#mostfrequentlyaskedangularquestions

Angular Interview Questions and Answers: Part 14

Q160. How can you register a service at Component Level in Angular? Q161. How can you register a service at the Module Level in Angular? Q162. What is the difference between providing services in Modules vs Components? Q163. How can you register a service into another service in Angular? Q164. What is the Service Scope in Angular? Q165. What is the difference between the service registered as root vs platform type in the ProvidedIn property of Angular? Q166. What is the difference between a service registered as "root" vs "any" type in the ProvidedIn property of Angular? Q167. What is the difference between providedIn: root vs forRoot() pattern in Angular? Q168. What are the different ways to create Singleton Services in Angular? Q169. What is an Element Injector Tree in Angular? Q170. What is the Merge Injector in Angular?

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Angular Interview Questions and Answers: Part 12

This is the 12th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q136. What is data binding in Angular? Which type of data binding does Angular use? Q137. What are the different types of data binding used in Angular? Q138. What is Property Binding in Angular? What is the use of [] or square box in Angular? Q139. What is Attribute Binding in Angular? What is the difference between Property Binding vs Attribute Binding in Angular? Q140. What is the difference between colspan vs. colSpan (camel case) in Angular? Q141. What is String Interpolation in Angular? Q142. What is Event Binding in Angular? What is the use of $event payload in Angular? Q143. What is a Template Reference Variable in Angular? Q144. What is the difference between Property Binding vs. Event Binding? Q145. Can you use angular interpolation in the place of property binding? Q146. What is two-way data binding in Angular? What are the disadvantages of two-way data binding? Q147. What is the difference between (change) vs. (ngModelChange) events in Angular? Q148. What is the difference between [ngModel] vs. [(ngModel)] in Angular?

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Angular Interview Questions and Answers: Part 10

This is the 10th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q110. What are the Components in Angular? How can you create a component in Angular? Q111. What are Modules in Angular? What are the advantages of modules in Angular? Q112. What is declarable in Angular? Where it is defined in Angular? Q113. What are the different types of Modules in Angular? Q114. What is the difference between RootModule vs FeatureModule in Angular? Q115. What is CommonModule in Angular? What is the difference between CommonModule vs BrowserModule in Angular? Q116. What will happen if browserModule is used in a Feature Module? Q117. What will happen if you import the same module twice in Angular? How can you avoid circular module dependency in Angular? Q118. What is the difference between a Component vs. Module in Angular? Q119. What is the difference between Component vs. Directive in Angular? Q120. What is the difference between NgModule vs. JavaScript Module? Q121. How does Angular find components, directives, and pipes in a template? What is a template reference?

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Angular Interview Questions and Answers: Part 09

Q096. What are the differences between @Component vs. @NgModule vs. @Directive decorator in Angular? Q097. What is @Inject Decorator in Angular? Q098. What is the difference between @Inject() vs. @Injectable() in Angular? Q099. What is @Input Decorator in Angular? Q100. What is @Output Decorator in Angular? Q101. What is Content Projection in Angular? What is the use of ng-content in Angular? Q102. What is the difference between @ContentChild vs. @ContentChildren decorators in Angular? Q103. What is the difference between @ViewChild vs. @ViewChildren decorator in Angular? Q104. What is the use of @HostBinding Decorator in Angular? How it is different from @HostListener? Q105. What is @Host Decorator in Angular? What is the difference between @Host vs. @Self decorator? Q106. What is the use of @Self Decorator in Angular? Q107. What is the use of @SkipSelf Decorator in Angular? Q108. What is @Optional Decorator in Angular? What is the use of @Optional Decorator in Angular? Q109. What is the difference between @Self vs. @SkipSelf vs. @Optional decorator in Angular?

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Angular Interview Questions and Answers: Part 08

This is the 8th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q084. What is the difference between Annotations vs. Decorators in Angular? Q085. What are the different types of Decorators in Angular? Q086. What are Class Decorators in Angular? What are the different types of class decorators in Angular? Q087. What are Method Decorators? What are the different types of method decorators in Angular? Q088. What are Property Decorators or Field Decorators? What are the different types of property decorators in Angular? Q089. What is the difference between @HostBinding vs. @HostListener decorators in Angular? Q090. What are Parameter Decorators in Angular? What are the different types of parameter decorators in Angular? Q091. What is @NgModule Decorator in Angular? Q092. What is @Component Decorator in Angular? Q093. What is @Injectable Decorator in Angular? Q094. What is @Directive Decorator in Angular? What are the different types of directives in Angular? Q095. What is @Pipe Decorator in Angular?

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Angular Interview Questions and Answers: Part 13

This is the 13th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q149. What is Dependency Injection in Angular? What are the advantages of Dependency Injection? Q150. What are the different components of the Angular Dependency Injection Framework? How does dependency injection work in Angular? Q151. What do you mean by Hierarchical Dependency Injection in Angular? Q152. What is an Injector Tree? What are the different types of Injector Hierarchies in Angular? Q153. What is ModuleInjector Tree in Angular? How can you register services at the module level? Q154. What is the use of @Injectable decorator in Angular? What is root-level Service Registration? Q155. What is the root Module Injector in Angular? Q156. What is PlatforInjector in Angular? What is the difference between platform vs. root injector? Q157. What is the NullInjector in Angular? Q158. What is the difference between the @Injectable() vs @ngModule() service injector? Q159. What is the difference between Lazy Loaded vs Eagerly Loded service provider scope?

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Angular Interview Questions and Answers: Part 11

This is the 11th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q122. What are Directives in Angular? When to use directive? Q123. What are the different types of directives in Angular? Q124. What is the use of the *ngFor directive? What is the difference between the *ngFor vs. ngForOf directive in Angular? Q125. What is the index property in *ngFor directive? What is the use of index property in *ngFor directive? Q126. What is the purpose of *ngFor trackBy in Angular? Q127. What is the use of the *ngIf directive in Angular? Q128. What is the difference between the *ngIfElse vs. *ngIf directive in SQL? Q129. How can you use both *ngFor and *ngIf directives together on the same element? Q130. What is the difference between the *ngIf directive vs. hidden property in Angular? Q131. What is the use of the *ngSwitch directive? Q132. What is the difference between the *ngStyle vs. *ngClass directive in Angular? Q133. What is the use of ng-template in Angular? Q134. What is the use of the ngModel directive in Angular? What is the "banana-in-a-box" syntax in Angular? Q135. What is the difference between the (ngModel) vs [ngModel] vs [(ngModel)] directive in Angular?

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Angular Interview Questions and Answers: Part 07

This is the 7th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q072. What are the Lifecycle Hooks of Angular? What is the execution sequence of it? Q073. How does an Angular application work? Q074. What is ngOnInit()? How is it defined? Q075. What is the difference between a constructor vs. ngOnInit() in Angular? Which one is executed first? Q076. What is Bootstrapping in Angular? What is a Bootstrapping module? Q077. What is the difference between manual vs. automatic bootstrapping in Angular? Q078. What is a bootstrapped component? Is it necessary for the bootstrapped component to be the entry component? Q079. What is the use of manual bootstrapping? How do you manually bootstrap an application? Q080. What is Webpack? What is the use of Webpack in Angular? Q081. What is Metadata in Angular? Q082. What are Annotations in Angular? Q083. What are Decorators in Angular?

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