js 倒数计时器

1.JS倒数计时器

<p>
<span id="test" style=" display:block; font-size:20px; font-weight:700; color:#0F0;">距离晚会开始时间:</span>
</p>

var timer;
var maxtime = 10000; //一个小时，按秒计算，自己调整!
function CountDown(){
if(maxtime>=0){
time = formatMinutes(maxtime);
document.getElementById("test").innerHTML=time;
if(maxtime !=0){
--maxtime;
}else{
clearInterval(timer);
}
}
}

function formatMinutes(minutes){
var day = parseInt(Math.floor(minutes / 86400));
var hour = day >0? Math.floor((minutes - day*86400)/3600):Math.floor(minutes/3600);
var minute = hour > 0? Math.floor((minutes -day*86400 - hour*3600)/60):Math.floor(minutes/60);
var second = minute > 0? Math.floor(minutes -day*86400 - hour*3600-minute*60):minutes;
var time="";
if (day > 0) time += day + "天";
if (hour > 0) time += hour + "小时";
if (minute > 0) time += minute + "分钟";
time += second+"秒";
time ="距离晚会结束还有:"+time;
return time;
}
function dateFormate(currentTimeMillis){
var d = new Date();
d.setTime(currentTimeMillis);
// var str = d.Format("yyyy年MM月dd HH:mm:ss");
var str = d.Format("yyyy年MM月dd日 hh:mm:ss");
document.getElementById("test1").innerHTML="转换后的时间:"+str;
}
$(document).ready(function(){
timer = setInterval("CountDown()",1000);
});