JavaScript is a widely-used programming language renowned for its lightweight nature and just-in-time compilation capabilities. It boasts first-class functions, which contribute to its versatility. Though it is primarily employed for scripting web pages, JavaScript has gained traction in various non-browser environments, such as Node.js, Apache CouchDB, and Adobe Acrobat.

As a programming language, JavaScript plays a crucial role in adding interactivity to websites. It operates as a single-threaded language and leverages a callback queue for asynchronous processing.

To learn more about JavaScript, visit the Mozilla Developer Network at

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