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

Kel Kni
Kel Kni
1,577 Points
Posted by Kel Kni
Kel Kni
1,577 Points

not working, why?

var id = "23188xtr"; var lastName = "Smith";

var userName = id.toUpperCase() lastName.toUpperCase()

userName += '#' +lastName

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

var userName = id.toUpperCase()
lastName.toUpperCase()

userName += '#' +lastName
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>
Dan Barness
Dan Barness
5,346 Points

UPDATE: My comment is terribly inaccurate. Do not use.

You need to put some semicolons after your statements: 

var id = "23188xtr";
var lastName = "Smith";

var userName = id.toUpperCase();
lastName.toUpperCase();

userName += '#' +lastName;

Also, What are you trying to accomplish? I believe "+=" only works with numbers.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Actually, semicolons are optional at the end of a line (but considered a "best practice").

2 Answers

henriquegiuliani
henriquegiuliani
12,296 Points
henriquegiuliani
henriquegiuliani
12,296 Points

Try:

var id = "23188xtr";
var lastName = "Smith";

var userName = id.toUpperCase();
lastName = lastName.toUpperCase();

userName += '#' +lastName;
Kel Kni
Kel Kni
1,577 Points
Kel Kni
Kel Kni
1,577 Points

Danielle Kiowski nope it works with strings, so i'm told.