<p>The primary use of environment variables is to hide sensitive data or to provide different data based on the environment you are in</p>\n\n<h3>Key points</h3>\n\n<ul>\n<li>Key Value Pairs</li>\n<li>Hide sensitive data</li>\n<li>Different data based on the environment</li>\n<li>Only works server side</li>\n</ul>\n\n<h2>Try it</h2>\n\nin your terminal run two commands:\n\n<pre><code>touch .env\n</pre></code>\n\n<pre><code>npm install dotenv\n</pre></code>\n\n<h4>Add your variable</h4>\n<p>Inside the .env file add in your variable<p>\n\n<pre><code>YOURUNIQUEKEYHERE=valueoverhere\n</pre></code>\n\n<h4>Access it with JavaScript</h4>\n\n<p>Inside your js file require dotenv then access your variable<p>\n<pre><code class=\"javascript\">require('dotenv').config()\nconsole.log(process.env.YOURUNIQUEKEYHERE)\n// valueoverhere\n</pre></code>\n<p><p>\n

The primary use of environment variables is to hide sensitive data or to provide different data based on the environment you are in

## Key points
1. Key Value Pairs
2. Hide sensitive data
3. Different data based on the environment
4. Only works server side

# Try it
in your terminal run two commands:

### Add your variable
Inside the .env file add in your variable

### Access it with JavaScript
Inside your js file require dotenv then access your variable

require('dotenv').config()
console.log(process.env.YOURUNIQUEKEYHERE)

Pick a display name

JavaScript Environment Variables (.env)

Key points

Try it

Add your variable

Access it with JavaScript