# HG changeset patch
# User Nicholas Jillings <n.g.r.jillings@se14.qmul.ac.uk>
# Date 1492182245 -3600
# Node ID 52224b9d6e8bd6b18bd5f8ce75a55ff7c81da6fd
# Parent  2dfc19a33bbc1fccd44ff407b3b7b97f5e52c1b7
Undefined vs null conditional checks in core.js

diff -r 2dfc19a33bbc -r 52224b9d6e8b js/core.js
--- a/js/core.js	Fri Apr 14 16:02:52 2017 +0100
+++ b/js/core.js	Fri Apr 14 16:04:05 2017 +0100
@@ -1202,7 +1202,7 @@
         // Get the data from Specification
         var pagePool = [];
         for (var page of specification.pages) {
-            if (page.position !== null || page.alwaysInclude) {
+            if (page.position !== undefined || page.alwaysInclude) {
                 page.alwaysInclude = true;
             }
             pagePool.push(page)
@@ -1215,7 +1215,7 @@
         // Now get the order of pages
         var fixed = []
         for (var page of pagePool) {
-            if (page.position !== null) {
+            if (page.position !== undefined) {
                 fixed.push(page);
                 var i = pagePool.indexOf(page);
                 pagePool.splice(i, 1);