Number of rows in an ASP.NET GridView table using Javascript

Question

Having the GridView control id, I would like to get some ideas on how to count GridView rows, or at least be able to tell if at least one row exists in a Gridview, this limitation is that I can only use the client (in this case javascript)

Answer 1

var rowscount = document.getElementByID('<%=Gridview1.ClientID%>').rows.length; alert(rowscount);