Unicode character utility functions and constants like isSymbol, isSpace, isLetter, isUpper.

Utf8 character utilities like isDigit, isUpper, toLower, isSymbol, isSpace, isPunc, simpleFold, etc.

Unicode character information library.

Common utility functions for ilib. iLib is a cross-engine library of internationalization (i18n) classes written in pure JS

convert the case of a string

python like function for javascript

A package for manipulate string for verifications

Checks whether the input is a string containing only uppercase characters

Get the ASCII value of alphanumeric characters

// examples

A node module for input validation

NestJS Library for Data Transfer Object

Entitizer util module

API-Validator is a library designed for validating input/output of API methods, with a very powerful but compact syntax.

Utilities and functions for Upsided

this is a module that you can use to manipulate strings ...

A simple library for working with characters and Unicode in JavaScript.

A single-ascii-character utility

"C++ Ctype.h functions"

Is it upper or lower case? and more.