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/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
toLowerCase()	8434774.0 Ops/sec
Regex	3021656.0 Ops/sec
toLowerCase() FAIL	8522231.0 Ops/sec
Regex FAIL	3767693.0 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)