code: function() {
          var self = this;
          this.$main.on('change', 'td[editable]', function(e, newValue) {
              var row = $(this).parent(),
                  columIndex = row.find('td').index($(this)),
                  rowIndex = row.parent().find('tr[class!="sum"]').index(row) / self.rowSpan;
              if (self.options.selectable) {
                  columIndex = columIndex - 1;
              }
              var field = self.options.column[columIndex].field;
  
              // 更新 data
              self.options.data[rowIndex][field] = newValue;
  
              return self.options.onEdit.call(self, {
                  newValue: newValue,
                  field: field,
                  item: self.options.data[rowIndex],
                  index: rowIndex + 1
              }, e);
          });
      }
docs: 绑定编辑成功事件
  @private