TypeScriptIntermediate
Learn TypeScript for Free
Scrimba's interactive TypeScript course teaches you to add types to JavaScript. Covers type annotations, interfaces, generics, enums, tuples, and TypeScript with React.
Free course on The Odin Project
TypeScript (The Odin Project)
20 hours 4.7(4,100 reviews)Free
The Odin Project's TypeScript course teaches TypeScript (a typed superset of JavaScript) through projects. You learn types, interfaces, generics, and how TypeScript prevents bugs. The course is part of The Odin Project's free curriculum. After finishing, you can write type-safe JavaScript and understand TypeScript's benefits. The main limitation: TypeScript is a layer on top of JavaScript. You need solid JavaScript knowledge first, and real mastery comes from using it in larger projects.
TypeScript is used by 48.8% of professional developers and is one of the fastest-growing languages (source: Stack Overflow Developer Survey 2025).
About This Course
This section of The Odin Project's JavaScript path teaches TypeScript by having you retrofit type safety onto code you already wrote in vanilla JavaScript, rather than starting from a blank slate. You work through interfaces, generics, enums, and the type system's stricter checks, and come out able to add TypeScript to an existing project instead of just a fresh one. It suits learners who have already built something in JavaScript and want the next step, not total beginners who need JavaScript fundamentals first. Like the rest of Odin, there is no video or interactive editor: you read the material and do the exercises in your own local setup.
Course Details
- Platform
- The Odin Project
- Language
- TypeScript
- Level
- intermediate
- Duration
- 20h
- Certificate
- No
- Cost
- Free
Frequently Asked Questions
Do I need to learn JavaScript first?
Yes, absolutely. TypeScript is JavaScript with types. Master JavaScript before TypeScript.
Is TypeScript hard?
No, if you know JavaScript. The type system has a learning curve, but it's logical.
Should everyone use TypeScript?
For large codebases and teams, yes. For scripts or small projects, vanilla JavaScript is simpler.
After this, what's next?
Use TypeScript in real projects (React + TypeScript, Node.js + TypeScript).
How long is The Odin Project's TypeScript course?
2-3 weeks part-time, depending on pace.
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