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Questions and Answers
What are the major features of Angular?
What are the major features of Angular?
Declarative templates, dependency injection, end to end tooling
Describe Angular as a framework.
Describe Angular as a framework.
Angular is a completely revived component-based framework where an application is a tree of individual components.
What is the purpose of directives in Angular?
What is the purpose of directives in Angular?
Directives add behavior to an existing DOM element or component instance.
Where can you store a component's template in Angular?
Where can you store a component's template in Angular?
What is the purpose of NgModule decorator in Angular?
What is the purpose of NgModule decorator in Angular?
How does Angular divide the functionality of an application?
How does Angular divide the functionality of an application?
What is the purpose of ngOnInit in Angular?
What is the purpose of ngOnInit in Angular?
What is the main responsibility of the Constructor in Angular?
What is the main responsibility of the Constructor in Angular?
Why is it advised not to perform actual 'work' in the constructor of an Angular class?
Why is it advised not to perform actual 'work' in the constructor of an Angular class?
What is the significance of services in Angular applications?
What is the significance of services in Angular applications?
Explain the purpose of ElementInjector hierarchies in Angular.
Explain the purpose of ElementInjector hierarchies in Angular.
What is the default method in a class that is executed upon instantiation in Angular?
What is the default method in a class that is executed upon instantiation in Angular?
Why is it recommended to use services for common functionality in Angular?
Why is it recommended to use services for common functionality in Angular?
When does Angular call the ngOnInit lifecycle hook?
When does Angular call the ngOnInit lifecycle hook?
What is the role of the NullInjector in Angular dependency injection?
What is the role of the NullInjector in Angular dependency injection?
How does Angular handle the registration of services in an application?
How does Angular handle the registration of services in an application?
What is the name of the Angular module that you bootstrap to launch the application?
What is the name of the Angular module that you bootstrap to launch the application?
What is the major advantage of using HttpClient in Angular applications?
What is the major advantage of using HttpClient in Angular applications?
How can you handle errors returned from HttpClient in an Angular component?
How can you handle errors returned from HttpClient in an Angular component?
What is RxJS used for in Angular applications?
What is RxJS used for in Angular applications?
What should you do to begin receiving values from an Observable instance?
What should you do to begin receiving values from an Observable instance?
What is the purpose of an Observer in RxJS?
What is the purpose of an Observer in RxJS?
What is the difference between Promise and Observable?
What is the difference between Promise and Observable?
What is multi-casting in the context of Observables?
What is multi-casting in the context of Observables?
How can you handle errors in Observables using an error callback?
How can you handle errors in Observables using an error callback?
What method can accept callback function definitions for next, error, and complete handlers in Observables?
What method can accept callback function definitions for next, error, and complete handlers in Observables?
What is the purpose of the animation transition function in Angular?
What is the purpose of the animation transition function in Angular?
How can you inject dynamic HTML, Style, Script, and Url using DomSanitizer?
How can you inject dynamic HTML, Style, Script, and Url using DomSanitizer?
What are some key differences in how dependency injection works between AngularJS and Angular?
What are some key differences in how dependency injection works between AngularJS and Angular?
How can you enable Ivy in an existing Angular project?
How can you enable Ivy in an existing Angular project?
What are some features you can expect with Ivy preview in Angular?
What are some features you can expect with Ivy preview in Angular?
How can you add a Web Worker in an Angular application?
How can you add a Web Worker in an Angular application?
What is the purpose of an App Shell in Angular?
What is the purpose of an App Shell in Angular?
What is the significance of capitalization conventions in Angular?
What is the significance of capitalization conventions in Angular?
What are class field decorators in Angular?
What are class field decorators in Angular?
What is a DI token in Angular?
What is a DI token in Angular?
What determines the type of compilation (JIT or AOT) when running ng build or ng serve commands?
What determines the type of compilation (JIT or AOT) when running ng build or ng serve commands?
What error is generated if arrow functions are still used in Angular?
What error is generated if arrow functions are still used in Angular?
What does the RouterOutlet directive do?
What does the RouterOutlet directive do?
What kind of functions cannot be used to assign values to decorator properties in Angular?
What kind of functions cannot be used to assign values to decorator properties in Angular?
How can you access the current RouterState in an Angular application?
