The native HTML5 validation feature is not enough.
We also recommend you to use a JavaScript library to extend and enhance the default form validation functionalities for better user experiences on modern web design.
In this post, you’ll find a list of 7 best and most downloaded JavaScript Form Validation libraries (without any 3rd dependencies such as jQuery) to validate your HTML form with custom error messages, CSS styles, validation rules and more. Enjoy.
7. popup-validation
Loaderplate is a simple, lightweight javascript library that uses SVG icons to generate an animated loading spinner on a given container.
6. okjs
okjs is a JavaScript library used to extend the HTML5 form validation api that supports custom field validation rules & error messages. Without any 3rd dependencies.
5. Just-validate
Just-validate is a dependency-free, HTML5 data attribute based form validation that supports both client side and server side form validation. Validation rules are fully customizable via JavaScript. Compatible with Bootstrap framework.
4. FormValidation
FormValidation is a very lightweight JavaScript library that provides basic client side form validation with custom error messages on submit.
3. dakrajs
dakrajs is a pure JavaScript library used for validating form fields with custom error messages on submit. Supports for required fields, email addresses, phone numbers, passwords and much more. Very simple and easy to implement.
2. JSFormValidation
A simple and fast JavaScript library that provides client side validation with custom error messages and validation rules for html forms.
1. Simple Inline Form Validator
An easy-to-use form validator which enables you to validate a set of form controls in vanilla JS.