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 Basics (Retired) Working With Numbers Numbers and Strings

davide totaro
davide totaro
5,559 Points
Posted by davide totaro
davide totaro
5,559 Points

Let's assume we have 10 <div> tags on a page. Each is 190 pixels wide. Using the two variables in this script, create a

I don't understand why isn't working

app.js 
var width = '190px';
var numOfDivs = 10;
var totalWidth = numOFDivs * parseInt(width);
index.html 
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script src="app.js"></script>
</body>
</html>
Edison Jimenez
Edison Jimenez
2,670 Points
Edison Jimenez
Edison Jimenez
2,670 Points

Could you please complete your question. In my opinion, var declarations in your js are fine, buy you're doing nothing with them.

2 Answers

Rich Bagley
Rich Bagley
25,869 Points
Rich Bagley
Rich Bagley
25,869 Points

Hi Davide,

The casing of numOfDivs on the following line is the issue:

var totalWidth = numOFDivs * parseInt(width);

The variable is set as:

var numOfDivs = 10;

so the line below should be:

var totalWidth = numOfDivs * parseInt(width);

Notice the lower case F.

Hope that helps.

-Rich

August Oliver
August Oliver
5,933 Points
August Oliver
August Oliver
5,933 Points

Correct answer: var totalWidth = numOfDivs * parseInt(width);