Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36
Chrome 83
Windows
Desktop
4 years ago
Test name Executions per second
getElementById 3025370.2 Ops/sec
getElementsByClassName 2229492.5 Ops/sec
HTML Preparation code:
AخA
 
1
<div id="footer-info" class="clearfix test"></div>
Tests:
  • getElementById

     
    var el = document.getElementById('footer-info');
  • getElementsByClassName

     
    var el = document.getElementsByClassName('test');