dom/html/test/test_bug388746.html
author Gabriel Luong <gabriel.luong@gmail.com>
Sun, 13 Jul 2025 02:28:40 +0000 (7 hours ago)
changeset 796385 23185ed855a5b168943bde8ebe8ec946cd83f675
parent 752222 6abb3f757d4066bf3d027c58679e8c27b7687cd2
permissions -rw-r--r--
Bug 1972159 - Part 25: Enable Compose Homepage by default and remove associated settings and Nimbus flags r=android-reviewers,devota Differential Revision: https://phabricator.services.mozilla.com/D254598
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=388746
-->
<head>
  <title>Test for Bug 388746</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=388746">Mozilla Bug 388746</a>
<p id="display"></p>
<div id="content">
  <input>
  <textarea></textarea>
  <select>
    <option>option1</option>
    <optgroup label="optgroup">
    <option>option2</option>
    </optgroup>
  </select>
  <button>Button</button>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">

/** Test for Bug 388746 **/

var previousEventTarget = "";

function handler(evt) {
  if (evt.eventPhase == 2) {
    previousEventTarget = evt.target.localName.toLowerCase();
  }
}

function testElementType(type) {
  var el = document.getElementsByTagName(type)[0];
  el.addEventListener("DOMAttrModified", handler, true);
  el.setAttribute("foo", "bar");
  ok(previousEventTarget == type,
     type + " element should have got DOMAttrModified event.");
}

function test() {
  testElementType("input");
  testElementType("textarea");
  testElementType("select");
  testElementType("option");
  testElementType("optgroup");
  testElementType("button");
  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(() => SpecialPowers.pushPrefEnv({"set": [["dom.mutation_events.enabled", true]]}, test));
</script>
</pre>
</body>
</html>