Run results for: Cost of adding and removing events

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Null

525.5M/s

Adding and removing event listeners

6.2M/s

View exact numbers

Test name	Executions per second
✓ Null	525,539,328 Ops/sec
Adding and removing event listeners	6,222,374 Ops/sec

HTML Preparation code:


<div id='element'></div>

Script Preparation code:

const element = document.getElementById('element');

Tests:

Adding and removing event listeners
const callback = () => { console.log('x') } element.addEventListener('click', callback); element.removeEventListener('click', callback);
Null
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