Feature modules for organization in Angular - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a feature module in Angular?

A feature module is a way to organize related code in Angular. It groups components, services, and other code that belong to a specific feature or area of the app. This helps keep the app clean and easier to manage.

beginner

Why use feature modules instead of putting everything in the root module?

Using feature modules helps keep the app organized and faster to load. It allows loading parts of the app only when needed (lazy loading), and makes the code easier to understand and maintain.

intermediate

How do you create a feature module in Angular?

You create a feature module by making a new Angular module file with the @NgModule decorator. You declare components and import needed modules inside it. Then you import this feature module into the root or other modules.

intermediate

What is lazy loading in the context of feature modules?

Lazy loading means loading a feature module only when the user needs it, not when the app starts. This makes the app start faster and saves resources.

intermediate

Can feature modules have their own routing in Angular?

Yes, feature modules can have their own routing configuration. This lets each feature manage its own navigation paths, making the app modular and easier to update.

What is the main purpose of a feature module in Angular?

A To organize related code for a specific feature

B To replace the root module

C To style components

D To handle HTTP requests

Feature modules group related code for a specific feature to keep the app organized.

Which decorator is used to define a feature module in Angular?

A @Component

B @NgModule

C @Directive

D @Injectable

The @NgModule decorator defines an Angular module, including feature modules.

What does lazy loading a feature module do?

A Loads the module only when needed

B Prevents the module from loading

C Loads the module immediately at app start

D Loads all modules at once

Lazy loading delays loading a feature module until the user navigates to it.

Can feature modules have their own routing configuration?

A Routing is not related to modules

B No, only the root module can have routing

C Only services can have routing

D Yes, feature modules can have their own routing

Feature modules can define their own routes to manage navigation within that feature.

Which of these is NOT a benefit of using feature modules?

A Better app organization

B Faster app startup with lazy loading

C Automatically styles components

D Easier code maintenance

Feature modules help organize code and improve loading, but they do not style components automatically.

Explain what a feature module is and why it is useful in Angular applications.

Think about how breaking an app into parts helps manage complexity.

Describe how lazy loading works with feature modules and its benefits.

Imagine only opening a room in a house when you enter it.