BehaviorSubject Vs Observable?
Answer : BehaviorSubject is a type of subject, a subject is a special type of observable so you can subscribe to messages like any other observable. The unique features of BehaviorSubject are: It needs an initial value as it must always return a value on subscription even if it hasn't received a next() Upon subscription, it returns the last value of the subject. A regular observable only triggers when it receives an onnext at any point, you can retrieve the last value of the subject in a non-observable code using the getValue() method. Unique features of a subject compared to an observable are: It is an observer in addition to being an observable so you can also send values to a subject in addition to subscribing to it. In addition, you can get an observable from behavior subject using the asObservable() method on BehaviorSubject . Observable is a Generic, and BehaviorSubject is technically a sub-type of Observable because BehaviorSubject is an observable wi...