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                <ul class="list">
  <li>First item</li>
  <li>Second item</li>
  <li>Third item</li>
  <li>Fourth item</li>
  <li>Fifth item</li>
  <li>First item</li>
  <li>First item</li>

<a href="#close" class="button">Show</a>




                var i = 0;
var object = '.content ul li'; //Искомый объект, класс 'content' настраиваете под свой/убираете
var count = $(object).length; //Кол-во искомых объектов
$('.button').off('click'); //Отбиндим предыдущие функции(опционально)
    if(i >= count){
        i = 0;
        return false; //выйдем из функции, при ее сбросе
    var delimiter = i + 4; //вычислим индекс следующего "последнего элемента"
    $(object).hide(); //спрячем все объекты
    while(i < delimiter){
        $(object).eq(i).show();//покажем только нужные
$('.button').trigger('click');//"Костыль", если нужно по умолчанию сначала выводить только первые 4 записи.