HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>open() — blank write</title>
</head>
<body>
  <button type="button" id="openBtn">Open blank popup</button>
  <script>
    document.getElementById("openBtn").onclick = function () {
      var popup = window.open("", "BlankDemo", "width=320,height=180");
      if (popup) {
        popup.document.write("<p>Hello from a blank popup!</p>");
        popup.document.close();
      }
    };
  </script>
</body>
</html>

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JavaScript open() — blank and write (Try It)