Login With Facebook using NodeJS

Node.js is a popular platform for building web applications and it supports various authentication methods including OAuth. In this article, we will discuss how to integrate Facebook login with a Node.js application using OAuth credentials such as App ID and Secret Key.

Setting Up OAuth Credentials

Before you can integrate Facebook login with your Node.js application, you need to create an app on the Facebook Developer platform and obtain the App ID and Secret Key. These credentials will be used to authenticate your application with Facebook.

Creating a Facebook App

To create a Facebook app, visit the Facebook Developer platform and follow the instructions to create a new app. Once you have created the app, you will be provided with the App ID and Secret Key.

Integrating Facebook Login with Node.js

Once you have obtained the App ID and Secret Key, you can start integrating Facebook login with your Node.js application. You can use popular Node.js packages such as passport-facebook and express to handle the authentication process.

Installing Required Packages

First, install the required packages using npm:


npm install passport-facebook express-session


Configuring OAuth Credentials

Next, you need to configure the OAuth credentials in your Node.js application. You can use the following code snippet as a reference:

    const passport = require('passport');
    const FacebookStrategy = require('passport-facebook').Strategy;

    passport.use(new FacebookStrategy({
      clientID: 'YOUR_APP_ID',
      clientSecret: 'YOUR_APP_SECRET',
      callbackURL: 'http://localhost:3000/auth/facebook/callback'
    },
    function(accessToken, refreshToken, profile, done) {
      // Handle the authentication process
    }));

    app.get('/auth/facebook', passport.authenticate('facebook'));

    app.get('/auth/facebook/callback',
      passport.authenticate('facebook', { successRedirect: '/', failureRedirect: '/login' }));
  

Implementing the Authentication Process

Finally, you need to implement the authentication process by handling the callback URL and performing the necessary actions based on the user’s profile and authentication details.

Conclusion

Integrating Facebook login with a Node.js application using OAuth credentials is a straightforward process. By following the steps mentioned in this article, you can enable users to log in to your application using their Facebook accounts, providing a seamless and convenient authentication experience.