INTRODUCTION TO REACT

Hi all today I will be giving a small intro about REACT.

REACT or React.js is an open-source Javascript library developed by Facebook. The term open-source means that it is available for free of cost and also that anyone can contribute to making any updates or changes in the library.

React is primarily used for building dynamic , interactive UI's especially for single-page applications.

React focuses on performance, scalability, and simplicity.

The core concepts of React are as follows:

1. Component-Based Architecture: UI is broken into reusable components (like functions).
2. JSX: (JavaScript XML) A syntax extension that lets you write HTML-like code inside JavaScript.
3. Props: Inputs passed to components to customize behavior.
4. State: Internal data that controls component behavior and rendering.
5. Hooks: Functions like useState and useEffect that manage state and lifecycle in functional components.

React works by creating a virtual DOM which is a light-weight copy of the real DOM. It first updates any changes made to the page in the virtual DOM and after comparison with the original DOM it makes only the necessary changes to the original DOM. In this way the rendering becomes more fast and efficient.

React also provides components that can be reused in order to improve the functionality of JS and also makes the code clean and easier to maintain.