JavaScript is a high-level, interpreted programming language primarily used to make web pages interactive.

It runs directly in web browsers (and on servers via environments like Node.js) and is known for being:

• Dynamic: No need to declare types explicitly.
• Event-driven: Great for handling user input and asynchronous tasks.
• Versatile: Used for front-end, back-end, and even mobile or desktop apps.

In short — JavaScript is the core language of the web, enabling dynamic behavior and interactivity in websites and applications.