Web Development Intermediate

What is TypeScript?

A typed superset of JavaScript that adds static type checking, interfaces, and advanced IDE support to JavaScript development.

TypeScript adds type annotations to JavaScript: function greet(name: string): string. The compiler catches type errors before runtime, preventing common bugs. TypeScript compiles to plain JavaScript, running everywhere JavaScript runs.

Features include interfaces, generics, enums, union types, type guards, and declaration files (.d.ts) for typing external libraries. TypeScript is used by Angular, many React projects, Deno, and most large-scale JavaScript codebases. It significantly improves developer productivity and code quality.

Learn More About This Topic

TypeScript for Backend Developer

Directly covers this topic

TypeScript Design Patterns

Directly covers this topic

TypeScript Fundamentals

Directly covers this topic

Related Terms

Content Negotiation

An HTTP mechanism where client and server agree on the best representation of a resource based on format, language, or encoding preferences.

SPA (Single Page Application)

A web application that loads a single HTML page and dynamically updates content without full page reloads.

Google's metrics for measuring user experience quality, including loading speed, interactivity, and visual stability of web pages.

Static Site Generator (SSG)

A tool that generates a complete static HTML website from templates and content at build time, requiring no server-side processing.

Structured Data (Schema.org)

A standardized vocabulary for marking up web content so search engines can understand and display it as rich results.

Hypermedia As The Engine Of Application State — a REST constraint where API responses include links to related actions and resources.

View All Web Development Terms →