docs: function getColumnAttr(attr, field) {
      for (var i = 0; i < this.gridCompColumnArr.length; i++) {
          if (this.gridCompColumnArr[i].options.field == field) {
              return $(this.gridCompColumnArr[i].options).attr(attr);
          }
      }
      for (var i = 0; i < this.gridCompColumnFixedArr.length; i++) {
          if (this.gridCompColumnFixedArr[i].options.field == field) {
              return $(this.gridCompColumnFixedArr[i].options).attr(attr);
          }
      }
      return "";
  }