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图片切换特效(1):原生JS图片切换效果

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="http://www.mamicode.com/jscss/demoimg/201311/01.jpg"/></li>    <li><img src="http://www.mamicode.com/jscss/demoimg/201311/02.jpg"/></li>    <li><img src="http://www.mamicode.com/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>
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