我有一个幻灯片，它使用的背景图像在一个有趣的循环中从一个淡入淡出到另一个。我有一个问题，当你开始幻灯片放映时，最后一个图像会在第一个图像加载之前出现片刻。 出现的图像偏离设置，使其左手边缘从窗口中间开始。在谷歌浏览器和Safari中，第一张图像显示该图像的位置，而其余图像则正确加载。
我已经尝试了几个幻灯片，如果我能删除这个bug，这是最成功的。任何人都可以帮助我吗？
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//Background Image Slideshow- (c) Dynamic Drive (www.dynamicdrive.com)
//For full source code, 100's more DHTML scripts, and TOS,
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<div style="height: 395px !important; margin: 0; padding: 0;">
<div id="bg">
<img alt="" src="/images/image1.jpg" /> <img alt="" src="/images/image2.jpg" /> <a href="link.html"><img alt="" src="/images/image3.jpg" /></a><img alt="" src="/images/image4.jpg" /><img alt="" src="/images/image5.jpg" /></div>
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<script type="text/javascript">
// Animate (11-January-2010)
// by Vic Phillips http://www.vicsjavascripts.org.uk
// To progressively change the Left, Top, Width, Height or Opacity of an element over a specified period of time.
// With the ability to scale the effect time on specified minimum/maximum values
// and with three types of progression 'sin' and 'cos' and liner.
// **** Application Notes
// **** The HTML Code
//
// when moving an element the inline or class rule style position of the element should be assigned as
// 'position:relative;' or 'position:absolute;'
//
// The element would normally be assigned a unique ID name.
//
// **** Initialising the Script.
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// The script is initialised by assigning an instance of the script to a variable.
// e.g A = new zxcAnimate('left','id1')
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// parameter 0 = the mode(see Note 1). (string)
// parameter 1 = the unique ID name or element object. (string or element object)
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// **** Executing the Effect
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// The effect is executed by an event call to function 'A.animate(10,800 ,5000,[10,800]);'
// where:
// A = the global referencing the script instance. (variable)
// parameter 0 = the start value. (digits, for opacity minimum 0, maximum 100)
// parameter 1 = the finish value. (digits, for opacity minimum 0, maximum 100)
// parameter 2 = period of time between the start and finish of the effect in milliseconds. (digits or defaults to previous or 0(on first call) milliSeconds)
// parameter 3 = (optional) to scale the effect time on a specified minimum/maximum. (array, see Note 3)
// field 0 the minimum value. (digits)
// field 1 the maximum value. (digits)
// parameter 3 = (optional) the type of progression, 'sin', 'cos' or 'liner'. (string, default = 'liner')
// 'sin' progression starts fast and ends slow.
// 'cos' progression starts slow and ends fast.
//
// Note 1: Examples modes: 'left', 'top', 'width', 'height', 'opacity.
// Note 2: The default units(excepting opacity) are 'px'.
// For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
// Note 3: The scale is of particular use when re-calling the effect
// in mid progression to retain an constant rate of progression.
// Note 4: The current effect value is recorded in A.data[0].
// Note 5: A function may be called on completion of the effect by assigning the function
// to the animator intance property .Complete.
