Using Static Properties To Have Them At Class Level

[!INFO]-
topic: 🦒 TypeScript
links:

• Interfaces in TypeScript
• Common types in TypeScript

source: TypeScript course by the native web
tags: #permanent-note #published

Last Modified: =dateformat(this.file.mtime, "MMM. dd, yyyy - HH:mm")

To access properties or functions from class level, you have to define them as static.

class Dog {
  public readonly name: string;

  public static numberOfDogs: number = 0;

  private constructor (name: string) {
    Dog.numberOfDogs += 1;
    this.name = name;
  }

  public static bringToLife (name: string): Dog {
    return new Dog(name);
  }

  public bark (): void {
    console.log('Woof woof!');
  }
}

const alice = Dog.bringToLife('Alice');
console.log(alice.name);

const malin = Dog.bringToLife('Malin');
console.log(malin.name);

console.log(Dog.numberOfDogs);