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In Angular, what is the behavior of the default change detection strategy when a component's state changes?

easy🧠 Conceptual Q1 of 15
Angular - Change Detection
In Angular, what is the behavior of the default change detection strategy when a component's state changes?
AIt requires manual triggering to detect changes.
BIt only checks the component where the change occurred.
CIt checks the entire component tree for changes on every event.
DIt ignores changes in nested objects automatically.
Step-by-Step Solution
Solution:

  1. Step 1: Understand default strategy

    The default strategy runs change detection for the entire component tree on each event.

  2. Step 2: Behavior on state change

    Any change triggers Angular to check all components, not just the one changed.

  3. Final Answer:

    It checks the entire component tree for changes on every event. -> Option C

  4. Quick Check:

    Default strategy runs global checks [OK]
Quick Trick: Default strategy checks all components on every event [OK]
Common Mistakes:
MISTAKES
  • Thinking only the changed component is checked
  • Assuming manual triggering is needed
  • Believing nested objects are ignored automatically

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