Run results for: querySelector vs getElementsByTagName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

getElementsByTagName

28.3M/s

querySelector

11.5M/s

View exact numbers

Test name	Executions per second
✓ getElementsByTagName	28,310,722 Ops/sec
querySelector	11,515,023 Ops/sec

HTML Preparation code:

<div></div>

Tests: