Run results for: OnlyLetterAndNumbers c# regex vs loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
RegEx	3805696.5 Ops/sec
Loop	589176.4 Ops/sec

HTML Preparation code:

var string = "ThisIsStringWithOnlyLettersAndNumbers_АТакЖе-И_БезПробеловИТочек";

Script Preparation code:

var string = "ThisIsStringWithOnlyLettersAndNumbers_АТакЖе-И_БезПробеловИТочек";

Tests:

RegEx
let isValidTag = false; const number = new RegExp("^[A-Za-zА-Яа-яЁё0-9_\-]+$"); isValidTag = number.test(string);
Loop
let isValidTag = true; let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцшщъыьэюя0123456789-_"; for (let i = 0; i < string.length; i++) { let chr = string.charAt(i); if (alphabet.indexOf(chr) == -1) { isPasswordValid = false; break; } }