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

Killeon Patterson
Killeon Patterson
18,425 Points
Posted by Killeon Patterson
Killeon Patterson
18,425 Points

What is the correct syntax for this challenge?

What is the correct syntax for this challenge?

app.js 
var width = '190px';
var numOfDivs = '10';
var totalWidth = parseFloat('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>

2 Answers

Daniel Newman
Daniel Newman
Courses Plus Student 10,715 Points

Mischa Yartsev right. If you put a VARIABLE in quotes - it become a string. So your syntax

parseFloat('width')

similar to

var width = "width";
parseFloat(width);

and it will return NaN.

Mischa Yartsev
Mischa Yartsev
20,562 Points
Mischa Yartsev
Mischa Yartsev
20,562 Points

HI Killeon Patterson

Almost everything is correct, except for few quotes :) You don't have to put a number of numOfDivs variable in a quotes and a width variable in a parseFloat function.

var width = '190px';
var numOfDivs = 10;
var totalWidth = parseFloat(width) * numOfDivs;