Tips, Tricks, and Techniques for Node.js Development 5.1: Process Environment Variables

This video tutorial covers the use of environment variables in Node.js, including how to access and manipulate them. It explains the role of .env files and tools like node-env-run and if-env for managing environments. The tutorial also discusses handling environment variables in cloud hosts and local development, providing practical examples and code snippets.

What is the primary purpose of environment variables in Node.js applications?

• To improve the graphical interface

• To reduce the size of the application

• To enhance the speed of the application

• To store sensitive information securely

Which file format is commonly used to store environment variables for Node.js applications?

• .xml

• .txt

• .env

• .json

What default port is used when process.env.PORT is undefined in a local development environment?

• 8080

• 5000

• 8000

• 3000

Which package helps in reading environment variables from a .env file?

• webpack

• nodemon

• express

• dotenv

What is the purpose of the node-env-run package?

• To compile Node.js code

• To test Node.js applications

• To manage environment variables during development

• To run Node.js applications in a browser

How can you conditionally run npm scripts based on environment variables?

• Using webpack

• Using express

• Using nodemon

• Using if-env package

What is a key benefit of using environment variables in cloud-hosted applications?

• They increase the application's speed

• They allow for dynamic configuration based on the environment

• They reduce the application's memory usage

• They enhance the application's security