text: var Student = (function () {
      function Student(firstName, middleInitial, lastName) {
          this.firstName = firstName;
          this.middleInitial = middleInitial;
          this.lastName = lastName;
          this.fullName = firstName + " " + middleInitial + " " + lastName;
      }
      return Student;
  }());
  function greeter(person) {
      return "Hello, " + person.firstName + " " + person.lastName;
  }
  var user = new Student("Andri", "M.", "Indrawan");
  document.body.innerHTML = greeter(user);
  