Is it necessary to assign angular.module to a variable in AngularJS?

After reviewing two AngularJS examples on Github, I find myself uncertain about how to properly modularize controllers. The first example sets a variable (foodMeApp) and reuses it, resulting in controllers that require fewer arguments and are easier to read. However, the second example does not use a variable (foodMeApp) and has more arguments, which seems to be a common approach in AngularJS samples.
Is there any advantage to using the second method?

1.https://github.com/IgorMinar/foodme

var foodMeApp = angular.module('foodMeApp', ['ngResource']);

foodMeApp.constant('CONFIG_A', {
  baseUrl: '/databases/',
});

foodMeApp.controller('HogeController', function HogeController($scope, CONFIG_A) {
    console.log(“less arguments");
});

2.https://github.com/angular-app/angular-app

angular.module('foodMeApp', ['ngResource']);

angular.module('foodMeApp').constant('CONFIG_B', {
  baseUrl: '/databases/',
});

angular.module('foodMeApp').controller('HogeController', ['$scope', 'CONFIG_B', function($scope, CONFIG_B) {
    console.log("more arguments");
}]);

Answer №1

When using angular.module('...'), constants, providers, controllers, factories, etc., all return the same module which allows you to chain module method calls if desired - it's all just JavaScript.

For example:

angular.module('foo', [])
.controller('bar', function() {})
.service('baz', function() {})
.constant('buzz', something)
.value('bizz', somethingelse);

Ultimately, it doesn't make a difference in functionality.

Answer №2

In this sample, an array is utilized for specifying dependencies that will be injected into the controller. The purpose of using the array method is to ensure that AngularJS can identify which items are being injected, especially when the code will eventually be minified. Without this array, Angular would only recognize 'a' and 'b' as injected items without understanding their true significance. By including these items in an array as strings, they remain unchanged during minification, allowing for proper functionality.

 angular.module('foodMeApp').controller('HogeController', ['$scope', 'CONFIG_B', 
   function($scope, CONFIG_B) {
        console.log("more arguments");
   }]);

I hope this explanation clarifies any confusion you may have had regarding these differences.

Answer №3

Choosing the first option is advantageous as it eliminates the need to constantly repeat angular.module('foodMeApp'). By naming it "foodMeApp", you can easily access it using foodMeApp, similar to how you would in the second approach. This results in less redundancy and a more streamlined process.

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