Express JS Tutorial | CRUD Part 1

Welcome to the first part of our Express JS CRUD tutorial. In this tutorial, we will be learning how to create, read, update, and delete data using Express JS.

What is Express JS?

Express JS is a web application framework for Node.js that provides a robust set of features for web and mobile applications. It is designed to make the process of building web applications and APIs much simpler and easier.

CRUD Operations

CRUD stands for Create, Read, Update, and Delete. These are the basic operations that are commonly used in database management systems. In this tutorial, we will be learning how to perform these operations using Express JS and MongoDB.

Getting Started

In order to follow along with this tutorial, you will need to have Node.js and MongoDB installed on your computer. If you haven’t installed them yet, you can download and install them from their official websites.

Creating a Basic Express Application

First, let’s create a basic Express application. Open your terminal and run the following commands:

    
      mkdir express-crud-tutorial
      cd express-crud-tutorial
      npm init -y
      npm install express
    
  

Once you have done that, create a new file named index.js and add the following code:

    
      const express = require('express');
      const app = express();

      app.get('/', (req, res) => {
        res.send('Hello, world!');
      });

      const port = 3000;
      app.listen(port, () => {
        console.log(`Server is running on port ${port}`);
      });
    
  

To start the application, run the following command in your terminal:

    
      node index.js
    
  

Now, if you open your web browser and go to http://localhost:3000, you should see the message “Hello, world!” displayed on the screen.

This is just the beginning of our Express JS CRUD tutorial. In the next part, we will dive into creating, reading, updating, and deleting data using Express JS and MongoDB.