useForm react code example

Example 1: react-hook-form material-ui

import React from "react";
import { useForm, Controller } from "react-hook-form";
import Select from "react-select";
import Input from "@material-ui/core/Input";
import { Input as InputField } from "antd";

export default function App() {
  const { control, handleSubmit } = useForm();
  const onSubmit = data => console.log(data);

  return (
    <form onSubmit={handleSubmit(onSubmit)}>
      <Controller as={Input} name="HelloWorld" control={control} defaultValue="" />
      <Controller as={InputField} name="AntdInput" control={control} defaultValue="" />
      <Controller
        as={Select}
        name="reactSelect"
        control={control}
        onChange={([selected]) => {
          // React Select return object instead of value for selection
          return { value: selected };
        }}
        defaultValue={{}}
      />

      <input type="submit" />
    </form>
  );
}

Example 2: form in react

import React, { useState } from "react";
import "./styles.css";
function Form() {
  const [firstName, setFirstName] = useState("");
  const [lastName, setLastName] = useState("");
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  return (
    <form>
      <input
        value={firstName}
        onChange={e => setFirstName(e.target.value)}
        placeholder="First name"
        type="text"
        name="firstName"
        required
      />
      <input
        value={lastName}
        onChange={e => setLastName(e.target.value)}
        placeholder="Last name"
        type="text"
        name="lastName"
        required
      />
      <input
        value={email}
        onChange={e => setEmail(e.target.value)}
        placeholder="Email address"
        type="email"
        name="email"
        required
      />
      <input
        value={password}
        onChange={e => setPassword(e.target.value)}
        placeholder="Password"
        type="password"
        name="password"
        required
      />
      <button type="submit">Submit</button>
    </form>
  );
}
export default Form;

Example 3: react hook form rating material ui

import React, { useState } from "react";
import Checkbox from "@material-ui/core/Checkbox";
import Button from "@material-ui/core/Button";
import TextField from "@material-ui/core/TextField";
import FormControlLabel from "@material-ui/core/FormControlLabel";
import Typography from "@material-ui/core/Typography";
import { makeStyles } from "@material-ui/core/styles";
import Container from "@material-ui/core/Container";
import { useForm } from "react-hook-form";
import Rating from "@material-ui/lab/Rating";
import StarBorderIcon from '@material-ui/icons/StarBorder';

const useStyles = makeStyles((theme) => ({
  paper: {
    marginTop: theme.spacing(8),
    display: "flex",
    flexDirection: "column",
    alignItems: "center"
  },
  form: {
    width: "100%", // Fix IE 11 issue.
    marginTop: theme.spacing(1)
  },
  submit: {
    margin: theme.spacing(3, 0, 2)
  }
}));

export default function Create() {
  const classes = useStyles();
  const [rating, setRating] = useState(2);
  const { register, handleSubmit } = useForm();
  const onSubmit = (data) => {
    console.log(data);
  };

  return (
    <Container component="main" maxWidth="xs">
      <div className={classes.paper}>
        <Typography component="h1" variant="h5">
          Form
        </Typography>
        <form
          className={classes.form}
          noValidate
          onSubmit={handleSubmit(onSubmit)}
        >
          <TextField
            variant="outlined"
            margin="normal"
            fullWidth
            id="title"
            label="Title"
            name="title"
            autoFocus
            inputRef={register()}
          />
          <FormControlLabel
            control={
              <Checkbox
                inputRef={register}
                name="remember"
                defaultValue={false}
              />
            }
            label="remember"
          />
          <br />
          <FormControlLabel
            control={
              <>
                <input
                  name="rating"
                  type="number"
                  value={rating}
                  ref={register}
                  hidden
                  readOnly
                />
                <Rating
                  name="rating"
                  value={rating}
                  precision={0.5}
                  onChange={(_, value) => {
                    setRating(value);
                  }}
                  icon={<StarBorderIcon fontSize="inherit" />}
                />
              </>
            }
            label="select rating"
          />
          <Button
            type="submit"
            fullWidth
            variant="contained"
            color="primary"
            className={classes.submit}
          >
            Submit
          </Button>
        </form>
      </div>
    </Container>
  );
}

Example 4: react hooks 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>
  );
}

Example 5: React Hook Form

import React from 'react';
import ReactDOM from 'react-dom';
import { connect } from "react-redux";
import useForm from 'react-hook-form';

function SampleForm() {
  const { register, handleSubmit } = useForm();
  const onSubmit = data => {
    alert(JSON.stringify(data));
  };

  return (
    <div className="App">
      <form onSubmit={handleSubmit(onSubmit)}>
        <div>
          <label htmlFor="firstName">First Name</label>
          <input name="firstName" placeholder="bill" ref={register} />
        </div>

        <div>
          <label htmlFor="lastName">Last Name</label>
          <input name="lastName" placeholder="luo" ref={register} />
        </div>

        <div>
          <label htmlFor="email">Email</label>
          <input name="email" placeholder="[email protected]" type="email" ref={register} />
        </div>
        <button type="submit">Submit</button>
      </form>
    </div>
  );
}

class Sample extends Component {
  constructor(props) {
    super(props);
  }

  render() {
    return <SampleForm />;
  }
}

export default connect()(Sample);

const rootElement = document.getElementById('root');
ReactDOM.render(<Sample />, rootElement);

Example 6: react hook form

react hook form