js实现图片滑动切换幻灯

2017-05-12 网页编程网 网页编程网

<HTML>
<HEAD>
<TITLE>JS图片滑动切换幻灯效果</TITLE>
<style>
BODY {
PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px
}
UL {
PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px
}
.container {
WIDTH: 400px; HEIGHT: 300px
}
.container A IMG {
WIDTH: 400px; HEIGHT: 300px
}
.container IMG {
BORDER-BOTTOM-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-TOP-STYLE: none; BORDER-LEFT-STYLE: none
}
.td_f A IMG {
PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px
}
.csrcode {
POSITION: absolute; WIDTH: 90px; FLOAT: right; TOP: 280px; LEFT: 310px
}
.csrcode LI {
TEXT-ALIGN: center; LINE-HEIGHT: 15px; LIST-STYLE-TYPE: none; MARGIN: 1px; WIDTH: 15px; FONT-FAMILY: Arial; BACKGROUND: url(flashbutton.gif) no-repeat -15px 0px; FLOAT: left; HEIGHT: 15px; COLOR: #86a2b8; FONT-SIZE: 12px; CURSOR: pointer
}
.csrcode LI.on {
LINE-HEIGHT: 15px; WIDTH: 15px; BACKGROUND: url(lashbutton.gif) no-repeat; HEIGHT: 15px; COLOR: #ffffff
}
.more {
FLOAT: right
}
.more1 A {
TEXT-ALIGN: left; LINE-HEIGHT: 25px; MARGIN: 0px 0px 0px 10px; COLOR: #3373a3
}
</style>
<SCRIPT language=javascript>
if(typeof(pgvMain) == 'function')
pgvMain();
</SCRIPT>
<SCRIPT>
var gtopTab="one";
function $id(id){
return document.getElementById(id);
}
function changesTab(tab_id){
if (tab_id==gtopTab){
return;
}else{
$id(gtopTab).className="unselect";
$id(tab_id).className="select";
$id("tab_"+gtopTab).style.display="none";
$id("tab_"+tab_id).style.display="block";
gtopTab=tab_id;
}
}
</SCRIPT>
<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 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:  4000,//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>
</head>
<BODY>
<DIV id=idContainer2 class=container>
<TABLE id=idSlider2 border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD class="td_f"><A href="http://#"><IMG src="/images/m01.jpg"></A></TD>
<TD class="td_f"><A href="http://#"><IMG src="/images/m02.jpg"></A></TD>
<TD class="td_f"><A href="http://#"><IMG src="/images/m03.jpg"></A></TD>
<TD class="td_f"><A href="http://#"><IMG src="/images/m04.jpg"></A></TD>
<TD class="td_f"><A href="http://#"><IMG  src="/images/m05.jpg"></A></TD>
</TR>
</TBODY>
</TABLE>
<UL id="www_csrcode_cn" class="csrcode"></UL>
</DIV>
<SCRIPT>
//new SlideTrans("idContainer", "idSlider", 3).Run();
///////////////////////////////////////////////////////////
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 st = new SlideTrans("idContainer2", "idSlider2", 5, { Vertical: false });
var nums = [];
//插入数字
for(var i = 0, n = st._count - 1; i <= n;){
(nums[i] = $("www_csrcode_cn").appendChild(document.createElement("li"))).innerHTML = ++i;
}
forEach(nums, function(o, i){
o.onmouseover = function(){ o.className = "on"; st.Auto = false; st.Run(i); }
o.onmouseout = function(){ o.className = ""; st.Auto = true; st.Run(); }
})
//设置按钮样式
st.onStart = function(){
forEach(nums, function(o, i){ o.className = st.Index == i ? "on" : ""; })
}
//$("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>
</BODY>
</HTML>

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