巴西世界杯是足球迷的今年最终关注的事情，做为球迷的我也不例外，自己做了一个巴西世界杯的倒计时。
<!DOCTYPE html>
<html>
<head>
<title>巴西世界杯倒计时时间</title>
<meta charset="utf-8" />
</head>
<body>
<h2>巴西世界杯倒计时：</h2>
<p id="time">时间加载中......</p>
<script type="text/javascript">
//2014-04-20 12:10:18
var to1 = 2014;
var to2 = 6;
var to3 = 13;
var to4 = 4;
var to5 = 0;
var to6 = 0;
var time = document.getElementById(‘time‘);
function timer(){
var now = new Date();
var y = now.getFullYear();
var m = now.getMonth();
var d = now.getDate();
var h = now.getHours();
var me = now.getMinutes();
var s = now.getSeconds();
var s1 = to1-y;
var s2 = to2-m-1;
var s3 = to3-d;
var s4 = to4-h;
var s5 = to5-me;
var s6 = to6-s;
if(s2<0){
s2 = s2+12;
s1 = s1-1;
}
if(s3<0){
if(m==2){
if((y%4==0 && y%100!=0) || y%400 ==0){
s3 = s3+29;
}else{
s3 = s3+28;
}
}else if(m==4|| m==6|| m==8 || m==11){
s3 = s3+30;
}else{
s3 = s3+31;
}
s2 = s2-1;
}
if(s4<0){
s4 = s4+24;
s3 = s3-1;
}
if(s5<0){
s5 = s5+60;
s4 = s4-1;
}
if(s6<0){
s6 = s6+60;
s5 = s5-1;
}
time.innerHTML = "现在距离"+to1+"年"+to2+"月"+to3+"日"+to4+":"+to5+":"+to6+"还有："+s1+"年"+s2+"个月"+s3+"天"+s4+"小时"+s5+"分"+s6+"秒";
}
setInterval(function(){timer()},1000);
</script>
</body>
</html>
运行效果如下：