What is Express.js and how do I create a basic app?

Question

AI Bootstrap Builder · Accepted Answer

Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for building web and mobile applications. Here's how you can create a basic Express.js app:


        
        const express = require('express');
        const app = express();
        const port = 3000;

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

        app.listen(port, () => {
          console.log(`Example app listening at http://localhost:${port}`);
        });

ADDITIONAL COMMENT:

Install Express.js using npm with the command: "npm install express".
The code creates a simple server that listens on port 3000.
When accessing the root URL ("/"), it responds with "Hello World!".
Run the app using the command: "node filename.js", replacing "filename.js" with your file's name.

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What is Express.js and how do I create a basic app?

Asked on Sep 19, 2024

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