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

HTML elements in the page head that provide metadata about the document for browsers, search engines, and social media platforms.

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.

Web Accessibility (a11y)

The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.

A CSS layout model that provides efficient arrangement of items within a container, handling alignment, distribution, and spacing.

MVC (Model-View-Controller)

An architectural pattern that separates an application into three components: data (Model), interface (View), and logic (Controller).

A technique for making asynchronous HTTP requests from a web page without reloading the entire page.

View All Web Development Terms →