Run results for: alpha-numeric string

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:94.0) Gecko/20100101 Firefox/94.0

Browser: Firefox 94

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Regex	11488178.0 Ops/sec
charCodeAt	8204694.0 Ops/sec

HTML Preparation code:

var string = "isAlphaNumeric2021"

Script Preparation code:

var string = "isAlphaNumeric2021"

Tests:

Regex
/^[a-z0-9]+$/i.test(string)
charCodeAt
function isAlphaNumeric(str) { for (let i = 0; i < str.length; i++) { let code = str.charCodeAt(i) if (!(code > 47 && code < 58) && // numeric (0-9) !(code > 64 && code < 91) && // upper alpha (A-Z) !(code > 96 && code < 123)) { // lower alpha (a-z) return false } } return true } isAlphaNumeric(string)