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JavaScript JavaScript Basics (Retired) Working With Numbers Doing Math

Posted by John Eyre
John Eyre
4,353 Points

why is this wrong? var profitPerUnit = 213.38 / 47;

var wholesalePrice = 5.45; var retailPrice = 9.99; var quantity = 47; var salesTotal = 9.99 * 47; var profit = 469.53 - 256.15; var profitPerUnit = 213.38 / 47;

script.js 
var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal = 9.99 * 47;
var profit = 469.53 - 256.15;
var profitPerUnit = 213.38 / 47;
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="script.js"></script>
</body>
</html>

2 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hi John,

The challenge does not want hard-coded values. In real-world applications, you will almost never use values that are hard-coded.

So instead of 

var salesTotal = 9.99 * 47;

It should be

var salesTotal = retailPrice * quantity;

Keep Coding! :) :dizzy:

John Eyre
John Eyre
4,353 Points

Yeah Thanks Jason, I figured that out not long after posting the question.

John Eyre
John Eyre
4,353 Points
John Eyre
John Eyre
4,353 Points

It threw me off a little because some were accepted as correct when I was using hard-coded values.

Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

It was probably because of what the Treehouse Code Checker was looking for. The ones that passed were probably only having the result checked, but the others may have been checking the code lines themselves. Strange, but glad you got it all figured! :) :thumbsup: