JavaScript图片轮播的实例分享
本文实例讲述了JavaScript实现图片轮播的方法。分享给大家供大家参考。具体如下：
这里没有使用到JQUERY，没有过渡效果，图片可自行替换 。
test2.html页面：
<!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>无标题文档</title>
<script src="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script>
<style>
.img-div img{display:none;}
</style>
</head>
<body>
<div class="slide" id="slide">
<div class="img-div">
<img src="model.jpg" />
<img src="model2.jpg" />
<img src="model.jpg" />
<img src="model2.jpg" />
<img src="model.jpg" />
</div>
<div class="slide-btn">
<a href="#" class="hover">1</a>
<a href="#" class="hover">2</a>
<a href="#" class="hover">3</a>
<a href="#" class="hover">4</a>
<a href="#" class="hover">5</a>
</div>
</div>
<script type="text/javascript">
var zBase=
{
$id:function(id){return document.getElementById(id);},
$tagName:function(tagName,obj){return ((obj?obj:document).getElementsByTagName(tagName));},
$c:function(clsN,obj)
{
var tag=this.$tagName('*'),reg=new RegExp('(^|\\s)'+clsN+'(\\s|$)'),arr=[];
for(var i=0;i<tag.length;i++)
{
if(reg.test(tag[i].className))
{
arr.push(tag[i]);
}
}
return arr;
},
$add:function(obj,clsN)
{
var reg=new RegExp('(^|\\s)'+clsN+'(\\s|$)');
if(!reg.test(obj.className))
{
obj.className+=' '+clsN;
}
},
$remove:function(obj,clsN)
{
var cla=obj.className;
var reg='/|\\s*'+clsN+'\\b/g';
obj.className=cla?cla.replace(eval(reg),''):'';
},
css:function(obj,attr,value)
{
if(value)
{
obj.style[attr]=value;
}
else
{
return typeof window.getComputedStyle!="undefined"?window.getComputedStyle(obj,null)[attr]:obj.currentStyle[attr];
}
},
easing:
{
liner:function(t,b,c,d){return c*t/d+b},
easeOut:function(t,b,c,d){return -c*((t=t/d-1)*t*t*t-1)+b}
},
config:
{
index:0,
auto:true,
direct:'left'
},
init:function()
{
this.slide=this.$id('slide');
this.img_div=this.$c('img-div')[0];
this.slide_btn=this.$tagName('a',this.$c('slide-btn')[0]);
this.img_arr=this.$tagName('img',this.img_div);
if(this.config.auto){this.play();}
this.hover();
},
animate:function(obj,attr,val)
{
var d=1000;
if(obj[attr+"timer"]){clearInterval(obj[attr+"timer"])};
var start= parseInt(zBase.css(obj,attr));
var space=val-start,st=(new Date().getTime()),m=space>0?'cell':'floor';
obj[attr+'timer']=setInterval(function(){
var t=(new Date().getTime()-st);
if(t<d)
{
zBase.css(obj,attr,Math[m](zBase.easing["easeOut"](t,start,space,d))+"px");
}
else
{
clearInterval(obj[attr+'timer']);
zBase.css(obj,attr,top+space+"px");
}
},20);
},
hover:function()
{
for(var i=0;i<this.slide_btn.length;i++)
{
this.slide_btn[i].index=i;
this.slide_btn[i].onmouseover=function()
{
if(zBase.slide.timer)
{
clearInterval(zBase.slide.timer);
}
zBase.config.index=this.index;
//console.log(this.slide_btn);
for(var j=0;j<zBase.slide_btn.length;j++)
{
zBase.$remove(zBase.slide_btn[j],'hover');
}
zBase.$add(zBase.slide_btn[zBase.config.index],'hover');
zBase.animate(zBase.img_div,zBase.config.direct,-zBase.config.index*1000);
}
this.slide_btn[i].onmouseout=function()
{
zBase.play();
}
}
},
play:function(){
this.slide.timer = setInterval(function(){
var tags=zBase.$tagName('img',this.img_div);
//zBase.$tagName('img',this.img_div)[zBase.config.index].style.display="block";
for(var i =0;i<tags.length;i++)
{
if(zBase.config.index==i)
{
zBase.$tagName('img',this.img_div)[zBase.config.index].style.display="block";
}
else
{
zBase.$tagName('img',this.img_div)[i].style.display="none";
}
}
zBase.config.index++;
if(zBase.config.index>=zBase.img_arr.length) zBase.config.index=0;
zBase.animate(zBase.img_div,zBase.config.direct,-zBase.config.index*500);
for(var j=0;j<zBase.slide_btn.length;j++){
zBase.$remove(zBase.slide_btn[j],'hover') ;
}
zBase.$add(zBase.slide_btn[zBase.config.index],'hover');
},3000)
}
}
zBase.init();
</script>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。
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