人生最重要的是树立一个远大的目标，并下定决心去实现它. (歌德)
Index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>倒计时</title>
<script>
function toTwo(n)
{
if(n>9)
{
return ''+n;
}
else
{
return '0'+n;
}
}
window.onload=function(){
var oBox=document.getElementById('box');
var aImg=oBox.getElementsByTagName('img');
function time()
{
var enddate=new Date('2016/12/25 00:00:00');
var mydate=new Date();
var str='';
var t=enddate.getTime()-mydate.getTime();
str=toTwo(Math.floor(t/1000/60/60/24))+toTwo(Math.floor(t/1000/60/60%24))+toTwo(Math.floor(t/1000/60%60))+toTwo(Math.floor(t/1000%60));
for(var i=0;i<aImg.length;i++)
{
aImg[i].src='images/'+str[i]+'.png';
}
}
time();
setInterval(time,1000);
};
</script>
<style>
#box { width:1000px;
height:200px;
font-size:14px;
line-height:100px;
margin:auto;
}
#box img{ width:30px;
height:60px;
}
</style>
</head>
<body>
<div id="box">
<img src="images/0.png" />
<img src="images/0.png" /> 天:
<img src="images/0.png" />
<img src="images/0.png" /> 时:
<img src="images/0.png" />
<img src="images/0.png" /> 分:
<img src="images/0.png" />
<img src="images/0.png" /> 秒
</div>
</body>
</html>
运行结果如图：
