Authentication in Node.js

Authentication

What is JWT

Prerequisites

  • 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.

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

🤔 How to cheat on any online typing test

Angular Denver 2019 — A Rock ‘N Rolling Event

Sketch2React Update — Dark Mode and Simulators 🌛📱

Patterns for Deriving State in Your App

Cracking the frontend interview in 2022

< Updates of KlayMint collection search bar features >

TypeScript: Conditional Subtypes Using ‘as clause’

A boy doing coding while drinking coffee

Todo App using VueJS 3 Composition API and Tailwind CSS

Actual App Screenshot Showcase

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Musab Abbasi

Musab Abbasi

Computer Science student with MERN stack website development expertise.

More from Medium

Crafting paginated API with NodeJS and MSSQL

Build a CRUD Service with Node.js, Express.js and MongoDB

MERN Full Stack Application (Part 1/4 CRUD)-MongoDB,Express.js,

Express MongoDB