javascript - Executing a function attached to a button -


i trying execute function has been pre-declared. function attached button when click button error message 'popuppicker has not been declared'.

below copy of function , buttons trying execute function.

function popuppicker(ctl,w,h) {     var popupwindow = null;     settings='width='+ w + ',height='+ h + ',location=no,directories=no, menubar=no,toolbar=no,status=no,scrollbars=no,resizable=no,dependent=no';     popupwindow=window.open(<%= getservername.getservername("/quoteman/datepicker.aspx?ctl=") %> + ctl,'datepicker',settings);     popupwindow.focus(); }

this buttons. 

<td style="width: 120px">     <asp:textbox id="dateouttxt" runat="server" width="80px"></asp:textbox>     <asp:imagebutton id="imagebutton5" runat="server" borderstyle="none" imageurl="~/icons/vwicn063.gif" onclientclick="popuppicker('dateouttxt', 250, 250);" width="21px" /> </td> <td colspan="2" style="width: 100%">     <asp:textbox id="dateintxt" runat="server" width="80px"></asp:textbox>     <asp:imagebutton id="imagebutton1" runat="server" borderstyle="none" imageurl="~/icons/vwicn063.gif" onclientclick="popuppicker('dateintxt', 250, 250);" width="21px" /> </td> <td colspan="1" style="width: 100px"> </td>

the languages javascript , html vb.net in there.

make sure declare function either inside <head></head> or inside <body></body>. this:

<html>   <head> ... </head>   <body>     ...     <script>       function popuppicker(ctl,w,h) { ... }     </script>   </body> </html>

you should not put except comments or </html> below </body> tag. not valid.

if using jquery, make sure function not declared inside jquery's $(document).ready() outside of it. this:

<script>   function popuppicker(ctl,w,h) { ... }   $(document).ready(function(){..}) </script>

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