Environment Variables in Node.js: The Complete Guide (2026)

1. 1Set environment variables using the process.env object in Node.js
2. 2Use a .env file to store sensitive data and load it into your application
3. 3Configure environment variables for different deployment environments
4. 4Use a library like dotenv to simplify environment variable management
5. 5Test your application with different environment variable configurations

Backend developers and DevOps engineers can benefit from this guide to manage environment variables and ensure secure data storage

💡 Environment variables help keep sensitive data secure by separating it from your codebase

Learn how to use environment variables in #Nodejs to securely store sensitive data and configure your app #backenddevelopment