Update

myapp/ns_page/templates/guest/page.html

@@ -40,13 +40,8 @@
 
 {% block script %}
 <script type="text/javascript">
-var app = new Vue({
-    el: '#app',
-    data: {
-        page: {{ pagedata['page']|tojson|safe }},
-    },
-    methods: {
-    },
-})
+Object.assign(root.data, {
+    page: {{ pagedata['page']|tojson|safe }},
+});
 </script>
 {% endblock %}