Run results for: Javascript: Case insensitive string comparison performance 2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; x64; rv:100.0) Gecko/20010101 Firefox/100.0

Browser: Firefox 100

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
toLowerCase()	1575147136.0 Ops/sec
localeCompare()	437908.1 Ops/sec
toLowerCase() FAIL	1578555904.0 Ops/sec
localeCompare() FAIL	450829.6 Ops/sec
toLocaleLowerCase()	8714893.0 Ops/sec
toLocaleLowerCase() FAIL	8886740.0 Ops/sec

Script Preparation code:

var a = "John Doe"
var b = "john doe"
var c = "john smith"
var o = {
    sensitivity: 'base'
}

Tests:

toLowerCase()
a.toLowerCase() === b.toLowerCase()
localeCompare()
a.localeCompare(b,undefined,o)
toLowerCase() FAIL
c.toLowerCase() === b.toLowerCase()
localeCompare() FAIL
c.localeCompare(b,undefined,o)
toLocaleLowerCase()
a.toLocaleLowerCase() === b.toLocaleLowerCase()
toLocaleLowerCase() FAIL
c.toLocaleLowerCase() === b.toLocaleLowerCase()