@Component

@Module

@Directive

@Injectable

The main difference is that promises handle a single asynchronous event, while observables can handle multiple events over time.

Observables are simpler to use than promises in all cases.

Promises can handle multiple events, while observables handle a single event.

Promises are always synchronous, while observables are asynchronous.

Use '[(ngModel)]' for two-way data binding in Angular.

Apply '[(data)]' for binding in Angular.

Implement 'ng-bind' for two-way data binding.

Use '[(bind)]' for data binding in Angular.

Pipes in Angular manage component lifecycle events.

Pipes in Angular transform data for display in templates.

Pipes in Angular handle user authentication.

Pipes in Angular define routing paths for navigation.

ngOnChanges

ngAfterViewInit

ngOnInit

ngDoCheck

Dependency injection is a technique for optimizing performance in Angular.

Dependency injection is a design pattern in Angular that provides a way to supply a class with its dependencies from an external source.

Dependency injection is a way to create components in Angular without external libraries.

Dependency injection is a method for managing state in Angular applications.

Change the URL directly in the browser's address bar.

Use the HttpClient to fetch data from a different route.

Use the Router service's navigate() method to change routes.

Implement a service to handle route changes automatically.

The 'redirectTo' property is used to handle user authentication in Angular.

The 'redirectTo' property defines the layout structure for components in Angular.

The 'redirectTo' property is used to define a default route for redirection in Angular routing.

The 'redirectTo' property specifies the URL for API calls in Angular.

Utilize string interpolation: {{expression}}.

Apply two-way binding with: [(ngModel)]='value'.

Use property binding syntax: [propertyName]='expression'.

Use event binding syntax: (eventName)='expression'.

The main advantage of using reactive forms is better control and scalability for complex forms.

Reactive forms require less code for validation than template-driven forms.

Template-driven forms offer better performance for large applications.

Reactive forms are easier to implement for simple forms.

A signal in Angular is a reactive primitive for state management and communication between components.

A signal in Angular is a component lifecycle hook for managing resources.

A signal in Angular is a directive for enhancing user interfaces.

A signal in Angular is a method for optimizing performance in applications.

Handle events using services in Angular.

Use directives to manage events in Angular.

Utilize observables for event handling in Angular.

Use event binding in templates with parentheses to handle events in Angular.

The purpose of 'ngOnInit' is to initialize component data and perform setup tasks after Angular has set the input properties.

The 'ngOnInit' method is used to handle user input events in Angular.

The purpose of 'ngOnInit' is to manage component destruction and cleanup tasks.

'ngOnInit' is responsible for rendering the component's template and styles.

Inject a service by adding it to the component's constructor.

Inject a service through a module import.

Inject a service by using a service provider.

Inject a service by calling it directly in the template.

Property binding is for setting properties of elements, while event binding is for handling events on elements.

Property binding is for handling events, while event binding sets properties.

Property binding is for creating components, while event binding is for routing.

Property binding is for styling elements, while event binding is for data fetching.

Generate a new pipe, implement PipeTransform, define transform method, use @Pipe decorator.

Create a new service, implement ServiceTransform, define execute method, use @Service decorator.

Generate a new component, implement ComponentTransform, define render method, use @Component decorator.

Create a new directive, implement DirectiveTransform, define apply method, use @Directive decorator.

The 'ngFor' directive is responsible for routing in Angular applications.

The 'ngFor' directive handles HTTP requests in Angular applications.

The 'ngFor' directive allows for dynamic rendering of lists in Angular applications.

The 'ngFor' directive is used for form validation in Angular.

observable.subscribe(value => { /* handle value */ }, error => { /* handle error */ }, () => { /* handle completion */ });

observable.onNext(value => { /* process value */ });

observable.observe(value => { /* respond to value */ });

observable.listen(value => { /* react to value */ });

constructor(private fb: FormGroup) {}

import { Component } from '@angular/core'; import { FormGroup, FormBuilder } from '@angular/forms'; @Component({ selector: 'app-simple-form', template: `

import { FormGroup } from '@angular/forms';