Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Basics (Retired) Storing and Tracking Information with Variables Using String Methods

Cheri Watts
Cheri Watts
658 Points

Javascript Concatenation of variable with .toUpperCase();

Can you tell me where I went wrong?

app.js
var id = "23188xtr";
var lastName = "Smith";

var userName
userName = id.toUpperCase();
userName = "#"+ lastname.toUpperCase();
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

Dewane Mutunga
PLUS
Dewane Mutunga
Courses Plus Student 3,771 Points

You forgot to add id.toUpperCase to the concatenated string and remove the double quote from lastName.toUpperCase. It should look like this...

var userName
userName = id.toUpperCase();
userName = id.toUpperCase() + "#" + lastName.toUpperCase();
Cheri Watts
Cheri Watts
658 Points

Dear Dewane,

Thank you. Thank you. Thank you.

Your help was helpful.

Cheri

While Dewane's answer is correct you don't need to create an additional userName. View Below.

var userName;
userName = id.toUpperCase() + "#" + lastName.toUpperCase();

I hope this helps.

Cheri Watts
Cheri Watts
658 Points

Dear Chyno,

Thank you, immensely!

Simplification rocks!

Cheri

Absolutely! You could take it a step further if you like to keep it D.R.Y. and simple.

var userName = (id + "#" + lastName).toUpperCase();
Cheri Watts
Cheri Watts
658 Points

Dear Chyno,

What is D.R.Y.?

Cheri aka "The Newb"

D.R.Y. is an acronym for Don't Repeat Yourself =)