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

Posted by Brenda Bouchard
Brenda Bouchard
5,028 Points

Chalenge 2 Task 2

I don't understand the'#' symbol

app.js 
var id = "23188xtr";
var lastName = "Smith";
console.log(id.toUpperCase());
var userName = id + lastName;
console.log(lastName.toUpperCase());
var 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>

2 Answers

Colin Bell
Colin Bell
29,679 Points
Colin Bell
Colin Bell
29,679 Points

It's just wanting you to concatenate an all uppercase id with a literal # character followed by an all uppercase version of lastName and set it all as the userName variable.

Since you want the values of id and lastName variables, you don't put quotes around them. You do want the actual # character, so you put quotes around it. Use the + sign to concatenate in JavaScript:

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

var userName = id.toUpperCase() + "#" + lastName.toUpperCase();
TJ Egan
TJ Egan
14,420 Points
TJ Egan
TJ Egan
14,420 Points

What are you trying to achieve? The # sign is used to denote an 'id'

<div id = "main"><div>

This would be accessed with the # symbol, such as #main