js图片自动轮换代码示例
发布时间：2015-07-30 编辑：jiaochengji.com
分享一个图片自动轮换效果的实例代码，用js脚本实现图片轮换效果，感兴趣的朋友参考下。
例子，纯js实现的图片轮换效果。
复制代码 代码示例:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js图片自动轮换代码--www.jiaochengji.com</title>
<style type="text/css">
body{background:#eee;padding:20px;}
/*=========mF_classicHC --经典怀旧系列一--========*/
.mF_classicHC .pic{border:1px solid #666;overflow:hidden;}
.mF_classicHC .pic li{position:absolute;left:1px;top:1px;}
.mF_classicHC .txt li{position:absolute;left:0;background:#dedede;overflow:hidden;}
.mF_classicHC .txt li a{display:block;color:#333;text-align:center;font-size:12px;font-weight:bold;text-decoration:none;}/*文字样式*/
.mF_classicHC .num,.mF_classicHC .num-bg{height:19px;position:absolute;z-index:3;right:0;bottom:31px;color:#fff;}/*按钮样式*/
.mF_classicHC .num-bg{width:100%;background:url(http://www.jiaochengji.com/UploadFiles/2010/11/201011190950291451.png) right bottom no-repeat;_height:16px;_background:0;_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://www.jiaochengji.com/UploadFiles/2010/11/201011190959286652.png', sizingMethod='scale');}
.mF_classicHC .num-bg li{position:absolute;}
.mF_classicHC .num li{float:left;width:26px;height:16px;line-height:16px;padding-top:3px;text-align:center;cursor:pointer;position:relative;}
.mF_classicHC .num li span{position:absolute;top:3px;left:0;width:1px;height:16px;overflow:hidden;background:#DADADA;}
.mF_classicHC .num li.current,.mF_classicHC .num li.hover{background:url(http://www.jiaochengji.com/UploadFiles/2010/11/201011190950295510.gif}/*当前/悬停按钮样式*/
.mF_classicHC .num li.hover{background-position:right bottom;}
</style>
<script type="text/javascript">
/*
* myFocus焦点图基本库代码开始
*/
var myFocus={
//myFocus JavaScript Library v1.0.0 beta
//Design By Koen @ 2010.9.16
$:function(id){return document.getElementById(id);},
$$:function(tag,obj){return (typeof obj=='object'?obj:this.$(obj)).getElementsByTagName(tag);},
$li:function(obj,n){return this.$$('li',this.$$('ul',obj)[n])},
linear:function(t,b,c,d){return c*t/d + b;},
easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t + b;},
easeOut:function(t,b,c,d){return -c*((t=t/d-1)*t*t*t - 1) + b;},
easeInOut:function(t,b,c,d){return ((t/=d/2) < 1)?(c/2*t*t*t*t + b):(-c/2*((t-=2)*t*t*t - 2) + b);},
style:function(obj,style){return (+[1,])?window.getComputedStyle(obj,null)[style]:obj.currentStyle[style];},//getStyle简化版
opa:function(obj,v){//取得或设置对象透明度,默认100
if(v!=undefined) {v=v>100?100:(v<0?0:v); obj.style.filter = "alpha(opacity=" + v + ")"; obj.style.opacity = (v / 100);}
else return (!+[1,])?((obj.filters.alpha)?obj.filters.alpha.opacity:100):((obj.style.opacity)?obj.style.opacity*100:100);
},
animate:function(obj,prop,val,spd,type,fn){
var opa=prop=='opacity'?true:false;
if(opa&&obj.style.display=='none'){obj.style.display='';this.opa(obj,0);}
var t=0,b=opa?this.opa(obj):parseInt(this.style(obj,prop)),c=val-b,d=spd||50,st=type||'easeOut',m=c>0?'ceil':'floor';
