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

Darien Kim
Darien Kim
3,126 Points

Array questions show up all together.help.

var questions = [ ['what is 4+8?', 12], ['what is 4-1?', 3], ['what is 1+1?', 2] ];

var correctAnswer = 0; var question; var answer; var response; var html;

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

for (var i = 0; i<questions.length; i+=1) { question = questions[i][0]; answer = questions[i][1]; response = parseInt(prompt(questions)); response = parseInt(response); }

the questions show up all together. I can't find error inside code.

2 Answers

Gavin Ralston
Gavin Ralston
28,770 Points
response = parseInt(prompt(questions))

You're sending the questions array to the prompt function, so it'll print them all.

That's at a glance, and since the code wasn't wrapped in markdown it's hard to read, but that's my best guess.

Hope that helps!

Darien Kim
Darien Kim
3,126 Points

ahh. Thanks. I should've taken away the "s" off from the questions!

Btw, it's much faster to just wrap each number in a set of quotes so that they're strings instead of numbers because parsing the integer from each question is a slower process than comparing strings. And, without parsing for an integer, you can add questions that don't exclusively involve numbers, as well.

var questions = [ 
['what is 4+8?', '12'], 
['what is 4-1?', '3'], 
['what is 1+1?', '2'], 
['Can we now add varying questions to this quiz?', 'yes'] 
];

var correctAnswer = 0; 
var question; 
var answer; 
var response; 
var html;

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

for (var i = 0; i<questions.length; i+=1) { 
question = questions[i][0]; 
answer = questions[i][1]; 
response = prompt(question); 
}