How to trigger window scroll with jQuery

I recently had to trigger a scroll event using jQuery to make a parallax plugin work after some images had loaded and none of the following worked:

$(window).tigger('scroll');
$(document).tigger('scroll');
$('body').tigger('scroll');
$('html').tigger('scroll');
$('html, body').tigger('scroll');

It turns out you need to call scroll() and not trigger():

$(window).scroll();