阻止事件冒泡
第一种:
给元素添加click事件
$("span").click(function(event){
event.stopPropagation(); alert("The span element was clicked.");
});
第二种:
οnclick=xxx()来调用点击事件时
event.stopPropagation();
会报错:Typeerror:Cannot read property ‘stopPropagation’ of undefined
// 正确写法:
//阻止向上冒泡
window.event.stopPropagation();