What determines the location that AngularJS looks for when loading a module?

In my app module, I have defined dependencies based on the phonecat Tutorial. This module is located in the directory app:

app.module.js:
angular.module('phonecatApp', [
    'phoneList'                          // (*)
]);

Within the app/phone-list directory, there are two components:

phone-list/phone-list.module.js:
angular.module('phoneList', []);

and

phone-list/phone-list.component.js:
angular.module('phoneList').component('phoneList', {...});

When registering the module phoneList in the first snippet at (*), how does AngularJS know where to locate this module? Is the mapping from phoneList to the phone-list-directory name a built-in feature?

Answer №1

In AngularJS, modules are like dictionaries with keys. When you register a module, you provide it with a unique string identifier, like this:

angular.module('phoneList', []);

This registration step must be completed in JavaScript before you can start using your module by adding components, as shown in the following line:

angular.module('phoneList').component('phoneList', {...});

You can also inject your module into another one, like so:

angular.module('phonecatApp', [
    'phoneList'
]);

Answer №2

To ensure relevant modules are functioning, scripts containing their code must be incorporated into the webpage. This can be achieved through manual insertion of script tags or by utilizing task runners like grunt, gulp, webpack, among others, to handle this for you.

If the necessary module code is missing, angular will generate an error.

Simply put, angular does not concern itself with the origin of the code. It must already be present for angular to operate correctly.

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