JavaScript

What is JavaScript?

The programming language of the web, a high-level, interpreted scripting language that enables dynamic content and interactive web pages. Originally created for browsers, JavaScript now runs everywhere - servers, mobile devices, desktop applications, and IoT devices. Features first-class functions, prototypal inheritance, and asynchronous programming capabilities. Powers over 97% of all websites and is the foundation of modern web development. Continuously evolving with new features through ECMAScript standards.

When to use it

• The universal language for web development, used for client-side scripting, server-side development (Node.js), mobile app development (React Native), and desktop applications (Electron).
• Essential for building interactive websites, web applications, APIs, and real-time applications.
• Used in virtually every modern web technology stack.
• Perfect for rapid prototyping, full-stack development, and when you need a single language across multiple platforms.

When NOT to use it

• When type safety is critical - TypeScript provides better guarantees
• CPU-intensive backend tasks - Python, Go, or Rust are more suitable
• Systems programming - lacks low-level control
• When strict typing and compile-time checks are required - consider TypeScript or other typed languages

Related Technologies

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Learning Resources