由于本人JS不好。所以JS写得笨了些。希望高手指教 <script language="JavaScript"> 
function ShowTimes(){ 
var AfterTime= new Date("12-11-2012 14:00:00"); //这里是北京上市会时间
LeaveTime = AfterTime - new Date(); 
var ne = document.getElementById("dh"); 
if(0 >= LeaveTime){
clearInterval(id);
    ne.innerHTML="已开始";
return false;
}
LeaveDays=Math.floor(LeaveTime/(1000*60*60*24)); 
LeaveHours=Math.floor(LeaveTime/(1000*60*60)%24); 
LeaveMinutes=Math.floor(LeaveTime/(1000*60)%60); 
LeaveSeconds=Math.floor(LeaveTime/1000%60); 
var c=new Date(); 
var q=c.getMilliseconds(); 
ne.innerHTML="距<font color=red>北京上市会</font>还有<font color=red>"
+LeaveDays+"</font>天 <font color=red>"
+LeaveHours+"</font>时 <font color=red>"
+LeaveMinutes+"</font>分 <font color=red>"
+LeaveSeconds+"</font>秒 <font color=red>"
+q+"</font>";
}
var id = setInterval(ShowTimes,10); 
</script>
 <script language="JavaScript"> 
function ShowTimesh(){ 
var AfterTimes= new Date("12-12-2012 14:00:00"); //这里是上海上市会时间
LeaveTimes = AfterTimes - new Date(); 
var ne = document.getElementById("sh"); 
if(0 >= LeaveTimes){
clearInterval(id);
    ne.innerHTML="已开始";
return false;
}
LeaveDays=Math.floor(LeaveTimes/(1000*60*60*24)); 
LeaveHours=Math.floor(LeaveTimes/(1000*60*60)%24); 
LeaveMinutes=Math.floor(LeaveTimes/(1000*60)%60); 
LeaveSeconds=Math.floor(LeaveTimes/1000%60); 
var c=new Date(); 
var q=c.getMilliseconds(); 
ne.innerHTML="距<font color=red>上海上市会</font>还有<font color=red>"
+LeaveDays+"</font>天 <font color=red>"
+LeaveHours+"</font>时 <font color=red>"
+LeaveMinutes+"</font>分 <font color=red>"
+LeaveSeconds+"</font>秒 <font color=red>"
+q+"</font>";
}
var id = setInterval(ShowTimesh,10); 
</script> <script language="JavaScript"> 
function ShowTimesh(){ 
var AfterTimes= new Date("12-13-2012 14:00:00"); //这里是广州上市会时间
LeaveTimes = AfterTimes - new Date(); 
var ne = document.getElementById("gz"); 
if(0 >= LeaveTimes){
clearInterval(id);
    ne.innerHTML="已开始";
return false;
}
LeaveDays=Math.floor(LeaveTimes/(1000*60*60*24)); 
LeaveHours=Math.floor(LeaveTimes/(1000*60*60)%24); 
LeaveMinutes=Math.floor(LeaveTimes/(1000*60)%60); 
LeaveSeconds=Math.floor(LeaveTimes/1000%60); 
var c=new Date(); 
var q=c.getMilliseconds(); 
ne.innerHTML="距<font color=red>广州上市会</font>还有<font color=red>"
+LeaveDays+"</font>天 <font color=red>"
+LeaveHours+"</font>时 <font color=red>"
+LeaveMinutes+"</font>分 <font color=red>"
+LeaveSeconds+"</font>秒 <font color=red>"
+q+"</font>";
}
var id = setInterval(ShowTimesh,10); 
</script><span id="dh" style="padding-left:220px;margin:5px;color:#000000; font-size:18px;" ></span>
<br/><span id="sh" style="padding-left:220px;margin:5px;color:#000000; font-size:18px;" ></span>
<br/>
<span id="gz" style="padding-left:220px;margin:5px;color:#000000; font-size:18px;" ></span>

解决方案 »

  1.   

    <!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>
    <title>azhong.com </title>
    <meta name="generator" content="editplus" />
    <meta name="author" content="" />
    <meta name="keywords" content="" />
    <meta name="description" content="" />
    <style type="text/css">
       #liTimeLimit
       {
           font: 16px Arial, Helvetica, sans-serif;font-weight: bold;color: #00ff06;background-color: #000;height:20px;line-height:20px;width: 150px;text-align: center; margin-top:8px;
       }
    </style>
    </head><body>离15:02 3/27/2013<span id="liTimeLimit">2<span class="witha">天</span> 07:35:50</span>
    <script language="JavaScript" type="text/JavaScript" content="1">
       
       var dDateHead = new Date("15:02 3/27/2013");
       function showTimeLimit()
       {
           setTimeout("showTimeLimit()",1000);
           var dNowDay = new Date();
           iTimeLimit = dDateHead.getTime()-dNowDay.getTime();
           if(iTimeLimit>0){
            msSec = 1000;//一秒毫秒数  
           msMin = 60*msSec;//一分钟毫秒数
           msHour = 60*msMin;//一小时毫秒数
           msDay = 24*msHour;//一天的毫秒数        iDay=Math.floor(iTimeLimit/msDay);
           iHour=Math.floor(iTimeLimit/msHour);
           iMin=Math.floor((iTimeLimit-iHour*msHour)/msMin);
           iSec=Math.floor((iTimeLimit-iHour*msHour-iMin*msMin)/msSec);
           iHour = iHour>=24?Math.floor(iHour%24):iHour;
           iHour = iHour<10&&iHour>0?"0"+iHour:iHour;
           iMin = iMin<10?"0"+iMin:iMin;
           iSec = iSec<10?"0"+iSec:iSec;
           document.getElementById("liTimeLimit").innerHTML=iDay+"<span class=\"witha\">天</span>"+iHour+":"+iMin+":"+iSec;
           }
           
       }
    showTimeLimit();
    </script>
    </body>
    </html>
      

  2.   

    同意楼上的,日期字符串格式问题,把-换成/就行了,用replace函数