Question

What are the ways to trigger change detection in Angular?

Answer 1

You can inject either ApplicationRef or NgZone, or ChangeDetectorRef into your component and apply below specific methods to trigger change detection in Angular. i.e, There are 3 possible ways,

1. ApplicationRef.tick(): Invoke this method to explicitly process change detection and its side-effects. It check the full component tree.
2. NgZone.run(callback): It evaluate the callback function inside the Angular zone.
3. ChangeDetectorRef.detectChanges(): It detects only the components and it's children.