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

Posted by Masa Mune
Masa Mune
Courses Plus Student 4,794 Points

hi my program is not working. the correct answer it not increase.

i cant figure out why mine is not working, plz help.

https://teamtreehouse.com/workspaces/28853412

Balazs Peak
Balazs Peak
46,160 Points
Balazs Peak
Balazs Peak
46,160 Points

Sorry, your link is unreachable :(

3 Answers

Balazs Peak
Balazs Peak
46,160 Points
Balazs Peak
Balazs Peak
46,160 Points

I've noticed one part of this code which is possibly causing error.

The for loop's repeater variable needs to be declared ("var" keyword?), at least in languages that I'm aware of.

NOT

for (i=0; i< data.length;...... etc

BUT

for (var i=0; i< data.length;...... etc

Masa Mune
PLUS
Masa Mune
Courses Plus Student 4,794 Points
Masa Mune
Masa Mune
Courses Plus Student 4,794 Points

i still can open this . here is my code:

var corectAnswer= 0; var response; var answer; var question; var resut;

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

var data = [ ['1+1','2'], ['2+3','5'], ['4x1','4'], ['2+4','6']
]

for (i=0; i< data.length; i+=1) {

// pull the array out
question = data[i][0]; answer = data[i][1]; response = parseInt(prompt(question));

//cheack correct answer if (response === answer) { corectAnswer += 1; }
}

resut= "Number of correct answer: " + corectAnswer; print(resut);

Alex Fourie
PLUS
Alex Fourie
Courses Plus Student 1,611 Points
Alex Fourie
Alex Fourie
Courses Plus Student 1,611 Points

Hi all,

I was also having trouble with this challenge (part 1). I found myself messing around with the code and found a much better and simpler way to execute this challenge (for me at least). This is for anyone who is having trouble as I did. Check the link below; https://teamtreehouse.com/workspaces/30078332#

If there are any problems, let me know.