text: 
  layui.use(['layer', 'custom'], function () {
      var layer = layui.layer, $ = layui.jquery, common = layui.custom;
      $(window).click(function () {
          layer.msg('dsaads');
          $(this).addClass('hui-back');
          $(this).siblings('li').removeClass('hui-back');
      });
  
  });
  