Node JS : The Ultimate Resource to Beginners

This blog is about the Node.js platform, a popular choice for building scalable and reliable web applications. It covers a wide range of topics, including:

• Getting started with Node.js
• Building web applications with Node.js
• Using Node.js for Microservices
• Securing Node.js applications
• Optimizing Node.js performance
• Deploying Node.js applications

Installation

• Go to https://nodejs.org/en.
• Download the LTS version.
• Accept all terms and install.
• Now Check whether the node is installed in your computer or not by typing node--version on the hyper terminal.

Run a JS File by node

• Open the VS Code terminal.
• Type the node--version to get the node version and also check the installation of the node.
• Go to the directory where the JS file is stored using cd "address of js file".
• Now type node yourfilename.js (for eg: node index.js) and hit enter.

React Native Modules

const fs = require("fs")//file system

//For writing some text in a text file named message.txt using fs writefile module
fs.writeFile("message.txt","Hello, World!",(err)=>{
if (err) throw err;
console.log("The file has been saved");
});

//For reading some text from a text file named msg.txt using fs readfile module
fs.readFile("./msg.txt","utf8",(err,data)=>{
if (err) throw err;
console.log(data);
});

NPM Package Manager

Let we have to generate a random superhero name using the node then the following steps are involved for generating the superhero name.

• Open the VS Code terminal.
• Initialise npm using npm init.
• Install npm pacakges using npm i superheroes.
• Open the package.json file and type in the file Type: "module".
• Now open the js file and type the following code.

 import superheroes from "superheroes";

  const name = superheroes.random();

  console.log(name);