php+js实现倒计时功能
js部分
setInterval("time_controller()",1000);
functiontime_controller(){
$(".time_val").each(function(){
vartime_id="time_show_"+$(this).attr('for');
vartime_val=$(this).attr('value');
$(this).attr('value',time_val-1);
show_time(time_id,time_val*1000);
});
}
functionshow_time(id,timestamp)
{
vartimer=document.getElementById(id);
varstr_time,int_day,int_hour,int_minute,int_second;
vartime_distance=timestamp;
if(time_distance>0)
{
int_day=Math.floor(time_distance/86400000)
time_distance-=int_day*86400000;
int_hour=Math.floor(time_distance/3600000)
time_distance-=int_hour*3600000;
int_minute=Math.floor(time_distance/60000)
time_distance-=int_minute*60000;
int_second=Math.floor(time_distance/1000)
if(int_hour<10)
int_hour="0"+int_hour;
if(int_minute<10)
int_minute="0"+int_minute;
if(int_second<10)
int_second="0"+int_second;
str_time="<b>剩余时间："+int_day+"天"+int_hour+"小时"+int_minute+"分钟"+int_second+"秒</b>";
timer.innerHTML=str_time;
}else{
timer.innerHTML="<b>剩余时间：0天0小时0分钟0秒</b>";
}
}
html部分，php和js的时间倒计时
<divid="time_show_{$list.cmd_id}"></div>
<inputtype="hidden" for="{$list.cmd_id}"value="{$list.time_val}"/>