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 Munyaradzi Matewe
Munyaradzi Matewe
1,953 Points

Use the JavaScript .toUpperCase( ) string method to assign an all uppercase version of the id variable to the userName v

app.js 
var id = "23188xtr";
var lastName = "Smith";
var res=str.toUpperCase();

var userName= id;
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>
Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

In future, please post questions only once (this one was duplicated 18 times!).

1 Answer

Tanyaradzwa Gozhora
Tanyaradzwa Gozhora
6,639 Points
Tanyaradzwa Gozhora
Tanyaradzwa Gozhora
6,639 Points

Instead of naming the variable you wanted to change, you had named the function you're using that is you were meant to say:

var userName = id.toUpperCase();

so that a Upper case version of id is assigned to username.

Right now saying str.toUpperCase(); makes the computer look for a variable named "str". You had to substitute the variable name. Hope this helps, mufesi wangu.