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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today. # no pop up window shows up??

```var questions = [
['How many states are in the United States?', 50],
['How many continents are there?', 7],
['How many legs does an insect have?', 6]
];
var question;
var response;
var correct=[];
var wrong=[];

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

function buildList(arr){
var listHtml="<ol>";
for var i=0; i<arr.length; i+=1{
listHtml+="<li>" + arr[i] +"</li>";
}
listHtml+="</ol>";
return listHtml;
}

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

html = "You got " + correctAnswers + " question(s) right."
print(html);
html+="<h2> you got this questions correct:</h2>";
html+= buildList(correct);
```

you have some issues with your buildList function. I am not sure what you are trying to accomplish in it, but you have an extra ":

``` var listHtml=""; for var i=0; i"
```

also that is not the syntax for a for loop:

```var i=0; i" + arr[i] +""; }
```

the loop should be something like this:

```for(var i=0; i < arr.length; i++) {
//do stuff
}
```

Hey Britta,

There were some issues with your code. As Jason pointed out, your for statement needed slightly redone. After the edit, you only needed parenthesis surrounding `var i=0; i<arr.length; i+=1`.

Also, you should not use the function `print()` because it is much slower than just calling `document.write()` itself and it causes issues with Safari because `print()` is a function for printing information from a page in Safari.

I also redid the bottom HTML and added a `wrongAnswers` variable, so that you can track wrong answers as well as right ones.

```var questions = [
['How many states are in the United States?', 50],
['How many continents are there?', 7],
['How many legs does an insect have?', 6]
];
var correct=[], wrong = [];

function buildList(arr){
var listHtml="<ol>";
for (var i=0; i<arr.length; i+=1){
listHtml+="<li>" + arr[i] +"</li>";
}
listHtml+="</ol>";
return listHtml;
}

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