Radio buttons name: hinge_id, form: step3
Helper:
function $RC(form, name) {
return $(form).getInputs('radio', name).find(function(radio) {
if (radio.checked) {
return radio;
}
});
}
In callback:
var hinge_id = $RC('step3', 'hinge_id');
if (hinge_id != null) {
var hinge_id_regexp = new RegExp('hinge_id=([0-9]+)');
hinge_id_before = this.lastValue.match(hinge_id_regexp);
hinge_id_now = this.getValue().match(hinge_id_regexp);
if (hinge_id_before != null && hinge_id_before[1] != hinge_id_now[1])
{
console.log(hinge_id_before + ':' + hinge_id_now);
}
}
But it's very ugly, you know...
On Oct 30, 12:14 pm, Dmitry Polushkin <[EMAIL PROTECTED]>
wrote:
> Hi everybody!
>
> First of all, prototype is a great library.
>
> But I have a problem with getting the last changed value in
> Form.Observer. For example, if I'll do:
>
> new Form.Observer($(form), 0.2, some_callback_function);
>
> function some_callback_function() {
> console.log(this.getValue());
> console.log(this.lastValue());
>
> }
>
> It will log two different strings. But how to get diff between those
> two values?
>
> I need that, because I have much of elements in form, and I need to
> get name of the element, that have just changed. Form.Element.Observer
> isn't suit to solve my problem, because I have set of radio buttons
> (first argument of Form.Element.Observer is ID of input element).
>
> In previous example, I can search for string, like: /
> (MyRadioButtonName)=[0-9]+/
> but is it a good practice, or?
>
> Thank you for your help,
> Dmitry
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