• JS图片切换效果


     源地址: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{408px; height:168px; overflow:hidden;position:relative;}
    .slider{position:absolute;}
    .slider li{ list-style:none;display:inline;}
    .slider img{ 408px; height:168px; 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>
    <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>

    如果图片是动态的可以给img标签增加runate=“server”  id=“image1” 后天就可以给image的src进行赋值了

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  • 原文地址:https://www.cnblogs.com/smile-wei/p/3825874.html
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