event-global-replaceable.html

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This WPT test may be referenced by the following Test IDs:
- /dom/events/event-global-replaceable.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>window.event is [Replaceable]</title>

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

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

<script>

"use strict";

test(() => {

  window.event = "foo";

  assert_equals(window.event, "foo");

}, "Setting window.event replaces it");

test(() => {

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

  assert_equals(window.event, "foo", "Still set before dispatch");

  const clickEvent = new Event("click");

  let fired = false;

  target.addEventListener("click", () => {

    assert_equals(window.event, "foo", "Still set during dispatch");

    fired = true;

});

  target.dispatchEvent(clickEvent);

  assert_equals(window.event, "foo", "still set after dispatch");

  assert_true(fired);

}, "Dispatching does not affect window.event after it's been replaced");

</script>