NDOJ/templates/feed/feed_js.html

<script>
  window.page = {{page_obj.number}};
  window.has_next_page = {{1 if page_obj.has_next() else 0}};
  window.loading_page = false;
  $(function() {
    function getQueryParams() {
      var queryParams = {};
      var query = window.location.search.substring(1);
      var vars = query.split("&");
      for (var i = 0; i < vars.length; i++) {
        var pair = vars[i].split("=");
        queryParams[pair[0]] = decodeURIComponent(pair[1]);
      }
      return queryParams;
    }

    $(window).on("scroll", function() {
      if (window.loading_page || !window.has_next_page) return;
      var distanceFromBottom = $(document).height() - ($(window).scrollTop() + $(window).height());
      if (distanceFromBottom < 500) {
        window.loading_page = true;
        var params = {
          "only_content": 1,
          "page": window.page + 1,
        };

        params = Object.assign({}, getQueryParams(), params);

        $.get("{{feed_content_url}}", params)
          .done(function(data) {
          $(".has_next").remove();
          $(".middle-content").append(data);
          window.loading_page = false;
          window.has_next_page = parseInt($(".has_next").attr("value"));
          window.page++;
          MathJax.typeset($('.middle-content')[0]);
          onWindowReady();
          activateBlogBoxOnClick();
        })
      }
    });
  });
</script>