how to count number of rows in gridview in javascript?

Question

As the question says, i wish to count the number of rows in gridview via JS. I am doing the way it is done here but that is not coming up correctly.

I have also tried different ways as:

 1. var rowscount = document.getElementByID('<%=Gridview1.ClientID%>').rows.length; 
 2. var rowscount = document.getElementByID("<%=Gridview1.ClientID%>").rows.length; 
 3. var rowscount = document.getElementByID('<%#Gridview1.ClientID%>').rows.length;
 4. var rowscount = document.getElementByID("<%#Gridview1.ClientID%>").rows.length;    
 5. var rowscount = document.getElementByID("Gridview1.ClientID").rows.length;
 6. var rowscount = document.getElementByID("Gridview1").rows.length;  

UPDATE : Forgot to Mention: My gridview is inside updatepanel. Would that make any difference? What is the right statement?

Answer 1

If you want to get the number of rows from the server one way would be to use:

var rowsCount = <%=GridView1.Rows.Count %>

It is also possible to send the data to JavaScript from codebehind.