code: function(column){
  			var index = -1;
  			for(var i=0;i < this.gridCompColumnArr.length;i++){
  				if(this.gridCompColumnArr[i] == column){
  					index = i;
  					break;
  				}
  			}
  			return index;
  		}
docs: /*
  获取column属于第几列