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

Posted by Stanislav Berger
Stanislav Berger
1,971 Points

I don't understand how can I add '#' between ID and LASTNAME.

I use 'toUpperCase' method for ID & LastName, but I don't know how to add '#' between them. I used '+' but my attempts failled.

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

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

Tyrell Jentink
Tyrell Jentink
8,415 Points

I don't think you are understanding variable assignments...

Let's follow through your code: 

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

OK, so we have two variables, id and lastName. Then: 

var userName = id.toUpperCase();

You create a variable called userName, which now contains "23188XTR". Then:

var userName = lastName.toUpperCase();

You overwrote the variable userName, it now contains "SMITH". Then:

userName = id + '#'+ lastName;

This is actually invalid; When you are setting variables, you have to preface them with 'var'. Even if it DID read:

var userName = id + '#' + lastName;

it would STILL not work, because the variable userName gets overwritten again, now containing "23188xtr#Smith".

SO, the answer I THINK you are looking for is this:

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

var id = id.toUpperCase();
var lastName = lastName.toUpperCase();
var userName = id + '#'+ lastName;
Stanislav Berger
Stanislav Berger
1,971 Points

Thank you Tyrell! It was the best solution/