tEqual('#text', $('#para-empty').firstChild.nodeName);
</script>

<script id=appendChild>
  let append = document.createElement('h1');
  testing.expectEqual('[object HTMLHeadingElement]', content.appendChild(append).toString());
  testing.expectEqual('HTMLHeadingElement', content.lastChild.__proto__.constructor.name);
  testing.expectEqual('[object HTMLAnchorElement]', content.appendChild(link).toString());
</script>

<script id=cloneNode>
  let clone = link.cloneNode();
  testing.expectEqual('[object HTMLA