<!DOCTYPE html>
<title>Unhandled user prompt dismisses and notifies</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<meta name="variant" content="?type=alert">
<meta name="variant" content="?type=confirm">
<meta name="variant" content="?type=prompt">
<meta name="variant" content="?type=alert&wait">
<meta name="variant" content="?type=confirm&wait">
<meta name="variant" content="?type=prompt&wait">
<script>
  let params = new URL(location).sea