首先给出HTML代码，要注意轮播图片表(#list)末尾加上第一个图片1.jpg，在首部加上最后一个图片5.jpg。
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>首尾轮播</title>
6 <link rel="stylesheet" href="首尾轮播.css">
7 <script src="首尾轮播.js"></script>
8 </head>
9 <body>
10 <div id="container">
11 <div id="list" style="left: -500px">
12 <div><a href="#"><img src="../imgs/5.jpg" alt=""></a></div>
13 <div><a href="#"><img src="../imgs/1.jpg" alt=""></a></div>
14 <div><a href="#"><img src="../imgs/2.jpg" alt=""></a></div>
15 <div><a href="#"><img src="../imgs/3.jpg" alt=""></a></div>
16 <div><a href="#"><img src="../imgs/4.jpg" alt=""></a></div>
17 <div><a href="#"><img src="../imgs/5.jpg" alt=""></a></div>
18 <div><a href="#"><img src="../imgs/1.jpg" alt=""></a></div>
19 </div>
20
21 <div class="arrow" id="prev"><</div>
22 <div class="arrow" id="next">></div>
23
24
25 </div>
26
27 </body>
28
29 </html>
接下来给出css和js代码，大家可以酌情根据图片的大小、数量、宽度，调整container、list的参数，这也是封装JS所要考虑的参数。
1 *{
2 margin: 0;
3 padding: 0;
4 }
5
6 #container{
7 height: 400px;
8 width: 500px;
9 margin: 0 auto;
10 position: relative;
11 overflow: hidden;
12 border: 1px solid black;
13 }
14
15 #list>div {
16 float: left;
17 }
18 #list{
19 position: absolute;
20 height: 400px;
21 width: 3600px;
22
23 }
24
25 #list img{
26 height: 400px;
27 width: 500px;
28 }
29 .arrow {
30 user-select:none;
31 position: absolute;
32 top:150px;
33 z-index: 2;
34 background-color: #aaa;
35 height: 100px;
36 width: 80px;
37 cursor: pointer;
38 opacity: 0.5;
39 display: none;
40 line-height: 100px;
41 text-align: center;
42 color: #222;
43 font-size: 3em;
44
45 }
46 #container:hover .arrow{
47 display: block;
48 }
49 #prev{
50 left:20px;
51 }
52
53 #next{
54 right: 20px;
55 }
在JS中，我们可以通过改变speed变量来控制图片切换的速度....这里用的是 element.style.transition来控制的过渡效果.
1 window.onload=function(){
2 var container = document.getElementById('container');
3 var list = document.getElementById('list');//获取图片容器
4 var prev = document.getElementById('prev');//向前按钮
5 var next = document.getElementById('next');//向后按钮
6 var nowP = 1; //显示位置
7 var judge = null; //执行权
8 var speed = 0.1; // 切换速度 秒
9 prev.onclick=function(){
10 if(!judge){
11 judge = setTimeout(function(){
12 if(nowP==1){setTimeout(function(){
13 list.style.transition="left 0s";
14 list.style.left = "-2500px";
15 nowP = 5;},speed*1000);} //当到达图片表左边缘时与动画同步切换
16 list.style.transition = "left "+speed+"s";
17 move(500);
18 nowP--;
19 judge = null;
20 },speed*1000);
21 }
22 };
23 ne