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

Sam Men
PLUS
Sam Men
Courses Plus Student 1,067 Points
Posted by Sam Men
Sam Men
Courses Plus Student 1,067 Points

Imagine you have 10 <div> tags on a web page. Each div is 190 pixels wide. Using the two variables in this script, creat

Imagine you have 10 <div> tags on a web page. Each div is 190 pixels wide. Using the two variables in this script, create a new variable named totalWidth that multiplies the width by the numOfDivs variable. Because the width variable is a string, you'll need to use a JavaScript function to retrieve the number value.

app.js 
var width = '190px';
var numOfDivs = 10;
var totalWidth = 'parseInt(width)' * parseInt('numOfDivs');
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>

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Don't enclose function calls or variable names in parentheses. That creates string literals instead of performing the function and/or retrieving the values you need.

Also, you don't need to perform a "parseInt" on "numOfDivs" since it is already a number.