Programming programming web frontend

What is JavaScript?

Definition

JavaScript is a dynamic, interpreted programming language that runs in web browsers and on servers (Node.js). It is the only language natively supported by all browsers, making it essential for frontend interactivity and increasingly used for full-stack development.

Why It Matters

JavaScript powers client-side interactivity on every website. Combined with Node.js for backend, React/Vue for frontend, and React Native for mobile, JavaScript is the most widely used programming language in the world.

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Related Terms

HTML CSS DOM JSON TypeScript

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