function stopBubble(e){ if (e.stopPropagation) { e.stopPropagation(); }else { e.cancelBubble = true; } }
e.stopPropagation();//w3c标准下e.cancelBubble = true;//IE9
取消冒泡机制的兼容写法
原文：https://www.cnblogs.com/jokes/p/9350995.html
