Benchmark: OnlyLetterAndNumbers c# regex vs loop

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; } }

Rendered benchmark preparation results:

Previous results

Test case name	Result
RegEx
Loop

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Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Mac OS X 10.15.7

Test name	Executions per second
RegEx	2077214.0 Ops/sec
Loop	97760.9 Ops/sec

OnlyLetterAndNumbers c# regex vs loop (version: 0)