Untitled

<!DOCTYPE html>
<html>
<body>

<input type="text" id="demo">

<button type="button" onclick="printText()">
  Click Me!
</button>

<h2 id="h2_text">
</h2>

<script type="text/javascript">
  function printText() {
    var result = document.getElementById("demo").value;
    document.getElementById("h2_text").innerHTML = result;
  }
</script>

</body>
</html>