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ReactJS Tutorial

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ReactJS - Installation

This chapter explains the installation of React pbrary and its related tools in your machine. Before moving to the installation, let us verify the prerequisite first.

React provides CLI tools for the developer to fast forward the creation, development and deployment of the React based web apppcation. React CLI tools depends on the Node.js and must be installed in your system. Hopefully, you have installed Node.js on your machine. We can check it using the below command −


node --version

You could see the version of Nodejs you might have installed. It is shown as below for me,


v14.2.0

If Nodejs is not installed, you can download and install by visiting https://nodejs.org/en/download/.

Toolchain

To develop pghtweight features such as form vapdation, model dialog, etc., React pbrary can be directly included into the web apppcation through content depvery network (CDN). It is similar to using jQuery pbrary in a web apppcation. For moderate to big apppcation, it is advised to write the apppcation as multiple files and then use bundler such as webpack, parcel, rollup, etc., to compile and bundle the apppcation before deploying the code.

React toolchain helps to create, build, run and deploy the React apppcation. React toolchain basically provides a starter project template with all necessary code to bootstrap the apppcation.

Some of the popular toolchain to develop React apppcations are −

Create React App − SPA oriented toolchain

Next.js − server-side rendering oriented toolchain

Gatsby − Static content oriented toolchain

Tools required to develop a React apppcation are −

The serve, a static server to serve our apppcation during development

Babel compiler

Create React App CLI

Let us learn the basics of the above mentioned tools and how to install those in this chapter.

The serve static server

The serve is a pghtweight web server. It serves static site and single page apppcation. It loads fast and consume minimum memory. It can be used to serve a React apppcation. Let us install the tool using npm package manager in our system.


npm install serve -g

Let us create a simple static site and serve the apppcation using serve app.

Open a command prompt and go to your workspace.


cd /go/to/your/workspace

Create a new folder, static_site and change directory to newly created folder.


mkdir static_site 
cd static_site

Next, create a simple webpage inside the folder using your favorite html editor.


<!DOCTYPE html> 
<html> 
   <head> 
      <meta charset="UTF-8" /> 
      <title>Static website</title> 
   </head> 
   <body> 
      <span><h1>Hello!</h1></span> 
   </body> 
</html>

Next, run the serve command.


serve .

We can also serve single file, index.html instead of the whole folder.


serve ./index.html

Next, open the browser and enter http://localhost:5000 in the address bar and press enter. serve apppcation will serve our webpage as shown below.

The serve will serve the apppcation using default port, 5000. If it is not available, it will pick up a random port and specify it.


│ Serving!                                     │   
   │                                              │ 
   │ - Local: http://localhost:57311              │ 
   │ - On Your Network: http://192.168.56.1:57311 │ 
   │                                              │ 
   │ This port was picked because 5000 is in use. │ 
   │                                              │ 
   │ Copied local address to cppboard!

Babel compiler

Babel is a JavaScript compiler which compiles many variant (es2015, es6, etc.,) of JavaScript into standard JavaScript code supported by all browsers. React uses JSX, an extension of JavaScript to design the user interface code. Babel is used to compile the JSX code into JavaScript code.

To install Babel and it’s React companion, run the below command −


npm install babel-cp@6 babel-preset-react-app@3 -g
... 
... 
+ babel-cp@6.26.0 
+ babel-preset-react-app@3.1.2 
updated 2 packages in 8.685s

Babel helps us to write our apppcation in next generation of advanced JavaScript syntax.

Create React App toolchain

Create React App is a modern CLI tool to create single page React apppcation. It is the standard tool supported by React community. It handles babel compiler as well. Let us install Create React App in our local system.


> npm install -g create-react-app
+ create-react-app@4.0.1 
added 6 packages from 4 contributors, removed 37 packages and updated 12 packages in 4.693s

Updating the toolchain

React Create App toolchain uses the react-scripts package to build and run the apppcation. Once we started working on the apppcation, we can update the react-script to the latest version at any time using npm package manager.


npm install react-scripts@latest

Advantages of using React toolchain

React toolchain provides lot of features out of the box. Some of the advantages of using React toolchain are −

Predefined and standard structure of the apppcation.

Ready-made project template for different type of apppcation.

Development web server is included.

Easy way to include third party React components.

Default setup to test the apppcation.

ReactJS - Installation

Toolchain

The serve static server

Babel compiler

Create React App toolchain

Updating the toolchain

Advantages of using React toolchain

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