$('.littleTaskBtn li').on('click',function(){

             var content=$('.content').html();

             $('.layui-timeline-item').css('display','block');

             $('#layui-timeline').append(content);

             var lists = $('.layui-timeline-item');

             for (var j = 0; j < lists.length; j++) {

                 lists.eq(j).j = j;

                 var list = lists.eq(j).prevAll().length;

                 $('.layui-timeline-item').eq(j).find('span:eq(0)').text(list + 1);

             }

         })