Run results for: querySelector vs getElementById

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:49.0) Gecko/20100101 Firefox/49.0

Browser: Firefox 49

Operating system: Windows 7

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
querySelector	4075584.2 Ops/sec
getElementById	20961268.0 Ops/sec

HTML Preparation code:

<html>
  <body>
    <div id="test2"></div>
    <div id="test"></div>
  </body>
</html>

AخA
 
<html>
  <body>
    <div id="test2"></div>
    <div id="test"></div>
  </body>
</html>

Tests:

querySelector
document.querySelector("#test");
document.querySelector("#test");
getElementById
document.getElementById("test");
document.getElementById("test");