ExtJS Grid Column Number

 {
                xtype: 'numbercolumn',
                text: '亏盈数量',
                width: 130,
                dataIndex: 'LossOrProfitNum',
                editor: {
                    xtype: 'numberfield',
                    minValue: 0,
                    decimalPrecision: 2
                },
                renderer: function (value, cellmeta) {
                    return Ext.util.Format.number(value, '0.00');
                }
            }