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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
11,313 Points

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