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Building a basic web server using the Express.js framework
Express.js is a popular Node.js web application framework that simplifies the process of building web servers. In this article, we will guide you through the process of creating a basic web server using Express.js.
Step 1: Install Node.js and Express.js
Before you can start building your web server, you will need to have Node.js installed on your machine. You can download Node.js from the official website and follow the installation instructions.
Once you have Node.js installed, you can install Express.js by running the following command in your terminal:
npm install express
Step 2: Create a basic web server
Now that you have Express.js installed, you can start building your web server. Create a new JavaScript file, for example server.js, and add the following code:
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}`);
});
Step 3: Run your web server
To run your web server, go to your terminal and navigate to the directory where your server.js file is located. Then, run the following command:
node server.js
Your web server should now be running on port 3000. You can open your web browser and navigate to http://localhost:3000 to see the “Hello, World!” message displayed.
Conclusion
Congratulations! You have successfully built a basic web server using the Express.js framework. Express.js makes it easy to create robust and scalable web servers, and with a little bit of practice, you can create more complex applications using this powerful framework.
