Scribble for an Appointment Manager

// calendar

class Appointment {

  constructor(dateStamp, description, id) {
    this.id = id;
    this.date = dateStamp || new Date();
    this.description = description || 'New Appointment';
  }
  
    
}

class Calendar {
  
  constructor(year) {
    this.isLeap = new Date(year, 2, 0).getDate() == 29;
    this.appointments = [];
  }
  
  getEventsByDate(m, d, y) {
    let dateStamp = new Date(y, m - 1, d);
    return this.appointments.filter(
      appointment => appointment.date.toDateString() === dateStamp.toDateString()
    );
  }
  
  getEventsByMonth(m, y) {
    let upperBound = new Date(y, m);
    let lowerBound = new Date(y - 1, m);
    return this.appointments.filter(
       appointment => appointment.date < upperBound && appointment.date >= lowerBound
    );
  }
  
  getEventsByYear(y) {
    let upperBound = new Date(y, 0, 1);
    let lowerBound = new Date(y, 11, 31);
    return this.appointments.filter(
       appointment => appointment.date < upperBound && appointment.date >= lowerBound
    );
  }
  
  getEventById(id) {
    return this.appointments.filter(appointment => appointment.id === id);
  }
  
  addEvent(m, d, y, id, desc) {
    let dateStamp = new Date(y, m - 1, d);
    return this.appointments.push(new Appointment(dateStamp, desc, id));
  }
  
}

var ChrisCalendar = new Calendar(2016);


ChrisCalendar.addEvent(1,13,2017, 'orchestra', 'Performance');
ChrisCalendar.addEvent(4,14,1978, 'birthday', 'Chris and Grandpa Birthday');
console.log(ChrisCalendar.getEventsByYear(1978));