Run results for: startsWith vs charCodeAt

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.5.1

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

charCodeAt

20.8M/s

startsWith

18.4M/s

View exact numbers

Test name	Executions per second
✓ charCodeAt	20,821,412 Ops/sec
startsWith	18,354,894 Ops/sec

Script Preparation code:

str = "hello world"

Tests: