What is the advantage of using a Route Resolver over fetching data directly in the component?
- Better caching
- Improved component load time
- Reduced HTTP requests
- Simplicity and ease
The advantage of using a Route Resolver is that it improves component load time by preloading data before the component is displayed.
To implement lazy loading in Angular, you need to use the loadChildren property in your _______.
- Component
- Module
- Route Configuration
- Service
To implement lazy loading in Angular, you need to use the loadChildren property in your Route Configuration. This property defines which module to load lazily.
In an Angular application, how would you implement a staggered animation with multiple elements?
- Use Angular CLI animations
- Use CSS animations
- Use a third-party animation library
- Use ngFor loop with a timeout
To implement a staggered animation with multiple elements, you can use ngFor loop with a timeout to apply animations to each element with a delay.
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.
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.
In Angular, you can group together multiple form controls into a single logical unit using _____ .
- ControlUnit
- FormControlGroup
- FormDirective
- FormGroup
In Angular, you can group together multiple form controls into a single logical unit using a FormGroup.
To check if a form control's value has been changed by the user, you can check the _____ property.
- dirty
- pristine
- touched
- value
To check if a form control's value has been changed by the user, you can check the dirty property. The "dirty" state means the control has been touched or modified.
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.
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.
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.
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.
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.