React Fundamentals

React Fundamentals

A beginner's guide to building user interfaces.

Introduction

React is a JavaScript library for building user interfaces (UIs).

It’s primarily used for building single-page applications (SPAs).

It’s component-based, making it efficient and reusable.

Components

React components are reusable building blocks.

They’re like pieces of a puzzle – you can combine them to create complex UI elements.

Common component types include: Buttons, Input Fields, Lists, Cards, and more.

JSX

JSX (JavaScript XML) is a syntax extension to JavaScript that allows you to write HTML-like code within your JavaScript code.

It simplifies the process of creating UI elements by using a more readable structure.

Key Concepts

State: Data that describes the UI's current state.

Props: Data passed to a component to customize its behavior.

Lifecycle Methods: Functions that are called at different points during the component's lifecycle.

Sample Component (Button)

This is a simple example showcasing how to use React.