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

Posted by Karl Kanhai
Karl Kanhai
1,042 Points

I dont understand the task

Please Help me

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

var userName = id.toUpperCase() #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

Ezra Siton
Ezra Siton
12,644 Points
Ezra Siton
Ezra Siton
12,644 Points

assign (by =) the id var to new var named userName with uppercase letters (using The toUpperCase() method)

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

var userName = id.toUpperCase( ); 
alert(userName); 
// Output: 23188XTR
Ezra Siton
Ezra Siton
12,644 Points
Ezra Siton
Ezra Siton
12,644 Points

Task two the same idea only with concatenate (+ and +=):

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

var userName = id.toUpperCase() + "#"; // 23188XTR#
userName += lastName.toUpperCase(); // 23188XTR#SMITH

This line is with compile error (wrong syntax!!)

var userName = id.toUpperCase() #lastName

Uncaught SyntaxError: Invalid or unexpected token

** OUT of topic: in the future add more semantic meaning to you Q ("i dont understand" its to general for future searches :)). Thanks