Run results for: RegEx vs For Loop

Run details:

User agent: Mozilla/5.0 (iPad; CPU OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/136.0.7103.91 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 136

Operating system: iOS 18.3.2

Device Platform: Tablet

Date tested: one year ago

For Loop

38.5M/s

RegEx

9.7M/s

View exact numbers

Test name	Executions per second
✓ For Loop	38,479,660 Ops/sec
RegEx	9,734,656 Ops/sec

HTML Preparation code:

var string = "passw)odas4gsdfsdf";

Script Preparation code:

var string = "passw)odas4gsdfsdf";

Tests:

RegEx
let isPasswordValid = false; const number = new RegExp('(?=.*[0-9])'); isPasswordValid = number.test(string);
For Loop
let isPasswordValid = false; for (let i = 0; i < string.length; i++) { let code = string.charCodeAt(i); if (code >= 48 && code <= 57) { isPasswordValid = true; break; } }