HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>createElement MDN</title>
  <style>body{font-family:system-ui,sans-serif;padding:1.5rem;} #div1{border:1px solid #ccc;padding:1rem;margin-top:0.5rem;} button{margin-bottom:0.75rem;}</style>
</head>
<body>
  <button id="btn" type="button">Add element (MDN pattern)</button>
  <div id="div1">The text above has been created dynamically.</div>
  <script>
    document.getElementById("btn").addEventListener("click", function () {
      var newDiv = document.createElement("div");
      var newContent = document.createTextNode("Hi there and greetings!");
      newDiv.appendChild(newContent);
      var currentDiv = document.getElementById("div1");
      document.body.insertBefore(newDiv, currentDiv);
    });
  </script>
</body>
</html>

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