[Solved] Consider this Angular component snippet:export class TestComponent implements DoCheck { ngDoCheck() {... } }How often will 'Change detection running' be logged during the component lifecycle? | Angular

Angular - Lifecycle Hooks

Consider this Angular component snippet:

export class TestComponent implements DoCheck {
  ngDoCheck() { console.log('Change detection running'); }
}

How often will 'Change detection running' be logged during the component lifecycle?

AEvery time Angular runs change detection

BOnly once after initialization

COnly when input properties change

DOnly when the component is destroyed

Step-by-Step Solution

Solution:

Step 1: Understand ngDoCheck purpose
ngDoCheck runs every time Angular runs change detection to detect and act on changes.
Step 2: Confirm frequency of ngDoCheck calls
It is called frequently, not just once or on input change, but on every change detection cycle.
Final Answer:
Every time Angular runs change detection -> Option A
Quick Check:
ngDoCheck runs on every change detection [OK]

Quick Trick: ngDoCheck runs on every change detection cycle [OK]

Common Mistakes:

Master "Lifecycle Hooks" in Angular

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