JavaScript button?

Question

I want to make a button that adds on 0.00142 each time and I've created a simple JavaScript function but it doesn't seem to work?

Any help? Thanks! :)

<input type="button" value="Count" id="countButton" />



<p>You've burned <span id="displayCount">0</span> Calories!</p>



<script type="text/javascript">

  var count = +0.00142;

  var button = document.getElementById("countButton");

  var display = document.getElementById("displayCount");



  button.onclick = function(){

    count++;

    display.innerHTML = count;

  }

</script>

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Answer 1

<script type="text/javascript">
  var total = 0;
  var count = 0.00142;
  var button = document.getElementById("countButton");
  var display = document.getElementById("displayCount");

  button.onclick = function(){
    total = total + count;
    display.innerHTML = total;
  }
</script>

JavaScript button?

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