docs: function isCheckedHeaderRow() {
      if (this.selectRows.length !== 0 && this.selectRows.length == this.dataSourceObj.rows.length) {
          //修改全选标记为false
          $('#' + this.options.id + '_header_multi_input').addClass('is-checked');
          this.hasChecked = true;
      } else {
          $('#' + this.options.id + '_header_multi_input').removeClass('is-checked');
          this.hasChecked = false;
      }
  }