Question

I want to change or remove asp RadioButton GroupName in Javascript.

<asp:RadioButton runat="server" ID="optbtnRight" Text="Right" GroupName="second"/>

I have this function.

function ddlColumnType_onchange(){

    document.getElementById("<%=optbtnRight.ClientID %>").checked = false;
    //Want set group here        
}

I have call this on

<asp:DropDownList ID="ddlColumnType" runat="server" class="text small" 
     onchange="ddlColumnType_onchange()">
</asp:DropDownList>

Answer 1

Firstly I would suggest you to use html radio button with runat=”server” rather than asp radio button to let same javascript work in all the browsers without any issue as asp radio button gets rendered differently in different browsers
So the first thing would be

Replace this

<asp:RadioButton runat="server" ID="optbtnRight" Text="Right" GroupName="second"/>

With this

<input type="radio" runat="server" ID="optbtnRight" value="Right" name="second"/> Right

Then this should work for you

jQuery

$('#<%=optbtnRight.ClientID%>').attr("name","NewGroupName");

JavaScript

document.getElementById('<%=optbtnRight.ClientID%>').setAttribute("name","NewGroupName");