Question

How to use abstract class in TypeScript

Answer 1

abstract class Person {
    pName: string;
    
    constructor(name: string) {
        this.pName = name;
    }

    display(): void {
        console.log('display(): void { - ' + this.pName);
    }

    abstract test(string: string): void;
}

class Employee extends Person { 
    eID: number;
    
    constructor(name: string, ID: number) { 
        super(name); 
        this.eID = ID;
    }

    test(name: string): void { 
        console.log('test(name: string): void { - ' + name)
    }
}

let emp: Person = new Employee('Professor Albus Dumbledore', 83736);
emp.display(); 

emp.test('R2D2');


    
      
   
  
      
/*
      
run:
      
"display(): void { - Professor Albus Dumbledore" 
"test(name: string): void { - R2D2" 
     
*/

 

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