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Start your free trialRyan Libed
7,386 PointsHow does one function access another functions prototype?
I'm confused on how the guess method from the Quiz prototype is able to call the isCorrectAnswer() on the Question prototype?
Quiz.prototype.guess = function (answer) {
if (this.getCurrentQuestion().isCorrectAnswer(answer)) {
return this.score++;
}
return this.currentQuestionIndex++;
}
Question.prototype.isCorrectAnswer = function (answer) {
return this.choice === answer;
}
1 Answer
Michael Hulet
47,912 PointsIt's not calling the method on Question
's prototype
, but instead on an instance of the Question
object. The code isn't included in your question, so I'm guessing based on the names, but I'm guessing that Quiz
also has a method named getCurrentQuestion
that return
s an instance of the Question
object. It immediately calls isCorrectAnswer
on that object to check if the passed-in answer
is the correct answer to the current question. That all being said, it's important to note that every property of an object is accessible to every other object/function of the same or a more specific scope, so you can always read/write the prototype
of any object you can access
Ryan Libed
7,386 PointsRyan Libed
7,386 PointsThank you!