// e.g. [instance].Complete=function(){ alert(this.data[0]); };
//
// **** Functional Code(1.58K) - NO NEED to Change
function zxcAnimate(mde,obj,srt){
this.to=null;
this.obj=typeof(obj)=='object'?obj:document.getElementById(obj);
this.mde=mde.replace(/\W/g,'');
this.data=[srt||0];
return this;
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zxcAnimate.prototype.animate=function(srt,fin,ms,scale,c){
clearTimeout(this.to);
this.time=ms||this.time||0;
this.neg=srt<0||fin<0;
this.data=[srt,srt,fin];
this.mS=this.time*(!scale?1:Math.abs((fin-srt)/(scale[1]-scale[0])));
this.c=typeof(c)=='string'?c.charAt(0).toLowerCase():this.c?this.c:'';
this.inc=Math.PI/(2*this.mS);
this.srttime=new Date().getTime();
this.cng();
}
zxcAnimate.prototype.cng=function(){
var oop=this,ms=new Date().getTime()-this.srttime;
this.data[0]=(this.c=='s')? (this.data[2]-this.data[1])*Math.sin(this.inc*ms)+this.data[1]:(this.c=='c')?this.data[2]-(this.data[2]-this.data[1])*Math.cos(this.inc*ms):(this.data[2]-this.data[1])/this.mS*ms+this.data[1];
this.apply();
if (ms<this.mS) this.to=setTimeout(function(){oop.cng()},10);
else {
this.data[0]=this.data[2];
this.apply();
if (this.Complete) this.Complete(this);
}
}
zxcAnimate.prototype.apply=function(){
if (isFinite(this.data[0])){
if (this.data[0]<0&&!this.neg) this.data[0]=0;
if (this.mde!='opacity') this.obj.style[this.mde]=Math.floor(this.data[0])+'px';
else zxcOpacity(this.obj,this.data[0]);
}
}
function zxcOpacity(obj,opc){
if (opc<0||opc>100) return;
obj.style.filter='alpha(opacity='+opc+')';
obj.style.opacity=obj.style.MozOpacity=obj.style.KhtmlOpacity=opc/100-.001;
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</script><script type="text/javascript">
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function BGFade(o){
var p=document.getElementById(o.ID)
if (p){
var bgs=p.getElementsByTagName('IMG');
this.bgs=[];
for (var z0=0;z0<bgs.length;z0++){
this.bgs[z0]=new zxcAnimate('opacity',bgs[z0]);
}
this.nu=z0-1;
this.ms=o.Duration||1000;
this.hold=o.Hold||this.ms*2;
if(this.nu>0){
this.Rotate();
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BGFade.prototype.Rotate=function(){
this.bgs[this.nu].obj.style.zIndex='0';
this.bgs[this.nu].animate(100,0,this.ms);
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this.bgs[this.nu].obj.style.zIndex='1';
this.bgs[this.nu].obj.style.left=-(this.bgs[this.nu].obj.width-zxcWWHS()[0])/2+'px'; // horizontal center
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this.bgs[this.nu].animate(0,100,this.ms);
var oop=this;
this.to=setTimeout(function(){ oop.Rotate(); },this.hold);
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function zxcWWHS(){
if (window.innerHeight) return [window.innerWidth-10,window.innerHeight-10,window.pageXOffset,window.pageYOffset];
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return [document.body.clientWidth,document.body.clientHeight,document.body.scrollLeft,document.body.scrollTop];
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new BGFade({
ID:'bg', // the unique id name of the container div. (string)
Duration:3000, // the duration of the fade effect in milli seconds. (digits)
Hold:5000 // the duration of the change between images in milli seconds. (digits)
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//-->
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任何帮助都会受到极大的关注，因为我真的不知道该怎么做。
答案 0 :(得分：2)
从您的评论JSFiddle1可以看出，除了最后一张图片在初始阶段显示外，一切正常。我不确定这是否正确，但我希望这能解决你的问题。
this.bgs[this.nu].animate(1, 0, this.ms);
我将动画时间从100减少到1。
快速修复：忘记我们所做的一切。正如您在评论中提到的那样，最后让我们看到隐身图片，如下所示：
<div id="bg">
<a href=""><img alt="Pyramifern" src="http://www.maoptp.co.uk/pyramifern.jpg" /></a>
<a href=""><img alt="Pyramifern at sunrise" src="http://www.maoptp.co.uk/pyramifern_at_sunrise.jpg" /></a>
<a href=""><img alt="Pyramifern at sunset" src="http://www.maoptp.co.uk/pyramifern_at_sunset.jpg" /></a>
<a href=""><img alt="Pyramifern at night" src="http://www.maoptp.co.uk/pyramifern_at_night.jpg" /></a>
<a href=""><img alt="Nocturnal flowers" src="http://www.maoptp.co.uk/nocturnal_flowers.jpg" /></a>
<a href=""> <img alt="Nocturnal flowers" style="display: none;" src="http://www.maoptp.co.uk/nocturnal_flowers.jpg" /></a>
</div>
希望你明白。