Authentication in Node.js


What is JWT


  • A working knowledge of JavaScript.
  • A good understanding of Node.js.
  • A basic understanding of MySql or any database of your choice.
  • Postman and some knowledge on how to use Postman.

Creating our backend server

npm install express jsonwebtoken dotenv nodemon bcryptjs mysql
const express = require(“express”);const app = express();const bodyParser = require(“body-parser”);app.use(express.json());app.use(bodyParser.urlencoded({extended: true}));app.listen(5000, ()=>{console.log(“Server is listening on port 5000”);})
“start”: “nodemon server.js”,

What is MySQL

Setting up MySql

Connecting MySql to Node.js

create database testDB;
use testDB;
create table user(
id int not null auto_increment,
username varchar(250) not null,
user_password varchar(1000) not null,
primary key(id)
insert into user(username, user_password)
values(‘user’, ‘1234’)

Registering a User

What is bcryptjs

Login a User

Correct credentials output

Incorrect credentials output

Using JWT




Computer Science student with MERN stack website development expertise.

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Musab Abbasi

Musab Abbasi

Computer Science student with MERN stack website development expertise.

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