Javascript counter and location.reload

 var interval = "";
 var incrementVar = 0;
 function increment(){
        incrementVar++;
        console.log(incrementVar);
        if(incrementVar>30) {
    location.reload(); 
    window.clearInterval(interval);
    incrementVar = 0;
         }
          
    }

   $(document).ready(function(){
    interval = setInterval( increment, 1000);
   })