React JS Notes

What is React?

React (also called React.js or ReactJS) is a JavaScript library developed by Facebook (now Meta) for building user interfaces (UI) — especially for single-page applications (SPAs) where the content changes dynamically without reloading the page.

React is a JavaScript library used to build fast, interactive, and reusable user interfaces for web applications using a component-based architecture.

Features

Fast — Uses Virtual DOM for quick updates.
Reusable — Components can be reused anywhere.
Flexible — Works with other libraries or frameworks.
Easy to Learn — Especially if you know JavaScript.
Huge Community — Thousands of packages and tutorials available.

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