Extjs Format of numberfield

Question

I'm using ExtJS 5.1.1 an there is a big question about formatting the value.

For example a phone number i want to display the format (0000) 000 00 00-00

For an double I wanna use the format 1.000.000,10.

The last example works - just only in the console

xtype: 'textfield',
        enableKeyEvents: true,
        thousandSeparator : '.',
        decimalSeparator : ',',
        fieldLabel: "numberfield",
        decimalPrecision: 2,
        listeners:{
            keyup: function(field){
                var val = field.getValue(),
                formatter = Ext.util.Format;

                Ext.util.Format.currencyAtEnd= true;
                Ext.util.Format.thousandSeparator = '.';
                Ext.util.Format.decimalSeparator = ',';
                output = Ext.util.Format.number(val,'0.000,00');    
                console.info(output);
            }
        }

Does anyone can give me a hint, where the problem can be?

Michael