那么问题来了，一台能触控 MacBook，能带来什么样的价值？
Only “standard” fonts are used for target rendering. All categories can supply source renders. This captures the realistic browser scenario: your page text is in Arial, but the OS picks Noto Sans Tifinagh for the exotic character.
，更多细节参见91视频
* iOS 平台的ByteArray类型实现
But the triumphance of V3 is in the addSourceBuffer hook which solves a subtle problem. In earlier versions, hooking SourceBuffer.prototype.appendBuffer at the prototype level had a vulnerability in that if fermaw’s player cached a direct reference to appendBuffer before the hook was installed (i.e., const myAppend = sourceBuffer.appendBuffer; myAppend.call(sb, data)), the hook would never fire. The player would bypass the prototype entirely and call the original native function through its cached reference.