Remove infinitescroll in single page (#319)

* Remove infinitescroll in single page

* Update infinitescroll.js

assets/js/infinitescroll.js

@@ -1,18 +1,29 @@
 // Code snippet inspired by https://github.com/douglasrodrigues5/ghost-blog-infinite-scroll
-$().ready(function () {
-    var page = 2,
-        blogUrl = window.location,
+$(function ($) {
+    var currentPage = 1,
+        pathname = window.location.pathname,
+        $window = $(window),
+        $document = $(document),
         $result = $('.post-feed');
 
-    $(window).scroll(function () {
-        if ($(window).scrollTop() + $(window).height() == $(document).height()) {
-            if (page <= maxPages) {
-                $.get((blogUrl + '/page/' + page),
-                function (content) {
+    function handleScroll () {
+        // return if not scroll to the bottom
+        if ($window.scrollTop() + $window.height() !== $document.height()) {
+            return;
+        }
+
+        if (currentPage >= maxPages) {
+            return $window.off('scroll', handleScroll);
+        }
+
+        // next page
+        currentPage++;
+
+        // Load more
+        $.get((pathname + 'page/' + currentPage + '/'), function (content) {
             $result.append($(content).find('.post').hide().fadeIn(100));
-                    page = page + 1;
         });
     }
-        }
-    });
+
+    $window.on('scroll', handleScroll).trigger('scroll');
 });

default.hbs

@@ -63,10 +63,12 @@
     </script>
     <script type="text/javascript" src="{{asset "js/jquery.fitvids.js"}}"></script>
 
+    {{#if pagination.pages}}
     <script>
         var maxPages = parseInt('{{pagination.pages}}');
     </script>
     <script src="{{asset "js/infinitescroll.js"}}"></script>
+    {{/if}}
 
     {{!-- The #block helper will pull in data from the #contentFor other template files. In this case, there's some JavaScript which we only want to use in post.hbs, but it needs to be included down here, after jQuery has already loaded. --}}
     {{{block "scripts"}}}