Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.5.1

Device Platform: Mobile

Date tested: 2 years ago

callback

28.0M/s

async

2.4M/s

View exact numbers

Test name	Executions per second
✓ callback	27,955,248 Ops/sec
async	2,433,605 Ops/sec

Tests: