Run results for: localeCompare vs charCodeAt

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0

Browser: Firefox 134

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

compare

14.1M/s

localeCompare

3.8M/s

View exact numbers

Test name	Executions per second
✓ compare	14,080,657 Ops/sec
localeCompare	3,767,258 Ops/sec

Script Preparation code:

function localeCompare(a, b) {
    return a.localeCompare(b);
}

function compare(a, b) {
    const aLength = a.length;
    const bLength = b.length;
    for (let i = 0; i < bLength; ++i) {
        let code = a.charCodeAt(i);
        if (isNaN(code)) {
            // b startsWith a
            return -1;
        }
        code -= b.charCodeAt(i);
        if (code)
            return code;
    }
    // a startsWith b
    return aLength > bLength ? 1 : 0;
}

Tests:

localeCompare
localeCompare("radiogQe8_7yhdY4Cl1QQSAsEJocXvTjlCzDN", "radioradioAu5NNprfgPH94MDcxL-rElEcHDvmG");
compare
compare("radiogQe8_7yhdY4Cl1QQSAsEJocXvTjlCzDN", "radioradioAu5NNprfgPH94MDcxL-rElEcHDvmG");