querySelectorAll vs. getElementsByClassName

one year ago
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
Test name Executions per second
querySelectorAll 1046469.2 Ops/sec
getElementsByClassName 2829884.2 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test"></div>
Tests:
  • querySelectorAll

     
    document.querySelectorAll(".test")
  • getElementsByClassName

     
    document.getElementsByClassName(".test")
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