Free
CourseLearn TypeScript: Complex Types
Learn how to apply types to more complex data structures like arrays and objects in TypeScript.
Skill level
BeginnerTime to complete
Approx. 2 hoursCertificate of completion
Included with paid plansPrerequisites
None
About this course
Continue your TypeScript learning journey with Learn TypeScript: Complex Types. You’ll learn to apply types to more complex data structures like arrays and objects. You’ll also learn to define custom types and give convenient names to your types using type aliases.
Syllabus
Complex Types
Learn how to apply types to more complex data structures like arrays and objects.
The platform
Hands-on learning
Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Meet the creator of the course

Kenny Lin
Web Development Domain Manager at Codecademy Reviews from learners
- The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.ChrisCodecademy Learner @ USA
- I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.RodrigoCodecademy Learner @ UK
- Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.John-AndrewCodecademy Learner @ USA
Our learners work at
Join over 50 million learners and start Learn TypeScript: Complex Types today!
StartLooking for something else?
Related resources
- Article
The tsconfig.json File
Let's explore what the tsconfig.json file is for. - Article
Arrays
Use this article as a reference sheet for JavaScript arrays. - Article
Arrays
Like vectors, the array is a data structure used in C++ to store a sequential collection of elements. Unlike vectors, its size cannot be changed.
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Unlock additional features with a paid plan
Practice Projects
Guided projects that help you solidify the skills and concepts you're learning.Assessments
Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.Certificate of Completion
Earn a document to prove you've completed a course or path that you can share with your network.