How to clear data in asp.net using Javascript

Write in header section of page

 

<script type="text/javascript">

        function funClearField() {

            document.getElementById("<%= txt_DwL_ID.ClientID  %>").value = "";

            document.getElementById("<%= txt_Designation.ClientID  %>").value = "";

            document.getElementById("<%= txt_LeaveName.ClientID  %>").value = "";

            document.getElementById("<%= txt_LeaveNOD.ClientID  %>").value = "";

            document.getElementById("<%= lbl_Msg.ClientID  %>").innerHTML = "";

            return false;

        }

    </script>

Write in body section of page

<asp:Button ID="btn_Reset" runat="server" Text="Reset" Width="15%"  OnClientClick="return funClearField();"/>