What is ngZone, and how does it relate to Angular’s change detection?

Short answer: utomatically. You can run code outside Angular's zone to prevent unnecessary change detection. ✅ constructor(private ngZone: NgZone) {} runHeavyTaskOutsideAngular() { this.ngZone.runOutsideAngular(() => { // code here won't trigger change detection }); } utomatically. You can run code outside Angular's zone to prevent… unnecessary change detection.… ✅

Example code

constructor(private ngZone: NgZone) {} runHeavyTaskOutsideAngular() { this.ngZone.runOutsideAngular(() => { // code here won't trigger change detection }); } utomatically. You can run code outside Angular's zone to prevent unnecessary change detection. ✅ Example: constructor(private ngZone: NgZone) {} runHeavyTaskOutsideAngular() { this.ngZone.runOutsideAngular(() => { // code here won't trigger change detection }); } utomatically. You can run code outside Angular's zone to prevent… unnecessary change detection. ✅ Example: constructor(private ngZone: NgZone) {} runHeavyTaskOutsideAngular() { this.ngZone.runOutsideAngular(() => { // code here won't trigger change detection }); }

Real-world example (ShopNest)

ShopNest admin can be built in Angular with modules/components, services for API calls, and reactive forms for product edit.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.