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<!DOCTYPE html>
<html>
<head>
    <title>CNIT 133 Homework 3 - Part 2</title>
    <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
    <h1>CNIT 133 Homework 3 - Part 2</h1>

    <form id="salesForm">
        <label for="salespersonName" title="Please make sure that the salesperson's name is spelled correctly">Salesperson's Name:</label>
        <input type="text" id="salespersonName" name="salespersonName"><br><br>

        <table border="1">
            <tr>
                <th>Item</th>
                <th>Qty Sold</th>
                <th>Total</th>
            </tr>
            <tr>
                <td>Item 1</td>
                <td><input type="number" id="qtyItem1" name="qtyItem1" min="0" value="0"></td>
                <td><input type="text" id="totalItem1" name="totalItem1" readonly></td>
            </tr>
            <tr>
                <td>Item 2</td>
                <td><input type="number" id="qtyItem2" name="qtyItem2" min="0" value="0"></td>
                <td><input type="text" id="totalItem2" name="totalItem2" readonly></td>
            </tr>
            <tr>
                <td>Item 3</td>
                <td><input type="number" id="qtyItem3" name="qtyItem3" min="0" value="0"></td>
                <td><input type="text" id="totalItem3" name="totalItem3" readonly></td>
            </tr>
            <tr>
                <td>Item 4</td>
                <td><input type="number" id="qtyItem4" name="qtyItem4" min="0" value="0"></td>
                <td><input type="text" id="totalItem4" name="totalItem4" readonly></td>
            </tr>
        </table>

        <label for="totalEarnings">Total Earnings:</label>
        <input type="text" id="totalEarnings" name="totalEarnings" readonly><br><br>

        <input type="button" value="Calculate Earnings" onclick="calculateEarnings()">
    </form>

    <script>
        $(document).ready(function () {
            $("#salespersonName").tooltip();
        });

        function calculateEarnings() {
            var qtyItem1 = parseFloat(document.getElementById("qtyItem1").value);
            var qtyItem2 = parseFloat(document.getElementById("qtyItem2").value);
            var qtyItem3 = parseFloat(document.getElementById("qtyItem3").value);
            var qtyItem4 = parseFloat(document.getElementById("qtyItem4").value);

            if (isNaN(qtyItem1) || isNaN(qtyItem2) || isNaN(qtyItem3) || isNaN(qtyItem4) ||
                qtyItem1 < 0 || qtyItem2 < 0 || qtyItem3 < 0 || qtyItem4 < 0) {
                alert("Invalid input. Please enter valid quantities (non-negative numbers).");
                return;
            }

            var totalItem1 = qtyItem1 * 20.99;
            var totalItem2 = qtyItem2 * 12.75;
            var totalItem3 = qtyItem3 * 9.95;
            var totalItem4 = qtyItem4 * 35.89;

            var totalSales = totalItem1 + totalItem2 + totalItem3 + totalItem4;
            var earnings = 250 + (0.09 * totalSales);

            document.getElementById("totalItem1").value = totalItem1.toFixed(2);
            document.getElementById("totalItem2").value = totalItem2.toFixed(2);
            document.getElementById("totalItem3").value = totalItem3.toFixed(2);
            document.getElementById("totalItem4").value = totalItem4.toFixed(2);
            document.getElementById("totalEarnings").value = earnings.toFixed(2);
        }
    </script>

    <a href="homework3.html">Return to Homework 3</a>
</body>
</html>