[removed] How to detect if browser window is scrolled to bottom?

Question

I need to detect if a user is scrolled to the bottom of a page. If they are at the bottom of the page, when I add new content to the bottom, I will automatically scroll them

Answer 1

This works

window.onscroll = function() {

    // @var int totalPageHeight
    var totalPageHeight = document.body.scrollHeight; 

    // @var int scrollPoint
    var scrollPoint = window.scrollY + window.innerHeight;

    // check if we hit the bottom of the page
    if(scrollPoint >= totalPageHeight)
    {
        console.log("at the bottom");
    }
}

If you're looking to support older browsers (IE9) replace window.scrollY with window.pageYOffset