react hook form

1import React from "react";
2import { useForm, Controller } from "react-hook-form";
3import Select from "react-select";
4import Input from "@material-ui/core/Input";
5import { Input as InputField } from "antd";
6
7export default function App() {
8  const { control, handleSubmit } = useForm();
9  const onSubmit = data => console.log(data);
10
11  return (
12    <form onSubmit={handleSubmit(onSubmit)}>
13      <Controller as={Input} name="HelloWorld" control={control} defaultValue="" />
14      <Controller as={InputField} name="AntdInput" control={control} defaultValue="" />
15      <Controller
16        as={Select}
17        name="reactSelect"
18        control={control}
19        onChange={([selected]) => {
20          // React Select return object instead of value for selection
21          return { value: selected };
22        }}
23        defaultValue={{}}
24      />
25
26      <input type="submit" />
27    </form>
28  );
29}
30

1import React from 'react';import { useForm } from 'react-hook-form'; function App() {  const { register, handleSubmit, errors } = useForm(); // initialise 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>  );}

1import React from 'react';
2import { useForm } from 'react-hook-form';
3
4function App() {
5  const { register, handleSubmit, errors } = useForm(); // initialize the hook
6  const onSubmit = (data) => {
7    console.log(data);
8  };
9
10  return (
11    <form onSubmit={handleSubmit(onSubmit)}>
12      <input name="firstname" ref={register} /> {/* register an input */}
13      <input name="lastname" ref={register({ required: true })} />
14      {errors.lastname && 'Last name is required.'}
15      <input name="age" ref={register({ pattern: /\d+/ })} />
16      {errors.age && 'Please enter number for age.'}
17      <input type="submit" />
18    </form>
19  );
20}

1<input {...register('test', { required: true })} />
2

1import React from 'react';
2import { useForm } from 'react-hook-form';
3import "./App.css";
4
5type Profile = {
6  firstname: string
7  lastname: string
8  age: number
9}
10
11function App() {
12  const {register, handleSubmit, errors} = useForm<Profile>()
13
14  const onSubmit = handleSubmit((data) => {
15    alert(JSON.stringify(data))
16  })
17
18  return (
19    <main>
20    <form onSubmit={onSubmit}>
21      <div>
22        <label htmlFor="firstname">First Name</label>
23        <input ref={register({ required: true })} id="firstname" name="firstname" type="text"/>
24        {
25          errors.firstname && <div className="error">Enter your name</div>
26        }
27      </div>
28      <div>
29        <label htmlFor="lastname">Last Name</label>
30        <input ref={register({ required: true })} id="lastname" name="lastname" type="text"/>
31        {
32          errors.lastname && <div className="error">Enter your last name</div>
33        }
34      </div>
35      <div>
36        <label htmlFor="age">Age</label>
37        <input ref={register({ required: true })} id="age" name="age" type="text"/>
38        {
39          errors.age && <div className="error">Enter your age</div>
40        }
41      </div>
42      <button type="submit">Save</button>
43    </form>
44    </main>
45  );
46}
47
48export default App;

1import React from 'react';
2import ReactDOM from 'react-dom';
3import { connect } from "react-redux";
4import useForm from 'react-hook-form';
5
6function SampleForm() {
7  const { register, handleSubmit } = useForm();
8  const onSubmit = data => {
9    alert(JSON.stringify(data));
10  };
11
12  return (
13    <div className="App">
14      <form onSubmit={handleSubmit(onSubmit)}>
15        <div>
16          <label htmlFor="firstName">First Name</label>
17          <input name="firstName" placeholder="bill" ref={register} />
18        </div>
19
20        <div>
21          <label htmlFor="lastName">Last Name</label>
22          <input name="lastName" placeholder="luo" ref={register} />
23        </div>
24
25        <div>
26          <label htmlFor="email">Email</label>
27          <input name="email" placeholder="bluebill1049@hotmail.com" type="email" ref={register} />
28        </div>
29        <button type="submit">Submit</button>
30      </form>
31    </div>
32  );
33}
34
35class Sample extends Component {
36  constructor(props) {
37    super(props);
38  }
39
40  render() {
41    return <SampleForm />;
42  }
43}
44
45export default connect()(Sample);
46
47const rootElement = document.getElementById('root');
48ReactDOM.render(<Sample />, rootElement);