<!DOCTYPE html> <meta charset="utf-8"> <title>DocumentFragment constructor</title> <link rel="help" href="https://dom.spec.whatwg.org/#dom-documentfragment-documentfragment"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script> "use strict"; test(() => { const fragment = new DocumentFragment(); assert_equals(fragment.ownerDocument, document); }, "Sets the owner document to the current global object associated document"); test(() => { const fragment = new DocumentFragment(); const text = document.createTextNode(""); fragment.appendChild(text); assert_equals(fragment.firstChild, text); }, "Create a valid document DocumentFragment"); </script>