var Person = function (name) {

  this.name = name;

};

​

function Student(name) {

  Person.call(this, name);

}

​

Student.prototype.constructor = Student;

​

function Teacher(name) {

  Person.call(this, name);

}

​

Teacher.prototype.constructor = Teacher;

​

var student = new Student('Anakin');

var teacher = new Teacher('Obi-Wan');

​

console.clear();

console.log(student.name

            + ' is the '

            + String(student.constructor.name));

​

console.log(teacher.name

            + ' is the '

            + String(teacher.constructor.name));