JavaScript Quiz Question #4: Prototypal Inheritance

In this question, we have a Dog constructor function. Our dog obviously knows the speak command. What gets logged in the following example when we ask Pogo to speak?

function Dog(name) {
  this.name = name;
  this.speak = function() {
    return 'woof';
  };
}

const dog = new Dog('Pogo');

Dog.prototype.speak = function() {
  return 'arf';
};

console.log(dog.speak());

A) woof
B) arf

Put your answer in the comments!

Comments

[rohit raut]

Woof

[Célsio Capapelo]

woof

[pris stratton]

It should be “woof” because dog.speak will get called and dog.proto.speak will never be searched for.

[Mahtab]

Error

[Sagarchawla076]

woof