Run results for: .startsWith() vs. RegExp for short strings and short prefixes

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0

Browser: Chrome 143

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

.startsWith()

16K/s

RegExp

6K/s

View exact numbers

Test name	Executions per second
✓ .startsWith()	16,465 Ops/sec
RegExp	6,021 Ops/sec

Script Preparation code:

const regexp = new RegExp(/^\-\-/);
const prefix = "--";
const str = "--some-var";
const numTests = 10000;

Tests: