倒计时js代码

倒计时js代码精确到时分秒，使用方法：注意 var EndTime= new Date('2013/05/1 10:00:00'); //截止时间 这一句，特别是 '2013/05/1 10:00:00' 这个js日期格式一定要注意，否则在IE6、7下工作计算不正确哦。
js代码如下：
function GetRTime(){
var EndTime= new Date('2013/05/1 10:00:00'); //截止时间
var NowTime = new Date();
var t =EndTime.getTime() - NowTime.getTime();
/*var d=Math.floor(t/1000/60/60/24);
t-=d*(1000*60*60*24);
var h=Math.floor(t/1000/60/60);
t-=h*60*60*1000;
var m=Math.floor(t/1000/60);
t-=m*60*1000;
var s=Math.floor(t/1000);*/

var d=Math.floor(t/1000/60/60/24);
var h=Math.floor(t/1000/60/60%24);
var m=Math.floor(t/1000/60%60);
var s=Math.floor(t/1000%60);

document.getElementById("t_d").innerHTML = d + "天";
document.getElementById("t_h").innerHTML = h + "时";
document.getElementById("t_m").innerHTML = m + "分";
document.getElementById("t_s").innerHTML = s + "秒";
}
setInterval(GetRTime,1000);

function timeRun(hour,minute,second){
var hour = hour,
minute = minute,
second = second;
var timer = setInterval(function(){
second--;
if (second<0) {
second = 60;
$(".second").text(second);
minute--;
if (minute<0) {
minute = 60;
$(".second").text(minute);
hour--;
if (hour<0) {
$(".second").text("00");
//alert("倒计时结束！")
clearInterval(timer);
}else if (hour<10) {
$(".hour").text("0"+hour);
}else{
$(".hour").text(hour);
}
}else if (minute<10) {
$(".minute").text("0"+minute);
}else{
$(".minute").text(minute);
};
}else if (second<10) {
$(".second").text("0"+second);
}else{
$(".second").text(second);
};
},1000)
}

HTML代码：
<div id="times_wrap" class="time_num">
距离结束时间：
<div class="time_w">
<b id="times_d" class="time"> </b>天
<b id="times_h" class="time"> </b>时
<b id="times_m" class="time"> </b>分
<b id="times_s" class="time"> </b>秒
</div>
</div>

JavaScript代码：
<script type="text/javascript">
setTimeout("show_time()",1000);
var time_wrap = document.getElementByIdx_x("times_wrap");
var time_d = document.getElementByIdx_x("times_d");
var time_h = document.getElementByIdx_x("times_h");
var time_m = document.getElementByIdx_x("times_m");
var time_s = document.getElementByIdx_x("times_s");

var time_end = new Date("2012/10/29 08:00:00");  // 设定结束时间
time_end = time_end.getTime();

function show_time(){
var time_now = new Date();  // 获取当前时间
time_now = time_now.getTime();
var time_distance = time_end - time_now;  // 结束时间减去当前时间
var int_day, int_hour, int_minute, int_second;
if(time_distance >= 0){
// 天时分秒换算
int_day = Math.floor(time_distance/86400000)
time_distance -= int_day * 86400000;
int_hour = Math.floor(time_distance/3600000)
time_distance -= int_hour * 3600000;
int_minute = Math.floor(time_distance/60000)
time_distance -= int_minute * 60000;
int_second = Math.floor(time_distance/1000)

// 时分秒为单数时、前面加零站位
if(int_hour < 10)
int_hour = "0" + int_hour;
if(int_minute < 10)
int_minute = "0" + int_minute;
if(int_second < 10)
int_second = "0" + int_second;

// 显示时间
time_d.innerHTML = int_day;
time_h.innerHTML = int_hour;
time_m.innerHTML = int_minute;
time_s.innerHTML = int_second;

setTimeout("show_time()",1000);
}else{
time_d.innerHTML = time_d.innerHTML;
time_h.innerHTML = time_h.innerHTML;
time_m.innerHTML = time_m.innerHTML;
time_s.innerHTML = time_s.innerHTML;

// clearTimeout(timerID)
}
};
</script>