Hi Venkimithu try this
Html Code
<script type="text/javascript" src='<%=ResolveUrl("~/Scripts/jquery-1.4.1.js")%>'></script>
<script src='<%=ResolveUrl( "~/Scripts/Scripts.js")%>' type="text/javascript"></script>
<div>
<asp:TextBox ID="txtClearTextBox" runat="server"></asp:TextBox>
</div>
</form>
<script type="text/javascript">
$("[id*=txtClearText]").live("click", function () {
$(this).val('');
});
</script>
Code
if (!IsPostBack)
{
this.txtClearTextBox.Text = DateTime.Now.ToShortDateString();
}
it is just a simple sample you can try this as you want