Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Windows
Desktop
one year ago
Test name Executions per second
getElementById 195328.4 Ops/sec
getElementsByClassName 235255.2 Ops/sec
querySelector 235501.8 Ops/sec
HTML Preparation code:
AخA
 
1
<div id="a" class="b"></div>
Tests:
  • getElementById

     
    document.getElementById('a');
    a.innerHTML="abc";
  • getElementsByClassName

     
    let b = document.getElementsByClassName('b')[0];
    b.innerHTML="def";
  • querySelector

     
    let c =document.querySelector(".b");
    c.innerHTML="ghi";