time-clock/app.js at master · MuhammadMaazKhan/time-clock · GitHub

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var min=0;
var sec=0;
var msec=0;

var minheading=document.getElementById("min");
var secheading=document.getElementById("sec");
var msecheading=document.getElementById("msec");

var interval;
function timer(){
    msec++
     msecheading.innerHTML=msec;
     if (msec>=100){
         sec++
         secheading.innerHTML=sec;
         msec=0

     }
     else if (sec>=60){
         min ++
         minheading.innerHTML=min;
         sec=0
     }
}
function start(){
interval=setInterval(timer,10)
document.getElementById("start").disabled = "true"
}


function stop(){
    clearInterval(interval)
}
function reset(){
    min=0;
    sec=0;
    msec=0;
    minheading.innerHTML= min
    secheading.innerHTML=sec
    msecheading.innerHTML= msec
    stop()

}