Ticket #24767: 24767.2.diff

wp-content/themes/twentythirteen/js/functions.js

@@ -49 +49 @@
                 button.on( 'click.twentythirteen', function() {
                         nav.toggleClass( 'toggled-on' );
                 } );
+                
+                // Fix sub-menus for touch devices.
+                if ( 'ontouchstart' in window ) {
+                        menu.find( '.menu-item-has-children > a' ).on( 'touchstart.twentythirteen', function( e ) {
+                                var el = $( this ).parent( 'li' );
+                
+                                if ( ! el.hasClass( 'focus' ) ) {
+                                        e.preventDefault();
+                                        el.toggleClass( 'focus' );
+                                        el.siblings( '.focus' ).removeClass( 'focus' );
+                                }
+                        } );
+                }
 
                 // Better focus for hidden submenu items for accessibility.
                 menu.find( 'a' ).on( 'focus.twentythirteen blur.twentythirteen', function() {