jQuery.each_slice inspired by Ruby's each_slice

each_slice.js

(function($) {
    $.each_slice = function(num, things, iterator) {
        var tmp = [];
        $.each(things, function(index, thing) {
            tmp.push(thing);
            if (tmp.length >= num || (index + 1) >= things.length) {
                iterator(tmp);
                tmp = [];
            }
        });
    };
})(jQuery);