<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<script src="jquery-3.3.1.js"></script>
<script>
$(function () {
//事件冒泡
$('div').click(function () {
alert($(this).attr('id'));
});
$('p').click(function () {
alert($(this).attr('id'));
});
$('strong').click(function () {
alert($(this).attr('id'));
return false; //停止冒泡
});
})
</script>
</head>
<body>
<div id="dv" style="300px;height:200px;background-color:yellow">
<p id="p1" style="100px;height:100px;background-color:blue">
<strong id="st">加粗</strong>
</p>
</div>
</body>
</html>