React 2020 — P1: Intro and Installation

React 2020 — P1: Intro and Installation

Let’s tackle another topic: React. React is a JavaScript library that we’ll use to build User Interfaces.

Let’s tackle another topic: React. React is a JavaScript library that we’ll use to build User Interfaces. Everything is going to be split into components for easy maintenance and scalability. What are components? Take a look below. It’s much easier to manage a website when it’s divided into its own individual components. We have the headernavsectionasidefooter, etc. Components can in-turn contain other components. The _section _component below contains four _article _components. All of the components below are in the main component.

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You should have basic HTML, CSS, and JavaScript under your belt before you attempt to tackle React. Even though people will say that you have to be an absolute JavaScript ninja to take on React, I tend to disagree with that statement; a basic understanding will suffice. Once you approach a topic that you don’t understand, you can always freshen up on it then. An overall understanding of functional and object-oriented programming is extremely beneficial, however.

Before you can use React, you must be able to install React. As far as requirements go, make sure that you have the latest version of Node installed on your computer. Head over to http://nodejs.org/ and get the latest (LTS) version. Run through the prompts and you should be set-up. After the installation, you can verify that you have node installed by typing in node -v _into your terminal. You’ll also need to verify that _npm _was installed by typing in _npm -v. The node package manager, npm, will be installed with Node. Why do you need npm? Because React is just an npm package. Finally, run _npx -v _to verify that the npm package runner is installed. This is what we’re going to be using to install React onto our computers.

You may also want to get the React Developer Tools browser extension to be able to view how your React app is functioning in the browser.

And we’re all set. Open your terminal and navigate to a directory where you would like to create your React app. Run the command:

c:\youtube>npx create-react-app yt-react

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