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

How do I use .toUpperCase ?

how do I put .toUpperCase string method to assign an all uppercase version of the variable to the username variable ?

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

var 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>
Jason Anders
Jason Anders
Treehouse Moderator 145,624 Points

Moderator has deleted duplicate post for this question

1 Answer

Brendon Butler
Brendon Butler
4,242 Points

To call a method from a data type.

  • Enter your variable
  • Add a period
  • Enter the method name
  • Add opening and closing parenthesis (filling with variables between them if necessary)
  • End with a semi-colon if it's the end of a line
var userName = inputSring.toUpperCase();

Thank you so much I was really stuck lol. Do you know how to put the # and the last name in .toUppercase on the sam eline as the username

Brendon Butler
Brendon Butler
4,242 Points

If you're talking about concatenation, you should be able to do something like this:

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

There's probably a more simple way to accomplish it, but that's what I came up with.