我需要一个同时工作的倒数计时器

Question

1. 嗨，大家好？我需要帮助，我想要一种情况，在一定时间后，第一个计时器应该停止计数，而第二个计时器执行并更新“BREAK TIME”，如果页面刷新，第一个计时器将不会执行，直到第二个计时器完成执行，反之亦然。

   <script>
   
   
    let element = document.querySelector('#countdown');
       let breakTime = document.querySelector("#countdownbreak"),myD=true;
       function TimeFii(){
         time_difference = (60*1) -(((Date.now()-localStorage.getItem('realTime'))/1000) | 0); //60 if duration = 60*1
         hours = (time_difference/3600) | 0;
         minutes = ((time_difference % 36000) / 60)  | 0;
         seconds = (time_difference %60)|0;
         hours = hours<10 ? "0"+hours:hours
         minutes =  minutes < 10 ? "0"+minutes:minutes//00
         seconds = seconds <10 ?"0"+seconds:seconds
           uniseconds = seconds;
           element.textContent = minutes+":"+seconds;
           if(time_difference<=0){
             var start = Date.now()+100;`enter code here`
             localStorage.setItem('realTime',start);
           }
           if(seconds==39){
             stop();
             resetFii();
             element.innerHTML =""
             localStorage.setItem('noStart',myD)
             startFiiTimer(TimeFiiBreak);
           }
       }
   
       function TimeFiiBreak(){
         time_difference = (60*3) -(((Date.now()-localStorage.getItem('realBTime'))/1000) | 0); //60 if duration = 60*1
         hours = (time_difference/3600) | 0;
         minutes = ((time_difference % 36000) / 60)  | 0;
         seconds = (time_difference %60)|0;
         hours = hours<10 ? "0"+hours:hours
         minutes =  minutes < 10 ? "0"+minutes:minutes//00
         seconds = seconds <10 ?"0"+seconds:seconds
           uniseconds = seconds;
           breakTime.textContent = "BREAK TIME:"+minutes+":"+seconds;
           if(time_difference<=0){
             var start = Date.now()+100;
             localStorage.setItem('realBTime',start);
           }
           if(seconds==40){
             stopB();
             resetBFii();
             startFiiTimer(TimeFii);
   
           }
       }
   
       function startFiiTimer(fun){
         return setInterval(fun,100);
       }
   
   
       function resetFii(){
           return localStorage.removeItem('realTime');
       }
       function stop(){
         return clearInterval(TimeFii)
       }
   
       function resetBFii(){
           return localStorage.removeItem('realBTime');
       }
       function stopB(){
         return clearInterval(TimeFii)
       }
       window.onload = function (){
         if(myD !=false){
           startFiiTimer(TimeFii);
         }
       }
   
   </script>

   请上面的代码段运行，但不是我想要的，您可以访问fastplay24.com查看计时器的示例。谢谢

Answer 1

setInterval（）返回一个timer id，你需要在调用clearInterval（）时使用它，而不是函数本身。就像是：

idtimerfii = setInterval(fun,100);

clearInterval(idtimerfii)