Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Prototype chain

Don't understand why my code is not working ?

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

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


//Teacher.prototype = Object.create(Person.prototype)

1 Answer

Adam Beer
Adam Beer
11,314 Points

You are so close, just delete the first and second "this" in the "Teacher()" function.