$(document).ready(function() {
    $.ajax({
      dataType: 'json',
      url: '/category/test',
      success: function(data){
        $.each(data, function(index,element){
            $('.category__content').append('<div class="category__item"><a href="/category/' + element.id + '" class="category__link" >' + element.catName+ '</a></div>');
        })
      },
      error: function(data){
          console.log(data);
      }
    });
});