TypeScript Tutorial

21 tutorials

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#1 Introduction & Setup

What is TypeScript, why use it, and how to set up your development environment.

#2 Compiling TypeScript

Learn how to compile TypeScript files into JavaScript and set up a watch mode.

#3 Type Basics

Core TypeScript types — string, number, boolean — and how type inference works.

#4 Objects & Arrays

Working with typed arrays and objects in TypeScript.

#5 Explicit Types

How to explicitly declare types for variables, arrays, objects, and union types.

#6 Dynamic (any) Types

The 'any' type — what it is, when to use it, and why to avoid it.

#7 Better Workflow & tsconfig

Set up tsconfig.json for a professional TypeScript workflow with rootDir and outDir.

#8 Function Basics

Typed function parameters, return types, and optional parameters in TypeScript.

#9 Type Aliases

Create reusable type aliases to simplify complex types and improve code readability.

#10 Function Signatures

Define function signatures to describe the shape of a function — its parameters and return type.

#11 The DOM & Type Casting

Interacting with the DOM in TypeScript — element types, type casting, and event handling.

#12 Classes

Object-oriented programming with TypeScript classes — constructors, methods, and properties.