JS Countdown function

<input id= "Countdown" type= "text" value= "140 50 minutes 20 seconds" >

<Script>varOcountdown=document.getElementById ("Countdown"), Nowstamps=Date.now ()-  -,            //Current time of the serverEndstamps=Date.now ()+ 50000 -  -,    //Activity End Timestampdiff=Nowstamps-Date.now (); //local time and server lagfunctionUpdatecountdown (nowstamps) {varTimeLeft=(Endstamps-nowstamps)/,Hour=parseint (TimeLeft/3600),minute=parseint (TimeLeft%3600/),seconds=parseint (TimeLeft% -); Ocountdown.value=Hour+ "when" +minute+ "points" +seconds+ "seconds"; returnTimeLeft;}functionrun () {Nowstamps=Date.now ()+diff; //Current time of the server    if(Updatecountdown (nowstamps)> 0) {    //Update Countdown TimeSetTimeout (Run, -); //fix + 100 adjustment error    } Else{Ocountdown.value= "activity has ended"; }}settimeout (Run, -);</Script>