完美实现js焦点轮播效果(一)

2019-11-19 17:16:27

字体：大中小

来源：转载

供稿：网友

最简单轮播形式，js中通过pic的display属性控制变换，也可通过调整Pic的margin-Left

效果如图：

实现代码：

<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <style type="text/css">*{ margin: 0; padding: 0; list-style: none; text-decoration: none;} .wrap{ width: 490px; height: 170px; margin: 100px auto; border: 1px solid #000000; position: relative; overflow: hidden; } #pic{ width: 2450px; height: 170px; } #pic li{ float: left; } #list{ position: absolute; bottom: 10px; left:150px ; } #list li{ float: left; width: 15px; height: 15px; background: #fff; margin: 0 10px; border-radius: 50%; cursor: pointer; } #list .on{ background: #e27a00; } .Prev{ top: 30px; left: 0; } .Next{ top: 30px; right: 0; } .Prev,.Next{ position: absolute; font-size: 80px; font-weight: bold; color:#fff ; -webkit-transition: all 0.35s ease-in-out } .Next:hover, .Prev:hover{ background: #ccc; background: rgba(204, 204, 204, 0.4); } .show{ display: block; } .hidden{ display: none; } </style> <script type="text/javascript"> window.onload=function(){ var pic=document.getElementById('pic').getElementsByTagName('li'); var list=document.getElementById('list').getElementsByTagName('li'); var prev=document.getElementById('Prev'); var next=document.getElementById('Next'); var index=0; var timer=null; auto(); for(var i=0;i<list.length;i++){ list[i].index=i; list[i].onmouseover=function(){  clearInterval(timer);  Change(this.index); } list[i].onmouseout=function(){  auto(); } pic[i].onmouseover=function(){  clearInterval(timer); } pic[i].onmouseout=function(){  auto(); } } prev.onclick=function(){ clearInterval(timer); index--; if(index<=0){  index=list.length-1; } Change(index); } next.onclick=function(){ clearInterval(timer); index++; if(index>=list.length){  index=0; } Change(index); } prev.onmousemove=function(){ clearInterval(timer); } prev.onmouseout=function(){ auto(); } next.onmouseover=function(){ clearInterval(timer); } next.onmouseout=function(){ auto(); } function Change(curIndex){  for(var i=0;i<list.length;i++){  list[i].className="";  pic[i].className="hidden";  }  list[curIndex].className="on";  pic[curIndex].className="show"; index=curIndex; } function auto(){ timer=setInterval(function(){  index++;  if(index>=list.length){  index=0  }  Change(index); },2000); } } </script></head><body><div class="wrap" id="wrap"> <ul id="pic"> <li class="show"><a href="#"><img src="/54111cd9000174cd04900170.jpg" alt=""/></a></li> <li><a href="#"><img src="/54111dac000118af04900170.jpg" alt=""/></a></li> <li><a href="#"><img src="/54111d9c0001998204900170.jpg" alt=""/></a></li> <li><a href="#"><img src="/54111d8a0001f41704900170.jpg" alt=""/></a></li> <li><a href="#"><img src="/54111d7d00018ba604900170.jpg" alt=""/></a></li> </ul> <ul id="list"> <li class="on"></li> <li></li> <li></li> <li></li> <li></li> </ul> <a href="javascript:;" class="Prev" id="Prev"><</a> <a href="javascript:;" class="Next" id="Next">></a></div></body></html>

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