es6-Class.js

class Person {
  constructor(name = '', age = 0) {
    this.name = name;
    this.age = age;
  }
  
  getName() {
    return this.name;
  }
}

class Employee extends person {
  constructor(name, age, type) {
    super(name, age);
    this.type = type;
  }
}

let employee = new Employee('Bob', 32, 'developer');