Minimal Credit Card Input Validation Library – creditCardValidator.js
A minimal, vanilla JavaScript credit card validator that has the ability to check & validate the credit card number, expiration Date and CVV.
JavaScript & CSS form validation
Basic Form Validation JavaScript Library – dakrajs
dakrajs is a pure JavaScript library used for validating form fields with custom error messages on submit.
Simple Custom Form Validation JavaScript Library – JSFormValidation
A simple and fast JavaScript library that provides client side validation with custom error messages and validation rules for html forms.
Minimal Form Validation Library – FormValidation
FormValidation is a very lightweight JavaScript library that provides basic client side form validation with custom error messages on submit.
Simple Inline Form Validator with Pure Javascript
An easy-to-use form validator which enables you to validate a set of form controls in vanilla JS.