今天练习的这个小项目是一个侧边导航菜单的效果，这是一个很常用的功能，有隐藏显示功能，这样设计的目的，主要是在一些项目中，我们可以节省一定的页面空间，以便页面显示更多内容。
现在，我们一起来看一下项目的最终效果：
HTML代码：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>【每日一练】22—实现一个菜单选项卡的效果</title>
</head>
<body>
<div class="navigation">
<ul>
<li class="list active">
<a href="#">
<span class="icon"><ion-icon name="home-outline"></ion-icon></span>
<span class="title">首页</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="person-outline"></ion-icon></span>
<span class="title">简介</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="chatbubbles-outline"></ion-icon></span>
<span class="title">消息</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="settings-outline"></ion-icon></span>
<span class="title">设置</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="help-outline"></ion-icon></span>
<span class="title">帮助</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="lock-closed-outline"></ion-icon></span>
<span class="title">密码</span>
</a>
</li>
<li class="list">
<a href="#">
<span class="icon"><ion-icon name="log-out-outline"></ion-icon></span>
<span class="title"> 退出</span>
</a>
</li>
</ul>
</div>
<script type="module" src="https://unpkg.com/ionicons@5.5.2/dist/ionicons/ionicons.esm.js"></script>
<script nomodule src="https://unpkg.com/ionicons@5.5.2/dist/ionicons/ionicons.js"></script>
<script>
const list = document.querySelectorAll('.list');
function activelink(){
list.forEach((item) =>
item.classList.remove('active'));
this.classList.add('active');
}
list.forEach((item) =>
item.addEventListener('click', activelink));
</script>
</body>
</html>
CSS代码：
*
{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Poppins', sans-serif;
}
body
{
min-height: 100vh;
background: #232c33;
display: flex;
justify-content: center;
align-items: center;
}
.navigation
{
position: relative;
height: 500px;
width: 70px;
box-sizing: initial;
border-left: 10px solid #2b343b;
box-shadow: 10px 0 0 #4187f6;
background: #2b343b;
transition: width 0.5s;
overflow-x: hidden;
}
.navigation:hover
{
width: 300px;
}
.navigation ul
{
position: absolute;
top: 0;
left: 0;
width: 100%;
padding-left: 5px;
padding-top: 40px;
}
.navigation ul li
{
position: relative;
list-style: none;
width: 100%;
border-top-left-radius: 20px;
border-bottom-left-radius: 20px;
}
.navigation ul li.active
{
background: #4187f6;
}
.navigation ul li a
{
position: relative;
display: block;
width: 100%;
display: flex;
text-decoration: none;
color: #fff;
}
.navigation ul li.active a
{
color: #fff;
}
.navigation ul li.active a::before
{
content: '';
position: absolute;
top: -30px;
right: 0;
width: 30px;
height: 30px;
background: #2b343b;
border-radius: 50%;
box-shadow: 15px 15px 0 #4187f6;
}
.navigation ul li.active a::after
{
content: '';
position: absolute;
bottom: -30px;
right: 0;
width: 30px;
height: 30px;
background: #2b343b;
border-radius: 50%;
box-shadow: 15px -15px 0 #4187f6;
}
.navigation ul li a .icon
{
position: relative;
display: block;
min-width: 60px;
height: 60px;
line-height: 70px;
text-align: center;
}
.navigation ul li a .icon ion-icon
{
position: relative;
font-size: 1.5em;
z-index: 1;
}
.navigation ul li a .title
{
position: relative;
display: block;
padding-left: 10px;
height: 60px;
line-height: 60px;
white-space: nowrap;
}
写在最后
以上就是每日一练的全部内容，希望今天的小练习对你有用，如果你觉得有帮助的话，请点赞我，关注我，并将它分享给你身边做开发的朋友，也许能够帮助到他。
我是杨小爱，我们明天见。
