Run results for: Test 1231241123

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 Edg/116.0.1938.69

Browser: Chrome 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
toLowerCase	9861126.0 Ops/sec
Locale	290476.2 Ops/sec
Collator	4267226.5 Ops/sec
Collator Accent	3579381.5 Ops/sec

Script Preparation code:

var a = "John Doe Is NOT A Really Long Name"
var b = "JOHN DOE IS not A REALLY LONG NAME"


function isEqualToIgnoreCase1(stringA, stringB) {
    if (stringA && stringB) {
        return stringA.toLowerCase() === stringB.toLowerCase()
    }

    return stringA === stringB;
}

var options = {
    sensitivity: 'accent'
};

function isEqualToIgnoreCase2(stringA, stringB) {
    return stringA.localeCompare(stringB, undefined, options) === 0;
}

var collatorBase = Intl.Collator(undefined, { sensitivity: 'base' });

function isEqualToIgnoreCase3(stringA, stringB) {
    return collatorBase.compare(stringA,stringB) === 0;
}

var collatorAccent = Intl.Collator(undefined, { sensitivity: 'accent' });

function isEqualToIgnoreCase4(stringA, stringB) {
    return collatorAccent.compare(stringA,stringB) === 0;
}

Tests:

toLowerCase
isEqualToIgnoreCase1(a,b)
Locale
isEqualToIgnoreCase2(a,b)
Collator
isEqualToIgnoreCase3(a,b)
Collator Accent
isEqualToIgnoreCase4(a,b)

Run results for: Test 1231241123

toLowerCase

Locale

Collator

Collator Accent