Get the value of the radio button that was selected before the user selects a new one

Question

If I have 3 radio buttons, is there a way through jQuery of finding out the value of the one that was selected before the user clicks a new one?

<div id="radio-group">
    <input type="radio" id="radio-1" name="radios" value="1" checked="true" />
    <input type="radio" id="radio-2" name="radios" value="2" />
    <input type="radio" id="radio-3" name="radios" value="3" />
</div>

In the example avove, if the user clicks on radio-3, I need a way to get 1, so that I can carry out some formattion to it. Thanks.

Answer 1

I would save the pressed values to an array and edit hidden value with that.

http://jsfiddle.net/BQDdJ/6/

HTML

<div id="radio-group">
    <input type="radio" id="radio-1" name="radios" value="1" checked="true" />
    <input type="radio" id="radio-2" name="radios" value="2" />
    <input type="radio" id="radio-3" name="radios" value="3" />
    <input type="hidden" id="radio-previous" name="radio-previous" />
</div>​

JavaScript

$(document).ready(function(){
    var clicks = new Array();
    clicks[0] = 1 //this should be the default value, if there is one

    $('input[name$="radios"]').change(function(){
       clicks.push($(this).val()) 
       $('#radio-previous').val(clicks[clicks.length-2])
    })
})

​