Native HTML Form Validation Enhancer with Zod Support – validation-enhancer
A web component that upgrades native HTML5 form validation with inline errors, CSS state classes, ARIA support, and optional Zod schema integration.
JavaScript & CSS form validation
Vanilla JavaScript Form Validation with Custom Rules and Messages – js-validation
Validate HTML forms on the client side with js-validation, a dependency-free JavaScript library with rules, custom messages, and submit callbacks.
Zero-Dependency JavaScript/TypeScript Validation Library – @incogdev/validate
Validate form values, object payloads, nested data, and async rules with @incogdev/validate in JavaScript or TypeScript.
Lightweight Form Validation and Input Masking/Formatting – Masker.js
Add client-side input masks and validation with Masker.js. Includes date range comparison, character counters, and international phone number formats.
Client-Side Declarative Form Validation using Strictly.js
Add powerful, customizable form validation with Strictly.js. Define rules like required, regex, length, and more directly in your HTML markup.
Fast Clientside Form Validation with Zephyr Form Validator
A lightweight, dependency-free JS library for client-side form validation with custom rules and flexible styling.
Enhance Password Fields with Custom Web Components
Improve your site’s password fields. Implement easy-to-use components for rule checking and visibility toggling.
Validating and Formatting Credit Card Inputs with Payment.js
Payment.js is a standalone Javascript library for E-commerce or business websites that helps you validate and format credit card form elements.
Precise Checkbox Validation With Required Checkboxes Web Component
Take control of your form’s checkbox requirements! This component makes it easy to specify exactly how many boxes users must check.
Beginner-Friendly JavaScript Form Validation Library – Trivule
A beginner-friendly JavaScript library that makes form validation a breeze. Add validation rules with custom HTML attributes, no complex code required.