learningJavaScript/chap6assign1.htm at master · NatashaE/learningJavaScript · GitHub

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<!DOCTYPE>
<html>
<head>
	<title>Chapter 6 Assignment 1</title>

	<script type="text/javascript">
	function lb()
	{
		document.write("<br>");
	}

	var exam_one = parseInt(prompt("Please enter the grade of the first exam"));
	var exam_two = parseInt(prompt("Please enter the grade of the second exam"));
	var exam_three = parseInt(prompt("Please enter the grade of the third exam"));
	</script>
</head>

<body style="background-color: gray">
	<script type="text/javascript">

	var exam_average = Math.round((exam_one + exam_two + exam_three) / 3);

	if (exam_average <= 100 && exam_average >= 91)
	{
		letter_grade = "A";
	}
	else if (exam_average <= 90 && exam_average >= 81)
	{
		letter_grade = "B";
	}
	else if (exam_average <= 80 && exam_average >= 71)
	{
		letter_grade = "C";
	}
	else if (exam_average <= 70 && exam_average >= 65)
	{
		letter_grade = "D";
	}
	else if (exam_average < 65)
	{
		letter_grade = "F";
	}
	else
	{
		document.write("Error with input values!!");
		lb();
	}

	document.write("Your 3 exam scores are:");
	lb();
	document.write("Exam 1: " + exam_one);
	lb();
	document.write("Exam 3: " + exam_two);
	lb();
	document.write("Exam 2: " + exam_three);
	lb();
	document.write("Average: " + exam_average);
	lb();
	document.write("Course grade: " + letter_grade);
	lb();

	switch (letter_grade)
	{
		case "A" :
			document.write("Great job, keep it up.");
			break;
		case "B" :
			document.write("Very nice work.");
			break;
		case "C" :
			document.write("You can do it, keep studying.");
			break;
		case "D" :
			document.write("You need some help, see the teacher.");
			break;
		case "F" :
			document.write("Please schedule an appointment with your advisor.");
			break;
		default :
			document.write("An error has occurred!!")
	}


	//document.write("")

	</script>
</body>
</html>