<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.father{
width: 200px;
height: 200px;
background-color: blue;
}
.son{
width: 100px;
height: 100px;
background-color: red;
}
</style>
</head>
<body>
<div class="father">
<div class="son"></div>
</div>
</body>
<script>
let father = document.querySelector('.father')
let son = document.querySelector('.son')
son.addEventListener('click', function(event){
console.log(event.currentTarget)
})
father.addEventListener('click', function(event){
console.log(event.currentTarget)
})
</script>
</html>
点击class为son的div，运行结果如下：
现在把currentTarget改为target，运行结果如下：
总结
- currentTarget 为 事件绑定的元素
- target 为 触发事件的元素
