Question

What are the differences between reactive forms and template driven forms?

Answer 1

Below are the main differences between reactive forms and template driven forms

Feature	Reactive	Template-Driven
Form model setup	Created(FormControl instance) in component explicitly	Created by directives
Data updates	Synchronous	Asynchronous
Form custom validation	Defined as Functions	Defined as Directives
Testing	No interaction with change detection cycle	Need knowledge of the change detection process
Mutability	Immutable(by always returning new value for FormControl instance)	Mutable(Property always modified to new value)
Scalability	More scalable using low-level APIs	Less scalable using due to abstraction on APIs