var prefix = expression;

expression += "[@name=" + name + "]";

expression += ", " + prefix + "[@name^=" + name + "[]";

so basicly filter on elements with name attribute equal to the chosen name, and also apply to those elements starting with the chosen name[

now you have both name=LIST and name=LIST[ in your filtering results

I modified it somewhat so that could have multiple selected checkboxes behaving like a radio (once you check at least one, you cannot uncheck) so that you have all 4 circumstances "checked"

normal radio : zero or one, once selected, always one

normal checkboxes : zero or multiple

radioCheckboxGroup : the real zero or one

radioMultipleCheckboxGroup : zero or multiple, once selected at least one.

to do so I added radioMultipleCheckboxGroup as a copy of radioMultipleCheckboxGroup and changed the x.click to :

var boo = false;

for (var inti=0;inti<x.length;inti++)

{

if (x[inti].checked==true)boo=true;

}

if (!boo)

{

return false;

}

Here it is:

$.fn.extend({

triState:function(){

return this.each(function(){

$(this).data('status', $(this).attr('checked'));

$(this).focus(function(){ $(this).data('status', $(this).attr('checked')); });

$(this).blur(function(){ $(this).data('status', $(this).attr('checked')); });

$(this).mousedown(function(){ $(this).data('status', $(this).attr('checked')); });

$(this).keydown(function(){ $(this).data('status', $(this).attr('checked')); });

$(this).click(function(){

if ($(this).data('status'))

$(this).attr('checked', false);

$(this).data('status', $(this).attr('checked'));

});

});

}

});

It's working good on (tested) FF, IE(7 anyway, still may be a little problem there), Opera, Safari (for Win).

P.S. Use as (where "radioid" is the ID used by radio buttons…)

[...]Ever wanted Radio-buttons having Checkbox behavior..?&#xD;
I mean Radio-buttons which you can click and CHECK and once again click and UNCHECK.&#xD;
Here is a jQuery plug-in which will let you do with just single line of code.[...]…