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Learn TypeScript

Turn your shaky JavaScript into type safe code with a deep understanding of TypeScript.

Browse Lessons (read-only)

What will you learn?

Master TypeScript from start to finish in this immersive, hands-on course. TypeScript's meteoric rise in popularity, both on the frontend and backend, has brought demand for TypeScript developers to among the highest in the industry. In this course you'll learn all the fundamentals of the language while solving real-world type challenges each step of the way.

Chapter List

1
Types
Learn the basic types in TypeScript and the syntax for using them
2
Functions
Learn how to write type-safe functions with TypeScript's robust type system.
3
Unions
Learn how to declare and use union types in TypeScript to allow variables to hold multiple types
4
Arrays
Learn to work with typed arrays in TypeScript, including syntax, generics, unions and type inference
5
Objects
Learn how to work with object types in TypeScript
6
Tuples
Learn how to use tuples in TypeScript
7
Intersections
Learn the basics of intersections in TypeScript
8
Interfaces
Discover the core principles of interfaces in TypeScript
9
Enums
Practice using enums in TypeScript
10
Type Narrowing
Learn how TypeScript uses type narrowing to infer more about your code.
11
Classes
Learn about TypeScript's class features, including class syntax, access modifiers, inheritance, interfaces, and more.
12
Utility Types
Learn about some utility types that can come in handy in TypeScript.
13
Generics
Learn how to create reusable components with type parameters in TypeScript
14
Conditional Types
Learn how to create types that react dynamically to other types using TypeScript's powerful conditional type system.
15
Local Development
Learn how to set up and optimize your TypeScript development environment.

Join 15,076 students in the Learn TypeScript course

Read reviews of their learning experiences

I enjoyed the course and this will help me get started on React and Frontend. The part where all the custom types and interfaces in the end got real confusing and I may need to revise those again whenever I would need em.

(4/5)
Nikhil Kapila profile image

Nikhil Kapila

sitting somewhere in front of a computer

Good course!

(4/5)
Tùng Nè profile image

Tùng Nè

Vietnam

A good course

(5/5)
zechuan Wang profile image

zechuan Wang

Shanghai Institute of Technology

Firehose of vital TS concepts for writing good code

(4/5)
Alex  profile image

Alex

United Kingdom

A great way of undertanding safety and the benefits of static type checking for a consistent systematic type usage among the code to provide a clean and safe javascript code for runtime.

(5/5)
Jusuf Osmanovic profile image

Jusuf Osmanovic

Finland

Great resource for learning Typescript and what it has to offer.

(4/5)
OK-Kokei  profile image

OK-Kokei

Ireland

Great content and introduction to TypeScript. I love the random humor as well. I took away one star because I wish there were more hard challenges. Learning comes from friction!

(4/5)
Markofka  profile image

Markofka

United States

great typescript course

(4/5)
Massimo  profile image

Massimo

Italy

Good.

(4/5)
Samuel Robinson profile image

Samuel Robinson

Australia

Showing 1-9 of 157

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Mediocrity doesn't cut it anymore

The only way to become a great developer is to write a lot of code

Avoid tutorial hell

by writing a ton of code

Stay motivated with

a game-like curriculum

Build portfolio projects

to prove your skills

Delve deeper

into foundational concepts

Learn flexibly online

without interrupting your life

For 1% the price of college

to minimize your financial risk

Frequently asked Questions

Got questions? We've got answers

Yes! It's free to create an account and start learning. You'll get all the immersive and interactive features for free for a few chapters. After that, if you still haven't paid for a membership, you'll be in read-only (content only) mode.