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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0

Browser: Firefox 113

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
toLowerCase()	880577900.0 Ops/sec
Regex	6992747.0 Ops/sec
toLowerCase() FAIL	1006294000.0 Ops/sec
Regex FAIL	6632201.0 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)