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event.target 返回触发事件的元素
event.currentTarget 返回绑定事件的元素
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="m10">
<a href="javascript:;">1</a>
</div>
<script>
document.getElementById('m10').addEventListener('click',function (e) {
console.log(e.target,e.currentTarget)
})
</script>
</body>
</html>结果
target: <a href="javascript:;">1</a>
currentTarget: <div id="m10"></div>