RegExp.prototype.test()
to check if the input string matches against the alphanumeric regexp pattern.const isAlphaNumeric = str => /^[a-z0-9]+$/gi.test(str);
isAlphaNumeric('hello123'); // true
isAlphaNumeric('123'); // true
isAlphaNumeric('hello 123'); // false (space character is not alphanumeric)
isAlphaNumeric('#$hello'); // false
Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️