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Free course16 lessons5 modulesSelf-paced

JavaScript & TypeScript

Learn JavaScript foundations, async code and browser interaction, then strict TypeScript, testing and a complete study-planner project.

Your learning path

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Explore the syllabus

1JavaScript foundations4 lessons+

Runtime and setup
Values and control flow
Functions and closures
Collections

2Objects and reliable modules3 lessons+

this and classes
Modules and tooling
Errors and validation

3Async code and the browser3 lessons+

Promises and event loop
Fetch and cancellation
DOM and events

4TypeScript contracts4 lessons+

TypeScript setup
Unions and narrowing
Interfaces and generics
Type design and modules

5Test and build2 lessons+

Testing and debugging
Typed planner capstone

What you’ll learn

Explain scope, closures, object identity and module boundaries
Handle promises, HTTP errors, cancellation and accessible DOM updates
Use strict TypeScript, runtime validation, unions and generics
Build and test a typed browser application