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Learn TypeScript: The Complete Course for Beginners

Course Overview

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 co...

How You'll Learn

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built-in assessments let you test your skills. Completion certificates let you show them off.

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built-in assessments let you test your skills. Completion certificates let you show them off.

Course Contents

1. Introduction

What is TypeScript?

TypeScript Philosophy

Why Use TypeScript?

Using TypeScript

2. The Basics of Variables

Declaring a Variable

Declaring Types in Untyped Code

Hoisting Variables

TypeScript Scope is JavaScript 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

3. Comment

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

4. Enum

Enum With and Without Values

Accessing Enum Values

Speeding Up Enum

Merging and Adding Functionality to Enum

5. Generic Type

Generic and Classes

Generic Constraint

Generic with Construction Functions

Generic Outside Class

Generic Comparison

Generic Inference

Generic Default

Generic and keyof

6. Functions

Named and Anonymous Functions

Function and Inference Variables

Generic Return Type, Optional Parameter and Default Value

Functions in Classes

Function Relationship with "this"

Function and Inference Return Types

Overload Functions to Enrich your Definition

String Literal and Overload Function

Types of Function Headers

7. Mapped Type

Definition and Usages

Immutable Data with Readonly

Custom Mapped Type

8. Objects

Introduction to TypeScript's Many Objects

The Curly Braces Object

Lowercase vs UpperCase Object

9. Index Signature

Definitions and Usages

String or Number Indexes

Members of the Same Type

Keys with Constants and Symbols

10. Variables Advanced

Intersecting with Types, Interfaces, and Generics

Literal Type, Narrowing, and Const

Union with Types and Tagged Union

Const Assertion for Literal Values

Tuple For Type and Length Arrays

Casting to Change Type

keyof to Validate a Member's Name

On How TypeScript Handles Variance

How to Narrow a Type with the in Operator

What is a Conditional Type?

TypeScript Inference

Set and Dictionary

11. Exception

Creating an Exception

Catching Synchronous Exceptions

Catching Asynchronous Exceptions

Assertion Functions

12. Alias

Aliases with the Structural Behavior of TypeScript

Aliases with Type

Aliases with Generic Types and Recursivity

The Differences between Type Aliases and Interfaces

13. Type Checking

Comparing Variables

Type Checking with typeof

Type Checking with instanceof

Type Checking and Interface with a Discriminator

Type Checking with Intersections

Type Checking an Interface with Custom User-Defined Type Guard

Optional Chaining and Optional Element Access

Nullish Coalescing

Assertion Functions

14. Iterators

Iterating an Object's Keys with For-In

Iterating an Object with Standard For/While

Iterating and the Asynchronous Loop

15. Manipulating Objects and Array

Typing an Array

Array with a Skipped Value

Destructuring an Array

Destructuring an Object

The Spread Operator and Arrays

The Spread Operator and Objects

The Bang Operator

16. Sharing Code

Lazy Loading Module

Import Shortcuts

Definition Files and Global Definition Files

Definition File Locations

17. Conclusion

Part of the TypeScript Learning Path

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Learn TypeScript for Front-End Developers

Adapt your current JavaScript knowledge to master TypeScript and optimize your front-end projects.

3 Modules

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COURSE BY:

Patrick Desjardins

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