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

Posted by Brenda Bouchard
Brenda Bouchard
5,028 Points

Numbers and Strings

Challenge 1 Task 1

I am using parseInt but I cannot figure out what goes in the ()

app.js 
var width = '190px';
var numOfDivs = 10;
var totalWidth = width * numOfDivs;
parseInt('1900');
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

Adam Mould
Adam Mould
5,458 Points
Adam Mould
Adam Mould
5,458 Points

Hi Brenda,

With parseInt() you parse a string and it returns an integer.

In this scenario you will want to use parseInt() with the string variable width, to return an integer that you can then use to multiple with the variable numOfDivs.

An example, using your code:

var width = '190px';
var numOfDivs = 10;
var widthInt = parseInt(width); //Will convert the string '190px' to an integer '190'
var totalWidth = widthInt * numOfDivs; //Will multiple the integers together
Daniel Botta
Daniel Botta
17,956 Points
Daniel Botta
Daniel Botta
17,956 Points

If you want to save a line of code, you could also just do this:

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