typescripttypescript1.8typescript1.5typescript1.6typescript1.4

Inheritance in TypeScript


Is that possible inheritance features in Typescript and other features like overloading, overriding etc.


Solution

  • class Animal {
        name: string;
        constructor(theName: string) { this.name = theName; }
        move(distanceInMeters: number = 0) {
            console.log(`${this.name} moved ${distanceInMeters}m.`);
        }
    }
    
    class Snake extends Animal {
        constructor(name: string) { super(name); }
        move(distanceInMeters = 5) {
            console.log("Slithering...");
            super.move(distanceInMeters);
        }
    }
    
    class Horse extends Animal {
        constructor(name: string) { super(name); }
        move(distanceInMeters = 45) {
            console.log("Galloping...");
            super.move(distanceInMeters);
        }
    }
    
    let sam = new Snake("Sammy the Python");
    let tom: Animal = new Horse("Tommy the Palomino");
    
    sam.move();
    tom.move(34);