摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width
<!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">
<script type="text/javascript" src="static/js/jquery-3.3.1.js"></script>
<title>Document</title>
<style>
* {
padding: 0px;
margin: 0px;
}
div {
width: 100%;
height: 30px;
background-color: lightskyblue
}
ul {
width: 500px;
height: inherit;
margin: 0 auto;
line-height: 30px;
}
ul li {
list-style: none;
float: left;
margin: 0 30px;
text-align: center;
border: none;
position: relative;
width: 80px;
}
span {
display: inline-block;
width: 80px;
height: 2px;
background-color: lightcoral;
position: absolute;
top: 30px;
left: 0px;
}
</style>
</head>
<body>
<div>
<ul>
<li>首页
<span></span>
</li>
<li>会员中心
<span></span>
</li>
<li>网站导航
<span></span>
</li>
</ul>
</div>
<script>
$(document).ready(function () {
$('span').hide()
$('li').mouseover(function () {
$(this).find('span').show(300)
})
$('li').mouseout(function () {
$(this).find('span').hide()
})
})
</script>
</body>
</html>
批改老师：韦小宝批改时间：2019-01-22 16:37:29
老师总结：不错不错 写的很棒 代码写的也很规范 课后记得多练习几种案例玩玩哦
