Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.151 Safari/537.36
Chrome 88
Windows
Desktop
3 years ago
Test name Executions per second
querySelector 2459318.5 Ops/sec
getElementsByClassName 2297260.5 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test"></div>
Tests:
  • querySelector

     
    document.querySelector('.test').className;
  • getElementsByClassName

     
    document.getElementsByClassName('test')[0].className;