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JAVASCRIPT Create a program that uses a loop, conditional statements, and a function to complete the...

JAVASCRIPT

Create a program that uses a loop, conditional statements, and a function to complete the following:

Using a loop, ask the user to enter the item name, price, and quantity for 3 items.

Using a function, calculate the following:

  • Calculate the cost of each item and display the cost on the screen.
  • Calculate the total cost of the three items and display the total cost on the screen.

Add a shipping charge at the end of the order based on the following conditions:

  • If the grand total is greater than $500, the shipping charge is $30.
  • If the grand total is between $200 and 499, the shipping charge is $15.
  • Otherwise, the shipping charge is $10.

Display the shipping charge.

Calculate the grand total of the order which includes the total cost of the three items with the shipping charge and display it on the screen.

All the numbers should display with 2 decimal places.

engineering   Computer-Science   
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Answer #1

Hello,

The following is the solution for this assignment.

I have added comments in the code for your easy reference. If you need more information or have queries, leave me a comment.

If this solution helps you with this assignment, do upvote this answer. Thank you.

//Code for this solution


<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Cost Calculator</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script>
function main() {
totalCost = 0.0;
//Get the item details
for(var i = 0; i < 3; i++) {
var name = prompt("Enter Item Name: ");
var price = prompt("Enter the price for " + name + ": ");
var quantity = prompt("Enter the quanity for " + name + ": ");
//calculate the total item cost
totalCost += itemCost(name, price, quantity);
}
//display the total item cost - displayed to 2 decimal places
document.getElementById('totalitemcost').innerText = "Total cost: " + parseFloat(totalCost).toFixed(2);
//calculate the shipping charges
shippingCharges = 0.0;
if (totalCost > 500) {
shippingCharges = 30;
} else if(totalCost >= 200 && totalCost <= 499) {
shippingCharges = 15;
} else {
shippingCharges = 10;
}
document.getElementById('shippingcharges').innerText = "Shipping charges: " + shippingCharges;
//calculate and display the grand total - displayed to 2 decimal places
document.getElementById('grandtotal').innerText = "Grand Total: " + parseFloat(totalCost + shippingCharges).toFixed(2);
}
//function to calculate item cost and display it
function itemCost(name, price, quantity) {
var cost = price * quantity;
var text = (document.getElementById('itemscost').innerText) || "";
text += "Item: " + name +", Cost: " + cost + ". ";
document.getElementById('itemscost').innerHTML = text;
return cost;
}
</script>
</head>
<body onload="main()">
<div id="itemscost"></div>
<div id="totalitemcost"></div>
<div id="shippingcharges"></div>
<div id="grandtotal"></div>
</body>
</html>

//Output for this solution

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