Run results for: string start with method startsWith Vs. indexOf Vs. String Array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36 Edg/134.0.0.0

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

startsWith

172/s

String Array

166/s

indexOf

158/s

View exact numbers

Script Preparation code:

window.testStr = 'mt-asjhbfdjasasdkbfas';
window.counter = 0;
window.testTimes = 1e5;

Tests:

startsWith
window.counter = 0; for (let index = 0; index < testTimes; index++) { if (testStr.startsWith('mt-')) { counter++; } }
indexOf
window.counter = 0; for (let index = 0; index < testTimes; index++) { if (testStr.indexOf('mt-') === 0) { counter++; } }
String Array
window.counter = 0; for (let index = 0; index < testTimes; index++) { if (testStr[0] === 'm' && testStr[1] === 't' && testStr[2] === '-') { counter++; } }