if(item.id == changeInfo.value) {
     let id = treeData[i].id,
         childrenLen = $('#' + id).next().find('.tree-second-node').length,
         h = childrenLen * 28,
         scrollH = ($('#' + item.id).parent().offset().top - this.height);
     $('#' + id).next().animate({'height':h + 'px'});
     setTimeout(() => {
         $('.defined-parts').animate({scrollTop: scrollH});
         $('#' + item.id).parent().addClass('active');
     },500)}