HTML Code

<!DOCTYPE html>
<html lang="en" class="demo-root">
<head>
  <meta charset="utf-8">
  <title>firstElementChild attributes</title>
</head>
<body>
  <pre id="out"></pre>
  <script>
    var html = document.firstElementChild;
    document.getElementById("out").textContent =
      "tag: " + html.tagName + "\n" +
      "lang: " + html.getAttribute("lang") + "\n" +
      "class: " + html.className;
  </script>
</body>
</html>

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