SOURCE

var n = 0;
var start = 0;

//$(".Inp").click(function(){
//  var newTime = new Date();
//  $(".Inp").html(newTime+"<br>");
//});

$(document).keyup(function(event){
  
  var newTime = new Date();
  if(n == 0){
    start = newTime;
  }
  n = n +1;
  var showTime = newTime - start;
  if(showTime<10000){
    $(".Inp").html(n + "<br>"+showTime/1000);
  };
  
});    

<div class="Inp">
  
</div>

.Inp {
  display: block;
  height:500px;
  width:500px;
  border:1px solid black;
}