express and node pakages

  1. Install Node.js:

  2. Download and install Node.js from the official website: https://nodejs.org/

  3. Create a new Express.js project:

  4. Open a terminal and navigate to the desired project directory.
  5. Run npm init -y to initialize a new Node.js project with default settings.

  6. Run npm install express to install the Express.js framework.

  7. Create an Express app:

  8. Create a new file (e.g., app.js) in your project directory.
  9. Require Express by adding const express = require('express'); at the top of your file.

  10. Create an instance of the Express app: const app = express();

  11. Define routes:

  12. Define routes using app.get(), app.post(), etc. methods on the app object.

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

  14. Start the server:

  15. Add a listener to start the server on a specific port.

  16. Example: app.listen(3000, () => { console.log('Server is running on port 3000'); });

  17. Run the Express app:

  18. Execute node app.js in the terminal to run your Express application.

  19. Access the app in a web browser:

  20. Open a web browser and navigate to http://localhost:3000/ (or the specified port) to see your Express app in action.