#angularinterview2024

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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 22

This is the 22st part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q246. How do you get the current route in Angular? Q247. What is the safe navigation operator in Angular? Q248. What is non-null assertion operator in Angular? How it is different from a safe navigation operator? Q249. What does mean by relative path in Angular? How can you specify a relative route in Angular? Q250. What is the child route in angular? How it is different from Nesting routes? Q251. What is the page title? How can you set the page title in Angular? Q252. What is the Link Parameters Array in Angular? Q253. What are the default LocationStrategy and URL styles supported by Angular? Q254. What is the purpose of tag in Angular? Q255. What do you understand by the RouterState?

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Angular Interview Questions and Answers: Part 21

This is the 21st part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q235. What are the wildcard routes in Angular? Why is it important in any application? Q236. What are URL Redirects in Angular? How can you set up redirects in the Angular? Q237. What is the pathMatch in Angular? What is the default value of the pathMatch? Q238. What is the difference between pathMatch and redirectTo in Angular? Q239. What is AppRoutingModule in Angular? What are the advantages of using a routing module? Q240. Does routing modules import order matter in Angular? Q241. What is the use of RouterOutlet in Angular? Q242. What is the difference between RouterLink vs. RouterLinkActive in Angular? Q243. Can you skip the Routing Module in Angular? Do we need a Routing Module always? Q244. What is the use of router.navigate in Angular? Q245. What is the Activated Route in Angular?

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Angular Interview Questions and Answers: Part 20

This is the 20th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q224. What are HttpInterceptors in Angular? Q225. What is the use of HTTPInterceptors in Angular? Q226. Can you add multiple interceptors in Angular? Q227. How can you register and use an interceptor for an entire application in Angular? Q228. What is Change Detection in Angular? What is the disadvantage or limitation of the Change Detection in Angular? Q229. What are the different ways to trigger the change detection in Angular? Q230. What are the possible data update scenarios for change detection? Q231. What is an Angular Router? What do you understand by the router imports? Q232. Where and how can you define the routing in the Angular application? Q233. What is the default order of the Route in Angular? Does route order matter in Angular? Q234. What are router links in Angular?

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Angular Interview Questions and Answers: Part 18

This is the 18th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q203. What is RxJS in Angular? Q204. What is HttpClient in Angular? What are the advantages of using HttpClient? Q205. What does mean by subscribing and unsubscribing in RxJS? Q206. What is Promise in Angular? What are the different possible states of a Promise? Q207. What is Observable in Angular? What is the use of observable in Angular? Q208. What is Observer in Angular? How can you create an Observer? Q209. What is the difference between observable and observer in Angular? Q210. What will happen if you do not supply a handler for the Observer? Q211. What is the difference between Promises vs. Observables in Angular? Q212. What is an RxJS Subject in Angular?

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Angular Interview Questions and Answers: Part 17

This is the 17th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q194. How does Angular DI Framework Resolve the Dependencies? Q195. What is the difference between a Module Injector vs. an Element Injector? Q196. What is a Resolution Modifier in Angular? What are the different types of Resolution Modifiers? Q197. What is a DI token in Angular? Q198. What are the different Resolution Modifiers? Q199. What is a Type Token in Angular? Q200. What is a String Token in Angular DI? What is the main limitation of string tokens? Q201. What is an Injection Token in Angular? What is the difference between OpaqueToken vs InjectionToken? Q202. What is the forRoot() method in Angular? How it is different from forChild() method?

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Angular Interview Questions and Answers: Part 16

Q183. What is the providers array in Angular? What is the difference between provide and provider properties in Angular? Q184. What are the different types of providers in Angular? Q185. What is a Class Provider in Angular DI System? What is the purpose of useClass in Angular? Q186. What is a Value Provider in Angular DI System? What is the difference between Value Provider vs. Factory Provider in Angular? Q187. What is a Factory Provider in Angular DI System? What is the use of deps array in the Factory Provider of Angular? Q188. What is an Aliased Provider in Angular DI System? What is the difference between useExisting vs. useClass in Angular? Q189. Can you add multiple providers for the same DI token in Angular? How can you use multiple providers with the same token in Angular? Q190. What is the difference between multi-provider and regular provider in Angular? Q191. What is the difference between StaticProvider vs. Provider in Angular? Q192. What is the difference between the providers array vs. deps array for registering services in Angular? Q193. What is the difference between the Providers Array and viewProviders Array in Angular?

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Angular Interview Questions and Answers: Part 15

This is the 15th part of the Angular Interview Questions and Answers Series. In this part we will discuss the answers of the following Angular Questions:

Q171. What is Angular Service? What is the difference between a component and a service? Q172. What is the difference between Injector, @Injectable, and @Inject in Angular? Q173. What are the different places to configure the Injectors? How do you configure injectors with providers at different levels? Q174. What is a provider in Angular DI? Q175. What is the scope of a service in Angular? Q176. How do you restrict a provider scope to a Module only? Q177. Can you share services using Modules in Angular? Q178. Why is the service provided in a feature module visible everywhere in the application? Q179. Why is the service provided in a lazy-loaded module visible only to that module? Q180. Why does lazy loading always create a child injector? Q181. How can you check and tell if a NgModule or service was previously loaded? Q182. What is the difference between the service() and factory() functions in Angular?