3.1 What is React?

Add React from CDN

Background

React (opens new window) is a third-party open-source JavaScript library available on NPM.

We would normally use NPM to install third-party dependencies like React, but for really simple use cases we can also use a special CDN called UNPKG (opens new window).

unpkg is a fast, global content delivery network for everything on npm. Use it to quickly and easily load any file from any package using a URL

Requirements

Add script tags to load the react and react-dom required modules from these URLS:

• https://unpkg.com/react@17.0.2/umd/react.development.js
• https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js

Have a look here to see all the different available versions React CDN (opens new window)