图片切换例子

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="zzzmytest_Default3" %>

<!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 runat="server">
    <title></title>
    <style type="text/css">
        .container, .container *
        {
            margin: 0;
            padding: 0;
        }
        
        .container
        {
            500px;
            height: 500px;
            overflow: hidden;
            position: relative;
        }
        
        .slider
        {
            position: absolute;
        }
        .slider li
        {
            list-style: none;
            display: inline;
        }
        .slider img
        {
            500px;
            height: 500px;
            display: block;
        }
        
        .slider2
        {
            2000px;
        }
        .slider2 li
        {
            float: left;
        }
        
        .num
        {
            position: absolute;
            right: 5px;
            bottom: 5px;
        }
        .num li
        {
            float: left;
            color: #FF7300;
            text-align: center;
            line-height: 16px;
            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;
            21px;
            height: 21px;
            font-size: 16px;
            margin: 0 1px;
            border: 0;
            background-color: #FF7300;
            font-weight: bold;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div class="container" id="idTransformView2">
        <ul class="slider slider2" id="idSlider2">
            <li>
                <img src="images/1.jpg" alt=""/></li>
            <li>
                <img src="images/2.jpg" alt=""/></li>
            <li>
                <img src="images/3.jpg" alt=""/></li>
        </ul>
        <ul class="num" id="idNum2">
            <li>1</li>
            <li>2</li>
            <li>3</li>
        </ul>
    </div>
    <br />
    </form>

     <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 () {
             alert("asdf");
             function Each(list, fun) {
                 for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
             };

             ////////////////////////test2

             var objs2 = $("idNum2").getElementsByTagName("li");

             var tv2 = new TransformView("idTransformView2", "idSlider2", 500, 3, {
                 onStart: function () { Each(objs2, function (o, i) { o.className = tv2.Index == i ? "on" : ""; }) }, //按钮样式
                 Up: false
             });

             tv2.Start();

             Each(objs2, function (o, i) {
                 o.onmouseover = function () {
                     o.className = "on";
                     tv2.Auto = false;
                     tv2.Index = i;
                     tv2.Start();
                 }
                 o.onmouseout = function () {
                     o.className = "";
                     tv2.Auto = true;
                     tv2.Start();
                 }
             })
         }
</script>
</body>
</html>

原文地址:https://www.cnblogs.com/doosmile/p/2306074.html