dialog.html

<!-- The HTML <dialog> element represents a dialog box or other interactive component, such as an inspector or window

	-->
<!--

	<dialog open>
  <p>Greetings, one and all!</p>
</dialog>

-->
<dialog id="favDialog">
  <form method="dialog">
    <section>
      <p><label for="favAnimal">Favorite animal:</label>
      <select id="favAnimal">
        <option></option>
        <option>Brine shrimp</option>
        <option>Red panda</option>
        <option>Spider monkey</option>
      </select></p>
    </section>
    <menu>
      <button id="cancel" type="reset">Cancel</button>
      <button type="submit">Confirm</button>
    </menu>
  </form>
</dialog>

<menu>
  <button id="updateDetails">Update details</button>
</menu>


<script>
		
		(function() {
  var updateButton = document.getElementById('updateDetails');
  var cancelButton = document.getElementById('cancel');
  var favDialog = document.getElementById('favDialog');

  // Update button opens a modal dialog
  updateButton.addEventListener('click', function() {
    favDialog.showModal();
  });

  // Form cancel button closes the dialog box
  cancelButton.addEventListener('click', function() {
    favDialog.close();
  });
})();

</script>