if(obj[prop+'Timer']) clearInterval(obj[prop+'Timer']);
obj[prop+'Timer']=setInterval(function(){
if(opa&&t<d){myFocus.opa(obj,Math[m](myFocus[st](++t,b,c,d)));}
else if(!opa&&t<d){obj.style[prop]=Math[m](myFocus[st](++t,b,c,d))+'px';}
else {if(opa&&val==0){obj.style.display='none'}clearInterval(obj[prop+'Timer']);fn&&fn.call(obj);}
},10);return this;
},
fadeIn:function(obj,speed,fn){this.animate(obj,'opacity',100,speed==undefined?20:speed,'linear',fn);return this;},
fadeOut:function(obj,speed,fn){this.animate(obj,'opacity',0,speed==undefined?20:speed,'linear',fn);return this;},
slide:function(obj,params,speed,easing,fn){for(var p in params) this.animate(obj,p,params[p],speed,easing,fn);return this;},
stop:function(obj){//停止所有运动函数
var animate=['left','right','top','bottom','width','height','opacity'];
for(var i=0;i<animate.length;i++) if(obj[animate[i]+'Timer']) clearInterval(obj[animate[i]+'Timer']);
return this;
},
initCSS:function(p){
var css=[],oStyle = document.createElement('style');oStyle.type='text/css';
if(p.width){css.push('.'+p.style+' *{margin:0;padding:0;border:0;list-style:none;}.'+p.style+'{position:relative;width:'+p.width+'px;height:'+p.height+'px;overflow:hidden;font:12px/1.5 Verdana,Geneva,sans-serif;background:#fff;}.'+p.style+' .loading{position:absolute;z-index:9999;width:100%;height:100%;color:#666;text-align:center;padding-top:'+0.3*p.height+'px;background:#fff url(/i_41956/28236-loading.gif) center '+0.4*p.height+'px no-repeat;}.'+p.style+' .pic,.'+p.style+' .pic *{width:'+p.width+'px;height:'+p.height+'px;}.'+p.style+' .txt li,.'+p.style+' .txt li span,.'+p.style+' .txt-bg{width:'+p.width+'px;height:'+p.txtHeight+'px;line-height:'+p.txtHeight+'px;overflow:hidden;}')}
if(oStyle.styleSheet){oStyle.styleSheet.cssText=css.join('');} else {oStyle.innerHTML=css.join('');}
var oHead = this.$$('head',document)[0];oHead.insertBefore(oStyle,oHead.firstChild);
},
setting:function(par){
if(window.attachEvent){(function(){try{myFocus.$(par.id).className=par.style;myFocus.initCSS(par);}catch(e){setTimeout(arguments.callee,0);}})();window.attachEvent('onload',function(){myFocus[par.style](par)});}
else{document.addEventListener("DOMContentLoaded",function(){myFocus.$(par.id).className=par.style;myFocus.initCSS(par);},false);window.addEventListener('load',function(){myFocus[par.style](par)},false);}
},
addList:function(obj,cla){//生成HMTL,cla为生成列表的class,其中封装有:cla='txt'(生成alt文字),cla='num'(生成按钮数字),cla='thumb'(生成小图)
var s=[],n=this.$li(obj,0).length,num=cla.length;
for(var j=0;j<num;j++){
s.push('<ul class='+cla[j]+'>');
for(var i=0;i<n;i++){s.push('<li>'+(cla[j]=='num'?('<a>'+(i+1)+'</a>'):(cla[j]=='txt'?this.$li(obj,0)[i].innerHTML.replace(/\>(.|\n|\r)*?(\<\/a\>)/i,'>'+(this.$$('img',obj)[i]?this.$$('img',obj)[i].alt:'')+'</a>'):(cla[j]=='thumb'?'<img src='+(this.$$('img',obj)[i].getAttribute("thumb")||this.$$('img',obj)[i].src)+' />':'')))+'<span></span></li>')};
s.push('</ul>');
}; obj.innerHTML+=s.join('');
