abstract：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title></title> <script type=&q
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
.menu {
width: 800px;
height: 35px;
margin: 0px auto;
background: #000;
margin-top: 20px;
color: #fff;
border: 1px solid #ccc;
border-radius: 5px;
}
ul {
list-style: none;
}
ul li {
width: 100px;
height: 35px;
line-height: 35px;
text-align: center;
float: left;
border-right: 1px solid #ccc;
cursor: pointer;
}
.twobox li {
width: 100px;
height: 30px;
line-height: 30px;
background: #2D2D2D;
color: #A9A9A9;
font-size: 14px;
position: relative;
border: 0px;
}
.twobox li:hover {
background: #000;
color: #fff;
}
.three {
position: absolute;
top: 0px;
left: 100px;
}
.three li {
width: 99px;
height: 30px;
line-height: 30px;
border: 0;
}
</style>
<script type="text/javascript">
$(document).ready(function () {
$('.twobox').hide()
$('.three').hide()
$('.one>li').mouseover(function () {
$(this).find('.twobox').slideDown(500)
})
$('.one>li').mouseleave(function () {
$(this).find('.twobox').slideUp(500)
})
$('.two').mouseover(function () {
$(this).find('.three').slideDown(500)
})
$('.two').mouseleave(function () {
$(this).find('.three').slideUp(500)
})
})
</script>
</head>
<body>
<div class="menu">
<ul class="one">
<li>首 页</li>
<li>产 品
<ul class="twobox">
<li>产品1</li>
<li class="two">产品2
<ul class="three">
<li>产品1.1</li>
<li>产品1.2</li>
<li>产品1.3</li>
<li>产品1.4</li>
</ul>
</li>
<li class="two">产品3
<ul class="three">
<li>产品3.1</li>
<li>产品3.2</li>
<li>产品3.3</li>
<li>产品3.4</li>
</ul>
</li>
<li>产品4</li>
</ul>
</li>
<li>公司新闻
<ul class="twobox">
<li>公司新闻1</li>
<li class="two">公司新闻2
<ul class="three">
<li>公司新闻1.1</li>
<li>公司新闻1.2</li>
<li>公司新闻1.3</li>
</ul>
</li>
<li>公司新闻3</li>
<li>公司新闻4</li>
</ul>
</li>
<li>行业新闻</li>
<li>联系我们</li>
</ul>
</div>
</body>
</html>
Correcting teacher：灭绝师太Correction time：2019-03-22 09:16:28
Teacher's summary：作业完成的相当快啊,课程看的也比较迅速,需要掌握好知识点哦!