Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; Pixel 3a XL) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.149 Mobile Safari/537.36 OPR/81.3.4292.78688

Browser: Opera Mobile 81

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

callback

37.6M/s

async

1.2M/s

View exact numbers

Test name	Executions per second
✓ callback	37,610,944 Ops/sec
async	1,214,142 Ops/sec

Tests:

async
(async() => { await true; })();
callback
((next) => {next()})(() => {});