},
switchMF:function(fn1,fn2,auto){
return "box.removeChild(this.$$('div',box)[0]);var run=function(idx){("+fn1+")();if (index == n - 1) index = -1;var next = idx != undefined ? idx: index + 1;("+fn2+")();index=next;};run(index);if("+auto+"!==false) var auto=setInterval(function(){run()},t);box.onmouseover=function(){if(auto) clearInterval(auto);};box.onmouseout=function(){if(auto) auto=setInterval(function(){run()},t);}"
},
bind:function(arrStr,type,delay){
return "for (var j=0;j<n;j++){"+arrStr+"[j].index=j;if("+type+"=='click'){"+arrStr+"[j].onmouseover=function(){if(this.className!='current') this.className='hover'};"+arrStr+"[j].onmouseout=function(){if(this.className=='hover') this.className=''};"+arrStr+"[j].onclick=function(){if(this.index!=index) run(this.index)};}else if("+type+"=='mouseover'){"+arrStr+"[j].onmouseover=function(){var self=this;if("+delay+"==0){if(!self.className) run(self.index)}else "+arrStr+".d=setTimeout(function(){if(!self.className) run(self.index)},"+(delay==undefined?100:delay)+")};"+arrStr+"[j].onmouseout=function(){clearTimeout("+arrStr+".d)};}else{alert('myFocus 不支持这样的事件 \"'+"+type+"+'\"');break;}}"
},
extend:function(fnObj){for(var p in fnObj) this[p]=fnObj[p];}
}
/*
* myFocus焦点图基本库代码结束
* 下面是各款基于myFocus库制作的焦点图风格皮肤，可自行按需选择
* myFocus焦点图库及皮肤可自由使用，保留作者相关信息即可，谢谢支持！^^
*/
myFocus.extend({
mF_classicHC:function(par){//*************经典怀旧系列一--慧聪风格*********
var box=this.$(par.id);//定义焦点图盒子
this.addList(box,['txt','num-bg','num']);//添加ul列表
var pic=this.$li(box,0),txt=this.$li(box,1),num=this.$li(box,3);//定义焦点图元素
var index=0,n=pic.length,t=par.time*1000;//运行时相关参数
//CSS
var txtH=par.txtHeight;
box.style.width=par.width+2+'px';box.style.height=par.height+txtH+2+'px';
this.$$('ul',box)[2].style.bottom=this.$$('ul',box)[3].style.bottom=txtH+1+'px';
for(var i=0;i<n;i++){
pic[i].style.display='none';txt[i].style.display='none';
txt[i].style.top=par.height+2+'px';txt[i].style.width=par.width+2+'px';
}
//PLAY
eval(this.switchMF(function(){
pic[index].style.display='none';
txt[index].style.display='none';
num[index].className='';
},function(){
myFocus.fadeIn(pic[next]);
txt[next].style.display='';
num[next].className='current';
}))
eval(this.bind('num','par.trigger',par.delay));
}
})
//下面为焦点图的调用，可在网页任意位置调用
myFocus.setting({
style:'mF_classicHC',//风格样式
id:'myFocus',//焦点图ID
trigger:'click',//按钮切换模式：'click'(点击触发)/'mouseover'(悬停触发,默认有0.1秒延迟，可以自行添加参数'delay:毫秒'设置)
time:4,//切换图片的时间间隔，单位秒
txtHeight:26,//文字层高，26为推荐，0为隐藏
width:380,//宽(大图)，注意:整个焦点图的宽等于或大于图片宽
height:246//高(大图)，注意同上
});
</script>
</head>
<body>
<div id="myFocus">
<div class="loading"><span>请稍候...</span></div><!--载入画面-->
<ul class="pic"><!--内容列表-->
<li><a href="#"><img src="/UploadFiles/2010/11/201011190950294720.jpg" thumb="" alt="图片1来源于网络，版权属于作者" text="" /></a></li>
<li><a href="#"><img src="/UploadFiles/2010/11/201011190950303947.jpg" thumb="" alt="版权属于作者，图片2来源于网络" text="" /></a></li>
