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<!DOCTYPE html>
<html>
<body>
<h1>HTML Objects</h1>
<h2>The Dialog Object</h2>
<p>Click the button to create a DIALOG element with some text.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
  const dialog = document.createElement("DIALOG");
  const textNode = document.createTextNode("This is an open dialog window");
  dialog.setAttribute("open", "open");
  dialog.appendChild(textNode);
  document.body.appendChild(dialog);
}
</script>
</body>
</html>