<html>
<head>
<title>圖片播放</title>
</head>
<body>
<script type="text/javascript">
var $$ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};
var Extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}
var CurrentStyle = function(element){
return element.currentStyle || document.defaultView.getComputedStyle(element, null);
}
var Bind = function(object, fun) {
var args = Array.prototype.slice.call(arguments).slice(2);
return function() {
return fun.apply(object, args.concat(Array.prototype.slice.call(arguments)));
}
}
var forEach = function(array, callback, thisObject){
if(array.forEach){
array.forEach(callback, thisObject);
}else{
for (var i = 0, len = array.length; i < len; i++) { callback.call(thisObject, array[i], i, array); }
}
}
var Tween = {
Quart: {
easeOut: function(t,b,c,d){
return -c * ((t=t/d-1)*t*t*t - 1) + b;
}
},
Back: {
easeOut: function(t,b,c,d,s){
if (s == undefined) s = 1.70158;
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
}
},
Bounce: {
easeOut: function(t,b,c,d){
if ((t/=d) < (1/2.75)) {
return c*(7.5625*t*t) + b;
} else if (t < (2/2.75)) {
return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
} else if (t < (2.5/2.75)) {
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
} else {
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
}
}
}
//容器對象,滑動對象,切換數量
var SlideTrans = function(container, slider, count, options) {
this._slider = $$(slider);
this._container = $$(container);//容器對象
this._timer = null;//定時器
this._count = Math.abs(count);//切換數量
this._target = 0;//目標值
this._t = this._b = this._c = 0;//tween參數
this.Index = 0;//當前索引
this.SetOptions(options);
this.Auto = !!this.options.Auto;
this.Duration = Math.abs(this.options.Duration);
this.Time = Math.abs(this.options.Time);
this.Pause = Math.abs(this.options.Pause);
this.Tween = this.options.Tween;
this.onStart = this.options.onStart;
this.onFinish = this.options.onFinish;
var bVertical = !!this.options.Vertical;
this._css = bVertical ? "top" : "left";//方向
//樣式設置
var p = CurrentStyle(this._container).position;
p == "relative" || p == "absolute" || (this._container.style.position = "relative");
this._container.style.overflow = "hidden";
this._slider.style.position = "absolute";
this.Change = this.options.Change ? this.options.Change :
this._slider[bVertical ? "offsetHeight" : "offsetWidth"] / this._count;
};
SlideTrans.prototype = {
//設置默認屬性
SetOptions: function(options) {
this.options = {//默認值
Vertical: true,//是否垂直方向（方向不能改）
Auto: true,//是否自動
Change: 0,//改變量
Duration: 10,//滑動持續時間
Time: 30,//滑動延時
Pause: 3000,//停頓時間(Auto爲true時有效)
onStart: function(){},//開始轉換時執行
onFinish: function(){},//完成轉換時執行
Tween: Tween.Quart.easeOut//tween算子
};
Extend(this.options, options || {});
},
//開始切換
Run: function(index) {
//修正index
index == undefined && (index = this.Index);
index < 0 && (index = this._count - 1) || index >= this._count && (index = 0);
//設置參數
this._target = -Math.abs(this.Change) * (this.Index = index);
this._t = 0;
this._b = parseInt(CurrentStyle(this._slider)[this.options.Vertical ? "top" : "left"]);
this._c = this._target - this._b;
this.onStart();
this.Move();
},
//移動
Move: function() {
clearTimeout(this._timer);
//未到達目標繼續移動否則進行下一次滑動
if (this._c && this._t < this.Duration) {
this.MoveTo(Math.round(this.Tween(this._t++, this._b, this._c, this.Duration)));
this._timer = setTimeout(Bind(this, this.Move), this.Time);
}else{
this.MoveTo(this._target);
this.Auto && (this._timer = setTimeout(Bind(this, this.Next), this.Pause));
}
},
//移動到
MoveTo: function(i) {
this._slider.style[this._css] = i + "px";
},
//下一個
Next: function() {
this.Run(++this.Index);
},
//上一個
Previous: function() {
this.Run(--this.Index);
},
//停止
Stop: function() {
clearTimeout(this._timer); this.MoveTo(this._target);
}
};
</script>
<style type="text/css">
.container, .container img{width:280px; height:200px;}
.container img{border:0;display:block;}
</style>
<div class="container" id="idContainer">
<table id="idSlider" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><a ><img src="1.jpg"/ alt="" /></a></td>
<td><a ><img src="2.jpg"/ alt="" /></a></td>
<td><a ><img src="4.jpg"/ alt="" /></a></td>
<td><a ><img src="3.jpg"/ alt="" /></a></td>
</tr>
</table>
</div>
<script>
new SlideTrans("idContainer", "idSlider", 4, { Vertical: false }).Run();
</script>
<br />
<style type="text/css">
.container ul, .container li{list-style:none;margin:0;padding:0;*display:inline;}
.num{ position:absolute; right:5px; bottom:5px; font:12px/1.5 tahoma, arial; height:18px;}
.num li{
float: left;
color: #d94b01;
text-align: center;
line-height: 16px;
width: 16px;
height: 16px;
font-family: Arial;
font-size: 11px;
cursor: pointer;
margin-left: 3px;
border: 1px solid #f47500;
background-color: #fcf2cf;
}
.num li.on{
line-height: 18px;
width: 18px;
height: 18px;
font-size: 14px;
margin-top:-2px;
background-color: #ff9415;
font-weight: bold;
color:#FFF;
}
</style>
</body>
</html>