html - use jquery to select a dropdown option on button click

Question

I want to use jQuery to select an option, say the 3th item, in a DropDownList by clicking a button, then have the DropDownList box change it's value, say '44'.

           <asp:DropDownList ID="DropDownList2" runat="server" 
                onselectedindexchanged="DropDownList2_SelectedIndexChanged">
                <asp:ListItem Selected="True">SELECT</asp:ListItem>
                <asp:ListItem Value="1">23</asp:ListItem>
                <asp:ListItem Value="2">32</asp:ListItem>
                <asp:ListItem Value="3">44</asp:ListItem>
                <asp:ListItem Value="4">61</asp:ListItem>
            </asp:DropDownList>

Answer 1

You can use:

 $("#<%=DropDownList2.ClientID%>").val('3');