Can I add attributes to 'window' object in Angular 7?

Question

Can I add any attribute to 'window' object in Angular? Some thing like:

window.attr = "my_value"

I try tu use the object windows bat have the error:

Property 'attr' does not exist on type 'Window'.

Answer 1

Try casting window to any like

(window as any).attr = "my_value"

Or define type on the top of the component after your imports

declare var window: any;

Answer 2

Try like this:

 Window["attr"] = "my_value";