Node-appendChild-script-and-button-from-div.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/insertion-removing-steps/Node-appendChild-script-and-button-from-div.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Node.appendChild: inserting script and button from a div</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<form id="form"></form>

<script>

let button = null;

let buttonForm = null;

test(() => {

  const form = document.getElementById("form");

  const script = document.createElement("script");

  script.textContent = `

    buttonForm = button.form;

`;

  button = document.createElement("button");

  const div = document.createElement("div");

  div.appendChild(script);

  div.appendChild(button);

  assert_equals(buttonForm, null);

  form.appendChild(div);

  assert_equals(buttonForm, form);

}, "Script inserted before a form-associated button can observe the button's " +

   "form, because by the time the script executes, the DOM insertion that " +

   "associates the button with the form is already done");

</script>