单独的JS文件中是否包含Angular指令？

Question

I have this ngFocused directive working, but I'd like to put it into its own js file. How would I wire that up?

    var appObject = angular
        .module('app', ['ngAnimate'])
        .directive('ngFocused', [
            function() {
                var FOCUS_CLASS = "focused";
                return {
                    restrict: 'A', //Attribute only
                    require: 'ngModel',
                    link: function(scope, element, attrs, ctrl) {
                        ctrl.$focused = false;
                        element.bind('focus', function(evt) {
                            element.addClass(FOCUS_CLASS);
                            scope.$apply(function() { ctrl.$focused = true; });
                        }).bind('blur', function(evt) {
                            element.removeClass(FOCUS_CLASS);
                            scope.$apply(function() { ctrl.$focused = false; });
                        });
                    }
                }
            }
        ]);

Answer 1

Just split them into two files. (And don't forget to reference the new file to your html file using the <script> tag):

// file app.js
var appObject = angular.module('app', ['ngAnimate'])

// file ngFocused.js
appObject.directive('ngFocused', [ function() {
    var FOCUS_CLASS = "focused";
    return {
        restrict: 'A', //Attribute only
        require: 'ngModel',
        link: function(scope, element, attrs, ctrl) {
            ctrl.$focused = false;
            element.bind('focus', function(evt) {
                element.addClass(FOCUS_CLASS);
                scope.$apply(function() { ctrl.$focused = true; });
            }).bind('blur', function(evt) {
            element.removeClass(FOCUS_CLASS);
            scope.$apply(function() { ctrl.$focused = false; });
        })
     };
}]);

Answer 2

i like the IIFE approach. In your new file:

(function(app) {

     app.directive(....)

}(angular.module('app'));

That'll keep all your objects out of the global namespace. Be sure to reference your script defining your angular app before one's that reference it.