React is a JavaScript library for building user interfaces. React is used to build single-page applications. React allows us to create reusable UI components. Start learning React now 🏁

The content has been carefully made to be bite-sized, simple, and easy to understand. The content has been proven by millions of users over the years. It is updated and improved frequently. The syllabus …

Modify the React App Look in the my-react-app directory, and you will find a src folder. Inside the src folder there is a file called App.js, open it and it will look like this:

Hooks allow functions to have access to state and other React features without using classes. They provide a more direct API to React concepts like props, state, context, refs, and lifecycle.

React finds out what changes have been made, and changes only what needs to be changed. You will learn the various aspects of how React does this in the rest of this tutorial.

React Components Components are independent and reusable bits of code. They serve the same purpose as JavaScript functions, but work in isolation and return HTML. Components come in two …

import React from "react"; import ReactDOM from "react-dom/client"; function Hello (props) { return <h1>Hello World!</h1>; } const container = document.getElementById ('root'); const root = …

To use React in production, you need npm which is included with Node.js. Also, you need to set up a React Environment, and choose a build tool.

If you don't know React, we suggest that you read our React Tutorial from scratch.

What is Front-End Development? Front-End development is an exciting career that allows you to create dynamic and responsive websites and apps. It's a good choice if you're interested in good user …