Tryit Editor v2.7

Edit This Code:

<!DOCTYPE html>
<html>
<body>

<p id="demo"></p>

<script>
  var x; // Declare x
  x = 5; // Assign 5 to x

  elem = document.getElementById("demo"); // Find an element 
  elem.innerHTML = x;                     // Display x in the element
</script>

</body>
</html>