[Solved] Given this Angular component:@Component({ selector: 'app-counter', template: '{{count}}', changeDetection: ChangeDetectionStrategy.... } }What will Angular do when increase() is called? | Angular

Angular - Change Detection

Given this Angular component:

@Component({ selector: 'app-counter', template: '{{count}}', changeDetection: ChangeDetectionStrategy.Default }) export class CounterComponent { count = 0; increase() { this.count++; } }

What will Angular do when increase() is called?

AAngular will not update the view unless manually triggered.

BAngular will detect the change and update the view automatically.

CAngular will update the view only if OnPush strategy is set.

DAngular will throw an error due to missing lifecycle hook.

Step-by-Step Solution

Solution:

Step 1: Recognize default strategy behavior
With ChangeDetectionStrategy.Default, Angular runs change detection automatically on events.
Step 2: Effect of calling increase()
Calling increase() changes 'count', triggering Angular to update the view.
Final Answer:
Angular will detect the change and update the view automatically. -> Option B
Quick Check:
Default strategy auto-updates view on state change [OK]

Quick Trick: Default strategy auto-updates view on state change [OK]

Common Mistakes:

MISTAKES

Assuming manual update needed
Confusing with OnPush behavior
Expecting errors without lifecycle hooks

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More Angular Quizzes

Given this Angular component:

Step 1: Recognize default strategy behavior

Step 2: Effect of calling increase()

Final Answer:

Quick Check:

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