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

Posted by Shandale Shelton
Shandale Shelton
7,424 Points

Numbers and Strings

Hi, The error that Im getting is I am not Multiplying the width by the number of divs. also the error message NaN.

app.js 
var width = '190px';
parseInt(width);
var numOfDivs = 10;
var  totalWidth = numOfDivs * 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>
Marius Posogan
Marius Posogan
11,184 Points

var width = '190px';

var numOfDivs = 10;

var totalWidth = numOfDivs * parseInt(width);

When you use "var totalWidth = numOfDivs * width;", width is still a string.

When you use parseInt(width) on your line 2 it doesn't assign that value to any variable.

Shandale Shelton
Shandale Shelton
7,424 Points

Thank you Sir!

1 Answer

Adam Beer
Adam Beer
11,314 Points

Hi Shandale! Use parseInt in your new variable the totalWidth. You didn't save the parseInt value in the variable. So this value is NaN.

var totalWidth = parseInt(width) * numOfDivs;
Shandale Shelton
Shandale Shelton
7,424 Points

Thank you sir, that worked!

Adam Beer
Adam Beer
11,314 Points

Cheers! Happy coding! :)