code: function(keyword) {
          $('.page-inner').mark(keyword, {
              'ignoreJoiners': true,
              'acrossElements': true,
              'separateWordSearch': false
          });
  
          setTimeout(function() {
              var mark = $('mark[data-markjs="true"]');
              if (mark.length) {
                  mark[0].scrollIntoView();
              }
          }, 100);
      }
docs: 高亮文本