移动端底栏导航 Mobile Tab Navigation
1. 概述
项目展示了一个移动端底栏导航组件.
效果:
2. 结构和切图
网页的基本结构如下:
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<body>
<div class="phone">
<img src= "../expanding-cards/avatar0.JPG" alt="home" class="content show"/>
<img src= "../expanding-cards/avatar1.JPG" alt="work" class="content"/>
<img src= "../expanding-cards/avatar2.JPG" alt="blog" clsas="content"/>
<img src= "../expanding-cards/avatar3.JPG" alt="about" class="content"/>
<nav>
<ul>
<li class="active">
<i class="fas fa-home"></i>
<p>Home</p>
</li>
<li>
<i class="fas fa-box"></i>
<p>Work</p>
</li>
<li>
<i class="fas fa-book-open"></i>
<p>Blog</p>
</li>
<li>
<i class="fas fa-users"></i>
<p>About Us</p>
</li>
</ul>
</nav>
</div>
</body>
3. 编写 CSS 样式
完整的 CSS 样式表如下:
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* {
box-sizing: border-box;
}
body {
background-color: #1f1e33;
font-family: 'Open Sans', sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
}
.phone {
position: relative;
overflow: hidden;
border: 3px solid #eee;
border-radius: 15px;
height: 600px;
width: 340px;
}
.phone .content {
opacity: 0;
object-fit: cover;
position: absolute;
top: 0;
left: 0;
height: calc(100% - 60px);
width: 100%;
transition: opacity 0.4s ease;
}
.phone .content.show {
opacity: 1;
}
nav {
position: absolute;
bottom: 0;
left: 0;
margin-top: -5px;
width: 100%;
}
nav ul {
background-color: #fff;
display: flex;
list-style-type: none;
padding: 0;
margin: 0;
height: 60px;
}
nav li {
color: #777;
cursor: pointer;
flex: 1;
padding: 10px;
text-align: center;
}
nav ul li p {
font-size: 12px;
margin: 2px 0;
}
nav ul li:hover,
nav ul li.active {
color: #1f1e33;
}
4. JavaScript
最后, 我们编写 JavaScript 函数:
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const contents = document.querySelectorAll('.content');
const listItems = document.querySelectorAll('nav ul li');
listItems.forEach((item, idx) => {
item.addEventListener('click', () => {
hideAllContents();
hideAllItems();
item.classList.add('active');
contents[idx].classList.add('show');
})
})
function hideAllContents() {
contents.forEach(content => content.classList.remove('show'));
}
function hideAllItems() {
listItems.forEach(item => item.classList.remove('active'));
}
最后, 完整的网页演示可见 此处
