Run results for: String toLowerCase vs. Regex test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
toLowerCase	87838030.0 Ops/sec
RegExp	4827245.0 Ops/sec

Tests:

toLowerCase
const strings = [ 'abcd', 'ABCD', 'Abcd', 'defg', 'defG', '1234', 'blah', 'nine', 'TEN', ]; strings.forEach((el) => { el.toLowerCase() === el; });
RegExp
const strings = [ 'abcd', 'ABCD', 'Abcd', 'defg', 'defG', '1234', 'blah', 'nine', 'TEN', ]; strings.forEach((el) => { /[A-Z]/.test(el); });