Express JS - part 1

Subrat kumar jena — Sun, 23 Oct 2022 07:35:05 +0000

What is Express js?

It is a framework for node js written over node js.

Creating a server in node js is very time taking as well as it is difficult to understand for beginners.

visual representation

Express allows developers to focus on business logic. Instead of focusing on details(routing, parsing incoming body requests).

npm install --save express

const http = require('http)
const express = require('express')

const app = express()

create server by calling createServer method and pass app as callback handler

const server = http.createServer(app)
server.listen(3000)

run the nodemon server
npm start

If nodemon not installed follow these steps

npm install --save-dev nodemon

make changes to the package.json file - in script, add the main js file where the server is initialized.
in my case main file is app.js

"scripts": {
    "start": "node app.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },