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js倒计时

2012-10-25 21:42 176 查看

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

<title>JS时间倒计时</title>

<script type="text/javascript">
var time_now_server,
time_now_client,
time_end,
time_server_client,
timerID;

time_end=new Date("2010/10/4 11:10:1");//结束的时间
time_end=time_end.getTime();

time_now_server=new Date("2010/9/04 10:10:1");//开始的时间
time_now_server=time_now_server.getTime();

time_now_client=new Date();
time_now_client=time_now_client.getTime();

time_server_client=time_now_server-time_now_client;

setTimeout("show_time()",1000);

function show_time()
{
var timer = document.getElementById("timer");
if(!timer){
return ;
}
timer.innerHTML =time_server_client;

var time_now,time_distance,str_time;
var int_day,int_hour,int_minute,int_second;
var time_now=new Date();
time_now=time_now.getTime()+time_server_client;
time_distance=time_end-time_now;
if(time_distance>0)
{
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)

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;
str_time=int_day+"天"+int_hour+"小时"+int_minute+"分钟"+int_second+"秒";
timer.innerHTML=str_time;
setTimeout("show_time()",1000);
}
else
{
timer.innerHTML =timer.innerHTML;
clearTimeout(timerID)
}
}

</script>

</head>

<body>

<div id="timer">这里会被替换成例如：**天**小时**分钟**秒</div>

</body>

</html>

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