[Intro]

[Background Music: Friendly and engaging tone]

Instructor:

"Hey there, and welcome back! In our previous lessons, we explored how React handles events and how Synthetic Events work behind the scenes. Now, let’s focus on an essential topic when working with forms in React—Controlled vs. Uncontrolled Components.

By the end of this lesson, you’ll understand:

• What controlled components are and why they are recommended in React.
• How to handle form inputs using state.
• A brief introduction to uncontrolled components and when to use useRef.

Let’s get started!"

1. Understanding Controlled Components

Instructor:

"In React, form elements like <input>, <textarea>, and <select> can be managed in two ways:

1. Controlled Components (React controls the input value).
2. Uncontrolled Components (The DOM controls the input value).

A Controlled Component is a form element whose value is controlled by React state instead of the DOM."

Real-Life Analogy:

"Think of controlled components like a smart thermostat:

• You set the desired temperature, and it automatically adjusts.