Angular form control valuechanges

In this video we will discuss how to monitor and react when a form control or form group value changes.

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Angular valueChanges Observable
1. Both FormControl and FormGroup classes inherit from the base AbstractControl class

2. AbstractControl class has valueChanges property

3. valueChanges property is an observable that emits an event every time the value of the control changes

4. To be able to monitor and react when the FormControl or FormGroup value changes, subscribe to the valueChanges observable