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

combining 2 strings. var userName = id.toUpperCase(); userName += "#"; I need to add var lastName. How I do it?

Understanding adding strings but I can't complete this challenge.

Var id = "23188xtr"; var lastName= "smith"

var userName= ??.toUpperCase(); userName += "#";

Answer= 23188XTR#SMITH

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


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

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,850 Points

You need to add lastName - all uppercased - after the hash sign.

Victoria Theriot
Victoria Theriot
2,123 Points

It's still not working for me. :(

Here is my code:


  1. var id = "23188xtr";
  2. var lastName = "Smith";

  3. var userName = id.toUpperCase()

  4. userName += '#SMITH';


Any advice??

Thank you! Yikes! I I kept adding the +=.