Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

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.

Start your free trial

JavaScript JavaScript Arrays Multidimensional Arrays Improve the Quiz – One Solution

Posted by Esther AlQaisi
Esther AlQaisi
2,311 Points

Correct/Incorrect questions only displaying "NaN"

Here's a snapshot of my workspace: https://w.trhou.se/rebbdjzx0r

Not sure why the HTML values for the questions are "NaN." Any help is appreciated!

2 Answers

Jamie Moore
Jamie Moore
3,997 Points
Jamie Moore
Jamie Moore
3,997 Points

Hey Esther,

You're super close to getting this one done, but there's one tiny error which is causing confusion.

for ( let i = 0; i < arr.length; i++ ) {
    items =+ `<li>${ arr[i] }</li>`;
}

Your for loop which creates the list elements has one tiny typo. The items =+ should be items +=.

Hope this helps!

Esther AlQaisi
Esther AlQaisi
2,311 Points
Esther AlQaisi
Esther AlQaisi
2,311 Points

I knew I was overlooking some minor detail! I'm relieved. Thank you for pointing it out.