Run results for: javascript startsWith() vs includes()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36

Browser: Chrome 94

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
startsWith	49013360.0 Ops/sec
includes	28703736.0 Ops/sec

Tests:

startsWith
const str = "utm_source" str.startsWith("utm_")
AخA

const str = "utm_source"
str.startsWith("utm_")
includes
const str = "utm_source" str.includes("utm_")
const str = "utm_source"
str.includes("utm_")