var active = {}; var name = 'add_album'; LightUp(name); 
    $('#au_screen .layui-btn').on('click', function () {
      var othis = $(this), method = othis.data('method');
      active[method] ? active[method].call(this, othis) : '';
      var screen = Cookies.get(name, {path: ''}) ? JSON.parse(Cookies.get(name, {path: ''})) : [];
      screen.includes(method) ? screen.splice(screen.indexOf(method), 1) : screen.push(method);
      Cookies.set(name, JSON.stringify(screen), {path: ''});
      LightUp(name);
    });

    function LightUp(name) {
      var screen = $('#au_screen').find('.layui-btn');
      for (let index = 0; index < screen.length; index++) {
        const element = screen[index];
        $('#' + element.id).addClass("layui-btn-primary");
      }
      var screen = Cookies.get(name) ? JSON.parse(Cookies.get(name)) : [];
      for (let index = 0; index < screen.length; index++) {
        var element = screen[index];
        $('#' + element).removeClass("layui-btn-primary");
      }
    }

<script src="https://aus.shejiz.cn/ajax/libs/js-cookie/3.0.2/js.cookie.min.js" charset="utf-8"></script>

<div class="layui-btn-container" id="au_screen">
              {foreach $album as $k=>$v}
              <button class="layui-btn layui-btn-sm layui-btn-primary" data-method="{$k}" id="{$k}">{$v}</button>
              {/foreach}
            </div>