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

Posted by Nurideen Abubakari
Nurideen Abubakari
3,206 Points

concatenation

how to add # symbol in between id and lastname

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

var userName='id'
console.log(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>

1 Answer

akak
akak
29,445 Points
akak
akak
29,445 Points

For starters you need to use variables instead of strings. To concat you use plus sign. Here is how it should look like so you can analyze yourself.

var id = "23188xtr";
var lastName = "Smith";
var userName = id.toUpperCase() + "#" + lastName.toUpperCase();