AI solution for JavaScript Quiz on BFE.dev
104. Inheritance

The code below outputs:

a
undefined
c
a
b
c

Explanation:

• a.a outputs "a", since a is an instance of class A and has a property a assigned the value "a".
• a.b outputs "undefined", since a is an instance of class A and does not have a property b.
• a.c outputs "c", since c is assigned as a property of the prototype of class A, and a is an instance of A.
• b.a outputs "a", since b is an instance of class B, which extends class A, and thus inherits the a property.
• b.b outputs "b", since b has its own property b assigned the value "b".
• b.c outputs "c", since c is assigned as a property of the prototype of class A, and class B inherits from class A.