You could check whether the user has scrolled to the bottom or not in the below way…
Html file
<div (scroll)="onScroll($event)">
...
...
</div>
typescript file
onScroll(event: any) {
// visible height + pixel scrolled >= total height
if (event.target.offsetHeight + event.target.scrollTop >= event.target.scrollHeight) {
console.log("End");
}
}