getElementsByClassName[0] vs querySelector

Benchmark created on

Preparation HTML

<ul>
  <li><a href="#" name="name" class="classname">item 1</a></li>
  <li><a href="#" name="name" class="classname">item 2</a></li>
  <li><a href="#" name="name" class="classname">item 3</a></li>
  <li><a href="#" name="name" class="classname">item 4</a></li>
  <li><a href="#" name="name" class="classname">item 5</a></li>
  <li><a href="#" name="name" class="classname">item 6</a></li>
  <li><a href="#" name="name" class="classname">item 7</a></li>
  <li><a href="#" name="name" class="classname">item 8</a></li>
  <li><a href="#" name="name" class="classname">item 9</a></li>
  <li><a href="#" name="name" class="classname">item 10</a></li>
</ul>
<script>
  var nodes;
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
getElementsByClassName()[0]
nodes = document.getElementsByClassName('classname')[0];
ready
querySelector()
nodes = document.querySelector('.classname');
ready

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