js-002.js

class Human {

  constructor(name) {
    this.name = name;
    this.race = 'Terran';
  }

  set name(value) {
    if (typeof value !== 'string') {
      throw new TypeError('Name value was not a string');
    }
    this._name = value
      .split(' ')
      .map(function (item) {
        return item[0].toUpperCase() + item.substring(1);
      })
      .join(' ');
  }

  get name() {
    throw new Error('This value can not be read by this way');
  }

  getName() {
    return this._name;
  }

}

class Man extends Human {
  constructor(name) {
    super(name);
    this.gender = 'Male';
  }
}

const instanceHuman = new Human('chiro hiro');
console.log('My name is:', instanceHuman.getName(), 'Race:', instanceHuman.race);

const instanceMan = new Man('Some body we used to know');
console.log('My name is:', instanceMan.getName(), 'Race:', instanceMan.race, 'Gender:', instanceMan.gender);