Validate TextBox in GridView if RadioButton inside same Row is checked using JavaScript in ASP.Net

This way

HTML:

<asp:GridView ID="GridView1" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
    runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateField HeaderText="Name">
            <ItemTemplate>
                <asp:RadioButton ID="rbSelectRow" runat="server" onclick="RadioCheck(this);" Text="Select" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
        <asp:TemplateField HeaderText="Name">
            <ItemTemplate>
                <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Address">
            <ItemTemplate>
                <asp:TextBox ID="txtAddress" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<asp:Button ID="btnSave" Text="Save" runat="server" />

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[2] { new DataColumn("Id", typeof(int)),
                        new DataColumn("Name", typeof(string)) });
        dt.Rows.Add(1, "John Hammond");
        dt.Rows.Add(2, "Mudassar Khan");
        dt.Rows.Add(3, "Suzanne Mathews");
        dt.Rows.Add(4, "Robert Schidner");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

Script

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script type="text/javascript">
    function RadioCheck(rb) {
        var rbs = $('[id*=GridView1]').find('input');
        var row = $(rb).parent().find('tr');
        for (var i = 0; i < rbs.length; i++) {
            if (rbs[i].type == "radio") {
                if (rbs[i].checked && rbs[i] != rb) {
                    rbs[i].checked = false;
                    break;
                }
            }
        }
    }    
</script>
<script type="text/javascript">
    $(document).ready(function () {
        $('[id*=btnSave]').click(function () {
            $('[id*= GridView1] tr td:nth-child(1)').each(function () {
                var rb = $(this).find('[id*=rbSelectRow]');
                if (rb.is(':checked')) {
                    if ($.trim($(('[id*= txtAddress]'), $(rb).closest('tr')).val()) == "") {
                        alert('Please Enter Address');
                    }
                }
            });
        });
    });
</script>

Screenshot