TypeScript Coach

An interactive handbook for modern developers.

TypeScript makes it easy to build great software. This free guide helps anyone learn the TypeScript programming language, with thousands of code examples that run in your web browser.

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Handbook

Basics

The fundamental ideas of TypeScript, and how it relates to JavaScript.

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Branching

Conditionally executing instructions based on data.

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Functions

Reusable blocks of code that can transform inputs into outputs.

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Arrays

A sequence of values.

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Strings

A deep dive into how strings are manipulated, encoded, decoded, and typed.

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Types

A detailed look at how the TypeScript type system works.

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Objects

The most common way to organize information and represent external concepts.

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Maps and Sets

Built-in data structures for storing collections and mappings.

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Promises

Reusable blocks of code that can transform inputs into outputs.

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Generic Types

Methods for dynamically constructing types from other types.

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Advanced Types

Advanced features of the type system, like unions, intersections, and tuples.

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Utility Types

Facilitate common type transformations with a variety of built-in types.

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Classes

Classes are a template for creating objects.

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Modules

Modules.

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Namespaces

Namespaces.

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Decorators

A powerful experimental feature.

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