Ticket #22491: 22491-4.patch

wp-admin/edit-form-advanced.php

@@ -423 +423 @@
 <script type="text/javascript">
 (function($){
         function getFieldsContent() {
-                return ($('#title').val() || '') + ($('#attachment_caption').val() || '') +
-                ($('#attachment_alt').val() || '') + ($('#attachment_content').val() || '') + ($('#post_name').val() || '');
+                return [ $('#title').val() || '',
+                        $('#attachment_caption').val() || '',
+                        $('#attachment_alt').val() || '',
+                        $('#attachment_content').val() || '',
+                        $('#post_name').val() || '' ];
         }
 
         var initial = getFieldsContent();
 
         window.onbeforeunload = function() {
-                if ( initial != getFieldsContent() )
+                var changed;
+
+                $.each( getFieldsContent(), function(i, field) {
+                        if ( field != initial[i] ) {
+                                changed = true;
+                                return;
+                        }
+                });
+
+                if ( changed )
                         return '<?php _e('The changes you made will be lost if you navigate away from this page.'); ?>';
         };
 })(jQuery);