jQuery add/remove css class on selected radio

Question

I've read a few solutions on here, but my problem differs enough where those will not work. Basically if the radio button is checked, add a css class to the parent div. If the radio is not checked, remove the css class. Sounds simple?

I have more than one radio button group, so in other words, there will be multiple radio buttons selected at a time. Each radio button group also is on different parts of the page seperated by other html.

Here is what I came up with:

  $(document).ready(function () {
    $('input').click(function () {
        if ($('input:not(:checked)')) {
            $('div').removeClass('style1');
        }
        if ($('input').is(':checked')) {
            $(this).parent().addClass('style1');
        }


    });
});

I think I'm on the right path with the input:not(:checked), but on the next line it removes style1 from all div elements instead of checking if other divs radio button child is checked.

I guess what I'm asking is how do I write a script that when a radio button is clicked, add a css class to the parent and then find all div tags on the page that have a child of input. If the divs child input is not checked, remove the css class. So if a div has a child input element and it is checked, don't remove the css class from the inputs div.

I hope that makes sense.

Answer 1

Assuming your radio buttons utilize the name property to properly group them, when one changes, you can find the radios with the same name, and remove the class, then add the class to the one that was activated.

Try it out: http://jsfiddle.net/U2AAQ/

$(document).ready(function () {
    $(':radio').change(function () {
        $(':radio[name=' + this.name + ']').parent().removeClass('style1');
        $(this).parent().addClass('style1');
    });
});​

Answer 2

Why not using the following: http://jsfiddle.net/Q2bzT/

$(document).ready(function () {
    $('input').click(function () {
        $('input:not(:checked)').parent().removeClass("style1");
        $('input:checked').parent().addClass("style1");
    });    
});​