TypeScript is a superset (or extension) of JavaScript, created after developers found new ways to improve the language. Today, TypeScript is one of the most popular programming languages used in web development.

What does TypeScript do?

As an extension of JavaScript, TypeScript can do almost everything JavaScript can — with added functionalities that make it easier to build bigger, more complex programs. For example, its type annotation feature helps you find bugs and errors, which is helpful when you're working with thousands of lines of code.

Is TypeScript a language?

Yes! Similar to how C++ and C# are programming languages based on C, <a href="https://www.codecademy.com/resources/blog/typescript-vs-javascript/">TypeScript is an upgrade to JavaScript</a> that adds helpful features that streamline development.

What kind of jobs use TypeScript?

Like JavaScript, TypeScript is a popular tool for Web Developers. Front-End Developers use it to add interactive features to web pages, and Back-End Developers can use it with frameworks like Node.js. It can also be helpful if you're considering a career in game or mobile development, or interested in virtual or augmented reality.

What else should I study if I am learning TypeScript?

TypeScript is a superset (or extension) of JavaScript, so learning JavaScript is the first step. If you want to learn how to build websites, you'll also want to learn HTML and CSS — along with frameworks like Vue and Angular. If you're more interested in back-end development, consider learning Node.js.

Free

Course

Learn TypeScript

Learn TypeScript, a superset of JavaScript that adds types to make the language scale!

This course includes

135,611 learners enrolled

This course includes

Skill level
Intermediate
Time to complete
Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary

10 hours
Projects
7
Prerequisites
1 course

We suggest you complete the following courses before you get started with Learn TypeScript:
Learn JavaScript

About this course

Elevate your JavaScript skills by learning TypeScript, a language designed to create more reliable and maintainable code. TypeScript enhances JavaScript with its type system, helping you develop error-free code efficiently. Explore TypeScript to boost your career prospects and streamline your development process.

Skills you'll gain

Applying TypeScript’s type system
Structuring and organizing code effectively
Reducing errors with TypeScript’s linter
Streamlining workflows for faster coding

Syllabus

7 lessons • 7 projects • 7 quizzes

Certificate of completion available with Plus or Pro
Earn a certificate of completion and showcase your accomplishment on your resume or LinkedIn.

The platform

Hands-on learning

Animated GIF of an AI provided error explanation within Codecademy's learning environment

An AI-generated hint within the instructions of a Codecademy project

Animated GIF of Codecademy's Job Readiness Checker tool generating a compatibility report for a senior software engineer role

Animated GIF of building a phone screen interview using Codecademy's Interview Simulator

A fill-in-the-blank JavaScript question in a Codecademy assessment

Explore features

Projects in this course

Meet the creator of the course

Meet the full team

Kenny Lin

Software Engineer at Codecademy

Kenny is the Domain Manager for the Web Development Domain at Codecademy. He contributed to a wide range of courses and paths at Codecademy, including JavaScript, Bootstrap, Handlebars, Phaser.js, Go, Swift, TypeScript, and Lua.

Meet the full team

Earn a certificate of completion

Show your network you've done the work by earning a certificate of completion for each course or path you finish.

Show proofReceive a certificate that demonstrates you've completed a course or path.
Build a collectionThe more courses and paths you complete, the more certificates you collect.
Share with your networkEasily add certificates of completion to your LinkedIn profile to share your accomplishments.