How to run JavaScript in Terminal?

To run JavaScript in Terminal, first install Node.js, then run your JavaScript file like so: node file.js.

First, install Node.js, so you could run node command in your Terminal.

On a Mac, you can do it via Homebrew:

brew install node

Then create a JavaScript file named test.js with this content:

console.log('Hello World!');

Finally, run node with this file:

node test.js

And you will see this printed in the Terminal:

Hello World!