Run results for: Custom Event vs Callback 2

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:101.0) Gecko/101.0 Firefox/101.0

Browser: Firefox Mobile 101

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Custom Event	20.2 Ops/sec
Callback	6780.0 Ops/sec

Tests:

Custom Event
let i = 1001; const results = []; window.addEventListener('custom:test', (evt) => { results.push(`Custom Event ${evt.detail.idx}`); }); while (--i) { window.dispatchEvent(new CustomEvent('custom:test', { detail: { idx: i } })); }
Callback
const results = []; function cb(i) { results.push(`Callback ${i}`); } let i = 1001; while (--i) { cb(i); }