Pure JS to implement carousel chart-JS Tutorial-php.cn

Pure JS to implement carousel chart

高洛峰

Release： 2017-02-23 17:33:05

Original

1780 people have browsed it

I have been watching js animations these days, and today I got another carousel image, which is implemented using pure js, but it is not beautified. If you need it, you can beautify it yourself

The following code ：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>图片轮播的效果</title>
  <style type="text/css">
    * {
      margin: 0;
      padding: 0;
      text-decoration: none;
    }
    body {
      padding: 20px;
    }
    #container {
      position: relative;
      width: 600px;
      height: 400px;
      border: 3px solid #333;
      overflow: hidden;
    }
    #list {
      position: absolute;
      z-index: 1;
      width: 4200px;
      height: 400px;
    }
    #list img {
      float: left;
      width: 600px;
      height: 400px;
    }
    #buttons {
      position: absolute;
      left: 250px;
      bottom: 20px;
      z-index: 2;
      height: 10px;
      width: 100px;
    }
    #buttons span {
      float: left;
      margin-right: 5px;
      width: 10px;
      height: 10px;
      border: 1px solid #fff;
      border-radius: 50%;
      background: #333;
      cursor: pointer;
    }
    #buttons .on {
      background: orangered;
    }
    .arrow {
      position: absolute;
      top: 180px;
      z-index: 2;
      display: none;
      width: 40px;
      height: 40px;
      font-size: 36px;
      font-weight: bold;
      line-height: 39px;
      text-align: center;
      color: #fff;
      background-color: RGBA(0, 0, 0, .3);
      cursor: pointer;
    }
    .arrow:hover {
      background-color: RGBA(0, 0, 0, .7);
    }
    #container:hover .arrow {
      display: block;
    }
    #prev {
      left: 20px;
    }
    #next {
      right: 20px;
    }
  </style>
</head>
<body>
<p id="container">
  <p id="list" style="left: -600px;">
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s018.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s018.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s019.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s020.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s021.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s022.jpg" alt="无缝滚动" />
    <img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s022.jpg" alt="无缝滚动" />
  </p>
  <p id="buttons">
    <span index="1" class="on"></span>
    <span index="2"></span>
    <span index="3"></span>
    <span index="4"></span>
    <span index="5"></span>
  </p>
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" id="prev" class="arrow"><</a>
  <a href="javascript:;" rel="external nofollow" rel="external nofollow" id="next" class="arrow">></a>
</p>
<script type="text/javascript">
  window.onload=function(){
    var container = document.getElementById("container");
    var list = document.getElementById("list");
    var buttons = document.getElementById("buttons").getElementsByTagName(&#39;span&#39;);
    var prev = document.getElementById("prev");
    var next = document.getElementById("next");
    var index = 1;
   function animate(offset){
     var newLeft = parseInt(list.style.left) + offset;
     list.style.left = newLeft + &#39;px&#39;;
     if(newLeft<-3000){
       list.style.left= -600 +&#39;px&#39;;
     }
     if(newLeft>-600){
       list.style.left = -3000 + &#39;px&#39;;
     }
   }
   function buttonsshow(){
     for(var i =0; i<buttons.length;i++){
       if(buttons[i].className == &#39;on&#39;){
         buttons[i].className=&#39;&#39;;
       }
     }
     buttons[index-1].className=&#39;on&#39;;
   }
   prev.onclick = function(){
     index-=1;
     if(index<1)
     {
       index=5;
     }
     buttonsshow();
     animate(600);
   };
   next.onclick = function(){
     index+=1;
     if(index>5){
       index=1;
     }
     buttonsshow();
     animate(-600);
   };
   //自动播放
   var timer;
    function play(){
      timer= setInterval(function(){
        next.onclick();
      },1000)
    }
    play();
    function stop(){
      clearInterval(timer);
    }
    container.onmouseover=stop;
    container.onmouseout=play;
for(var i=0; i<buttons.length; i++){
  ( function(i){
      buttons[i].onclick=function(){
        var clickindex= parseInt(this.getAttribute(&#39;index&#39;));
        var offset = 600*(index-clickindex);
        animate(offset);
        index = clickindex;
        buttonsshow();
      }
  })(i);
}
  }
</script>
</body>
</html>

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The above is the pure JS implementation of the carousel chart introduced by the editor. I hope it will be helpful to you. If you have any questions, please Leave me a message and I will reply to you in time. I would also like to thank you all for your support of the PHP Chinese website!

For more articles related to pure JS implementation of carousel images, please pay attention to the PHP Chinese website!