elinks/test/ecmascript/assert/element.matches.html

<ul id="birds">
  <li>Orange-winged parrot</li>
  <li class="endangered">Philippine eagle</li>
  <li>Great white pelican</li>
</ul>

<script type="text/javascript">

console.error('element.matches');

  var birds = document.getElementsByTagName('li');

  for (var i = 0; i < birds.length; i++) {
    if (birds[i].matches('.endangered')) {
      console.assert(birds[i].textContent === 'Philippine eagle', 'endangered');
    }
  }

console.exit(0);

</script>