Bird
0
0

Why is Angular's change detection considered a key factor for app performance?

hard🧠 Conceptual Q10 of 15
Angular - Change Detection
Why is Angular's change detection considered a key factor for app performance?
ABecause it compiles TypeScript to JavaScript
BBecause it controls when and how often the UI updates
CBecause it manages HTTP requests automatically
DBecause it handles user input validation
Step-by-Step Solution
Solution:

  1. Step 1: Understand change detection's role in UI updates

    It decides when the UI should refresh based on data changes.

  2. Step 2: Connect update frequency to performance

    Efficient detection reduces unnecessary updates, improving speed.

  3. Final Answer:

    Because it controls when and how often the UI updates -> Option B

  4. Quick Check:

    Change detection timing affects performance [OK]
Quick Trick: Efficient detection means faster UI updates [OK]
Common Mistakes:
MISTAKES
  • Confusing detection with compilation
  • Thinking it manages HTTP or validation
  • Ignoring its impact on performance

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Angular Quizzes
Angular Change Detection - When to use OnPush - Quiz 1easy HTTP Client - HttpClientModule setup - Quiz 1easy Reactive Forms - Validators (required, minLength, pattern) - Quiz 12easy Routing - RouterModule configuration - Quiz 6medium Routing - Route guards (canActivate, canDeactivate) - Quiz 4medium Services and Dependency Injection - How dependency injection works in Angular - Quiz 1easy Template-Driven Forms - ngForm directive and form state - Quiz 2easy Template-Driven Forms - ngModel for form binding - Quiz 9hard Template-Driven Forms - Form validation with template attributes - Quiz 4medium Template-Driven Forms - Form submission handling - Quiz 15hard