Easy Fast Form Validation Library – Wellidate
Wellidate is a fast, easy-to-use JavaScript form validation library that supports both native HTML5 validation attribute and HTML data attribute.
JavaScript & CSS form validation
Elegant Pure JavaScript Form Validator – Vanilla Validator
A vanilla JavaScript form validator to validate your form controls and display error messages next to invalid fields.
Concise Form Validator In Vanilla JavaScript – formvalidatorjs
formvalidatorjs is a lightweight, unobtrusive form validator written in vanilla JavaScript that works with the native HTML5 data validation.
Extend HTML5 Form Validation With Custom Rules And Errors – Bouncer.js
The Bouncer.js JavaScript library is created to extend the native HTML5 form validation that enables the customizable form validation on the form fields.
Validate Form Fields Using Regex And Required Attribute – Coriander
Coriander is a dead simple form validator used for validating form fields using Regex and required attribute.
Customizable Form Validator With Native JavaScript – js-form-validator.js
An easy-to-use yet fully customizable form field validator built using native JavaScript with no 3rd JavaScript libraries.
Minimal Form Validation Popup In Pure JavaScript – popup-validation
A lightweight, ES5/ES6 JavaScript library to validate form fields and display error messages in a popup when invalid.
Minimal HTML5 Form Validation Library – okjs
okjs is a JavaScript library used to extend the HTML5 form validation api that supports custom field validation rules & error messages.
Payment (Credit Card) Form Generator With Input Validation – payform
payform is a JavaScript plugin to build and validate a credit card form on your eCommerce website.
Custom HTML5 Form Validation Library – Ok.js
Ok.js is a lightweight JavaScript form validation library that makes it easy to create custom validation rules and error messages to form fields.