Run results for: querySelector vs getElementsByTagName

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0

Browser: Firefox 137

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

getElementsByTagName

14.7M/s

querySelector

8.3M/s

View exact numbers

Test name	Executions per second
✓ getElementsByTagName	14,656,569 Ops/sec
querySelector	8,294,274 Ops/sec

HTML Preparation code:

<div></div>

Tests: