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JavaScript Object-Oriented JavaScript (2015) Prototypal Inheritance Setting Up the Prototype Chain

Khaleel Yusuf
Khaleel Yusuf
15,208 Points
Posted by Khaleel Yusuf
Khaleel Yusuf
15,208 Points

I need help with this question. I don't understand.

You're going to modify the Teacher code to inherit from the Person. First, in the Teacher constructor function, call the Person constructor, using the call method and pass in the common attribute. Where is the Teacher constructor function? Do I have to make it? I don't know what to do.

person.js 
function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

Person.prototype.fullName = function() {
 return this.firstName + " " + this.lastName; 
};
teacher.js 
function Teacher(firstName, lastName, roomNumber) {
  this.firstName = firstName;
  this.lastName = lastName;
  this.room = roomNumber;
}

1 Answer

Elena Rumiantseva
Elena Rumiantseva
9,911 Points
Elena Rumiantseva
Elena Rumiantseva
9,911 Points

function Teacher(firstName, lastName, roomNumber) { Person.call (this, firstName, lastName); this.room = roomNumber; } Don't forget to delete the rest of the lines inside the Teacher function