• Introduction In this section, we’ll learn about Using Forms in React. We’ll focus on understanding how to create and manage forms in React using controlled components. Let’s jump into a conversation between Geek and Gal to explore the process of using forms in a React application!
Gal Normal

In React, forms are created using controlled components. This makes it easier to manage the data and validation of the form.

Geek Curious

How do we create a form in React?

Gal Happy

Great question! First, you create a form element with input fields and a submit button. Then, you add event handlers to manage the state of the input fields and form submission.

  • Creating a Form
Gal Pleased

Let's create a simple form with a text input field and a submit button. We'll also add a state variable to manage the input value and an event handler to update the state.

Geek Curious

Sounds good! Show me the code!

Gal Happy

Here's the code for a simple form in React:

import React, { useState } from 'react';

function SimpleForm() {
  const [inputValue, setInputValue] = useState('');

  function handleChange(event) {
    setInputValue(event.target.value);
  }

  function handleSubmit(event) {
    event.preventDefault();
    alert('You entered: ' + inputValue);
  }

  return (
    <form onSubmit={handleSubmit}>
      <label>
        Enter something:
        <input type="text" value={inputValue} onChange={handleChange} />
      </label>
      <button type="submit">Submit</button>
    </form>
  );
}
Geek Happy

I see! We have a form element with an input field, a state variable to manage the input value, and event handlers to update the state and handle form submission.

Gal Happy

Exactly! React manages the input field's value and updates it as the user types.

  • Hilarious Example
Geek Curious

How about a funny example of using forms in React?

Gal Pleased

Sure thing! Let's create a form where you can submit your favorite animal sound!

import React, { useState } from 'react';

function AnimalSoundForm() {
  const [sound, setSound] = useState('');

  function handleChange(event) {
    setSound(event.target.value);
  }

  function handleSubmit(event) {
    event.preventDefault();
    alert('Your favorite animal sound is: ' + sound + '! 🐶🐱🦁');
  }

  return (
    <form onSubmit={handleSubmit}>
      <label>
        Favorite Animal Sound:
        <input type="text" value={sound} onChange={handleChange} />
      </label>
      <button type="submit">Submit</button>
    </form>
  );
}
Geek Happy

Haha, that's awesome! A form to submit your favorite animal sound in React!

Gal Happy

You got it! Using forms in React with controlled components makes managing form data a lot easier and more fun!

  • Conclusion Using Forms in React allows you to create and manage forms efficiently by leveraging controlled components. With controlled components, you can manage the state of form elements and keep your code clean and maintainable. Remember, React makes it simple and enjoyable to work with forms! 🎉