页面图片自动与手动切换.docx

//先引用这个JS文件
var $$ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};

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 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 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);
}
};

//制定样式(制作CSS文件，放进去)
BODY {
CLEAR: both; PADDING-RIGHT: 0px; MARGIN-TOP: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN-LEFT: 0px; MARGIN-RIGHT: 0px; PADDING-TOP: 0px; BACKGROUND-REPEAT: repeat-x; FONT-FAMILY: Arial, Helvetica, sans-serif; BACKGROUND-COLOR: #f8fbff; TEXT-ALIGN: center
}
.container {
WIDTH: 960px; HEIGHT: 245px
}
.container IMG {
WIDTH: 960px; HEIGHT: 245px
}
.container IMG {
BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px
}
.num {
RIGHT: 3px; BOTTOM: 3px; POSITION: absolute
}
.num LI {
BORDER-RIGHT: #707070 1px solid; BORDER-TOP: #707070 1px solid; FONT-SIZE: 12px; FLOAT: left; MARGIN: 1px; BORDER-LEFT: #707070 1px solid; WIDTH: 16px; CURSOR: pointer; COLOR: #fff; LINE-HEIGHT: 16px; BORDER-BOTTOM: #707070 1px solid; FONT-FAMILY: Arial; LIST-STYLE-TYPE: none; HEIGHT: 16px; BACKGROUND-COLOR: #060a0b; TEXT-ALIGN: center
}
.num LI.on {
BORDER-TOP-WIDTH: 0px; FONT-WEIGHT: bold; BORDER-LEFT-WIDTH: 0px; FONT-SIZE: 14px; BORDER-BOTTOM-WIDTH: 0px; WIDTH: 18px; LINE-HEIGHT: 18px; HEIGHT: 18px; BACKGROUND-COLOR: #ce0609; BORDER-RIGHT-WIDTH: 0px
}

//html内容

<p style='height:0px;padding:0;overflow:hidden'>19、"text/javascript" src="jquery-1.3.2.min.js">

var counts = document.getElementById("idSlider25").getElementsByTagName("td").length;
var st =</p><p style='height:0px;padding:0;overflow:hidden'>20、 new SlideTrans("idContainer25", "idSlider25", counts, { Vertical: false,Pause:10000 });
var nums = [];

for(var i = 0, n = st._count - 1; i <= n;){
(nums[i] = $$("idNum").appendChild(document.createElement("li"))).inner</p><p style='height:0px;padding:0;overflow:hidden'>21、HTML = ++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(); }
})

</p><p style='height:0px;padding:0;overflow:hidden'>22、
st.onStart = function(){
forEach(nums, function(o, i){ o.className = st.Index == i ? "on" : ""; })
}