Program:



<html>



<body>



<script>

//Declaration of variable

var userAge;

//Prompt the input from user

userAge=prompt("Enter user's Age");

/Condition to check age/

if (userAge < 18)

{

/If true, display the "You are under 18" message/

alert("You are under 18");

}

//Otherwise

else

{

/If false, display the "You are 18 or older" message/

alert("You are 18 or older");

}

//Close the script tag

</script>



</body>



</html>

Explanation:

The HTML tag was included using “<html>”...

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Chapter 14.8, Problem 1CP

Chapter 14.8, Problem 3CP

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Chapter 14 Solutions

Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)

Ch. 14.4 - Prob. 1CP Ch. 14.4 - Prob. 2CP Ch. 14.4 - Prob. 3CP Ch. 14.6 - Prob. 1CP Ch. 14.6 - Prob. 2CP Ch. 14.6 - Prob. 3CP Ch. 14.8 - Describe a method that can be used to gather a...Ch. 14.8 - Prob. 2CP Ch. 14.8 - Prob. 3CP Ch. 14.9 - Prob. 1CP

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Solution Summary: The author explains how the HTML tag, the body tag and the script tag were used to declare the variable "userAge".

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