In this article we are going to create simple express application so follow along with me
Step 1: Install nodejs from Node.JS on your system.
Step 2: After installation check the version of NodeJS to ensure that NodeJS is installed or not.
node --v
Step 3: Create a folder for your app with the following command Go to that directory
mkdir my_app
cd my_app
Step 4: initialize NPM for your project by using npm init -y
Step 5: Install the express package from NPM.
npm i express
Step 5: create the index.js in your my_app directory
Step 6 Write the following code to create your backend application
const express = require('express');
const PORT = 3001 || process.env.PORT
const app = express()
app.get('/', (req, res) => {
res.send("<h1>This is my first app</h1>")
})
app.listen(PORT, () => {
console.log(`App is up and running on ${PORT}`);
})
Step 7: Search http://localhost:3001 on your tab bar of the browser.
Yey, First application has been created successfully and you will get an output like mentioned below
