jQuery DOM attribute value

I ha开发者_如何学JAVAve the following callback function when using the jQuery star plugin:

$('.star').rating({
    callback: function (value, link) {
        {
            if (response.session) {
                $.post("update.php", {
                    uid: response.session.uid,
                    mid: $('.star').attr('name'),
                    val: value
                });
                alert($('.star').attr('name'));

            }
        });
}
});

and the following html:

<input name="star2" type="radio" class="star"/>
<input name="star2" type="radio" class="star"/>
<input name="star2" type="radio" class="star" checked="checked"/>
<input name="star2" type="radio" class="star"/>
<input name="star2" type="radio" class="star"/>

how can I get the name from the jQuery? I tried doing .attr as above and it returns undefined. I tried doing $($this).attr('name') and it returns the jquery fancy box name..

---

$('.star')

returns a collection of jQuery objects, so you should iterate it e.g.:

$('.star').each(function () {
    alert($(this).attr('name'));
});

the checked element is found by:

$('.star:checked').attr('name');

update, (in reply to comments) for multiple groups:

what if I have two star rating sets

$('.star:checked').each(function () {
     alert($(this).attr('name'));
});

---

var nameOfCheckedStar = $('.star:checked').attr('name');

I'm assuming you want the name of the checked star