js 倒计时,刚刚用到就直接发上来nbsp;html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br>
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<title>JS时间倒计时</title>
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<script><br />
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var time_now_server,time_now_client,time_end,time_server_client,timerID;<br />
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//结束时间<br />
time_end=new Date("2014/10/31 09:00:00");<br />
time_end=time_end.getTime();<br />
//开始的时间:如果不填入时间日期默认为当前的日期时间<br />
time_now_server=new Date;<br />
time_now_server=time_now_server.getTime();<br />
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time_now_client=new Date();<br />
time_now_client=time_now_client.getTime();<br />
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time_server_client=time_now_server-time_now_client;<br />
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setTimeout("show_time()",1000);<br />
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//显示时间函数<br />
function show_time()<br />
{<br />
var timer = document.getElementById("timer");<br />
if(!timer){<br />
return ;<br />
}<br />
timer.innerHTML =time_server_client;<br />
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var time_now,time_distance,str_time;<br />
var int_day,int_hour,int_minute,int_second;<br />
var time_now=new Date();<br />
time_now=time_now.getTime()+time_server_client;<br />
time_distance=time_end-time_now;<br />
if(time_distance>0)<br />
{<br />
int_day=Math.floor(time_distance/86400000)<br />
time_distance-=int_day*86400000;<br />
int_hour=Math.floor(time_distance/3600000)<br />
time_distance-=int_hour*3600000;<br />
int_minute=Math.floor(time_distance/60000)<br />
time_distance-=int_minute*60000;<br />
int_second=Math.floor(time_distance/1000)<br />
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if(int_hour<10){<br />
int_hour="0"+int_hour;<br />
}<br />
if(int_minute<10){<br />
int_minute="0"+int_minute;<br />
}<br />
if(int_second<10){<br />
int_second="0"+int_second;<br />
}<br />
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str_time=int_day+"天"+int_hour+"小时"+int_minute+"分钟"+int_second+"秒";<br />
timer.innerHTML=str_time;<br />
setTimeout("show_time()",1000);<br />
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}<br />
else<br />
{<br />
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timer.innerHTML =timer.innerHTML;<br />
clearTimeout(timerID)<br />
window.location.href="http://www.baidu.com";<br />
}<br />
}<br />
</script><br>
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