原生JS仿小米轮播图(最新版易懂)，供大家参考，具体内容如下
本次内容主要可实现的效果:
- 自动轮播
- 可点击上一张 下一张进行图片的切换
- 点击右下方小圆点进行图片切换
代码部分:
H5:
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<div class="wrap">
<ul class="list">
<li class="item active"><img src="img/001.jpg" alt=""></li>
<li class="item"><img src="img/002.jpg"" alt=""></li>
<li class="item"><img src="img/001.jpg" alt=""></li>
<li class="item"><img src="img/002.jpg" alt=""></li>
<li class="item"><img src="img/001.jpg" alt=""></li>
</ul>
<!-- 小圆点 -->
<ul class="pointList">
<li class="point active" data-index="0"></li>
<li class="point" data-index="1"></li>
<li class="point"data-index="2"></li>
<li class="point"data-index="3"></li>
<li class="point"data-index="4"></li>
</ul>
<button type="button" class="btn" id="goPre"><</button>
<button type="button" class="btn" id="goNext">></button>
</div>
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CSS部分:
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<style>
.wrap {
width: 800px;
height: 400px;
position: relative;
}
.list {
width: 800px;
height: 400px;
list-style: none;
position: relative;
padding-left: 0px;
}
.item {
position: absolute;
width: 100%;
height: 100%;
color: white;
font-size: 50px;
opacity: 0.6;
transform: all .8s;
}
.item img{
width: 800px;
height: 400px;
}
.btn {
width: 50px;
height: 100px;
position: absolute;
top: 150px;
z-index: 100;
}
#goPre {
left: 0px;
}
#goNext {
right: 0px;
}
.item.active {
opacity: 1;
z-index: 10;
}
.pointList{
padding-left: 0;
list-style: none;
position: absolute;
right: 20px;
bottom: 20px;
z-index: 1000;
}
.point{
width: 10px;
height: 10px;
background-color: rgba(0,0,0,0.4);
border-radius: 50%;
float: left;
margin-right: 16px;
border-style: solid;
border-width: 2px;
border-color: rgba(255,255,255, 0.6);
cursor: pointer;
}
.point.active{
background-color: rgba(255,255,255,0.4);
}
</style>
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JS部分
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<script>
//获取节点
var items = document.getElementsByClassName('item')//图片
var goPreBtn = document.getElementById('goPre');
var goNextBtn = document.getElementById('goNext');
//获取点
var points=document.getElementsByClassName('point');
var time=0;//定时器图片跳转参数
var index = 0; //表示第几张图片在展示
//可以展示第几个点
var clearActive=function(){
for(var i=0;i<items.length;i++){
items[i].className='item';
points[i].className='point';
}
}
var goIndex=function(){
clearActive();
items[index].className='item active';
points[index].className='point active';
}
var goNext=function(){
if(index<4){
index++;
}else{
index=0;
}
goIndex();
}
var goPre=function(){
if(index==0){
index=4;
}else{
index--;
}
goIndex();
}
//点击下一张切换图片
goNextBtn.addEventListener('click' ,function(){
goNext();
time=0;
})
//点击上一张进行切换图片
goPreBtn.addEventListener('click' ,function(){
goPre();
time=0;
})
for(var i=0;i<points.length;i++){
points[i].addEventListener('click',function(){
var pointIndex=this.getAttribute('data-index');
index=pointIndex;
goIndex();
time=0;
})
}
//自动轮播定时器
setInterval(function(){
time++;
if(time==20){
goNext();
time=0;
}
},100)
</script>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_45846235/article/details/108681458