Demo

This project was generated with Angular CLI version 9.1.4.

Development server

Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.

Code scaffolding

Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build.

Running unit tests

Run ng test to execute the unit tests via Karma.

Running end-to-end tests

Run ng e2e to execute the end-to-end tests via Protractor.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI README.

Few commands

To create Component and Serviceby using (ng g c componentname , ng g s servicename).

lifecycle hook

ngOnChanges − When the value of a data bound property changes, then this method is called.

ngOnInit − This is called whenever the initialization of the directive/component after Angular first displays the data-bound properties happens.

ngDoCheck − This is for the detection and to act on changes that Angular can't or won't detect on its own.

ngAfterContentInit − This is called in response after Angular projects external content into the component's view.

ngAfterContentChecked − This is called in response after Angular checks the content projected into the component.

ngAfterViewInit − This is called in response after Angular initializes the component's views and child views.

ngAfterViewChecked − This is called in response after Angular checks the component's views and child views.

ngOnDestroy − This is the cleanup phase just before Angular destroys the directive/component.