<asp:Button ID="btn" runat="server" Text="C" OnClientClick="Check()" />
<input type="checkbox" id="chk1" />
<input type="checkbox" id="ch2" />
<input type="checkbox" id="chk3" />
<input type="checkbox" id="chk4" />
On clicking the button , i want to find the number of checkboxes selected .
Using javascript?