Run results for: Javascript: Case insensitive string comparison performance

Run details:

User agent: Mozilla/5.0 (Linux; U; Android 11; zh-cn; Redmi K20 Pro Build/RKQ1.200826.002) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.116 Mobile Safari/537.36 XiaoMi/MiuiBrowser/15.9.18 swan-mibrowser

Browser: Chrome Mobile 89

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
toLowerCase()	4591640.0 Ops/sec
localeCompare()	83550.8 Ops/sec
toLowerCase() FAIL	4170780.0 Ops/sec
localeCompare() FAIL	83463.5 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)

Run results for: Javascript: Case insensitive string comparison performance

toLowerCase()

localeCompare()

toLowerCase() FAIL

localeCompare() FAIL