File: button-submit-children.html

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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Joey Arhar" href="mailto:jarhar@chromium.org">

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

<iframe name=frame1 id=frame1></iframe>
<form id=form1 target=frame1 action="does_not_exist.html">
  <button id=submitbutton type=submit>
    <div id=buttonchilddiv>
      button child div text
    </div>
  </button>
</form>

<script>
async_test(t => {
  window.addEventListener('load', () => {
    const frame1 = document.getElementById('frame1');
    frame1.addEventListener('load', t.step_func_done(() => {}));

    const submitButton = document.getElementById('submitbutton');
    submitButton.addEventListener('click', event => {
      event.preventDefault();
      const form = document.getElementById('form1');
      form.submit();
    });

    const buttonChildDiv = document.getElementById('buttonchilddiv');
    buttonChildDiv.click();
  });
}, 'This test will pass if a form navigation successfully occurs when clicking a child element of a <button type=submit> element with a onclick event handler which prevents the default form submission and manually calls form.submit() instead.');
</script>