// 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>
新闻热点
疑难解答
