nl_tokens: from js = > to html
pl_tokens: function ( element , valueAccessor , allBindings , viewModel , bindingContext ) { var $element = $ ( element ) ; var observable = valueAccessor ( ) ; if ( ko . unwrap ( observable ) ) { $element . datepicker ( 'update' , observable . datePicker ( ) . <mask> ( 'DD.MM.YYYY' ) ) ; // same as for .datepicker())); } }