It uses the V8 JavaScript engine to execute JavaScript code outside of a web browser. With Node.js, you can use JavaScript to write command line tools and to perform server-side scripting.

You’ll also want to learn how to use JavaScript for front-end web development, and a language such as PHP for back-end development.

Developers use statements to control the overall program flow, including variable declarations, conditional operations, and iterative processes. Here's how to write JavaScript statements.