转自：http://www.codefans.net/jscss/code/4699.shtml
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>JavaScript图片切换展示效果</title> </head> <body> <style type="text/css"> .container, .container *{margin:0; padding:0;} .container{width:408px; height:168px; overflow:hidden;position:relative;} .slider{position:absolute;} .slider li{ list-style:none;display:inline;} .slider img{ width:408px; height:168px; display:block;} .slider2{width:2000px;} .slider2 li{float:left;} .num{ position:absolute; right:5px; bottom:5px;} .num li{float: left;color: #FF7300;text-align: center;line-height: 16px;width: 16px;height: 16px;font-family: Arial;font-size: 12px;cursor: pointer;overflow: hidden;margin: 3px 1px;border: 1px solid #FF7300;background-color: #fff;} .num li.on{color: #fff;line-height: 21px;width: 21px;height: 21px;font-size: 16px;margin: 0 1px;border: 0;background-color: #FF7300;font-weight: bold;} </style> <div class="container" id="idTransformView2"> <ul class="slider slider2" id="idSlider2"> <li><img src="/jscss/demoimg/201311/01.jpg"/></li> <li><img src="/jscss/demoimg/201311/02.jpg"/></li> <li><img src="/jscss/demoimg/201311/03.jpg"/></li> </ul> <ul class="num" id="idNum2"> <li>1</li> <li>2</li> <li>3</li> </ul> </div> <script type="text/javascript"> var $ = function (id) { return "string" == typeof id ? document.getElementById(id) : id; }; var Class = { create: function() { return function() { this.initialize.apply(this, arguments); } } } Object.extend = function(destination, source) { for (var property in source) { destination[property] = source[property]; } return destination; } var TransformView = Class.create(); TransformView.prototype = { //容器对象,滑动对象,切换参数,切换数量 initialize: function(container, slider, parameter, count, options) { if(parameter <= 0 || count <= 0) return; var oContainer = $(container), oSlider = $(slider), oThis = this; this.Index = 0;//当前索引 this._timer = null;//定时器 this._slider = oSlider;//滑动对象 this._parameter = parameter;//切换参数 this._count = count || 0;//切换数量 this._target = 0;//目标参数 this.SetOptions(options); this.Up = !!this.options.Up; this.Step = Math.abs(this.options.Step); this.Time = Math.abs(this.options.Time); this.Auto = !!this.options.Auto; this.Pause = Math.abs(this.options.Pause); this.onStart = this.options.onStart; this.onFinish = this.options.onFinish; oContainer.style.overflow = "hidden"; oContainer.style.position = "relative"; oSlider.style.position = "absolute"; oSlider.style.top = oSlider.style.left = 0; }, //设置默认属性 SetOptions: function(options) { this.options = {//默认值 Up: true,//是否向上(否则向左) Step: 5,//滑动变化率 Time: 10,//滑动延时 Auto: true,//是否自动转换 Pause: 2000,//停顿时间(Auto为true时有效) onStart: function(){},//开始转换时执行 onFinish: function(){}//完成转换时执行 }; Object.extend(this.options, options || {}); }, //开始切换设置 Start: function() { if(this.Index < 0){ this.Index = this._count - 1; } else if (this.Index >= this._count){ this.Index = 0; } this._target = -1 * this._parameter * this.Index; this.onStart(); this.Move(); }, //移动 Move: function() { clearTimeout(this._timer); var oThis = this, style = this.Up ? "top" : "left", iNow = parseInt(this._slider.style[style]) || 0, iStep = this.GetStep(this._target, iNow); if (iStep != 0) { this._slider.style[style] = (iNow + iStep) + "px"; this._timer = setTimeout(function(){ oThis.Move(); }, this.Time); } else { this._slider.style[style] = this._target + "px"; this.onFinish(); if (this.Auto) { this._timer = setTimeout(function(){ oThis.Index++; oThis.Start(); }, this.Pause); } } }, //获取步长 GetStep: function(iTarget, iNow) { var iStep = (iTarget - iNow) / this.Step; if (iStep == 0) return 0; if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1); return iStep; }, //停止 Stop: function(iTarget, iNow) { clearTimeout(this._timer); this._slider.style[this.Up ? "top" : "left"] = this._target + "px"; } }; window.onload=function(){ function Each(list, fun){ for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); } }; var objs = $("idNum2").getElementsByTagName("li"); var tv = new TransformView("idTransformView2", "idSlider2", 408, 3, { onStart: function(){ Each(objs, function(o, i){ o.className = tv.Index == i ? "on" : ""; }) },//按钮样式 Up: false }); tv.Start(); Each(objs, function(o, i){ o.onmouseover = function(){ o.className = "on"; tv.Auto = false; tv.Index = i; tv.Start(); } o.onmouseout = function(){ o.className = ""; tv.Auto = true; tv.Start(); } }) } </script> </body> </html>