3. What Is React, and What Is It Commonly Used For

⚛️ React – Simplified Notes

What is React?

• A popular JavaScript library for building user interfaces (UI).

• Developed by Facebook.

• Known for efficiency, flexibility, and reusable components.

🔑Key Concepts

1. Reusable Components

   • UI pieces like buttons, cards, avatars, etc.

   • Can be nested to build complex interfaces.

   • Each component can update independently when data changes.

2. Virtual DOM

   • React uses a virtual DOM instead of directly manipulating the real DOM.

   • This improves performance and makes updates faster.

3. State Management

   • State = data that determines how a component looks and behaves.

   • React makes it easy to track and update state, keeping the UI in sync with data.

🤷‍♂️Why Learn React?

• Widely used in the industry.

• Great for building dynamic and interactive web apps.

• Focus of many JavaScript courses due to its popularity.