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Learn TypeScript: The Complete Course for Beginners

Gain insights into TypeScript's core concepts, from basics to advanced type checking and iterators. Learn about static typing and JS library support through practical, hands-on experience.

4.5

114 Lessons

12h

Join 2.9 million developers at

Learning Roadmap

114 Lessons2 Quizzes

Introduction

Get familiar with TypeScript's basics, its philosophy, benefits, and practical use cases.

What is TypeScript?

TypeScript Philosophy

Why Use TypeScript?

Using TypeScript

The Basics of Variables

Get started with TypeScript variables, scoping, and type declarations, emphasizing best practices.

Declaring a Variable

Declaring Types in Untyped Code

Hoisting Variables

TypeScript Scope is JavaScript Scope

Switch Scope

The Multiple Methods of Declaring a String

String-Tagged Templates

What is a Number in TypeScript?

Booleans, Functions, and Objects

Avoiding `any` at Any Time Possible

Mutable and Immutable Arrays

Undefined Versus Null

Returning nothing with Void

The Primitive Type never

Unknown: A Better any

Literal Type to Narrow Primitive Type

Symbol and Unique Symbol

Casting to Change Type

Comment

Examine TypeScript's commenting syntax, including the distinction of /*! for preserved comments.

TypeScript's Comments are like JavaScript's with One Exception

Enum

4 Lessons

Enhance your skills in leveraging TypeScript enums, improving type safety, performance, and functionality.

Generic Type

9 Lessons

Deepen your knowledge of generics in TypeScript, enhancing type safety and code reusability.

Functions

10 Lessons

Tackle TypeScript functions with strong signatures, fat arrow syntax, return types, and overloads.

Mapped Type

11 Lessons

Master the steps to using mapped types in TypeScript to enhance code efficiency.

Objects

4 Lessons

Step through TypeScript's object types, including curly braces, class instantiation, and case distinctions.

Index Signature

4 Lessons

Unpack the core of TypeScript index signatures, including dynamic access, type restrictions, and enhanced key definitions.

10.

Variables Advanced

12 Lessons

Work your way through advanced TypeScript concepts like type intersections, unions, and conditional types.

11.

Exception

4 Lessons

Break down complex ideas on managing synchronous and asynchronous exceptions and using assertion functions.

12.

Alias

5 Lessons

Take a closer look at using aliases to simplify and enhance TypeScript's structural typing.

13.

Type Checking

9 Lessons

Focus on TypeScript's type checking mechanisms, enhancing code reliability and type safety with various operators and strategies.

14.

Iterators

3 Lessons

Master the steps to iterate objects and arrays using loops, standard methods, and generators.

15.

Manipulating Objects and Array

7 Lessons

Step through manipulating objects and arrays with TypeScript's typing, destructuring, and operators.

16.

Sharing Code

7 Lessons

Discover the logic behind sharing code using namespaces, modules, lazy loading, and definition files in TypeScript.

17.

Conclusion

2 Lessons

Go hands-on with TypeScript basics, type safety, and advanced concepts for robust applications.

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Developed by MAANG Engineers

ABOUT THIS COURSE

If you’re looking to move beyond vanilla JavaScript and take your skills to the next level, then you’ve come to the right place. TypeScript is an in-demand language that sits on top of JavaScript. This means you can do everything you can in JavaScript with TypeScript, but also enjoy countless other perks including support for JS libraries, NPM, static typing, and much more. In this course, you’ll start from the beginning and work your way up to more advanced concepts like type checking, iterators, and manipulating objects and arrays. You'll get a chance to get your hands dirty with plenty of real practice along the way. For JavaScript developers, TypeScript is a must-know language, not only for today but also for years to come. Don't miss out.

ABOUT THE AUTHOR

Patrick Desjardins

I am working at Netflix, ex-Microsoft. 20 years of experience in web development.

Learn more about Patrick

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