Run results for: Javascript: Case insensitive string comparison - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Browser: Chrome 103

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
toLowerCase()	5272726.0 Ops/sec
Regex	1923661.0 Ops/sec
toLowerCase() FAIL	5523971.0 Ops/sec
Regex FAIL	2071832.0 Ops/sec

Website performance monitoring

Script Preparation code:

var a = "soFt"
var b = "Software Development"
var c = "doFt"

Tests:

toLowerCase()
a.toLowerCase() === b.toLowerCase()
Regex
const re = new RegExp(a, "gi") re.test(b)
toLowerCase() FAIL
c.toLowerCase() === b.toLowerCase()
Regex FAIL
const re = new RegExp(c, "gi") re.test(b)