#angularpart18

[techpointfundamentals]

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?