javascript捕获事件event

var e = e ? e : window.event;window.event ? window.event.cancelBubble = true : e.stopPropagation();

<button type="button" onclick="showInfo()">button</button><script type="text/javascript">function showInfo(){var e = e ? e : window.event;window.event ? window.event.cancelBubble = true : e.stopPropagation();}</script>

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