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AI solution for JavaScript Quiz on BFE.dev
58. inherit getter setter

The code outputs the following:

0
1
0
2
2

Explanation:

  • The code defines two classes A and B that extend A, and defines another class C that also extends A but overrides the foo getter of its prototype.
  • A defines a getter and setter for a property called foo that simply sets or gets the value of a global variable val.
  • B does not override the foo getter or setter of its prototype, so it inherits them from A. When b.foo is accessed, it returns the current value of val, which is initially set to 0. When b.foo is set to 1, it updates the value of val to 1.
  • C overrides the foo getter of its prototype to always return the current value of val, regardless of its input. When c.foo is accessed, it also returns the initial value of val (0).
  • When c.foo is set to 2, it does not update the value of val in the prototype, but creates a new property foo on the instance c that shadows the prototype property. Therefore, when c.foo is accessed again, it returns the shadowed value of 2, while b.foo still returns the current value of val (2) in the prototype.