Run results for: My Comparison - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36

Browser: Chrome 81

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelector	2002565.0 Ops/sec
getElementById	3452721.0 Ops/sec
querySelectorAll	922740.4 Ops/sec
getElementsByClassName	2554076.0 Ops/sec

Website performance monitoring

HTML Preparation code:

<div id="column-3" class="column-3"></div>

Tests:

querySelector
document.querySelector('#column-3');
getElementById
document.getElementById('column-3')
querySelectorAll
document.querySelectorAll('column-3')[0]
getElementsByClassName
document.getElementsByClassName('column-3')[0]