<li><a href="#"><img src="/UploadFiles/2010/11/201011190950305701.jpg" thumb="" alt="图片3来源于网络，版权属于作者" text="" /></a></li>
<li><a href="#"><img src="/UploadFiles/2010/11/201011190950337037.jpg" thumb="" alt="版权属于作者，图片4来源于网络" text="" /></a></li>
</ul>
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js图片自动轮换代码--www.jiaochengji.com</title>
<style type="text/css">
body{background:#eee;padding:20px;}
/*=========mF_classicHC --经典怀旧系列一--========*/
.mF_classicHC .pic{border:1px solid #666;overflow:hidden;}
.mF_classicHC .pic li{position:absolute;left:1px;top:1px;}
.mF_classicHC .txt li{position:absolute;left:0;background:#dedede;overflow:hidden;}
.mF_classicHC .txt li a{display:block;color:#333;text-align:center;font-size:12px;font-weight:bold;text-decoration:none;}/*文字样式*/
.mF_classicHC .num,.mF_classicHC .num-bg{height:19px;position:absolute;z-index:3;right:0;bottom:31px;color:#fff;}/*按钮样式*/
.mF_classicHC .num-bg{width:100%;background:url(http://www.jiaochengji.com/UploadFiles/2010/11/201011190950291451.png) right bottom no-repeat;_height:16px;_background:0;_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://www.jiaochengji.com/UploadFiles/2010/11/201011190959286652.png', sizingMethod='scale');}
.mF_classicHC .num-bg li{position:absolute;}
.mF_classicHC .num li{float:left;width:26px;height:16px;line-height:16px;padding-top:3px;text-align:center;cursor:pointer;position:relative;}
.mF_classicHC .num li span{position:absolute;top:3px;left:0;width:1px;height:16px;overflow:hidden;background:#DADADA;}
.mF_classicHC .num li.current,.mF_classicHC .num li.hover{background:url(http://www.jiaochengji.com/UploadFiles/2010/11/201011190950295510.gif}/*当前/悬停按钮样式*/
.mF_classicHC .num li.hover{background-position:right bottom;}
</style>
<script type="text/javascript">
/*
* myFocus焦点图基本库代码开始
*/
var myFocus={
//myFocus JavaScript Library v1.0.0 beta
//Design By Koen @ 2010.9.16
$:function(id){return document.getElementById(id);},
$$:function(tag,obj){return (typeof obj=='object'?obj:this.$(obj)).getElementsByTagName(tag);},
$li:function(obj,n){return this.$$('li',this.$$('ul',obj)[n])},
linear:function(t,b,c,d){return c*t/d + b;},
easeIn:function(t,b,c,d){return c*(t/=d)*t*t*t + b;},
easeOut:function(t,b,c,d){return -c*((t=t/d-1)*t*t*t - 1) + b;},
easeInOut:function(t,b,c,d){return ((t/=d/2) < 1)?(c/2*t*t*t*t + b):(-c/2*((t-=2)*t*t*t - 2) + b);},
style:function(obj,style){return (+[1,])?window.getComputedStyle(obj,null)[style]:obj.currentStyle[style];},//getStyle简化版
opa:function(obj,v){//取得或设置对象透明度,默认100
if(v!=undefined) {v=v>100?100:(v<0?0:v); obj.style.filter = "alpha(opacity=" + v + ")"; obj.style.opacity = (v / 100);}
else return (!+[1,])?((obj.filters.alpha)?obj.filters.alpha.opacity:100):((obj.style.opacity)?obj.style.opacity*100:100);
},
animate:function(obj,prop,val,spd,type,fn){
var opa=prop=='opacity'?true:false;
if(opa&&obj.style.display=='none'){obj.style.display='';this.opa(obj,0);}
var t=0,b=opa?this.opa(obj):parseInt(this.style(obj,prop)),c=val-b,d=spd||50,st=type||'easeOut',m=c>0?'ceil':'floor';
if(obj[prop+'Timer']) clearInterval(obj[prop+'Timer']);
obj[prop+'Timer']=setInterval(function(){
if(opa&&t<d){myFocus.opa(obj,Math[m](myFocus[st](++t,b,c,d)));}
else if(!opa&&t<d){obj.style[prop]=Math[m](myFocus[st](++t,b,c,d))+'px';}
else {if(opa&&val==0){obj.style.display='none'}clearInterval(obj[prop+'Timer']);fn&&fn.call(obj);}
},10);return this;
},
fadeIn:function(obj,speed,fn){this.animate(obj,'opacity',100,speed==undefined?20:speed,'linear',fn);return this;},
fadeOut:function(obj,speed,fn){this.animate(obj,'opacity',0,speed==undefined?20:speed,'linear',fn);return this;},
slide:function(obj,params,speed,easing,fn){for(var p in params) this.animate(obj,p,params[p],speed,easing,fn);return this;},
stop:function(obj){//停止所有运动函数
var animate=['left','right','top','bottom','width','height','opacity'];
for(var i=0;i<animate.length;i++) if(obj[animate[i]+'Timer']) clearInterval(obj[animate[i]+'Timer']);
return this;
},
initCSS:function(p){
var css=[],oStyle = document.createElement('style');oStyle.type='text/css';
if(p.width){css.push('.'+p.style+' *{margin:0;padding:0;border:0;list-style:none;}.'+p.style+'{position:relative;width:'+p.width+'px;height:'+p.height+'px;overflow:hidden;font:12px/1.5 Verdana,Geneva,sans-serif;background:#fff;}.'+p.style+' .loading{position:absolute;z-index:9999;width:100%;height:100%;color:#666;text-align:center;padding-top:'+0.3*p.height+'px;background:#fff url(/i_41956/28236-loading.gif) center '+0.4*p.height+'px no-repeat;}.'+p.style+' .pic,.'+p.style+' .pic *{width:'+p.width+'px;height:'+p.height+'px;}.'+p.style+' .txt li,.'+p.style+' .txt li span,.'+p.style+' .txt-bg{width:'+p.width+'px;height:'+p.txtHeight+'px;line-height:'+p.txtHeight+'px;overflow:hidden;}')}
if(oStyle.styleSheet){oStyle.styleSheet.cssText=css.join('');} else {oStyle.innerHTML=css.join('');}
var oHead = this.$$('head',document)[0];oHead.insertBefore(oStyle,oHead.firstChild);
},
setting:function(par){
if(window.attachEvent){(function(){try{myFocus.$(par.id).className=par.style;myFocus.initCSS(par);}catch(e){setTimeout(arguments.callee,0);}})();window.attachEvent('onload',function(){myFocus[par.style](par)});}
else{document.addEventListener("DOMContentLoaded",function(){myFocus.$(par.id).className=par.style;myFocus.initCSS(par);},false);window.addEventListener('load',function(){myFocus[par.style](par)},false);}
},
addList:function(obj,cla){//生成HMTL,cla为生成列表的class,其中封装有:cla='txt'(生成alt文字),cla='num'(生成按钮数字),cla='thumb'(生成小图)
var s=[],n=this.$li(obj,0).length,num=cla.length;
for(var j=0;j<num;j++){
s.push('<ul class='+cla[j]+'>');
for(var i=0;i<n;i++){s.push('<li>'+(cla[j]=='num'?('<a>'+(i+1)+'</a>'):(cla[j]=='txt'?this.$li(obj,0)[i].innerHTML.replace(/\>(.|\n|\r)*?(\<\/a\>)/i,'>'+(this.$$('img',obj)[i]?this.$$('img',obj)[i].alt:'')+'</a>'):(cla[j]=='thumb'?'<img src='+(this.$$('img',obj)[i].getAttribute("thumb")||this.$$('img',obj)[i].src)+' />':'')))+'<span></span></li>')};
s.push('</ul>');
}; obj.innerHTML+=s.join('');
},
switchMF:function(fn1,fn2,auto){
return "box.removeChild(this.$$('div',box)[0]);var run=function(idx){("+fn1+")();if (index == n - 1) index = -1;var next = idx != undefined ? idx: index + 1;("+fn2+")();index=next;};run(index);if("+auto+"!==false) var auto=setInterval(function(){run()},t);box.onmouseover=function(){if(auto) clearInterval(auto);};box.onmouseout=function(){if(auto) auto=setInterval(function(){run()},t);}"
},
bind:function(arrStr,type,delay){
return "for (var j=0;j<n;j++){"+arrStr+"[j].index=j;if("+type+"=='click'){"+arrStr+"[j].onmouseover=function(){if(this.className!='current') this.className='hover'};"+arrStr+"[j].onmouseout=function(){if(this.className=='hover') this.className=''};"+arrStr+"[j].onclick=function(){if(this.index!=index) run(this.index)};}else if("+type+"=='mouseover'){"+arrStr+"[j].onmouseover=function(){var self=this;if("+delay+"==0){if(!self.className) run(self.index)}else "+arrStr+".d=setTimeout(function(){if(!self.className) run(self.index)},"+(delay==undefined?100:delay)+")};"+arrStr+"[j].onmouseout=function(){clearTimeout("+arrStr+".d)};}else{alert('myFocus 不支持这样的事件 \"'+"+type+"+'\"');break;}}"
},
extend:function(fnObj){for(var p in fnObj) this[p]=fnObj[p];}
}
/*
* myFocus焦点图基本库代码结束
* 下面是各款基于myFocus库制作的焦点图风格皮肤，可自行按需选择
* myFocus焦点图库及皮肤可自由使用，保留作者相关信息即可，谢谢支持！^^
*/
myFocus.extend({
mF_classicHC:function(par){//*************经典怀旧系列一--慧聪风格*********
var box=this.$(par.id);//定义焦点图盒子
this.addList(box,['txt','num-bg','num']);//添加ul列表
var pic=this.$li(box,0),txt=this.$li(box,1),num=this.$li(box,3);//定义焦点图元素
var index=0,n=pic.length,t=par.time*1000;//运行时相关参数
//CSS
var txtH=par.txtHeight;
box.style.width=par.width+2+'px';box.style.height=par.height+txtH+2+'px';
this.$$('ul',box)[2].style.bottom=this.$$('ul',box)[3].style.bottom=txtH+1+'px';
for(var i=0;i<n;i++){
pic[i].style.display='none';txt[i].style.display='none';
txt[i].style.top=par.height+2+'px';txt[i].style.width=par.width+2+'px';
}
//PLAY
eval(this.switchMF(function(){
pic[index].style.display='none';
txt[index].style.display='none';
num[index].className='';
},function(){
myFocus.fadeIn(pic[next]);
txt[next].style.display='';
num[next].className='current';
}))
eval(this.bind('num','par.trigger',par.delay));
}
})
//下面为焦点图的调用，可在网页任意位置调用
myFocus.setting({
style:'mF_classicHC',//风格样式
id:'myFocus',//焦点图ID
trigger:'click',//按钮切换模式：'click'(点击触发)/'mouseover'(悬停触发,默认有0.1秒延迟，可以自行添加参数'delay:毫秒'设置)
time:4,//切换图片的时间间隔，单位秒
txtHeight:26,//文字层高，26为推荐，0为隐藏
width:380,//宽(大图)，注意:整个焦点图的宽等于或大于图片宽
height:246//高(大图)，注意同上
});
</script>
</head>
<body>
<div id="myFocus">
<div class="loading"><span>请稍候...</span></div><!--载入画面-->
<ul class="pic"><!--内容列表-->
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不知以上的js图片轮换代码，大家是否满意，当然我们还有别的选择：
以上图片轮换效果代码，由教程集收集整理，希望对大家有所帮助。您可能感兴趣的文章：
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