workinprogress.txt

<!DOCTYPE html>
<html>
<body>


<script>
var startTime, endTime;

function start() {
  startTime = new Date();
};

function end() {
  endTime = new Date();
  var timeDiff = endTime - startTime; //in ms
  // strip the ms
  timeDiff /= 1000;

  // get seconds
  var seconds = Math.round(timeDiff % 60);
  

        document.secondsForm.secondsBox.value = seconds;  
        }

    //Stamp current time as stop time, compute elapsed time difference and display in textbox
    function EndTiming() {
        startTime = new  Date();      //stamp current time
        timeDiff = (endTime- startTime) / 1000; //compute elapsed time
        document.secondsForm.secondsBox.value = timeDiff ;  //set elapsed time in display box
        }

</script>
<button onclick="start()">Start</button>

<button onclick="end()">End</button>

<form name="secondsForm">
    Elapsed time:
      <input type="text" name="secondsBox" size="7">
    seconds
    </form>
</body>
</html>