Loading... does not work in IE11

[prothomsoft]

Please note that loading does not work in IE11.

[prothomsoft]

I found reason why it does not work. Fix is as follows:
let scrollY = window.scrollY || window.pageYOffset || document.documentElement.scrollTop;
if ((window.innerHeight + scrollY) >= (document.body.offsetHeight - 50)) {
this.loadMorePhotos();
}

[neptunian]

@prothomsoft i'll look into this, thanks!