NODE — Environment Variables

Overview

Learn Environment Variables in NODE with a clear explanation and a practical example.

What you'll learn

• What Environment Variables means
• When to use it
• How it works in practice
• A copy‑paste example

Syntax

node file.js

Example

console.log("Run with: node app.js");

Notes

• Test the example in the Playground.
• Start simple, then expand.

Mistakes

• Mixing up the syntax.
• Not testing the output.