本文实例为大家分享了js实现轮播图效果的具体代码，供大家参考，具体内容如下

1、html部分

<div id="box"> <ul> <li class="show"><img src="img/1.jpg" alt=""></li> <li><img src="img/2.jpg" alt=""></li> <li><img src="img/3.jpg" alt=""></li> <li><img src="img/4.jpg" alt=""></li> <li><img src="img/5.jpg" alt=""></li> <li><img src="img/6.jpg" alt=""></li> </ul> <img src="img/l.png" alt="" id="lef"> <img src="img/r.png" alt="" id="rig"> <ol> <li class="focus" data-i = "0"></li> <li data-i = "1"></li> <li data-i = "2"></li> <li data-i = "3"></li> <li data-i = "4"></li> <li data-i = "5"></li> </ol></div>

2、js部分

<script> var liList = document.querySelectorAll("#box ul li") var olList = document.querySelectorAll("#box ol li") var rig = document.getElementById("rig") var lef = document.getElementById("lef") var index = 0 function setLi(){ for(var i = 0;i <liList.length;i++){ liList[i].className = "" olList[i].className = "" } liList[index].className = "show" olList[index].className = "focus" } // 向右 rig.onclick = function(){ if(index !== 5){ index++ } if(index === 5){ index = 0 } setLi() } //向左 lef.onclick = function(){ if(index !== 0){ index-- } if(index === 0){ index = 5 } setLi() } //圆点 for(var i = 0;i < olList.length;i++){ olList[i].onclick = function(){ index = this.getAttribute("data-i") setLi() } } //计时 var autoPlay = setInterval( function(){ rig.click() },3000) //鼠标划上停止播放 var box = document.querySelector("div") box.onmouseenter = function(){ clearInterval(autoPlay) } // 鼠标移走继续播放 box.onmouseleave = function(){ autoPlay = setInterval( function(){ rig.click() },3000) }</script>

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。