JavaScript实现图片轮播的方法
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：
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
<title>无标题文档</title>
<scriptsrc="http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js"></script>
<style>
.img-divimg{display:none;}
</style>
</head>
<body>
<divid="slide">
<div>
<imgsrc="model.jpg"/>
<imgsrc="model2.jpg"/>
<imgsrc="model.jpg"/>
<imgsrc="model2.jpg"/>
<imgsrc="model.jpg"/>
</div>
<div>
<ahref="#">1</a>
<ahref="#">2</a>
<ahref="#">3</a>
<ahref="#">4</a>
<ahref="#">5</a>
</div>
</div>
<scripttype="text/javascript">
varzBase=
{
$id:function(id){returndocument.getElementById(id);},
$tagName:function(tagName,obj){return((obj?obj:document).getElementsByTagName(tagName));},
$c:function(clsN,obj)
{
vartag=this.$tagName('*'),reg=newRegExp('(^|\\s)'+clsN+'(\\s|$)'),arr=[];
for(vari=0;i<tag.length;i++)
{
if(reg.test(tag[i].className))
{
arr.push(tag[i]);
}
}
returnarr;
},
$add:function(obj,clsN)
{
varreg=newRegExp('(^|\\s)'+clsN+'(\\s|$)');
if(!reg.test(obj.className))
{
obj.className+=''+clsN;
}
},
$remove:function(obj,clsN)
{
varcla=obj.className;
varreg='/|\\s*'+clsN+'\\b/g';
obj.className=cla?cla.replace(eval(reg),''):'';
},
css:function(obj,attr,value)
{
if(value)
{
obj.style[attr]=value;
}
else
{
returntypeofwindow.getComputedStyle!="undefined"?window.getComputedStyle(obj,null)[attr]:obj.currentStyle[attr];
}
},
easing:
{
liner:function(t,b,c,d){returnc*t/d+b},
easeOut:function(t,b,c,d){return-c*((t=t/d-1)*t*t*t-1)+b}
},
config:
{
index:0,
auto:true,
direct:'left'
},
init:function()
{
this.slide=this.$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)
{
vard=1000;
if(obj[attr+"timer"]){clearInterval(obj[attr+"timer"])};
varstart=parseInt(zBase.css(obj,attr));
varspace=val-start,st=(newDate().getTime()),m=space>0?'cell':'floor';
obj[attr+'timer']=setInterval(function(){
vart=(newDate().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(vari=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(varj=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(){
vartags=zBase.$tagName('img',this.img_div);
//zBase.$tagName('img',this.img_div)[zBase.config.index].style.display="block";
for(vari=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(varj=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。