React Hook Form v7

React Hook Form is a popular library for managing forms in React. With the release of version 7, React Hook Form has become even more powerful and easier to use. In this article, we’ll take a look at some of the key features and improvements of React Hook Form v7.

Faster and Smaller

One of the most significant improvements in React Hook Form v7 is its performance. The library has been rewritten to be faster and smaller, which means that it can handle large forms more efficiently. The new version also has a smaller bundle size, which makes it easier to include in your projects without increasing the overall size of your application.

Improved TypeScript Support

React Hook Form v7 has improved support for TypeScript, which makes it easier to write type-safe code. The library now includes a number of TypeScript interfaces and types, which help you to ensure that your form data is correctly typed. This can save you a lot of time and effort when it comes to debugging and maintaining your code.

New Validation System

Another key improvement in React Hook Form v7 is the new validation system. The library now supports multiple validation rules, which can be defined using either JavaScript functions or regular expressions. This makes it easier to define complex validation logic, such as ensuring that a password contains both letters and numbers.

Controlled Components

React Hook Form v7 now supports controlled components, which allows you to use it with existing form libraries and components. This means that you can use the library to manage the state of your form, while still using your own custom input components.

npm install react-hook-form

Quick Start

import { useForm } from "react-hook-form";
function App() {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm();

  return (
    <form onSubmit={handleSubmit((data) => console.log(data))}>
      <input {...register("firstName")} />
      <input {...register("lastName", { required: true })} />
      {errors.lastName && <p>Last name is required.</p>}
      <input {...register("age", { pattern: /\d+/ })} />
      {errors.age && <p>Please enter number for age.</p>}
      <input type="submit" />
    </form>
  );
}

Improved DevTools Support

React Hook Form v7 has improved support for React DevTools, which makes it easier to debug and inspect your forms. The library now includes a number of custom DevTools panels, which allow you to see the state of your form and its components in real-time.

Conclusion

React Hook Form v7 is a major upgrade to an already excellent library. With its improved performance, TypeScript support, and validation system, it’s a great choice for managing forms in React. Whether you’re building a small contact form or a complex multi-step wizard, React Hook Form v7 has the features and flexibility you need to get the job done.