<script>
 var i=1;
 var img = new Array();
 img[0] = "1.bmp";
 img[1] = "2.bmp";
 img[2] = "3.bmp";
 img[3] = "4.bmp";
 img[4] = "5.bmp";
 function playImg(){
 i=i+1;
 var imgs = document.getElementById("img");
 imgs.src =img[i];
 if(i>=4){
 i=1;
 }
 }
 window.onload = function(){
 document.getElementById("img").src="/UploadFiles/2021-04-02/1.bmp">



主要体现了一个图片的切换控制思路，可以用于各种场景，那么下面我们来看一个复杂一些的实现，能够控制滑动和停顿事件等具体的实现图片的滑动切换效果的例子：




var $$ = function (id) {
return "string" == typeof id "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 "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: 30,//滑动持续时间
 Time: 10,//滑动延时
 Pause: 3000,//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);
 }
};