ngAfterContentChecked()

This is the documentation for Angular 6.
You can switch to the latest version Angular 9.

A callback method that is invoked immediately after the default change detector has completed checking all of the directive's content.

ngAfterContentChecked(): void

The following snippet shows how a component can implement this interface to define its own after-check functionality.

@Component({selector: 'my-cmp', template: `...`})
class MyComponent implements AfterContentChecked {
  ngAfterContentChecked() {
    // ...
  }
}