Troubleshooting!

What is wrong with the following examples?

Example 1

<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
<!-- Cloaking device on!
var msg1 = "Hello there", num1 = 22;
alert(msg11);
alert(num1);
// Cloaking device off -->
</script>
</head>
<body>
</body>
</html>

ANSWER: The first alert() method is displaying a variable that hasn't been created or had a value assigned to it (msg11). This is an example of an undefined value.

Example 2

<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">
<!-- Cloaking device on!
var msg1 = "Hello there" num1 = 22;
alert(msg1);
alert(num1);
// Cloaking device off -->
</script>
</head>
<body>
</body>
</html>

ANSWER: No comma separates the variables in ...

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