JS轮播图实现自动轮播、悬浮停止轮播、点击切换，下方指示器与图片联动效果

代码：

<!DOCTYPE html>
<html lang="zh-CN">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><style>.context{width: 600px;margin: 0 auto;text-align: center;}.context img{width: 600px;height: 300px;}.container{position: relative;}.yuan{width: 50px;height: 50px;position: absolute;right: 0;top: 43%;line-height: 46px;font-size: 28px;font-weight: bold;background-color: white;border: 1px solid black;border-radius: 50px;color: black;opacity: 0.5;display: none;cursor: pointer;}.leftyuan{width: 50px;height: 50px;position: absolute;left: 0;top: 43%;line-height: 46px;font-size: 28px;font-weight: bold;background-color: white;border: 1px solid black;border-radius: 50px;color: black;opacity: 0.5;display: none;cursor: pointer;}ul li{list-style: none;float: left;margin: 0 10px;width: 35px;height: 30px;line-height: 30px;background-color: #eeeeee;cursor: pointer;}ul{position: absolute;bottom: 0;left: 21%;}li:hover{background-color: #fea500}.orange{background-color: #fea500;}</style>
</head>
<body><div class="context">  <div class="container"><img src="./image/1.jpg" alt=""><div class="yuan">></div><div class="leftyuan"><</div><ul><li class="orange">1</li><li>2</li><li>3</li><li>4</li><li>5</li></ul></div><!-- <button>上一张</button><button>下一张</button> --></div><script>let btns = document.querySelectorAll('button')let simg = document.querySelector('img')let container = document.querySelector('.container')let yuan = document.querySelector('.yuan')let leftyuan = document.querySelector('.leftyuan')let li = document.querySelectorAll('ul li')let b=0li.forEach(item=>{item.onclick=function(){simg.src=`./image/${item.innerText}.jpg`jx(item.innerText)}})// 控制图片变化变量let d1=setInterval(djq,1000)function djq(){// clearInterval(d1)if(b==5){b=0}simg.src=`./image/${++b}.jpg`li.forEach(item=>{item.classList.remove('orange')if(b==item.innerHTML){item.classList.add('orange')}})if(b==5){b=0}}function jx(c){b=cclearInterval(d1)simg.src=`./image/${b}.jpg`li.forEach(item=>{item.classList.remove('orange')if(b==item.innerHTML){item.classList.add('orange')}})if(b==5){b=0}}yuan.onclick=function(){if(b>=5){b=0}simg.src=`./image/${++b}.jpg`li.forEach(item=>{item.classList.remove('orange')if(b==item.innerHTML){item.classList.add('orange')}})}leftyuan.onclick=function(){if(b<=1){b=6}simg.src=`./image/${--b}.jpg`li.forEach(item=>{item.classList.remove('orange')if(b==item.innerHTML){item.classList.add('orange')}})}container.onmouseenter= function(){clearInterval(d1)yuan.style.display='block'leftyuan.style.display='block'}container.onmouseleave= function(){// console.log('b');d1 =setInterval(djq,1000)yuan.style.display='none'leftyuan.style.display='none'}// btns[0].onclick=function(){//     if(b<=1){//         b=6//     }//     simg.src=`./image/${--b}.jpg`// }// btns[1].onclick=function(){//     if(b>=5){//         b=0//     }//     simg.src=`./image/${++b}.jpg`// }</script>
</body>
</html>

效果图：