Welcome to the React Basics Tutorial! This guide will help you get started with React, a popular JavaScript library for building user interfaces. React is maintained by Facebook and is used by many companies around the world for their web applications.
Introduction
React is a JavaScript library for building user interfaces. It allows you to build reusable UI components and efficiently update and render large lists of data. React is not a framework, but rather a tool that you can use to build frameworks and applications.
Key Concepts
Here are some of the key concepts in React:
- Components: React applications are built using components. Components are reusable and can be composed to build complex UIs.
- JSX: JSX is a syntax extension for JavaScript that looks similar to HTML. It allows you to write your UI as a function of your data.
- State: State is a way to store and manage data that changes over time within a component.
- Props: Props (short for "properties") are how you pass data from parent to child components.
Getting Started
To get started with React, you'll need to install Node.js and npm (Node Package Manager). Once you have Node.js and npm installed, you can create a new React application using the following command:
npx create-react-app my-app
After running the above command, you can navigate to your new application directory and start running it with:
cd my-app
npm start
This will start a development server and open your application in the default web browser.
Example Component
Here's a simple example of a React component:
import React from 'react';
function Welcome(props) {
return <h1>Hello, {props.name}</h1>;
}
export default Welcome;
In this example, Welcome is a functional component that takes a name prop and renders an h1 element with the greeting.
Next Steps
To learn more about React, you can read the official documentation at https://reactjs.org/docs/getting-started.html.
For more advanced tutorials and resources, check out our Advanced React Tutorials.