<!DOCTYPE HTML>
<title>Button value of corresponding pointerup/pointerdown are equivalent</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="pointerevent_support.js"></script>

<input id="target" style="margin: 20px">

<script>
  'use strict';
  const target = document.getE