How to Implement OAuth in Your Node.js Backend (GitHub & Google Login)

Learn how to implement OAuth login in a Node.js backend using GitHub and Google — without using any library. This tutorial walks you through the entire OAuth flow from scratch so you understand exactly what happens at each step.

You'll learn:
- How OAuth actually works (with real-world examples)
- How to register your app with GitHub and Google
- What redirect URIs and authorization codes are
- How to exchange the code for an access token
- How to fetch the user's profile and email
- How to wire it all up to a simple frontend

Backend repo: https://github.com/olawanlejoel/nodejs-oauth-demo

⏱️ Timestamps:
- 0:00 Intro
- 0:42 How OAuth Works (Explained Simply)
- 2:05 Registering on GitHub & Google
- 4:30 Setting up the Node.js project
- 6:00 GitHub OAuth Flow
- 10:00 Google OAuth Flow
- 13:00 Testing it end to end
- 15:00 Wrapping up and next steps

📚 Resources:
- GitHub OAuth Docs: https://docs.github.com/en/developers/apps/building-oauth-apps
- Google OAuth Docs: https://developers.google.com/identity/protocols/oauth2

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Видео How to Implement OAuth in Your Node.js Backend (GitHub & Google Login) канала Code With Joel