How to make a 'window:scroll' Event Listener in Angular6

gistfile1.txt

Use a @HostListener described here:
https://stackoverflow.com/questions/41304968/how-to-get-on-scroll-events

Examples:
https://plnkr.co/edit/jZEmvMVAJ0XoU0eL6dgp?p=info
https://plnkr.co/edit/5cs8oMraePEos0xEJbh8?p=preview
I used the second one last time I did it.

Don't forgt to import @HostListener:
import { HostListener } from '@angular/core';

If you see a warning in your code editor:
"parameter '$event' implicitly has 'any' type"
Here's the solution:
https://stackoverflow.com/questions/44521323/angular2-parameter-event-implicitly-has-any-type
What helped me is adding 'any' as type of my parameter like: ($event:any).

Of course, it's all about the 'window:scroll' event - but this can be used for other events as well.