Home > Article > Web Front-end > Implementing carousel effect with thumbnails based on JavaScript

Implementing carousel effect with thumbnails based on JavaScript

高洛峰Original: 2017-01-12 10:53:001501browse

First take a look at the js carousel renderings

Code:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
*{padding:0;margin:0;}
#content {width:400px;height:500px;margin:10px auto;position:relative;border:1px solid #000;color:red;font-size:20px;}
#title, #bottom{position:absolute;width:400px;height:30px;line-height:30px;text-align:center;font-size:20px;background:#f1f1f1;}
#bottom{bottom:0;cursor:pointer;}
#bottom span{display:inline-block;width:15px;height:15px;border-radius:15px;background:#000;text-align:center;line-height:15px;position:relative;}
#bottom span.active{background: #FFFF33;}
#bottom span div {position:absolute;width:110px;height:110px;top:-125px;left:-46px;display:none;}
#bottom span div:after{content:&#39;&#39;;position:absolute;left:49px;bottom:-12px;border-top:7px solid #fff;border-right:5px solid transparent;border-bottom:5px solid transparent;border-left:5px solid transparent;}
#bottom span img {width:100px;height:100px;border:5px solid #fff;}
#left, #right{position:absolute;width:60px;height:60px;border-radius:60px;line-height:60px;font-size:60px;background:#FFFF66;font-weight:bold;text-align:center;top:50%;margin-top:-25px;color:#fff;cursor:pointer;filter(opacity:70);opacity:0.7;}
#left:hover,#right:hover{filter(opacity:100);opacity:1;}
#left{left:0px;}
#right{right:0px;} 
#img{width:400px;height:500px;}
</style>
<script>
window.onload = function () {
  var bottom = $(&#39;bottom&#39;),title = $(&#39;title&#39;),
    img = $(&#39;img&#39;),left = $(&#39;left&#39;),right = $(&#39;right&#39;);
  var aSpan = bottom.getElementsByTagName(&#39;span&#39;);
  var aDiv = bottom.getElementsByTagName(&#39;div&#39;);
  var arr = [&#39;图片一&#39;,&#39;图片二&#39;,&#39;图片三&#39;, &#39;图片四&#39;];
  var num = 0;
  // 初始化
  picTab();
 
  // 点击下一张
  right.onclick = function () {
    if (num === aDiv.length - 1) num = -1;
    num++;
    picTab();
  }
 
  // 点击上一张
  left.onclick = function () {
    if (num === 0) num = aDiv.length;
    num--;
    picTab();
  }
 
  function picTab() {
    title.innerHTML = arr[num];
    img.src = &#39;img/&#39; + (num + 1) + &#39;.png&#39;;
    for ( var i = 0; i < aSpan.length; i++ ) {
      aSpan[i].className = &#39;&#39;;
    }
    aSpan[num].className = &#39;active&#39;;
  }
  // 鼠标移入移出显示缩略图
  for ( var i = 0; i < aSpan.length; i++ ) {
    aSpan[i].index = i;
    aSpan[i].onmouseover = function () {
      aDiv[this.index].style.display = &#39;block&#39;;
    }
    aSpan[i].onmouseout = function () {
      aDiv[this.index].style.display = &#39;none&#39;;
    }
    aSpan[i].onclick = function () {
      num = this.index;
      picTab();
    }
  }
  function $(id) { return document.getElementById(id);}
}
</script>
</head>
<body>
<div id="content">
  <div id="title">带缩略图的轮播</div>
  <div id="left"><</div>
  <div id="right">></div>
  <div id="bottom">
    <span><div><img  src="img/1.png"/ alt="Implementing carousel effect with thumbnails based on JavaScript" ></div></span>
    <span><div><img  src="img/2.png"/ alt="Implementing carousel effect with thumbnails based on JavaScript" ></div></span>
    <span><div><img  src="img/3.png"/ alt="Implementing carousel effect with thumbnails based on JavaScript" ></div></span>
    <span><div><img  src="img/4.png"/ alt="Implementing carousel effect with thumbnails based on JavaScript" ></div></span>
  </div>
  <img  src="" id="img"/ alt="Implementing carousel effect with thumbnails based on JavaScript" >
</div>
</body>
</html>

The above is the entire content of this article, I hope it will be helpful to everyone’s study , I also hope that everyone will support the PHP Chinese website.

For more articles related to implementing carousel effects with thumbnails based on JavaScript, please pay attention to the PHP Chinese website!

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：js picture carousel (5 pictures)Next article：js picture carousel (5 pictures)

See more

Implementing carousel effect with thumbnails based on JavaScript

Related articles