Loading the continuation of the page, how to find out how much is left to "scroll" to the end of the page?

Question

JavaScript

advise how to find out how much is left to "scroll" to the end of the page, so that you can load more news? like a feed in VK?

Answer 1

$(window).scroll(function(){
  if($(window).scrollTop() + $(window).height() > $(document).height() - 100) {
    // Делаем что нам нужно когда доскролили вниз
   $('.hidden-block').addClass('show-hidden_block');
  }
});