提前谢谢你！我添加了自定义指令来呈现电话号码格式的字段。它工作得很好，直到gulp缩小js文件。之后它抛出错误**[$injector：unpr]未知提供程序：eProvider〈- e〈- phoneInputDirective**是在某个地方注册指令的特殊方法吗？我不确定是怎么回事。请帮助。

careApp.directive('phoneInput', function ($filter, $browser) {
    return {
        require: 'ngModel',
        link: function ($scope, $element, $attrs, ngModelCtrl) {
            var listener = function () {
                var value = $element.val().replace(/[^0-9]/g, '');
                $element.val($filter('tel')(value, false));
            };

            // This runs when we update the text field
            ngModelCtrl.$parsers.push(function (viewValue) {
                return viewValue.replace(/[^0-9]/g, '').slice(0, 10);
            });

            // This runs when the model gets updated on the scope directly and keeps our view in sync
            ngModelCtrl.$render = function () {
                $element.val($filter('tel')(ngModelCtrl.$viewValue, false));
            };

            $element.bind('change', listener);

            $element.bind('keydown', function (event) {
                var key = event.keyCode;
                // If the keys include the CTRL, SHIFT, ALT, or META keys, or the arrow keys, do nothing.
                // This lets us support copy and paste too
                if (key == 91 || (15 < key && key < 19) || (37 <= key && key <= 40)) {
                    return;
                }
                $browser.defer(listener); // Have to do this or changes don't get picked up properly
            });

            $element.bind('paste cut', function () {
                $browser.defer(listener);
            });
        }

    };
});

careApp.filter('tel', function () {
    return function (tel) {
        if (!tel) { return ''; }

        var value = tel.toString().trim().replace(/^\+/, '');

        if (value.match(/[^0-9]/)) {
            return tel;
        }

        var country, city, number;

        switch (value.length) {
            case 1:
            case 2:
            case 3:
                city = value;
                break;

            default:
                city = value.slice(0, 3);
                number = value.slice(3);
        }

        if (number) {
            if (number.length > 3) {
                number = number.slice(0, 3) + '-' + number.slice(3, 7);
            }
            else {
                number = number;
            }

            return ("(" + city + ") " + number).trim();
        }
        else {
            return  city;
        }

    };
});