TypeScript Tutorials

Welcome to the TypeScript Tutorials section of the Project_Nova_Website! TypeScript is a superset of JavaScript that adds static types, and it's a great way to improve the quality of your JavaScript code. Below, you will find a series of tutorials to help you get started with TypeScript.

Getting Started

Before diving into the tutorials, make sure you have Node.js and npm installed. You can download and install Node.js from here.

Install TypeScript

To install TypeScript, open your terminal and run:

npm install -g typescript

Hello World

Your first TypeScript program can be as simple as this:

function greet(name: string) {
    return "Hello, " + name + "!";
}

console.log(greet("World"));

To compile and run this code, save it as hello.ts and execute:

tsc hello.ts
node hello.js

You should see the output:

Hello, World!

Basic Types

TypeScript supports several basic types, such as string, number, boolean, and any.

String

let message: string = "Hello, TypeScript!";
console.log(message);

Number

let age: number = 30;
console.log(age);

Boolean

let isTrue: boolean = true;
console.log(isTrue);

Any

Use any when you are not sure about the type of a variable.

let mystery: any = 42;
mystery = "I am a string now!";
console.log(mystery);

Advanced Types

TypeScript also supports advanced types like arrays, tuples, enums, and interfaces.

Arrays

let numbers: number[] = [1, 2, 3];
console.log(numbers);

Tuples

let person: [string, number] = ["Alice", 25];
console.log(person);

Enums

enum Color {
    Red,
    Green,
    Blue
}

let favoriteColor = Color.Green;
console.log(favoriteColor);

Interfaces

interface Person {
    name: string;
    age: number;
}

let user: Person = {
    name: "Bob",
    age: 25
};

console.log(user);