jQuery wrap code after x number of elements

Question

I have a UL that contain any number of LIs. I am trying to create some jQuery code that will parse the original UL and wrap a UL and another LI after every 5 of the original

Answer 1

jQuery('ul#original_ul').attr('id', 'processed_ul')
    .find('li:nth-child(5n)').each(function() {
        $(this).prevAll('li').andSelf()
            .wrapAll('
');
    });