If you’re learning JavaScript or building web applications, Visual Studio Code (VS Code) is one of the best editors you can use. It’s lightweight, powerful, and packed with developer-friendly features.
But if you’re using a Mac, you might wonder – how do I actually run JavaScript code inside VS Code?
The good news is: it’s simple once you set up your environment correctly. In this guide, we’ll walk through everything you need to do, from installing Node.js to running your first JavaScript file in VS Code on macOS.
Run JavaScript in Visual Studio Code on macOS
For that, first of all, we have to download and install Visual Studio Code and Node.js. Here’s how you can do it.
1. Install Visual Studio Code
If you haven’t installed VS Code yet, start there.
1. Visit the official Visual Studio Code for macOS page.
2. Download the macOS Universal build (this version works on both Intel and Apple Silicon Macs).
3. Open the downloaded .zip file and drag Visual Studio Code into your Applications folder.
Once installed, open it either from Launchpad or by typing the following command in your terminal:
codeIf the code command doesn’t work yet, don’t worry — we’ll enable it shortly.
2. Install Node.js and npm
To run JavaScript outside the browser (for example, in VS Code’s terminal), you need Node.js. It allows you to execute .js files directly from the command line.
1. Go to nodejs.org.
2. Download the LTS (Long-Term Support) version for macOS — this is the most stable choice.
3. Open the downloaded .pkg file and follow the installation steps.
Once installed, verify Node.js and npm (Node Package Manager) by opening Terminal and running:
node -v
npm -vIf both return version numbers, Node.js is installed successfully.
3. Open Visual Studio Code From the Terminal (Optional)
If you’d like to open VS Code directly from the Terminal (which makes development faster), you can enable the code command:
- Open VS Code.
- Press Cmd + Shift + P to open the Command Palette.
- Type and select Shell Command: Install ‘code’ command in PATH.
Now you can open any folder in VS Code by typing code . in your terminal — a convenient trick for developers.
How to Create and Run a JavaScript File
Now let’s write some code.
1. Open VS Code.
2. Click on File → New File.
3. Save it as app.js in your preferred folder.
4. Then, type a simple line of JavaScript code:
console.log("Hello, world! Running JavaScript on macOS!");5. Now that Node.js is installed, you can run your JavaScript file directly from the terminal inside VS Code. Type the following command and press Enter:
node app.js6. You should see the output:
Hello, world! Running JavaScript on macOS!That’s it — your JavaScript is running successfully right inside VS Code on macOS.
How to Fix Common Path Issues (If ‘node’ Command Not Found)
If you see an error like command not found: node, it usually means Node.js wasn’t added to your system PATH correctly.
To fix this:
1. Close VS Code and reopen your Terminal.
2. Run the following command to check where Node.js is installed: which node If it shows something like /usr/local/bin/node, Node.js is properly installed.
3. If it doesn’t show anything, reinstall Node.js and restart your Mac.
After restarting, reopen VS Code and run the same node app.js command again — it should work.
How to Run JavaScript in a Browser
If you’re writing front-end JavaScript meant to run inside a web browser instead of Node.js, you can test it easily in VS Code too.
1. Create a new file named index.html.
2. Add this code inside:
<!DOCTYPE html>
<html>
<head>
<title>JS Test</title>
</head>
<body>
<script src="app.js"></script>
</body>
</html>3. Right-click anywhere inside index.html and select “Open with Live Server” (after installing the Live Server extension from the VS Code marketplace).
4. Your browser will open and automatically execute the JavaScript inside app.js.
This approach is great when you’re testing DOM manipulation, animations, or web interactivity.
Install Useful JavaScript Extensions
VS Code’s real power lies in its extensions. For JavaScript development, here are a few that can make your workflow smoother:
- ESLint – Automatically checks your JavaScript code for errors and style consistency.
- Prettier – Formats your code for better readability.
- Debugger for Chrome – Helps you debug JS directly in your browser.
- Path Intellisense – Auto-completes file paths in your project.
To install them, open the Extensions view (Cmd + Shift + X) and search by name.
Conclusion
Running JavaScript in Visual Studio Code on macOS is straightforward once you have Node.js installed. With the built-in terminal and powerful extensions, VS Code becomes the perfect environment for writing, testing, and debugging JavaScript code — whether you’re building backend scripts or browser-based applications.
Now that your setup is complete, go ahead and write some JavaScript magic! Whether it’s a small console app or the start of your next big project, your Mac is ready to run it all smoothly from inside VS Code.
