Typescript-Class __typescript

Inheritance of classes: object-oriented patterns
Super: Keywords

Class Animal  {
  name:string;
  Constructor (thename:string) {
    this.name = thename;
  }
  Move (Distanceinmeters:number = 0) {
    console.log (' ${this.name} moved ${distanceinmeters}m. ');
  }

Class  Snack extends Animal {

  Constructor (name:string) {
    super (name);//Call constructor of parent class
  }
  // Overrides the parent class's method move
  (Distanceinmeters = 5) {
    console.log ("slithering ...");
    Super.move (distanceinmeters);
  }

Class Horse extends Animal {

  Constructor (name:string) {
    super (name);
  }

  Move (Distanceinmeters =) {
    Console.log ("galloping");
    Super.move (distanceinmeters);
  }

Let Sam = new Snack ("Sammy the Python");
Let Tom:animal = new Horse ("Tommy the Palomino");

Sam.move ();
Tom.move ();

Modifiers: (in Typescript, members are default to public)
Public private: can only be accessed in the life of his class protect: readonly: Read-only properties must be initialized in a declaration or in a constructor in a derived class