<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Unique Identifier</title>
<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#attributes-common-to-html-and-mathml-elements">
<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#dom-and-javascript">
<meta name="assert" content="Verify whether the getElementById() works for MathML elements.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  setup({ explicit_done: true });
  window.addEventListener("DOMContentLoaded", function() {
    var mtext = document.getElementById("MTEXT");
    test(function() {
      assert_equals(mtext, document.body.lastElementChild.lastElementChild);
    }, "getElementById()");
    done();
  });
</script>
</head>
<body>
  <div id="log"></div>
  <math>
    <mtext id="MTEXT_"></mtext>
    <mtext id="MTEX"></mtext>
    <mtext id="MTEXT"></mtext>
  </math>
</body>
</html>