TypeScript is an open source programming (♦ see DEF) language intended to optimize the use of JavaScript.

Appeared in 2012, it was created by Anders Hejlsberg within the Microsoft company.

→ Let's start with very simple codes. The more you progress, page after page, the more sophisticated the scripts will be. However, you must go over 30 to 40 pages per level, before moving on to the next step...

→ In order to evaluate your codes, click on the icon on the left at the bottom of the page (gears), then choose a compiler from the list that will be open in another tab. Finally, test your work.

NOW REPRODUCE AND IMMERSE YOURSELF!

console.log('Hello world!');

function multiply(a: number, b: number) { return a * b;
}

console.log(multiply(6,8))

class NamedValue<T> { private _value: T | undefined;

 constructor(private name: string) {}

 public setValue(value: T) {
 this._value = value;
 }

 public getValue(): T | undefined {
 return this._value;
 }

 public toString(): string {
 return `${this.name}: ${this._value}`;
 }
}
 
const value = new NamedValue<number>('myNumber');

value.setValue(24);

console.log(value.toString()); // myNumber: 24