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sm4.html
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sm4.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
a {
text-decoration: none;
}
.header {}
.header .list {
background: #000;
}
.header .list .item {}
.header .list .item .title {
position: relative;
background: #f00;
display: block;
padding: 20px 0;
color: #fff;
}
.header .list .item .title:not(:last-child) {
border-bottom: 1px solid #fff;
}
.header .list .item .title::after {
content: '';
position: absolute;
right: 25px;
width: 25px;
height: 25px;
background: #ccc;
}
.header .list .item .title.on::after {
background: #000;
}
.header .list .item .sub {
display: none;
}
.header .list .item .sub .sub-item {
display: block;
padding: 20px 0;
}
.header .list .item .sub .sub-item:not(:last-child) {
border-bottom: 1px solid #fff;
}
.header .list .item .sub .sub-item a {
color: #fff;
}
</style>
</head>
<body>
<header class="header">
<ul class="list">
<li class="item">
<a href="#void" class="title">menu1</a>
<ul class="sub">
<li class="sub-item"><a href="#">sub1</a></li>
<li class="sub-item"><a href="#">sub2</a></li>
<li class="sub-item"><a href="#">sub3</a></li>
<li class="sub-item"><a href="#">sub4</a></li>
<li class="sub-item"><a href="#">sub5</a></li>
</ul>
</li>
<li class="item">
<a href="#void" class="title">menu2</a>
<ul class="sub">
<li class="sub-item"><a href="#">sub1</a></li>
<li class="sub-item"><a href="#">sub2</a></li>
<li class="sub-item"><a href="#">sub3</a></li>
<li class="sub-item"><a href="#">sub4</a></li>
<li class="sub-item"><a href="#">sub5</a></li>
<li class="sub-item"><a href="#">sub6</a></li>
<li class="sub-item"><a href="#">sub7</a></li>
<li class="sub-item"><a href="#">sub8</a></li>
</ul>
</li>
<li class="item">
<a href="#void" class="title">menu3</a>
<!-- <ul class="sub">
</ul> -->
</li>
</ul>
</header>
<script>
$('.title').click(function (e) {
e.preventDefault()
if ($(this).hasClass('on')) {
$('.title').removeClass('on').siblings('.sub').slideUp();
} else {
$('.title').removeClass('on').siblings('.sub').slideUp();
$(this).addClass('on').siblings('.sub').slideDown();
}
})
</script>
</body>
</html>