Run results for: Javascript: Case insensitive string comparison performance2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Windows

Device Platform: Desktop

Date tested: 28 days ago

Test name	Executions per second
toLowerCase()	996464448.0 Ops/sec
localeCompare()	244402.7 Ops/sec
toLowerCase() FAIL	1029613056.0 Ops/sec
localeCompare() FAIL	256336.1 Ops/sec
compare Already lower	1036172288.0 Ops/sec
just compare	1008691200.0 Ops/sec

Script Preparation code:

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

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)
compare Already lower
a.toLowerCase() === d.toLowerCase()
just compare
a === b