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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 1 Solution

Posted by Pedro Ant贸nio
Pedro Ant贸nio
3,917 Points

Can't get correct question counter to go up

I've tried it a million different ways, but my correctGuesses counter just doesn't go up with each iteration of the for loop. The correct questions are added to the list, but the counter stays at 0 for some reason.

Can someone have a look into it?

var quiz = [
    ["What kind of object did Genie from Alladin come from?", "lamp"],
    ["What is Pedro's most played single player game of all time?", "monster hunter"],
    ["What programming language was this quiz written in?", "javascript"]
];

var correctGuesses = 0;

var correctQuestions = "<h1>Grats! You got " + correctGuesses + " questions correct. </h1> <h2> You got these right:</h2><ol>";

function print(message) {
    document.write(message);
}

for (var i = 0; i < quiz.length; i++) {
    var userAnswer = prompt(quiz[i][0]);
    if (userAnswer.toLowerCase() === quiz[i][1]) {
        correctGuesses++;
        correctQuestions += "<li>" + quiz[i][0] + "</li>";
    }
}

correctQuestions += "</ol>";
print(correctQuestions);

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

:point_right: Your code builds the first line of the result before asking the questions.

In fact, it's the very next line after setting correctGuesses to 0.

If you want to display the final result, you''ll need to build the result string after the score has been accumulated in the loop.

Pedro Ant贸nio
Pedro Ant贸nio
3,917 Points

Hehe yeah, I fixed it just before I checked back :)

Realized I was setting the string to have the value of 0, and only after updating the counter to be more than that, which is not retroactive :) Thank you very much for taking the time! I was stumped for over an hour and it feels so silly now!