Angular Concepts

What is data binding in Angular?

• Data binding in Angular is the removal of data synchronization between the model and view components.

• Data binding in Angular is the process of encrypting data between the model and view components.

• Data binding in Angular is the manual synchronization of data between the model and view components.

• Data binding in Angular is the automatic synchronization of data between the model and view components.

Explain the concept of decorators in Angular.

• Decorators in Angular are primarily used for error handling.

• Decorators in Angular are functions that allow a service, directive, or filter to be modified or extended. They are used to add metadata to classes for configuration purposes.

• Decorators in Angular are used for styling components only.

• Decorators in Angular are not supported in the latest versions.

How do routers work in Angular?

• Routers in Angular work by displaying all components simultaneously on the screen.

• Routers in Angular work by mapping URL paths to components and rendering the corresponding component based on the defined routes.

• Routers in Angular work by randomly selecting components to render based on URL paths.

• Routers in Angular work by connecting to external servers to fetch data for components.

What are the different types of data binding in Angular?

• Template binding

• String binding

• Interpolation, Property binding, Event binding, Two-way binding

• Directive binding

How can decorators be used in Angular components?

• Decorators in Angular components are used for styling only.

• Decorators in Angular components are used to handle routing.

• Decorators in Angular components are used for data manipulation.

• Decorators in Angular components are used to add metadata to classes, properties, or methods, allowing for modification or extension of their behavior.

What is the purpose of routers in Angular applications?

• Routers in Angular applications are used for data fetching from APIs

• Routers in Angular applications are used for handling user authentication

• Routers in Angular applications are used for styling the components

• Routers in Angular applications are used for navigation and routing between different components or views within the application.

Differentiate between one-way and two-way data binding in Angular.

• One-way data binding updates the view when the model changes, while two-way data binding updates both the model and the view when either changes.

• One-way data binding updates the model when the view changes.

• Two-way data binding updates the view only when the model changes.

• One-way data binding updates both the model and the view when either changes.

Give an example of using a decorator in an Angular application.

• @Module({ selector: '[appCustomDecorator]' }) export class CustomDecoratorModule { // logic here }

• @Component({ selector: '[appCustomDecorator]' }) export class CustomDecoratorComponent { // logic here }

• Example: @Directive({ selector: '[appCustomDecorator]' }) export class CustomDecoratorDirective { // logic here }

• @Service({ selector: '[appCustomDecorator]' }) export class CustomDecoratorService { // logic here }

Why is routing important in single-page applications?

• Routing is important in single-page applications to enable dynamic content loading, manage different views/components based on the URL, and enhance user experience and performance.

• Routing is important in single-page applications to add unnecessary complexity

• Routing is important in single-page applications to limit user interaction

• Routing is important in single-page applications to slow down content loading

How does Angular handle routing between different components?

• Angular does not support routing between components

• Angular uses a third-party library for routing

• Angular routing is handled through CSS styling

• Angular uses a built-in router module to define routes and load components based on the URL.