Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/119.0.6045.169 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 119

Operating system: iOS 17.2

Device Platform: Mobile

Date tested: 2 years ago

callback

86.6M/s

async

10.9M/s

View exact numbers

Test name	Executions per second
✓ callback	86,552,864 Ops/sec
async	10,854,712 Ops/sec

Tests:

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