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What does a BehaviorSubject provide that a regular Subject does not in Angular?

easy📝 Conceptual Q1 of 15
Angular - State Management
What does a BehaviorSubject provide that a regular Subject does not in Angular?
AIt stores the current value and emits it immediately to new subscribers
BIt only emits values when explicitly called with <code>next()</code>
CIt automatically completes after emitting one value
DIt can only emit string values
Step-by-Step Solution
Solution:
  1. Step 1: Understand BehaviorSubject behavior

    A BehaviorSubject keeps the latest value internally and emits it immediately to any new subscriber.
  2. Step 2: Compare with Subject

    A regular Subject does not store the current value and only emits new values after subscription.
  3. Final Answer:

    It stores the current value and emits it immediately to new subscribers -> Option A
  4. Quick Check:

    BehaviorSubject immediate emission = A [OK]
Quick Trick: BehaviorSubject always gives latest value to new subscribers [OK]
Common Mistakes:
  • Thinking BehaviorSubject does not store value
  • Confusing Subject with BehaviorSubject
  • Assuming BehaviorSubject auto-completes

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