// 列表布局，图片左浮动，外侧容器设置overflow:hidden;
// 组合使用构造函数模式(对象不共享的数据)和原型模式(对象共享的数据)
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="utf-8">
5 <style type="text/css" media="screen">
6 * { margin:0; padding:0; font-size: 14px;}
7 .slider { width:550px; height:200px; margin:50px auto 0; overflow: hidden;}
8 .slider ul { width:10000px; list-style:none; }
9 .slider li { float: left; }
10 .slider li img { width:550px; text-align: center;}
11 #slider-nav { width:550px; margin:30px auto; text-align: center;}
12 #slider-nav button { height:34px; line-height: 34px; width:75px; text-align: center; cursor:pointer; margin:0 20px;}
13 </style>
14 </head>
15 <body>
16 <div class="slider">
17 <ul>
18 <li><img src="http://www.gbtags.com/gb/networks/uploads/afb73f09-8334-46b2-ad66-4abeb7c67a0a/images/gbtags1.jpg" alt="image"></li>
19 <li><img src="http://www.gbtags.com/gb/networks/uploads/afb73f09-8334-46b2-ad66-4abeb7c67a0a/images/gbtags2.jpg" alt="image"></li>
20 <li><img src="http://www.gbtags.com/gb/networks/uploads/afb73f09-8334-46b2-ad66-4abeb7c67a0a/images/gbtags3.jpg" alt="image"></li>
21 <li><img src="http://www.gbtags.com/gb/networks/uploads/afb73f09-8334-46b2-ad66-4abeb7c67a0a/images/gbtags4.jpg" alt="image"></li>
22 </ul>
23 </div>
24
25 <div id="slider-nav">
26 <button data-direction="prev">« 上一个</button><button data-direction="next">下一个 »</button>
27 </div>
28 </body>
29 <script src="http://cdn.gbtags.com/jquery/2.1.1/jquery.min.js"></script>
30 <script>
31
32 function Slider(container,nav){ // 构造Slider()函数;
33 this.container = container; // 定义一系列局部变量;
34 this.nav = nav;
35 this.imgs = this.container.find(‘img‘);
36 this.imgWidth = this.imgs[0].width;
37 this.imgsLen = this.imgs.length;
38 this.current = 0;
39 };
40
41 Slider.prototype.transition = function(){ // 使用prototype来定义transition()方法;
42 this.container.animate({ // 编写外包围容器(ul)的运动方向及运动长度;
43 ‘margin-left‘:-(this.current*this.imgWidth)
44 });
45 };
46
47 Slider.prototype.setCurrent = function(dir){ // 使用prototype来定义setCurrent()方法;
48 var pos = this.current;
49 pos += (~~(dir === ‘next‘) || -1); // 使用"~~"进行类型转换,转换成数字类型; ~~true == 1; ~~false == 0;
50 this.current = (pos < 0) ? this.imgsLen - 1 : pos % this.imgsLen;
51 return pos;
52 };
53
54 $(function(){
55 var container = $(‘.slider‘).children(‘ul‘), // 定义container变量的值;
56 slider = new Slider(container, $(‘#slider-nav‘)); // 实例化Slider()函数并传参;
57
58 slider.nav.find(‘button‘).on(‘click‘,function(){ // 找到触发按钮并绑定事件;
59 slider.setCurrent($(this).data(‘direction‘)); // 调用setCurrent()函数并传入按钮的data-direction的值;
60 slider.transition(); // 调用transition()方法,使幻灯片运动;
61 })
62 });
63
64 </script>
65 </html>
时间： 2024-08-10 08:03:17