Membuat Forum Diskusi Part 8 Dengan Express Js (Back End, Login Express js) Part 1

Express Js is a popular web application framework for Node.js. In this tutorial, we will be focusing on creating a discussion forum with Express Js. This will include creating the back end for our forum and implementing a login system using Express js.

Getting Started

To get started with creating our discussion forum, we first need to set up a new Node.js project and install the necessary dependencies. Open up your terminal and run the following commands:

    
      npm init -y
      npm install express bcryptjs jsonwebtoken
    
  

This will create a new Node.js project and install the Express Js framework, as well as the bcryptjs and jsonwebtoken packages for handling user authentication.

Creating the Back End

Now that we have our project set up, we can start creating the back end for our forum. We will be using Express Js to handle routing and middleware for our application. Create a new file called app.js and add the following code:

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

      // Define routes and middleware here

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

This sets up a basic Express Js application with a server running on port 3000. We can now start defining our routes and middleware for our discussion forum.

Implementing User Authentication

One of the key features of our forum will be the ability for users to register and log in to access the discussion threads. We can use the bcryptjs package to hash and compare passwords, and the jsonwebtoken package to generate and verify user tokens for authentication.

For now, let’s focus on setting up a basic login system with Express Js. Create a new file called auth.js and add the following code:

    
      const express = require('express');
      const router = express.Router();
      const bcrypt = require('bcryptjs');
      const jwt = require('jsonwebtoken');

      // Define routes for user authentication here

      module.exports = router;
    
  

In this file, we have set up a new Express Js router for handling user authentication. We can now define routes for user registration, login, and token generation using bcryptjs and jsonwebtoken.

Conclusion

In this article, we have started setting up the back end for our discussion forum using Express Js. We have also begun implementing a basic user authentication system using bcryptjs and jsonwebtoken. In the next part of this tutorial, we will continue building out our forum and adding more features to our back end.