some-angular-learnings.txt

ANGULAR LEARNING:

															ANGULAR NOTES

1. app.module.ts: This is entry point 
2. app.component.ts: It has backend typescript code
3. learn about pipes | use: data formatting
4. variable declaration: name:string = “Brad”
5. function declaration: changeName(name:string):void => note param type and method return type
6. Why SERVICES? A component can delegate certain tasks to services, such as 
    1. fetching data from the server
    2. validating user input
    3. logging directly to the console. 
7. SERVICES injected to COMPONENTS
8. Services : @Injectable()
 9. Providing services
You must register at least one provider of any service you are going to use. The provider can be part of the service's own metadata, making that service available everywhere, or you can register providers with specific modules or components. You register providers in the metadata of the service (in the @Injectable() decorator), or in the @NgModule() or @Component()metadata

10. binding event to method:
<button (click)="deleteHero()">Delete hero</button>


In angular components are also directives

*ngIf: why star is used?
coz its strctural directive which directly changes the dom.


*ngIf isOpen; else #templateId
<ng-template #templateId> </ng-template>

ngStyle Directive : To add conditional CSS


ANGULAR Transclusion
Angular projection

ANGULAR 2 COMPILER: https://www.youtube.com/watch?v=kW9cJsvcsGo