React Final Form Html5 Validation screenshot

React Final Form Html5 Validation

Author Avatar Theme by Final form
Updated: 7 Jun 2025
56 Stars

A swap-in replacement for React Final Form's <Field> component to provide HTML5 Validation

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Overview

React Final Form HTML5 Validation is an intriguing solution for developers looking to enhance their forms with two-way HTML5 validation. This swappable replacement for the original Field component of React Final Form allows for seamless management of validation states. As applications become more interactive and form-heavy, having a reliable validation setup helps ensure that users provide correct information, enhancing overall user experience.

The advantage of this library lies in its ability to integrate both HTML5 validation constraints and React Final Form’s field-level errors. However, it’s essential to note that it is not designed for use alongside record-level validation. This thoughtful design choice creates a more streamlined functionality for users who specifically need this feature without bloating the core library for everyone.

Features

  • Two-Way HTML5 Binding: Automatically synchronizes HTML5 constraint validation errors with React Final Form state, ensuring real-time feedback for users.

  • Customizable Error Messages: Offers built-in English error messages, which can be easily overridden to fit the application’s localization and user experience needs.

  • Lightweight Wrapper: Serves as a thin wrapper over the official Field component, maintaining compatibility with ongoing improvements in the React Final Form library.

  • Selective Usage: Designed as a standalone package, allowing developers who don’t require HTML5 validation functionalities to keep their bundle size optimized.

  • Support for Various Rules: Supports multiple rules like required, min, maxLength, and others to provide comprehensive form validation.

  • Compatibility with Browsers: Works seamlessly across major web browsers like Safari, Chrome, and Firefox, ensuring a consistent experience for users regardless of their choice of browser.

  • API Clarity: Comes with clear documentation on rules and messages, enabling smooth integration and understanding for developers of all skill levels.