Firefox和IE的AJAX请求问题

我有一个复选框，每当复选框的状态发生变化(选中/未选中)时，它都会发送一个AJAX请求。我在Chrome中测试了所有东西，一切都很好。

但是，当我使用Firefox或IE时，AJAX请求不会改变SQL服务器中的值。我有点困惑为什么它不工作，我是相当新的JS和JQuery，所以任何帮助将非常感激。

下面是我使用AJAX调用PHP页面来更改复选框值的函数。

        //This function handles the clicking of checkboxes in the list
        //It sends an ajax POST message to a separate php file that handles the database updating
        function checkboxClicked(checkboxType, ticketNumber){
            $.ajax({
                type: "POST",
                url: 'updateCheckbox.php',
                dataType: 'json',
                async: 'true',
                data: {checkboxType: checkboxType, ticketNumber: ticketNumber},
                success: function(result, status){
                    if (status == "success"){
                        console.log("Status: " + status + ", Result: " + result);
                    }
                }
            });
            if(checkboxType == "Received"){
                window.location.reload();
            }
        }

这是PHP中显示复选框状态的行:

<?php
                        //This loop populates the ticket display using the records in the database
                        while($recordSet->EOF == false){
                            $ticketNumber = $recordSet->Fields['TicketNumber'];
                            $dateSubmitted = $recordSet->Fields['DateSubmitted'];
                            $department = $recordSet->Fields['Department'];
                            $courseNo = $recordSet->Fields['CourseNumber'];
                            $instructorName = $recordSet->Fields['InstructorName'];
                            $received = ($recordSet->Fields['Received']) ? "checked" : "unchecked";
                            $sendReminder = ($recordSet->Fields['SendReminder']) ? "checked" : "unchecked";
                            $email = $recordSet->Fields['Email'];
                            $CC = $recordSet->Fields['CC'];

                            $strHTML  = "<tr><td>$dateSubmitted</td>'n";
                            $strHTML .= "<td>$department</td>'n";
                            $strHTML .= "<td>$courseNo</td>'n";
                            $strHTML .= "<td style='word-break: break-all'>$instructorName</td>'n";
                            $strHTML .= "<td align='center'> <input type='checkbox' id='received' ".$received." class='receivedCheckbox' onclick='checkboxClicked('"Received'", ".$ticketNumber.")'/></td>'n";
                            $strHTML .= "<td align='center'> <input type='checkbox' id='sendReminder' ".$sendReminder." class='sendReminderCheckbox' onchange='checkboxClicked('"SendReminder'", ".$ticketNumber.")' data-email='".$email."'/></td>'n";
                            $strHTML .= "<td style='word-break: break-all;' align='center'> <a id='checkReceived' href='#' onClick='checkReceived('"$received'", '"$email'")'>".$email."</a></td>";
                            $strHTML .= "<td align='center'> <button onclick='"window.open('urlhere', '_self')'">Edit</button>'n";
                            $strHTML .= "<td align='center'> <button onclick='"window.open('urlhere')'">Print</button> </td>'n";
                            $strHTML .= "</tr>'n";
                            echo $strHTML;
                            $recordSet->MoveNext;
                        }
                    ?>

如果你们需要更多的信息，请告诉我。谢谢你！