*ngFor="let item of items": iterate through a defined list of items.Conditionals have to listen to truthy or falsy value. : Adding Click events to buttons to call a method defined in the ts file.Import will display dynamic content from the ts file. ngAfterViewChecked: Invoked each time the view of the given component has been checked by the change detection mechanism of Angular.Īlways remember that hooks working in a component or directory, so use them in our component, we can do this:.ngAfterViewInit This is called when the component’s view has been fully initialized.ngAfterContentChecked: This is called each time the content of the given component has been checked by the change detection mechanism of Angular.ngAfterContentInit: Invoked after Angular performs any content projection into the component’s view. ngDoCheck: Whenever a change detection is running, this is called.ngOnDestroy: Called before angular destroys a directive or component.ngOnInit: This is called immediately after ngOnChanges is completed and it is called once.ngOnChanges: This is called whenever one of the input properties changes.Here you can see some Angular Lifecycle Hooks. We can hook into those different phases to get some pretty fine-grained control of our application. ng serve -ssl: serves the application using sslĪ component in Angular has a life-cycle, a number of different phases it goes through from birth to death.ng serve -o: Serves the application by opening up the application in a browser using any port 4200 or any available port.ng build: Builds the application for production and stores it in the dist directory.ng g cl : This will create a new class in the specified directory.ng g s : Creates a new Javascript class-based service.ng g d : This command angular directive. We can also use the ng g c shorthand to do this. ng generate component : This will create a new component of our application.ng add : This command will use your package manager to download new dependencies and update the project with configuration changes.ng lint my-app -help: This command returns all the available linting command list.ng lint my-app -format stylish : This formats our entire codebase.ng lint my-app -fix: If there are any form of linting errors, this command will fix it.ng lint my-app: This command checks our entire application for any linting warnings.ng new -help: This returns all available Angular command list.ng new -prefix best : This creates a new project and set the projects prefix to new.ng new : This will set up a new Angular application using the ng new command.
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