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{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>
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
posted on 2014-07-05 16:05 小东北阅读(3585) 评论(0) 编辑收藏举报