Run results for: window.addEventListener('scroll',CallbackScroll);

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
CallbackScroll	1358.4 Ops/sec
2	3130302.8 Ops/sec

HTML Preparation code:

<div id="testElement"></div>

Tests:

CallbackScroll
window.addEventListener('scroll',function (){});
2
var el = document.getElementById('testElement'); var className = el.className;