docs: function getColumnByField(field) {
      for (var i = 0; i < this.gridCompColumnArr.length; i++) {
          if (this.gridCompColumnArr[i].options.field == field) {
              return this.gridCompColumnArr[i];
          }
      }
      for (var i = 0; i < this.gridCompColumnFixedArr.length; i++) {
          if (this.gridCompColumnFixedArr[i].options.field == field) {
              return this.gridCompColumnFixedArr[i];
          }
      }
  
      return null;
  }