jQuery implementation of a simple carousel

HTML code:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Carousel Practice</title>
<link rel="stylesheet" href="css/css.css" rel="external nofollow" type="text/css"/>
</head>
<body>
<ul class="back">      <!-- Background image -->
　　<li class="l1></li>
　　<li class="l2></li>
　　<li class="l3></li>
　　<li class="l4></li>
　　<li class="l5></li>
</ul>
<ul class="point">     <!-- Control button -->
　　<li class="active"></li>
　　<li></li>
　　<li></li>
　　<li></li>
　　<li></li>
</ul>
<div class="btn">     <!-- left and right control buttons -->
　　<span class="prev"></span>
　　<span class="next"></span>
</div>
</body>
<script src="js/jquery-1.7.2.js"></script>
<script src="js/jq.js"></script>
</html>

css code:

*{margin:0; padding: 0;}
ul li{list-style: none;}
.back{height: 400px; overflow: hidden; margin-top:100px;}
.back li{width: 100%; height: 400px; margin:0 auto;}
.back li.l1{background: red;}
.back li.l2{background: yellow;}
.back li.l3{background: blue;}
.back li.l4{background: black;}
.back li.l5{background: green;}
.point{text-align: center; margin-top: -30px;}
.point li{ width: 20px; height: 20px; border:2px solid #fff; border-radius: 10px; box-sizing:border-box; display: inline-block;}
.point li.active{background: #fff;}
.btn{ position: relative;}
.btn span{ display: inline-block; vertical-align: top; width: 100px; height: 100px; background: rgba(0,0,0,.5); position: absolute; top:-235px; cursor: pointer;}
.btn .prev {left: 0}
.btn .next { right: 0;}

js code:

$(function() {
　　function banner(a, b, c, d, e) {         // a is the background image, b is active, c is the corresponding button of the background, d is the previous page, e is the next page
　　　　index=0;
　　　　len=$(a).length-1;
　　　　function teb(index){
　　　　　　$(c).eq(index).addClass(b).siblings('').removeClass(b);
　　　　　　$(a).eq(index).fadeIn(300).addClass('curr').siblings('').fadeOut(300).removeClass('curr');
　　　　};
　　　　$(c).click(function(){
　　　　　　index=$(this).index();
　　　　　　teb(index);
　　　　});
　　　　$(d).click(function(){
　　　　　　index--;
　　　　　　if(index<0){
　　　　　　　　index=len;
　　　　　　};
　　　　　　teb(index);
　　　　});
　　　　$(e).click(function(){
　　　　　　index++;
　　　　　　if(index>len){
　　　　　　　　index=0;
　　　　　　};
　　　　　　teb(index);
　　　　});
　　　　function timeRun(){
　　　　　　time=setInterval(function(){
　　　　　　　　index++;
　　　　　　　　if(index>len){
　　　　　　　　　　index=0;
　　　　　　　　};
　　　　　　　　teb(index);
　　　　　　},3000);
　　　　};
　　　　timeRun();
　　};
　　banner('.back>li','active','.point>li','.prev','.next');
});

That's all for this article. I hope the content of this article can bring you some help in learning or work, and I also hope to support the呐喊 tutorial more!

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Basic Tutorial