HTML实现滚动图片

浏览数：46 / 时间：2015年06月09日

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)));
}
}

//容器对象,滑动对象,切换数量
var SlideTrans = function(container, slider, count, options) {
this._slider = $(slider);
this._container = $(container);//容器对象
this._timer = null;//定时器
this._count = Math.abs(count);//切换数量
this._target = 0;//目标值
this._t = this._b = this._c = 0;//tween参数

this.Index = 0;//当前索引

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

//样式设置
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 = {
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
  Vertical: true,//是否垂直方向（方向不能改）
  Auto:  true,//是否自动
  Change:  0,//改变量
  Duration: 50,//滑动持续时间
  Time:  10,//滑动延时
  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
  Tween:  Tween.Quart.easeOut//tween算子
};
Extend(this.options, options || {});
},
//开始切换
Run: function(index) {
//修正index
index == undefined && (index = this.Index);
index < 0 && (index = this._count - 1) || index >= this._count && (index = 0);
//设置参数
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();
},
//移动
Move: function() {
clearTimeout(this._timer);
//未到达目标继续移动否则进行下一次滑动
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));
}
},
//移动到
MoveTo: function(i) {
this._slider.style[this._css] = i + "px";
},
//下一个
Next: function() {
this.Run(++this.Index);
},
//上一个
Previous: function() {
this.Run(--this.Index);
},
//停止
Stop: function() {
clearTimeout(this._timer); this.MoveTo(this._target);
}
};
</script>

var st = new SlideTrans("idContainer2", "idSlider2", 3, { Vertical: false });

var nums = [];
//插入数字
for(var i = 0, n = st._count - 1; i <= n;){
(nums[i] = $("idNum").appendChild(document.createElement_x("li"))).innerHTML = ++i;
}

forEach(nums, function(o, i){
o.onmouseover = function(){ o.className = "on"; st.Auto = false; st.Run(i); }
o.onmouseout = function(){ o.className = ""; st.Auto = true; st.Run(); }
})

//设置按钮样式
st.onStart = function(){
forEach(nums, function(o, i){ o.className = st.Index == i ? "on" : ""; })
}

$("idAuto").onclick = function(){
if(st.Auto){
st.Auto = false; st.Stop(); this.value = "自动";
}else{
st.Auto = true; st.Run(); this.value = "停止";
}
}
$("idNext").onclick = function(){ st.Next(); }
$("idPre").onclick = function(){ st.Previous(); }

$("idTween").onchange = function(){
switch (parseInt(this.value)){
  case 2 :
   st.Tween = Tween.Bounce.easeOut; break;
  case 1 :
   st.Tween = Tween.Back.easeOut; break;
  default :
   st.Tween = Tween.Quart.easeOut;
}
}

st.Run();
</script>

HTML实现滚动图片,古老的榕树,5-wow.com

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HTML实现滚动图片