React: Setting Up

Published on : August 17,2022
React: Setting Up

Hi dev,

In this article we will learned about JSX and we accessed the React and ReactDOM package using CDN. However, in real projects instead of CDN you will use the create-react-app package to generate a React project starter(boilerplate). The initial create-react-app was released on Jul 22, 2016. Before this time, developers used to configure webpack with a JavaScript module bundler, babel and all the necessary packages manually and this used to take half an hour or maybe more. Now, create-react-app will take care of everything and you will be in charge of only developing the product, instead of spending too much time configuring and setting up projects. Before we start using different tools, let's have a brief introduction to all the tools we are going to use in this challenge. You do not have to understand everything, but I will try to give a very short introduction to some of the tools and technologies that we use when we work with React.

 

Node

Node is a JavaScript runtime environment that allows JavaScript to run on the server. Node was created in 2009. Node has played a great role for the growth of JavaScript. The React application starts by default at localhost 3000. The create-react-app has configured a node server for the React Application. That is why we need node and node modules. We will see create-react-app soon.

If you do not have node, install it. Install node.js.

After downloading double click and install

We can check if node is installed on our local machine, by opening our device terminal or command prompt, and writing the following command:

 

Module

A single or multiple functions, that can be exported and imported when needed, can be included in a project. In React we do not use link to access modules or packages, instead we import the module. Let's see how to import and export a module or modules:

// math.js
export const addTwo = (a, b) => a + b
export const multiply = (a, b) => a * b
export const subtract = (a, b) => a - b

export default (function doSomeMath() {
  return {
    addTwo,
    multiply,
    subtract,
  }
})()

Now let's import the math.js modules to a different file:

// index.js
// to import the doSomeMath from the math.js with or without extension
import doSomeMath from './math.js'

// to import the other modules
// since these modules were not exported as default we have to desctructure
import { addTwo, multiply, subtract } from './math.js'

import * as everything from './math.js' // to import everything remaining
console.log(addTwo(5, 5))
console.log(doSomeMath.addTwo(5, 5))
console.log(everything)

After this, when you see import React from 'react' or import ReactDOM from 'react-dom' you will not be surprised.

 

Package

A Package is a module or a collection of modules. For instance, React, ReactDOM are packages.

Node Package Manager(NPM)

NPM was created in 2010. You do not need to install NPM separately - when you install node you will have also NPM. NPM is a default package manager for Node.js. It allows users to consume and distribute JavaScript modules that are available in the registry. NPM allows to create packages, use packages and distribute packages. NMP also played quite a big role in the growth of JavaScript. Currently, there is more than 350,000 packages in the NPM registry. Let's see the create-react-app on NPM registry. The number of downloads show the popularity of the package.



 

Visual Studio Code

We will use Visual Studio Code as a code editor. Download and install it if you do not have one yet.

 

Browser

We will use Google Chrome

 

Visual Studio Extensions

You may need to install these extensions from Visual Studio Code

  • Prettier
  • ESLint
  • Bracket Pair Colorizer
  • ES7 React/Redux/GraphQL/React-Native snippets

 

Create React App

To create a react project you can use one of the following ways. Let's assume you installed node. Open the command line interface (CLI), git bash or terminal on Mac or Linux. Then run the following command. I am using git bash.

 

npx create-react-app name-of-your-project

If you do not like to write npx every time you create a project you may install create-react-app package globally in your computer using the following command.

npm install -g create-react-app

After you installed create-react-app, you create a React application as follows:

create-react-app name-of-project

 

Your first React App

cd Desktop/
npx create-react-app hello-react
cd hello-react
npm start

 

Hope it will will helps you!

Categories : React

Tags : React Js

Praful Sangani
Praful Sangani
I'm a passionate full-stack developer with expertise in PHP, Laravel, Angular, React Js, Vue, Node, Javascript, JQuery, Codeigniter, and Bootstrap. I enjoy sharing my knowledge by writing tutorials and providing tips to others in the industry. I prioritize consistency and hard work, and I always aim to improve my skills to keep up with the latest advancements. As the owner of Open Code Solution, I'm committed to providing high-quality services to help clients achieve their business goals.
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