Question

I have a RadioButtonList which has AutoPostBack set to True and is being handled server-side:

<asp:radiobuttonlist ID="myRBL" OnSelectedIndexChanged="MyRBL_SelectedIndexChanged"
    RepeatDirection="Horizontal" AutoPostBack="True" runat="server">
    <asp:ListItem Selected="True">Choice 1</asp:ListItem>
    <asp:ListItem>Choice 2</asp:ListItem>
</asp:radiobuttonlist>

I want to “progressively enhance” this by adding a JavaScript function with the OnClick attribute. After adding OnClick=”myFunction();”, the serverside code is no longer called when JavaScript is disabled in the browser.

Has anyone got a way around this (do I have to implement the IPostBackEventHandler or am I missing something)?

UPDATE: 08-26-2010 4:31 p.m. Pacific

Apparently, the ASP.NET this control cannot submit with JavaScript disabled. Does anyone have a detailed solution to this?

Answer 1

AutoPostBack uses JavaScript to post back after clicking a radio button. By setting the onclick attribute, this behaviour is overwritten, so you must add an additional event handler to the click event.

As far as I know, there’s no simple way to do this in plain JavaScript, so I would recommend using jQuery:

$('#radioButtonId').click(myFunction);