Software Developer
React-hook-form is a library that helps you validate forms in React. React-hook-form is a minimal library without any other dependencies. It is performant and straightforward to use, requiring developers to write fewer lines of code than other form libraries.
npm install react-hook-form
import React from 'react';
import { useForm } from 'react-hook-form';
function App() {
const { register, handleSubmit, errors } = useForm(); // initialize the hook
const onSubmit = (data) => {
console.log(data);
};
return (
<form onSubmit={handleSubmit(onSubmit)}>
<input name="firstname" ref={register} /> {/* register an input */}
<input name="lastname" ref={register({ required: true })} />
{errors.lastname && 'Last name is required.'}
<input name="age" ref={register({ pattern: /\d+/ })} />
{errors.age && 'Please enter number for age.'}
<input type="submit" />
</form>
);
}
React Final Form is a lightweight structure library written in center JavaScript that goes about as a covering around Final Form, a structure state the board library. Respond Final Form utilizes the onlooker configuration design in which the parts prefer explicit occasions.
npm install --save final-form react-final-form
or
yarn add final-form react-final-form
import { Form, Field } from 'react-final-form'
const MyForm = () => (
<Form
onSubmit={onSubmit}
validate={validate}
render={({ handleSubmit }) => (
<form onSubmit={handleSubmit}>
<h2>Simple Default Input</h2>
<div>
<label>First Name</label>
<Field name="firstName" component="input" placeholder="First Name" />
</div>
<h2>An Arbitrary Reusable Input Component</h2>
<div>
<label>Interests</label>
<Field name="interests" component={InterestPicker} />
</div>
<h2>Render Function</h2>
<Field
name="bio"
render={({ input, meta }) => (
<div>
<label>Bio</label>
<textarea {...input} />
{meta.touched && meta.error && <span>{meta.error}</span>}
</div>
)}
/>
<h2>Render Function as Children</h2>
<Field name="phone">
{({ input, meta }) => (
<div>
<label>Phone</label>
<input type="text" {...input} placeholder="Phone" />
{meta.touched && meta.error && <span>{meta.error}</span>}
</div>
)}
</Field>
<button type="submit">Submit</button>
</form>
)}
/>
)
Formic is a little gathering of React parts and snares for building structures in React and React Native. It assists with the three most irritating parts: Getting esteems all through structure state. Approval and blunder messages. Taking care of structure accommodation.
npm i formik
import React from 'react';
import { Formik, Field, Form, ErrorMessage } from 'formik';
import * as Yup from 'yup';
const SignupForm = () => {
return (
<Formik
initialValues={{ firstName: '', lastName: '', email: '' }}
validationSchema={Yup.object({
firstName: Yup.string()
.max(15, 'Must be 15 characters or less')
.required('Required'),
lastName: Yup.string()
.max(20, 'Must be 20 characters or less')
.required('Required'),
email: Yup.string().email('Invalid email address').required('Required'),
})}
onSubmit={(values, { setSubmitting }) => {
setTimeout(() => {
alert(JSON.stringify(values, null, 2));
setSubmitting(false);
}, 400);
}}
>
<Form>
<label htmlFor="firstName">First Name</label>
<Field name="firstName" type="text" />
<ErrorMessage name="firstName" />
<label htmlFor="lastName">Last Name</label>
<Field name="lastName" type="text" />
<ErrorMessage name="lastName" />
<label htmlFor="email">Email Address</label>
<Field name="email" type="email" />
<ErrorMessage name="email" />
<button type="submit">Submit</button>
</Form>
</Formik>
);
};
export default SigupForm