Outline
- Fundamentals of Angular Directives - What is Modularity?
- Fundamentals of Angular Directives - Three Types of Directives in Angular
-
Fundamentals of Angular Directives - Attribute Directives
- Introduction
- Attribute Directives API
- ElementRef Exercise
- ElementRef Exercise Solution
- Renderer2 Exercise
- Renderer2 Exercise Solution
- Building our First Attribute Directive
- Building Actions Attribute Directive Exercise
- Actions Attribute Directive Exercise Solution
- Host Decorators
- HostBinding Exercise
- HostBinding Exercise Solution
- HostListener Exercise
- HostListener Exercise Solution
- Directive Inputs
- Directive Inputs Exercise
- Directive Inputs Exercise Solution
- Input, HostBinding and HostListener Exercise
- Input, HostBinding, and HostListener Exercise Solution
- BONUS: Mos Eisley Cantina Exercise
- Mos Eisley Cantina Exercise Solution
-
Fundamentals of Angular Directives - Structural Directives
- Introduction
- Built-in Structural Directives
- NgIf Built-in Structural Directive
- NgIf Structural Directive Exercise
- NgIf Exercise Solution
- NgFor Built-in Structural Directive
- NgFor Structural Directive Exericse
- NgFor Exercise Solution
- NgSwitch Built-in Structural Directive
- NgSwitch Structural Directive Exercise
- NgSwitch Exercise Solution
- NgSwitch with Enum
- NgSwitch with Enum Exercise
- NgSwitch with Enum Exercise Solution
- Structural Directives API
- FadeOut Structural Directive
- IfAndHide Structural Directive Exercise
- IfAndHide Directive Exercise Solution
-
Fundamentals of Angular Directives - Component Directives
- Introduction
- Component Templates
- Component Property Binding Exercise
- Component Property Binding Exercise Solution
- Component Event Binding Exercise
- Component Event Binding Exercise Solution
- Component Bindings
- Component Directive Exercise
- Component Directive Exercise Solution
- Component Output Binding Exercise
- Component Output Binding Exercise Solution
- Container and Presenter Component Design
- Modular Component Design Exercise
- Modular Component Design Exercise Solution
- Thank You
Outline
- Fundamentals of Angular Directives - What is Modularity?
- Fundamentals of Angular Directives - Three Types of Directives in Angular
-
Fundamentals of Angular Directives - Attribute Directives
- Introduction
- Attribute Directives API
- ElementRef Exercise
- ElementRef Exercise Solution
- Renderer2 Exercise
- Renderer2 Exercise Solution
- Building our First Attribute Directive
- Building Actions Attribute Directive Exercise
- Actions Attribute Directive Exercise Solution
- Host Decorators
- HostBinding Exercise
- HostBinding Exercise Solution
- HostListener Exercise
- HostListener Exercise Solution
- Directive Inputs
- Directive Inputs Exercise
- Directive Inputs Exercise Solution
- Input, HostBinding and HostListener Exercise
- Input, HostBinding, and HostListener Exercise Solution
- BONUS: Mos Eisley Cantina Exercise
- Mos Eisley Cantina Exercise Solution
-
Fundamentals of Angular Directives - Structural Directives
- Introduction
- Built-in Structural Directives
- NgIf Built-in Structural Directive
- NgIf Structural Directive Exercise
- NgIf Exercise Solution
- NgFor Built-in Structural Directive
- NgFor Structural Directive Exericse
- NgFor Exercise Solution
- NgSwitch Built-in Structural Directive
- NgSwitch Structural Directive Exercise
- NgSwitch Exercise Solution
- NgSwitch with Enum
- NgSwitch with Enum Exercise
- NgSwitch with Enum Exercise Solution
- Structural Directives API
- FadeOut Structural Directive
- IfAndHide Structural Directive Exercise
- IfAndHide Directive Exercise Solution
-
Fundamentals of Angular Directives - Component Directives
- Introduction
- Component Templates
- Component Property Binding Exercise
- Component Property Binding Exercise Solution
- Component Event Binding Exercise
- Component Event Binding Exercise Solution
- Component Bindings
- Component Directive Exercise
- Component Directive Exercise Solution
- Component Output Binding Exercise
- Component Output Binding Exercise Solution
- Container and Presenter Component Design
- Modular Component Design Exercise
- Modular Component Design Exercise Solution
- Thank You
NgModule
An NgModule is simply a class that is decorated with the @NgModule()
decorator. The decorator is simply a function that accepts a single argument that is an object containing the metadata for the Angular module. Modules in Angular provide many benefits. For now, let's focus on the ability to declare a directive in a module using the declarations
property of the metadata; that value of which is an array of classes that are the directives that we are using in the module.
By declaring the directive in the NgModule we are instructing the Angular framework that we have defined a new directive that can be used in any of the templates contained in the module. Without declaring the directives the Angular framework would simply be unaware of these new directives that we have created to enhance our application.
An example of an NgModule that declares a new HelloWorldDirective
directive is:
@NgModule({
declarations: [HelloWorldDirective]
})
export class AppModule { }
It is important to note that the HelloWorldDirective
is important from a separate file and is included in the declarations
array.