Untitled

let match = window.matchMedia("(max-width: 770px)");

  function addButtonAll() {          
          let catCounts = match.matches ? 3 : 10;
          if($(".ddcategories-links").length){
                let match = window.matchMedia("(max-width: 770px)");
                let catCounts = match.matches ? 3 : 10;
                $.each($(".ddcategories-links"), function(i, v) {
                        let wrapperItem = $(v);
                        if (wrapperItem.find(".dd_categories-links__item").length > catCounts) {
                                wrapperItem.find(".dd_categories-links-all-view").remove();
                                $.each(wrapperItem.find(".dd_categories-links__item"), function(k, item) {
                                        if(k > (catCounts - 1)) {
                                                $(item).css({
                                                        "display": "none"
                                                });
                                                $(item).addClass("hidden");
                                        }
                                });
                        }              
                          });

                          let buttonAll = <div class="dd_categories-links-all-view">Показать еще</div>;

                          $(".ddcategories-links").append(buttonAll);

                          $(".dd_categories-links_block").find(".dd_categories-links-all-view").on("click", function () {

                                  let button = $(this);

                                  $.each($(".ddcategories-links").find(".dd_categories-links__item"), function (index, val) {
                                          if (index > (catCounts - 1)) {
                                                  if ($(val).hasClass("hidden")) {
                                                          $(val).css({ "display": "inline-block" });
                                                          $(val).removeClass("hidden");
                                                          button.text("Скрыть");
                                                  } else {
                                                          $(val).css({ "display": "none" });
                                                          $(val).addClass("hidden");
                                                          button.text("Показать еще");
                                                  }
                                          }
                                  });
                          });
                  }
       
  }