Ticket #22491: 22491.2.diff

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 i, changed, current = getFieldsContent();
+                for ( var i = 0; i < initial.length; i++ ) {
+                        if ( changed = ( inital[i] !== current[i]) )
+                                break;
+                }
+                if ( changed )
                         return '<?php _e('The changes you made will be lost if you navigate away from this page.'); ?>';
         };
 })(jQuery);