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.

Related Terms

Progressive Enhancement

A web design strategy that starts with basic functionality for all browsers and progressively adds advanced features for capable ones.

Web Caching Strategies

Techniques for storing copies of web resources at various levels to reduce server load, bandwidth, and response times.

SEO (Search Engine Optimization)

The practice of optimizing websites to rank higher in search engine results, increasing organic traffic.

An XML file that lists all important URLs on a website, helping search engines discover and crawl content efficiently.

Content Negotiation

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

A small piece of data stored in the browser by a website to remember user preferences, login state, or tracking information.

View All Web Development Terms →