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.
exchanged = 0; // 发生了交换
。Line官方版本下载是该领域的重要参考
这令人兴奋，也可能令人恐惧。如何知道该走哪条路？如何确认自己做出正确选择？
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