When using Angular Elements, the _____ function is used to convert an Angular component into a custom element.
- createCustom()
- createCustomElement()
- createModule()
- ngModule()
When using Angular Elements, the createCustomElement() function is used to convert an Angular component into a custom element.
What is the primary purpose of Angular Elements?
- Create custom modules
- Create reusable web components
- Enable server-side rendering
- Extend Angular applications
The primary purpose of Angular Elements is to create reusable web components that can be used outside Angular applications.
The _____ decorator in a component class binds a property inside the component to a value that is passed from outside the component.
- @Injectable
- @Input
- @Output
- @ViewChild
The @Input decorator in a component class binds a property inside the component to a value passed from outside the component.
In template-driven forms, how can you customize the update trigger for form controls?
- By using the ControlValueAccessor interface
- By using the FormsModule module
- By using the HTTPInterceptor interface
- By using the ReactiveForms module
In template-driven forms, you can customize the update trigger for form controls by implementing the ControlValueAccessor interface, which allows you to define custom behavior for control updates.
To inject a service into another service, the service being injected should have the _____ decorator.
- @Component()
- @Inject()
- @Injectable()
- @Service()
To inject a service into another service in Angular, the service being injected should have the @Injectable() decorator.
Which Route Guard method should be implemented to decide whether navigation to a route should be allowed?
- canActivate
- canActivateChild
- canDeactivate
- canLoad
In Angular, the canActivate method of a Route Guard should be implemented to decide whether navigation to a route should be allowed.
Why might you want to use async/await syntax in your Protractor tests?
- To improve test performance
- To make tests slower
- To reduce code complexity
- To synchronize operations
Using async/await syntax in Protractor tests helps synchronize operations and handle asynchronous tasks, ensuring more reliable and stable tests.
You are building a registration form and want to ensure that the password and confirm password fields match. Which approach would you use to validate this?
- Use a simple JavaScript function to compare the fields.
- Use the Reactive Forms approach with custom validators.
- Use the Template-Driven Forms approach with ngModel binding.
- Use the Validator Functions provided by Angular.
To ensure that the password and confirm password fields match in an Angular registration form, you should use the Reactive Forms approach with custom validators. This allows for more complex validation logic and better user feedback.
How can you identify and select a specific element on a webpage in a Protractor test?
- browser.selectElement()
- element(by.css())
- element(by.model())
- findElement(By.id())
To identify and select an element on a webpage in Protractor, you can use the element(by.css()) method, specifying a CSS selector.
How can you prevent memory leaks related to observables when using the async pipe in Angular?
- Angular automatically handles memory leaks with the async pipe.
- Manually unsubscribing from the observable when it's no longer needed.
- There's no way to prevent memory leaks when using the async pipe.
- Using the ngOnDestroy lifecycle hook to unsubscribe from observables.
To prevent memory leaks when using the async pipe in Angular, you should use the ngOnDestroy lifecycle hook to unsubscribe from observables. Failing to unsubscribe from observables can lead to memory leaks, so it's essential to clean up resources properly.