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

Posted by J V
J V
5,519 Points

how do i use string concatenation so that the final value of userName is "23188XTR#SMITH"?

if its not close to what i have i think im misunderstanding something...

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

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

Tobias Helmrich
Tobias Helmrich
31,602 Points
Tobias Helmrich
Tobias Helmrich
31,602 Points

Hey,

you were on the right track. The only problem in your code is that the addition assignment operator should be += instead of =+, so you just switched that! You could also combine the three lines into one so your code is more compact.

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

var userName = id.toUpperCase() + "#" + lastName.toUpperCase();
Rich Donnellan
MOD
Rich Donnellan
Treehouse Moderator 27,696 Points
Rich Donnellan
Rich Donnellan
Treehouse Moderator 27,696 Points

You could also wrap in parentheses to keep it DRYer.

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