通过案例的形式，配合较为详细的注释，比较简洁的将步骤写了出来，代码仅供参考，希望对大家有所帮助，有任何疑问可以随时联系我。
效果图：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>音乐轮播图</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
li {
list-style: none;
}
.main {
width: 700px;
margin: auto;
background: #000;
}
.slides {
height: 320px;
position: relative;
}
.slides ul li {
/* display: none; */
position: absolute;
top: 0;
left: 0;
opacity: 0;
/* 这里实现淡入淡出的关键 */
transition: all 0.3s;
}
.slides li.active {
/* display: block; */
opacity: 1;
}
.slides .extra {
width: 700px;
height: 53px;
line-height: 53px;
position: absolute;
bottom: 0px;
background-color: rgba(0, 0, 0, 0.8);
z-index: 10;
}
.slides .extra h3 {
width: 82%;
margin: 0;
margin-right: 20px;
padding-left: 20px;
color: #98e404;
font-size: 28px;
float: left;
font-weight: 500;
font-family: 'Microsoft Yahei', Tahoma, Geneva;
}
.slides .extra a {
width: 30px;
height: 29px;
display: block;
float: left;
margin-top: 12px;
margin-right: 3px;
background-image: url(./assets/icon_focus_switch.png);
}
.slides .extra .prev {
background-position: 0 0;
}
.slides .extra .prev:hover {
background-position: -30px 0;
}
.slides .extra .next {
background-position: -60px 0;
}
.slides .extra .next:hover {
background-position: -90px 0;
}
.indicator {
padding: 10px 0;
}
.indicator ul {
list-style-type: none;
margin: 0 0 0 4px;
padding: 0;
overflow: hidden;
}
.indicator ul li {
position: relative;
float: left;
width: 60px;
margin: 0 4px 0 5px;
text-align: center;
cursor: pointer;
}
.indicator li img {
display: block;
border: 0;
text-align: center;
width: 60px;
}
.indicator li .mask {
width: 60px;
height: 60px;
position: absolute;
top: 0;
left: 0;
background-color: rgba(0, 0, 0, 0.4);
}
.indicator li .border {
display: none;
width: 54px;
position: absolute;
bottom: 0;
left: 0;
z-index: 20;
border: 3px solid #98e404;
}
/* li里面的mask 和 border 刚开始都是显示的 */
/* 我们写一个样式css */
.indicator .active .mask {
display: none;
}
.indicator .active .border {
display: block;
}
</style>
</head>
<body>
<div class="main">
<div class="slides">
<ul>
<li class="active">
<a href="#"><img src="./assets/b_01.jpg" alt="第1张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_02.jpg" alt="第2张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_03.jpg" alt="第3张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_04.jpg" alt="第4张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_05.jpg" alt="第5张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_06.jpg" alt="第6张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_07.jpg" alt="第7张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_08.jpg" alt="第8张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_09.jpg" alt="第9张图的描述信息" /></a>
</li>
<li>
<a href="#"><img src="./assets/b_10.jpg" alt="第9张图的描述信息" /></a>
</li>
</ul>
<div class="extra">
<h3>第1张图的描述信息</h3>
<a class="prev" href="javascript:;"></a>
<a class="next" href="javascript:;"></a>
</div>
</div>
<div class="indicator">
<ul>
<li class="active">
<img src="assets/s_01.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_02.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_03.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_04.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_05.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_06.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_07.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_08.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_09.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
<li>
<img src="assets/s_10.jpg" />
<span class="mask"></span>
<span class="border"></span>
</li>
</ul>
</div>
</div>
<script>
/*思路
*/
//封装函数，方便下面调用
function fz() {
//利用排他思想，去除之前选中的图片
document.querySelector('.indicator .active').classList.remove('active')
// 给现在执行的图片增加
min[index].classList.add('active')
document.querySelector('.slides .active').classList.remove('active')
max[index].classList.add('active')
}
//1.获取元素
let prev = document.querySelector('.prev') //上一个
let next = document.querySelector('.next') //下一个
let max = document.querySelectorAll('.slides li') //大图
let min = document.querySelectorAll('.indicator li') //小图
let index = 0 //声明一个全局变量，方便一起同步同一张图片
//2.1 鼠标移入每一个小li
for (let i = 0; i < min.length; i++) {
min[i].onmouseenter = function () {
index = i
fz()
}
}
//2.2 下一页
next.onclick = function () {
index == min.length - 1 ? index = 0 : index++
fz()
}
//2.3 上一页
prev.onclick = function () {
index == 0 ? index = min.length - 1 : index--
fz()
}
//轮播图
let rotation = setInterval(function () {
next.onclick()
}, 1000)
//鼠标停留清除轮播图
for (let i = 0; i < max.length; i++) {
max[i].onmouseenter = function () {
clearInterval(rotation)
}
}
//鼠标移开继续轮播图
for (let i = 0; i < max.length; i++) {
max[i].onmouseleave = function () {
// 这里不能重复申明rotation，不然会覆盖轮播图中的，然后停留就不能清除轮播图
rotation = setInterval(function () {
next.onclick()
}, 500)
}
}
</script>
</body>
</html>
