Extreme Customization:
FT Digital Edition: our digitised print edition
，更多细节参见爱思助手下载最新版本
▲ 传统防窥膜结构，图片来自@上海复瞻智能科技
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.