From 0c860b0d92f9959f6747f8c02e9671eb2fc561aa Mon Sep 17 00:00:00 2001
From: Michał Gołębiowski-Owczarek <m.goleb@gmail.com>
Date: Wed, 22 Jan 2020 16:44:34 +0100
Subject: All: Remove usage of jQuery positional selectors

jQuery positional selectors () have been deprecated in
[jQuery 3.4.0](https://blog.jquery.com/2019/04/10/jquery-3-4-0-released/)
and they'll be removed in jQuery 4.0.0. This PR removes their usage.

Most of the changes were possible without changing public API. However,
dropping `:even` usage required a change to the
[`header` option](https://api.jqueryui.com/accordion/#option-header)
of the accordion widget. I made it an optional function; this will need
to be documented.

The polyfill for `.even()` & `.odd()` is added for jQuery <3.5.0. There was
no usage of the :odd selector in the code but the `.odd()` method is also
polyfilled for completeness.

Closes gh-1904
---
 demos/position/cycler.html | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

(limited to 'demos')

diff --git a/demos/position/cycler.html b/demos/position/cycler.html
index 910b0050c..49616b380 100644
--- a/demos/position/cycler.html
+++ b/demos/position/cycler.html
@@ -49,24 +49,24 @@
 			});
 		}
 
-		left( $( "img:eq(0)" ) );
-		center( $( "img:eq(1)" ) );
-		right( $( "img:eq(2)" ) );
+		left( $( "img" ).eq( 0 ) );
+		center( $( "img" ).eq( 1 ) );
+		right( $( "img" ).eq( 2 ) );
 
 		function animate( to ) {
 			$( this ).stop( true, false ).animate( to );
 		}
 		function next( event ) {
 			event.preventDefault();
-			center( $( "img:eq(2)" ), animate );
-			left( $( "img:eq(1)" ), animate );
-			right( $( "img:eq(0)" ).appendTo( "#container" ) );
+			center( $( "img" ).eq( 2 ), animate );
+			left( $( "img" ).eq( 1 ), animate );
+			right( $( "img" ).eq( 0 ).appendTo( "#container" ) );
 		}
 		function previous( event ) {
 			event.preventDefault();
-			center( $( "img:eq(0)" ), animate );
-			right( $( "img:eq(1)" ), animate );
-			left( $( "img:eq(2)" ).prependTo( "#container" ) );
+			center( $( "img" ).eq( 0 ), animate );
+			right( $( "img" ).eq( 1 ), animate );
+			left( $( "img" ).eq( 2 ).prependTo( "#container" ) );
 		}
 		$( "#previous" ).on( "click", previous );
 		$( "#next" ).on( "click", next );
@@ -76,9 +76,9 @@
 		});
 
 		$( window ).on( "resize", function() {
-			left( $( "img:eq(0)" ), animate );
-			center( $( "img:eq(1)" ), animate );
-			right( $( "img:eq(2)" ), animate );
+			left( $( "img" ).eq( 0 ), animate );
+			center( $( "img" ).eq( 1 ), animate );
+			right( $( "img" ).eq( 2 ), animate );
 		});
 	</script>
 </head>
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