🔐📁 How to Use Environment Variables in Node.js (.env Setup Step-by-Step!) 🚀
In this video, we learn how to set up and use environment variables in a Node.js backend project to manage sensitive data like port numbers and database URLs—securely and outside of your source code.
🔐 What You’ll Learn:
Why environment variables are important
How to install and use the dotenv package
Creating a .env file and defining variables (like PORT=8000)
Accessing environment variables using process.env
Fixing common mistakes (like installing dotenv as a normal dependency instead of a dev dependency)
Restarting your server after updating .env
Logging and testing environment variables for debugging
🎯 Perfect For: Beginners working on backend projects who want to keep their credentials and config data safe—especially before uploading code to GitHub.
🛠️ Tools Used:
Node.js
dotenv
npm
📌 Don’t forget to:
Create a .gitignore file to exclude your .env
Restart your server after any changes to the .env
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