Using Express.js to create server, build backend server with express.js in Java Script 5 minutes

Here’s a step-by-step guide to build a Backend RESTful server using Express.js in JavaScript in 5 minutes.

create a local server with Express.JS in vs code 

Step 1: Initialize Your Project

Create a new directory for your project and navigate into it. Initialize a new Node.js project with Install Express.js as a dependency with.

npm init -y

npm install express

Step 2: Set Up Your Server File

• Create a file named server.js in your project directory.
• Write the initial server code using Express.js.

Step 3: Define Routes

Define routes for different HTTP methods (GET, POST, PUT, DELETE).

Use Express’s routing methods :

• app.get
• app.post
•  app.put 
• app.delete

these command used to handle requests.

Step 4: Start Your Server

Have your server listen on a specific port, like 8000. Use app.listen(PORT, callback) to start your server.

Step 5: Run Your Server

• In the terminal, run node server.js to start your Express server.

Here’s a basic example of what your server.js file might look like:

const express = require(‘express’);
const app = express();
const port = 3000;

app.get(‘/’, (req, res) => {
res.send(‘Hello World!’);
});

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

• above code paste in your server.js file.
• open the terminal in vs code and tap on the “run code” button if will you see the following output in terminal as following screenshot:
• PS C:\Rest api> node “c:\Rest api\my-rest-api\server.js”
• Server running at http://localhost:3000
• now your Express.js server ready to fetch result;

• open the Browser and load  http://localhost:3000  to see the output

This server will respond with “Hello World!” when you access the root URL. You can test your server by using tools like Postman or URL to send HTTP requests to your server’s routes123.

For a more detailed guide, including how to create a RESTful server, handle request data, connect to databases, and implement authentication, you can refer to the resources I found. If you need further help or have specific questions about any step, you can check my other articles. i hope this post helpful for you. thanks for visiting. i will see you in next post.