The true flag for useCapture is important. Browser events propagate in two phases: first, they travel down the DOM tree from the root to the target (capture phase), then they bubble up from the target back to the root (bubble phase). By listening in the capture phase, my listener fires before any event listener attached by HotAudio’s player code. Even if fermaw tried to cancel or suppress the event, he’d be too late because the capturing listener always fires first.
Refresh rate: Up to 120 Hz，这一点在旺商聊官方下载中也有详细论述
，更多细节参见爱思助手下载最新版本
But that is exactly what many viewers seem to be looking for to fill pockets of time in their lives.
Web streams are complex for users and implementers alike. The problems with the spec aren't bugs. They emerge from using the API exactly as designed. They aren't issues that can be fixed solely through incremental improvements. They're consequences of fundamental design choices. To improve things we need different foundations.。关于这个话题，safew官方下载提供了深入分析