Delete row from Table and Update other row values in jQuery

No this is not as i expected ..

Hi zeeshanpas,

I am working on it. It will take time. I will get back to you soon.

Hi zeeshanpas,

Please refer below sample.

HTML

<div class="row">
    <div class="col-sm-12">
        <table id="tbl_TutorcoursList" style="table-layout: fixed; word-wrap: break-word"
            class="table table-hover table-bordered table-striped table-responsive">
            <thead>
                <tr>
                    <th>Subject
                    </th>
                    <th>School level
                    </th>
                    <th>Course
                    </th>
                    <th>Subject Priority
                    </th>
                    <th>School level Priority
                    </th>
                    <th>Action
                    </th>
                </tr>
            </thead>
            <tbody id="tblBody_TutorcoursList">
            </tbody>
        </table>
    </div>
</div>
<table>
    <tr>
        <td>Subject:<asp:TextBox ID="txtSubject" runat="server"></asp:TextBox><br />
            SchoolLevel:<asp:TextBox ID="txtSchoolLevel" runat="server"></asp:TextBox><br />
            Course:<asp:TextBox ID="txtCourse" runat="server"></asp:TextBox>
        </td>
    </tr>
</table>
<div class="row">
    <div class="col-sm-12 text-right">
        <button type="button" id="updateButton" class="btn btn-success" onclick="TutorCourseAddToTable();">
            Add
        </button>
    </div>
</div>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
    var _nextId = 1;

    function TutorCourseDelete(ctl) {
        var rowIndex = $(ctl).closest("tr")[0].rowIndex - 1;
        $('#tbl_TutorcoursList tbody tr').each(function (i, row) {
            if (rowIndex <= i) {
                //$(row).find("[name=subjctpriorty]").text("");
                $(row).find("[name=schllvlpriorty]").text("");
            }
        });
        $('#tbl_TutorcoursList tbody tr').eq(rowIndex).remove();
        UpdatePriorty();
    }

    function TutorCourseAddToTable() {
        $('#tblBody_TutorcoursList').append(TutorCourseTableRow(_nextId));
        UpdatePriorty();
        _nextId += 1;
    }

    function TutorCourseTableRow(id) {
        var Subject = $('#txtSubject').val();
        var SchoolLevel = $('#txtSchoolLevel').val();
        var Course = $('#txtCourse').val();
        var ret = '<tr>'
            + '    <td name="sub">' + Subject + '</td>'
            + '    <td name="sclevl">' + SchoolLevel + '</td>'
            + '    <td name="Course">' + Course + '</td>'
            + '    <td name="subjctpriorty"></td>'
            + '    <td name="schllvlpriorty"></td>'
            + '    <td><button type="button" onclick= "TutorCourseDelete(this);">Delete</button></td>'
            + '</tr>'
        return ret;
    }

    function UpdatePriorty() {
        var datas = [];
        $('#tbl_TutorcoursList tbody tr').each(function () {
            var $tblrow = $(this);
            var subject = $tblrow.find("[name=sub]").text();
            var schoolLevel = $tblrow.find("[name=sclevl]").text();
            var course = $tblrow.find("[name=Course]").text();
            var subjectPriorty = $tblrow.find("[name=subjctpriorty]").text();
            var schoolPriorty = $tblrow.find("[name=schllvlpriorty]").text();

            var obj = {};
            obj.Subject = subject;
            obj.SchoolLevel = schoolLevel;
            obj.Course = course;
            obj.SubjectPriorty = subjectPriorty;
            obj.SchoolPriorty = schoolPriorty;
            datas.push(obj);
        });

        var unique = [];
        var distinct = [];
        for (var i = 0; i < datas.length; i++) {
            if (!unique[datas[i].Subject]) {
                distinct.push(datas[i].Subject);
                unique[datas[i].Subject] = 1;
            }
        }

        var subjects = [];
        $('#tbl_TutorcoursList tbody tr').each(function (i, row) {
            var subjctpriorty
            var subject = $(row).find("[name=sub]").text();
            subjects.push(subject);
            var subjectExists = datas.filter(function (item) {
                return item.Subject == subject;
            });

            var aaa = subjects.filter(function (item) {
                return item == subject;
            });

            if (subjectExists.length == 1) {
                subjctpriorty = distinct.length;
                datas[i].SubjectPriorty = subjctpriorty;
                datas[i].SchoolPriorty = 1;
            }
            else if (subjectExists.length > 1) {
                subjctpriorty = subjectExists[0].SubjectPriorty;
                datas[i].SubjectPriorty = subjctpriorty;
                datas[i].SchoolPriorty = datas[i].SchoolPriorty == "" ? aaa.length : datas[i].SchoolPriorty;
            }
            $(row).find("[name=subjctpriorty]").text(datas[i].SubjectPriorty);
            $(row).find("[name=schllvlpriorty]").text(datas[i].SchoolPriorty);
        });
    }
</script>

Screenshot

If any issue or condition fails, please revert back with the cases.