DAY 1: REACT CLASS

1. What is React (JS React)?

• React is a JavaScript library used for building user interfaces (UI), especially Single Page Applications (SPA).
• It was developed and is maintained by Meta (Facebook).
• React is component-based, meaning the UI is built using small, reusable blocks called components.
• It uses a Virtual DOM for fast and efficient UI updates.

• Types of components:

  • Functional components
  • Class components

• Components can manage state and receive props to handle dynamic data.

2. Framework vs Library

• A Library is a collection of reusable code where you control the flow of your application (e.g., React for UI rendering).
• A Framework provides a complete structure and controls the flow, deciding how your code fits in (e.g., Angular, Django).
• Library → You call it.
• Framework → It calls you.