Write a program called restaurant.js, that calculates the tab for a couple based
ID: 3682789 • Letter: W
Question
Write a program called restaurant.js, that calculates the tab for a couple based on the use of a gift certificate and the items ordered. Since we are not collecting input from the users, use the same literal values for the appetizer, entrée, drinks and dessert that you see in my example below. The total for ordered items, restaurant tax, and tab should be calculation and not hardcoded print statements.
An example execution of the program is given below:
This program will calculate a restaurant tab for a couple with a gift certificate, with a restaurant tax of 8.0%
Amount of gift certificate: 200
Ordered Items for person 1
Appetizer: 5.50
Entrée: 21.50
Drinks: 4.25
Dessert: 6.00
Ordered Items for person 2
Appetizer: 6.25
Entrée: 18.50
Drinks: 6.50
Dessert: 5.50
Ordered Items: $74.00
Restaurant tax: $5.92
Tab: $ -120.08
(negative amount indicates unused amount of gift certificate)
25 pts
Explanation / Answer
<html>
<head>
<script language="Javascript">
var ap1=5.50, ent1=21.5, d1=4.25, de1=5.5, ap2=6.25, ent2=18.5, d2=6.5, de2=5.5, orderi=0, restax=0, tab=0;
</script>
<body>
<script language="Javascript">
document.write("Amount of gift certificate: 200"+"<br>");
document.write("Ordered Items for person 1"+"<br>");
document.write("Appetizer:"+ap1+"<br>");
document.write("Entree:"+ent1+"<br>");
document.write("Drinks:"+d1+"<br>");
document.write("Dessert:"+de1+"<br>"+"<br>");
document.write("Ordered Items for person 2"+"<br>");
document.write("Appetizer:"+ap2+"<br>");
document.write("Entree:"+ent2+"<br>");
document.write("Drinks:"+d2+"<br>");
document.write("Dessert:"+de2+"<br>");
orderi=ap1+ent1+d1+de1+ap2+ent2+d2+de2;
restax=orderi*8/100;
tab=(orderi+restax)-200;
document.write("Ordered Items:"+orderi+"<br>");
document.writ("Restaurant Tax:"+restax+"<br>");
document.write("Tab:"+tab+"<br>");
</script>
</body>
</html>
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