Angular - RxJS and Observables Fundamentals
Why does Angular prefer observables over promises for handling asynchronous data?
Why does Angular prefer observables over promises for handling asynchronous data?
easy🧠 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the difference between observables and promises
Observables can emit multiple values over time, while promises resolve once with a single value.Step 2: Relate this to Angular's asynchronous needs
Angular often deals with streams of data, like user inputs or HTTP events, which observables handle well.Final Answer:
Because observables can handle multiple values over time, unlike promises. -> Option DQuick Check:
Observable capability = B [OK]
Quick Trick: Observables stream data; promises deliver once only. [OK]
Common Mistakes:
MISTAKES- Thinking promises are unsupported in Angular
- Believing observables are simpler to write
- Confusing cancellation abilities
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