Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.73 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

callback

106.1M/s

async

13.2M/s

View exact numbers

Test name	Executions per second
✓ callback	106,103,624 Ops/sec
async	13,228,720 Ops/sec

Tests:

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