node.js
youtube
**Title: How to Use Node Environment Variables with a DotEnv File for Node.js**
In this tutorial, learn how to manage environment variables in Node.js using the popular **dotenv** package. Environment variables are essential for separating configuration data (like API keys, database credentials, and server ports) from your main codebase. With the dotenv package, you can load environment variables from a `.env` file, making your app more secure, manageable, and portable. Follow along to see how easy it is to set up and use environment variables in your Node.js project.
### Steps to Use Environment Variables with DotEnv in Node.js:
#### 1. **Install the dotenv Package**:
- First, open your terminal and navigate to your project directory.
- Run the following command to install dotenv:
```bash
npm install dotenv
```
#### 2. **Create a `.env` File**:
- In the root directory of your project, create a file named `.env`.
- This file will store your environment variables. For example:
```env
PORT=3000
DATABASE_URL=mongodb://localhost:27017/mydb
API_KEY=your_api_key_here
```
- **Note**: Never commit your `.env` file to a public repository. Add `.env` to your `.gitignore` file to keep it private.
#### 3. **Configure dotenv in Your Project**:
- In your entry file (e.g., `index.js` or `app.js`), add the following line at the top:
```javascript
require('dotenv').config();
```
- This loads the environment var
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2024/10/15
youtube
