Toggle Footer [jQuery 1.12+ && debouncing]

on_scroll_toggle_element.js

// jQuery 1.12+
// Bind to window scrolling and setup debouncer
$(window).scroll(function() {
    clearTimeout(this.id);
    this.id = setTimeout(doneScrolling, 130); // 130ms was the shortest time that allowed execution of only once, any slower and it would fire multiple times
});

// Execute any functions here when scrolling stops
// Put all the things here!
function doneScrolling(){
    footerToggle();
};

function footerToggle(){
    $(window).scrollTop() === $(document).height() - $(window).height() ? // Are we at the bottom of the page?
        $('footer').fadeIn() : // Yes, fade the footer in
        $('footer').fadeOut(); // No, fade the footer out
};