轮播问题

滴滴月空雨 2012-04-11 01:24:13



<!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" />

<meta name="keywords" content="JS代码,焦点图,JS广告代码,JS特效代码" />

<meta name="description" content="此代码内容为JavaScript图片切换展示效果，属于站长常用代码，更多焦点图代码请访问懒人图库JS代码频道。" />

<title>JavaScript图片切换展示效果_懒人图库</title>

</head>

<body>

<style type="text/css"> 

.container, .container *{margin:0; padding:0;}

ul{ list-style:none; padding:0px; margin:0px;}

.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:3000px;}

.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="idTransformView">

  <ul class="slider" id="idSlider">

    <li><img src="images/01.jpg"/></li>

    <li><img src="images/02.jpg"/></li>

    <li><img src="images/03.jpg"/></li>

  </ul>

  <ul class="num" id="idNum">

    <li>1</li>    

    <li>2</li>

    <li>3</li>



  </ul>

</div>



<br />



<div class="container" id="idTransformView2">

  <ul class="slider slider2" id="idSlider2">

    <li><img src="images/01.jpg"/></li>

    <li><img src="images/02.jpg"/></li>

    <li><img src="images/03.jpg"/></li>

    <li><img src="images/01.jpg"/></li>

    <li><img src="images/02.jpg"/></li>

    <li><img src="images/03.jpg"/></li>

  </ul>

  <ul class="num" id="idNum2">

    <li>1</li>

    <li>2</li>

    <li>3</li>

     <li>4</li>    

    <li>5</li>

    <li>6</li>

  </ul>

</div>



<br />



<div>

<input id="idStop" type="button" value=" 停止自动 " />

<input id="idStart" type="button" value=" 开始自动 " />

<br /><br /><input id="idPre" type="button" value=" <- 上一个 " />

<input id="idNext" type="button" value=" 下一个 -> " />

<br /><br />

切换速度：

<input id="idFast" type="button" value=" + 加 速 " />

<input id="idSlow" type="button" value=" - 减 速 " />

<br /><br />

停顿时间：

<input id="idAdd" type="button" value=" + 加时间 " />

<input id="idReduce" type="button" value=" - 减时间 " />

<br /><br />

<input id="idReset" type="button" value=" Reset " />

</div>



<p>

  <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 = $("idNum").getElementsByTagName("li");

    

    var tv = new TransformView("idTransformView", "idSlider", 168, 6, {

        onStart : function(){ Each(objs, function(o, i){ o.className = tv.Index == i ? "on" : ""; }) }//按钮样式

    });

    

    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();

        }

    })

    

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

    

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

    

    var tv2 = new TransformView("idTransformView2", "idSlider2", 408, 6, {

        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();

        }

    })

    

    $("idStop").onclick = function(){ tv2.Auto = false; tv2.Stop(); }

    $("idStart").onclick = function(){ tv2.Auto = true; tv2.Start(); }

    $("idNext").onclick = function(){ tv2.Index++; tv2.Start(); }

    $("idPre").onclick = function(){ tv2.Index--;tv2.Start(); }

    $("idFast").onclick = function(){ if(--tv2.Step <= 0){tv2.Step = 1;} }

    $("idSlow").onclick = function(){ if(++tv2.Step >= 10){tv2.Step = 10;} }

    $("idReduce").onclick = function(){ tv2.Pause-=1000; if(tv2.Pause <= 0){tv2.Pause = 0;} }

    $("idAdd").onclick = function(){ tv2.Pause+=1000; if(tv2.Pause >= 5000){tv2.Pause = 5000;} }

    

    $("idReset").onclick = function(){

        tv2.Step = Math.abs(tv2.options.Step);

        tv2.Time = Math.abs(tv2.options.Time);

        tv2.Auto = !!tv2.options.Auto;

        tv2.Pause = Math.abs(tv2.options.Pause);

    }

    

}

</script>





  <br />

  代码整理：<a href="http://www.lanrentuku.com/" target="_blank">懒人图库</a>　 

来源：<a href="http://www.cnblogs.com/cloudgamer/archive/2008/07/06/SlideTrans.html" target="_blank">cloudgamer</a>

<p>＊尊重他人劳动成果，转载请自觉注明出处！ </p>

<p></p>

<p></p>

<p></p>

</body>

</html>