What are Modules in Angular

Overview of Modules

Angular modules are a way to organize and structure an application. They group related components, directives, and services together.

What is a Module:

• An Angular module is a cohesive unit that contains components, directives, services, and more.
• Modules help organize and modularize the application, making it easier to manage and scale.

Creating and Organizing Modules

Let’s explore how to create and organize modules in an Angular application.

Generate a Module:

• Use the Angular CLI to generate a new module:

ng generate module example

Module Class:

• The generated module class is a TypeScript class with the @NgModule decorator.

// Example of an Angular module
@NgModule({
  declarations: [ExampleComponent],
  imports: [CommonModule],
  exports: [ExampleComponent],
  providers: [ExampleService]
})
export class ExampleModule { }

Module Metadata:

• The @NgModule decorator provides metadata for the module, including declarations, imports, exports, and providers.

Lazy Loading Modules

Angular supports lazy loading, allowing you to load modules on-demand rather than all at once.

Lazy Loading Configuration:

• Configure lazy loading in the application’s routing module by using the loadChildren property.

// Example of lazy loading in Angular routing module
{
  path: 'lazy',
  loadChildren: () => import('./lazy/lazy.module').then(m => m.LazyModule)
}

Lazy Module Structure:

• A lazy-loaded module should have its own module file, components, and services.

// Example of a lazy-loaded module
@NgModule({
  declarations: [LazyComponent],
  imports: [CommonModule],
  providers: [LazyService]
})
export class LazyModule { }

Conclusion

In this tutorial, we’ve covered the importance of Angular modules and how to create, organize, and utilize them in an application. Modules play a crucial role in structuring large-scale applications and enabling features like lazy loading.

In the next tutorial, we’ll explore Angular routing, allowing you to navigate between different components and modules in a single-page application.

“Angular module structure explained”
“Angular module tutorial for beginners”
“Creating custom modules in Angular”
“Angular module best practices”
“Understanding NgModule in Angular”
“Angular feature modules guide”
“Step-by-step guide to Angular modules”