事件流
三个过程:
从window对象向下到触发元素的父级元素是捕获过程;
然后触发相应事件
从当前触发事件的节点的父节点开始向上冒泡，冒泡到顶层的window对象
capture phase 捕获过程
target phase 触发过程
bubble phase 冒泡过程
冒泡与捕获
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<style media="screen">
#div1{
width: 300px;
height: 100px;
background: red;
color: #fff;
text-align: center;
}
</style>
<body>
<div id="div1" >
目标元素
</div>
<script type="text/javascript">
var ev =document.getElementById('div1');
window.addEventListener('click',function () {
console.log("window click");
},true);
document.addEventListener('click',function () {
console.log('document click');
},true);
document.documentElement.addEventListener('click',function () {
console.log('html click');
},true);
document.body.addEventListener("click",function () {
console.log('body click');
},true);
ev.addEventListener('click',function () {
console.log('ev click');
})
</script>
</body>
</html>最后更新于
