Which command is used to install Angular Universal in an existing Angular project?
- ng add @angular/universal
- ng add @nguniversal/express-engine
- ng add universal
- ng install angular-universal
To install Angular Universal in an existing Angular project, you use the command ng add @nguniversal/express-engine.
How can you test an Angular component that depends on a service with asynchronous methods?
- Manually delay the test execution with setTimeout
- Use Jasmine's done function
- Use the fakeAsync and tick functions
- Utilize the async and await keywords
In Angular testing, you can test a component with asynchronous service dependencies by using the **fakeAsync** and **tick** utilities. These allow you to handle asynchronous operations in a controlled manner during testing. The done function, async/await, and setTimeout are less suitable for this purpose.
What is the primary use of custom validators in Angular forms?
- Applying CSS styles
- Controlling routing and navigation
- Enhancing user interface
- Performing data validation
The primary use of custom validators in Angular forms is for performing data validation. Custom validators are used to check and ensure the validity of user input.
For a form control, setting the _____ property ensures that the validation status is updated only when the control loses focus.
- markAsTouched
- updateOn
- updateValueAndValidity
- validator
In Angular, setting the updateOn property for a form control ensures that the validation status is updated only when the control loses focus.
Which decorator is used to define a custom directive in Angular?
- @Component
- @Directive
- @Injectable
- @NgModule
To define a custom directive in Angular, you use the @Directive decorator.
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 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.
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.
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.