Run details:
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36
Chrome 95
Windows
Desktop
3 years ago
Test name Executions per second
querySelector 4218325.0 Ops/sec
querySelectorAll 2184934.0 Ops/sec
getElementsByClassName 5183410.5 Ops/sec
querySelector (ID) 2953076.8 Ops/sec
getElementsByID 5738516.5 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test" id="test"></div>
Tests:
  • querySelector

     
    document.querySelector(".test")
  • querySelectorAll

     
    document.querySelectorAll(".test")
  • getElementsByClassName

     
    document.getElementsByClassName(".test")
  • querySelector (ID)

     
    document.querySelector("#test")
  • getElementsByID

     
    document.getElementById("test")