Validating an HTML form is NOT a simple task as you develop a modern web app.
But it is NOT enough.
For better user experience, custom styles, error messages and validation rules must be taken into account.
Originally Published Jan 27 2018, updated Feb 23 2019
10 Best jQuery Form Validation Plugins:
A lightweight and simple to use Bootstrap 4 validator that validates commonly used form field and display custom validation errors in an HTML form. Works with native HTML5 form attributes.
validity.js is a small jQuery HTML5 form validation plugin used to validate the values of any form fields using the HTML validity property.
DjValidator is a simple, flexible, powerful jQuery based HTML5 form validator that comes with 20+ built-in validation rules and is easy to extend using your own validations.
A lightweight (3kb) jQuery form validation plugin used for validating your form fields on keyup and/or submit.
A jQuery plugin used to validate Brazilian CPF (Cadastro de Pessoas Físicas, Natural Persons Register) and/or CNPJ (Cadastro Nacional da Pessoa Jurídica, National Registry of Legal Entities) numbers with easy.
ValidMYCard is a Credit Card Generator & Validator built with jQuery that generates random credit card numbers and checks you type the right numbers (card type, length, luhn).
A jQuery plugin for the Material Components Web that applies form validation, floating label and input mask functionalities to form fields.
Checkify is a jQuery based form validator that provides realtime, client-side, mobile-friendly validation functionalities on form fields.
The Reform.js jQuery plugin provides an easy way to create and handle forms with a modern approach in mind.