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JavaScript JavaScript Basics (Retired) Working With Numbers Numbers and Strings

Posted by Haardik Gupta
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Haardik Gupta
Full Stack JavaScript Techdegree Student 5,459 Points

what is wrong with the code

instructions: 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;
parseInt(width);
var totalWidth = width * 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
231,268 Points
Steven Parker
Steven Parker
231,268 Points

You've got the right idea, but the "parseInt" function returns the numeric value but it doesn't change the argument. So you can either assign it to a variable or just use it directly in the expression:

var totalWidth = parseInt(width) * numOfDivs;