<html>

<head>

<title>Background Color Changer</title>

</head>

<body>

<SCRIPT LANGUAGE="JAVASCRIPT">

<!-- This syntax hides JavaScript from older browsers that can't recognize it.

// Single line comments within JavaScript are made with the double forward slash.

// Several lines INCLUDING WHITESPACE can be commented using the /* */ syntax.

/* Below, a VARIABLE called strMessage is declared using the KEYWORD var.

Then a string (text message) enclosed within quotation marks is assigned to

the variable using the equals sign assignment OPERATOR.*/

var strMessage = "In JavaScript, the Document OBJECT has a Write METHOD and a bgColor PROPERTY"

// The page's (document OBJECT) background color is changed using the bgColor PROPERTY.

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

document.bgColor = "red"

document.bgColor = "yellow"

document.bgColor = "blue"

document.bgColor = "white"

// 1. The Write METHOD of the document OBJECT is used to write the variable's string message.

// Below the variable strMessage is called.

document.write(strMessage)

// 2. You could also write HTML tags. Here, 4 line breaks are made so that the identical message

// below doesn't run together with the message above. You will only see 4 line break separating

// the two identical lines when the page displays in the web browser.

document.write("<BR><BR><BR><BR>")

// 1.1 You could include the string directly and exclude the variable

document.write("In JavaScript, the Document OBJECT has a Write METHOD and a bgColor PROPERTY")

// 2.1 You could include HTML tags and the string

document.write("<P>" + "JavaScript can write" + "<FONT COLOR = BLUE><B>" + " HTML tags" + "</FONT></B>")

// 2.2 Notice that the concatenation using the plus sign may be taken out

document.write("<P>JavaScript can write<FONT COLOR = BLUE><B> HTML tags</FONT></B>")

// This ends the hide from older browsers syntax enclosing the entire JavaScript-->

</SCRIPT>

</body>

</html>