请问一个JS的问题?? 很难的, 我做了一上午没做出来

// JScript 文件
function CountDown()
{
this.customDateTime=({years:0,months:0,days:0,hours:0,minutes:0,seconds:0,Ms:0});
this.timerVariable=1111;
this.countMs=0;
this.successCallBack="";
this.triggerCallBack="";}
CountDown.prototype =
{
//计时开始并返回自定义时间对象,countMs倒计时的毫秒数,successCallBack回调函数名称,触发回调triggerCallBack
timer:function(countMs,successCallBack,triggerCallBack)
{
  /* alert("sss");
    alert(this.timer);
alert(this.timerVariable+"\n"+triggerCallBack+"()\n"+successCallBack+"\n"+triggerCallBack);*/
this.successCallBack=successCallBack;
this.triggerCallBack=triggerCallBack;
this.countMs=countMs;
this.IsRun=true;
var THIS=this;
this.countMs=this.countMs-1000;
this.convertToDateTime(this.countMs);
eval(this.triggerCallBack+"()");
if(this.countMs<=0)
{
   this.IsRun=false;
   eval(successCallBack+"()");
}
function run()
{
   THIS.timer(THIS.countMs,THIS.successCallBack,THIS.triggerCallBack);
}
if(this.IsRun)
{
                  //setTimeout无返回值
   setTimeout(run(),10000));
}

},
//将时分秒转化为毫秒type:Hours/Minutes/Seconds
convertToMS:function(count,type)
{
var customMs=0;
if(count>0)
{
if(Type=="Hours")
    {
customMs=count*60*60*1000;
    }
     else if(Type=="Minutes")
    {
     customMs=count*60*1000;
    }
    else if(Type=="Seconds")
    {
        customMs=count*1000;
    }
}

},
//将毫秒转化为自定义时间对象输出
convertToDateTime:function(inputMs)
{
    var years=0;
    var months=0;
    var days=0;
    var hours=0;
    var minutes=0;
    var seconds=0;
    var Ms=0;
    if(inputMs>0)
    {
        if(inputMs>=(365*24*60*60*1000))
        {
            years=Math.floor(inputMs/(365*24*60*60*1000));
            inputMs=inputMs-(365*24*60*60*1000)*years;
        }
        if(inputMs>=(30*24*60*60*1000))
        {
             months=Math.floor(inputMs/(30*24*60*60*1000));
             inputMs=inputMs-months*(30*24*60*60*1000);
        }
        if(inputMs>=(24*60*60*1000))
        {
            days=Math.floor(inputMs/(24*60*60*1000));
            inputMs=inputMs-days*(24*60*60*1000);
        }
        if(inputMs>=(60*60*1000))
        {
            hours=Math.floor(inputMs/(60*60*1000));
            inputMs=inputMs-hours*(60*60*1000);
        }
        if(inputMs>=(60*1000))
        {
            minutes=Math.floor(inputMs/(60*1000));
            inputMs=inputMs-minutes*(60*1000);
        }
        if(inputMs>=1000)
        {
            seconds=Math.floor(inputMs/1000);
            inputMs=inputMs-seconds*1000;
        }
        if(inputMs>1)
        {
            Ms=inputMs;
        }
       this.customDateTime.years=years;
       this.customDateTime.months=months;
       this.customDateTime.days=days;
       this.customDateTime.hours=hours;
       this.customDateTime.minutes=minutes;
       this.customDateTime.seconds=seconds;
       this.customDateTime.Ms=Ms;
    }


}

}

解决方案 »

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问题:
1:为什么我的setTimeout无返回值
2:我该怎么样实现这个计时器
页面用法<script type="text/javascript" src="../JS/Timer.js"></script>
<script type="text/javascript" >var Timer=new CountDown();
var inputMs=1000*60;
Timer.timer(inputMs,'Success','Trigger');function Trigger()
{
var MyDate=Timer.customDateTime;
var Result="";
Result+="Years:"+MyDate.years+"<br />";
Result+="Months:"+MyDate.months+"<br />";
Result+="Days:"+MyDate.days+"<br />";
Result+="Hours:"+MyDate.hours+"<br />";
Result+="Minutes"+MyDate.minutes+"<br />";
Result+="Seconds:"+MyDate.seconds+"<br />";
Result+="Ms:"+MyDate.Ms+"<br />";
document.write(Result);
}
function Success()
{
alert("Success");
return;
}
</script>
div   id=test   ></div>
  <script>
  var   alltime=300;
  function   setTime(){
  if   (alltime<=0){
  alert("时间到！");
  clearInterval(s);
  }
  else{
  alltime--;
  m=Math.floor(alltime/60);
  se=Math.round(alltime-(Math.floor(alltime/60)*60));
  test.innerText="剩余"+m+"分"+se+"秒";
  }
  }
  s=setInterval("setTime()",1000)
  </script>  1.计时器的范例代码
<html>
<head>
<title>计时器的范例</title>
<script language="javascript">

</script>
</head>
<body>
<form name="frmtimer" action="" method="post">
<hr>
<input type="text" name="thzt" id="thzt">
<br>
<input type="button" value="开始计时" name="start" onClick="DoCallTimer()">
<input type="button" value="停止" name="stop" onClick="clearTimeout(window.timer1);">
<hr>
</form>
</body>
</html>  2.倒计时器的范例代码
<html>
<head>
<title>计时器的范例</title>
<script language="javascript">

</script>
</head>
<body>
<form name="frmtimer" action="" method="post">
<hr>
<input type="text" name="thzt" id="thzt" onKeyup="value="/blog/value.replace(/["^\d]/g,'');setBegintime()">
<br>
<input type="button" value="开始倒计时" name="conversestart" onClick="DoConverseCallTimer()">
<input type="button" value="停止" name="stop" onClick="clearTimeout(window.timer1);">
<hr>
</form>
</body>
</html>
改成这样应该就可以了，前提是你的程序能运行到这里。window.setTimeout("run()",10000);
window.setTimeout
我用过不行
还是没返回值