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

Posted by David Armstrong
David Armstrong
2,297 Points

Confusion regarding what the outcome should look like. I'm not understanding the wording.

If I could see the correct code it would help me understand, thank you

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

var userName = id + lastName;
userName.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>

1 Answer

Charlie Gallentine
Charlie Gallentine
12,092 Points
Charlie Gallentine
Charlie Gallentine
12,092 Points

Here is the general form of the answer, I will give further explanation below:

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

var userName = id.toUpperCase(); //Task 1.

userName += "#" + lastName.toUpperCase(); //Task 2.

The line:

userName += "#" + lastName.toUpperCase(); //Task 2.

is a short hand method of string concatenation. It is equivalent to:

userName =  userName + "#"  + lastName.toUpperCase(); //Task 2.

The whole thing could potentially be shortened to:

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

var userName = id.toUpperCase() + "#" + lastName.toUpperCase(); //Task 1&2

At the expense of some readability. Also, I'm not sure if that would pass the filters for task 1.

A tip for these sorts of challenges, if an example is given, try to mirror it exactly and you should have good luck.