activate last section heading when approaching footer (#21)

1 files changed, 22 insertions, 16 deletions

diff --git a/static/js/index.js b/static/js/index.js
index 2558e3b..fe53c5d 100644
--- a/static/js/index.js
+++ b/static/js/index.js
@@ -81,24 +81,30 @@ var $sitehead = $("#site-head");
         }
 
         $post.each(function () {
-          var f = $(this).offset().top;
-          var b = $(this).offset().top + $(this).height();
-          var t = $(this).parent(".post-holder").index();
-          var i = $(".fn-item[item_index='" + t + "']");
-          var a = $(this)
-            .parent(".post-holder")
-            .prev(".post-holder")
-            .find(".post-after");
+          if (($(window).height() + w) > ($(document).height() - $(".site-footer").height())) {
+            var l = $postholder.length;
+            $(".fn-item[item_index='" + (l - 1) + "']").removeClass("active")
+            $(".fn-item[item_index='" + (l) + "']").addClass("active")
+          } else {
+            var f = $(this).offset().top;
+            var b = $(this).offset().top + $(this).height();
+            var t = $(this).parent(".post-holder").index();
+            var i = $(".fn-item[item_index='" + t + "']");
+            var a = $(this)
+              .parent(".post-holder")
+              .prev(".post-holder")
+              .find(".post-after");
 
-          $(this).attr("item_index", t);
+            $(this).attr("item_index", t);
 
-          if (w >= f && w <= b) {
-            i.addClass("active");
-            a.fadeOut("slow");
-          } else {
-            i.removeClass("active");
-            a.fadeIn("slow");
-          }
+            if (w >= f && w <= b) {
+              i.addClass("active");
+              a.fadeOut("slow");
+            } else {
+              i.removeClass("active");
+              a.fadeIn("slow");
+            }
+        }
         });
       });
     }