Confirmation Validation <input name="xxx" ............> <input name="confirm_xxx" confirmationValidation="xxx" ..............>

confirmationValidation

.directive('confirmationValidation', function () {
        return {
            require: 'ngModel',
            link: function (scope, elm, attrs, ctrl) {
                var field = attrs.confirmationValidation // || '';   should contain input field (binding: name="xxx") to use as confirm validation
                ctrl.$parsers.unshift(function (viewValue, $scope) {
                    var noMatch = viewValue != scope.signUpForm[field].$viewValue
                    ctrl.$setValidity('noMatch', !noMatch)
                })
            }
        }
    })