Node.js Environment Variables Guide

Using Environment Variables

Node.js environment variables use dotenv for configuration.

Introduction to Environment Variables

Environment variables are key-value pairs used to configure applications. They are essential for managing configuration settings outside your codebase, providing a way to adapt your application to different environments, such as development, testing, and production.

In Node.js, environment variables can be accessed using process.env. This built-in object provides a way to access the environment variables set in your system.

Using dotenv for Configuration

The dotenv package is a popular option for managing environment variables in Node.js projects. It allows you to create a .env file in your project's root directory, where you can define environment variables in a simple format.

To use dotenv, first install it using npm:

After installation, you can create a .env file in your project's root directory:

Node.js Environment Variables

Using Environment Variables

Introduction to Environment Variables

Using dotenv for Configuration

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