blur-event.window.js

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/insertion-removing-steps/blur-event.window.html - WPT Dashboard Interop Dashboard

test(() => {

  const input = document.body.appendChild(document.createElement('input'));

  input.focus();

  let blurCalled = false;

  input.onblur = e => blurCalled = true;

  input.remove();

  assert_false(blurCalled, "Blur event was not fired");

}, "<input> element does not fire blur event upon DOM removal");

test(() => {

  const button = document.body.appendChild(document.createElement('button'));

  button.focus();

  let blur_called = false;

  let focus_out_called = false;

  let focus_called = false;

  button.onblur = () => { blur_called = true; }

  button.onfocusout = () => { focus_out_called = true; }

  document.body.addEventListener("focus",

    () => { focus_called = true; }, {capture: true});

  button.remove();

  assert_false(blur_called, "Blur event was not fired");

  assert_false(focus_out_called, "FocusOut event was not fired");

  assert_false(focus_called, "Focus was not fired");

}, "<button> element does not fire blur/focusout events upon DOM removal");