How can you access the current RouterState in an Angular application?
What is the purpose of the RouterLink directive in Angular?
What is the purpose of the RouterLink directive in Angular?
What process does the compiler perform when it evaluates an expression during collection?
What process does the compiler perform when it evaluates an expression during collection?
What are macros supported by the AOT compiler in Angular?
What are macros supported by the AOT compiler in Angular?
Explain the purpose of RouterLinkActive directive.
Explain the purpose of RouterLinkActive directive.
How can you enable binding expression validation in Angular?
How can you enable binding expression validation in Angular?
How can you define a wildcard route in Angular?
How can you define a wildcard route in Angular?
How can you implement animation in an Angular project?
How can you implement animation in an Angular project?
What is ActivatedRoute used for in Angular?
What is ActivatedRoute used for in Angular?
How should a router be configured with route definitions?
How should a router be configured with route definitions?
What is the purpose of the style() function in Angular animations?
What is the purpose of the style() function in Angular animations?
What does Angular Animations provide for single page web applications?
What does Angular Animations provide for single page web applications?
What is the purpose of Ahead-of-Time (AOT) compilation in Angular?
What is the purpose of Ahead-of-Time (AOT) compilation in Angular?
How can you define a state transition in Angular animations?
How can you define a state transition in Angular animations?
How can custom elements functionality be implemented in Angular?
How can custom elements functionality be implemented in Angular?
What utility functions are provided by the RxJS library for working with observables?
What utility functions are provided by the RxJS library for working with observables?
What is the purpose of Http Interceptors in Angular?
What is the purpose of Http Interceptors in Angular?
How can you access elements directly in the view in Angular?
How can you access elements directly in the view in Angular?
What is the role of a Subject in RxJS?
What is the role of a Subject in RxJS?
How can you report missing translations in Angular?
How can you report missing translations in Angular?
What is the purpose of Bazel tool in Angular?
What is the purpose of Bazel tool in Angular?
What is the context in which an Angular application runs?
What is the context in which an Angular application runs?
How does Angular DSL differ from normal HTML?
How does Angular DSL differ from normal HTML?
What happens if custom ids for text messages are not unique?
What happens if custom ids for text messages are not unique?
How can you use Angular as a platform-independent framework?
How can you use Angular as a platform-independent framework?
What is the key advantage of using a Subject over a plain Observable in RxJS?
What is the key advantage of using a Subject over a plain Observable in RxJS?
What is the purpose of the AsyncPipe in Angular?
What is the purpose of the AsyncPipe in Angular?
When should you use inline template and when should you use an external template file in Angular components?
When should you use inline template and when should you use an external template file in Angular components?
How does Angular handle the innerHtml property binding to prevent XSS vulnerability?
How does Angular handle the innerHtml property binding to prevent XSS vulnerability?
What is interpolation in Angular and how is it represented?
What is interpolation in Angular and how is it represented?
What is a template expression in Angular and how is it used?
What is a template expression in Angular and how is it used?
What is a template statement in Angular and how is it different from a template expression?
What is a template statement in Angular and how is it different from a template expression?
What is the purpose of pipes in Angular and how are they used?
What is the purpose of pipes in Angular and how are they used?
What are the three categories in which binding types in Angular can be grouped?
What are the three categories in which binding types in Angular can be grouped?
How can a pipe be parameterized in Angular?
How can a pipe be parameterized in Angular?
What is the default behavior of the Angular CLI when generating components with templates?
What is the default behavior of the Angular CLI when generating components with templates?
What is the purpose of the safe navigation operator in Angular?
What is the purpose of the safe navigation operator in Angular?
How does the safe navigation operator help in accessing nested properties in Angular?
How does the safe navigation operator help in accessing nested properties in Angular?
When using the JIT compiler in Angular, how can you specify the warning level?
When using the JIT compiler in Angular, how can you specify the warning level?
In Angular, if you use the AOT compiler, where should you make changes to the configuration?
In Angular, if you use the AOT compiler, where should you make changes to the configuration?
Is the @Injectable() decorator mandatory on every service class in Angular?
Is the @Injectable() decorator mandatory on every service class in Angular?
What is the alternative name for the safe navigation operator in Angular?
What is the alternative name for the safe navigation operator in Angular?