Angular pass callback function to child component as @Input similar to AngularJS way

Question

AngularJS has the & parameters where you could pass a callback to a directive (e.g AngularJS way of callbacks. Is it possible to pass a callback as an @Input

Answer 1

Use Observable pattern. You can put Observable value (not Subject) into Input parameter and manage it from parent component. You do not need callback function.

See example: https://stackoverflow.com/a/49662611/4604351