Angular force number with range on input[type='text']

directive.js

app.directive('forcenum', function ($parse) {
    return {
        restrict: 'A',
        require: 'ngModel',
        link: function link(scope, element, attr, ngModel) {
            var max = parseInt(attr.fmax);
            var min = parseInt(attr.fmin);
            var nv;
            scope.$watch(function () {
                return ngModel.$modelValue;
            }, function (val) {
                var value = parseInt(val);
                if (value > max) {
                    nv = max;
                } else if (value < min) {
                    nv = min;
                } else if (!value) {
                    return;
                } else {
                    nv = value;
                }
                log(value, nv);
                ngModel.$setViewValue(nv);
                element.val(nv);
            });
        }
    };
});