Components in Angular?

Question

Angular

There are parent and child components. If you need to call the function of the parent component from the child, then it needs to be passed through bindings. What if you need to do the opposite, call a function from the parent that is declared in the controller of the child component?

Answer 1

from the parent to call the function that is declared in the controller of the child component?

Think about where something went wrong. The parent component should not want anything from its children. All he can do is change the data he passes through the bindings. In this case, it's enough to simply make a setter (via defineProperties or just a setter if you're using babel) on the controller's child directive.

Answer 2

You can use the $onChanges function - in the second angular, the analogue is used everywhere. Note that it only works with one-way bindings.
blog.thoughtram.io/angularjs/2016/03/29/exploring-...