Run results for: includes vs substring

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36

Browser: Chrome 145

Operating system: Windows

Device Platform: Desktop

Date tested: 6 months ago

Benchmark engine: Benchmark.js

startsWith

185.9M/s

substr

169.2M/s

View exact numbers

Test name	Executions per second
✓ startsWith	185,893,952 Ops/sec
substr	169,241,696 Ops/sec

Tests:

startsWith
const str = "https://firebase.com/this/is/a/long/thing" str.includes("https://firebase")
substr
const str = "https://firebase.com/this/is/a/long/thing" const subStr = str.substring(0, 16); str === subStr