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-rw-r--r--ui/jquery.ui.effect.js9
1 files changed, 9 insertions, 0 deletions
diff --git a/ui/jquery.ui.effect.js b/ui/jquery.ui.effect.js
index e45b76de0..860eb5706 100644
--- a/ui/jquery.ui.effect.js
+++ b/ui/jquery.ui.effect.js
@@ -754,6 +754,15 @@ function styleDifference( oldStyle, newStyle ) {
return diff;
}
+// support: jQuery <1.8
+if ( !$.fn.addBack ) {
+ $.fn.addBack = function( selector ) {
+ return this.add( selector == null ?
+ this.prevObject : this.prevObject.filter( selector )
+ );
+ };
+}
+
$.effects.animateClass = function( value, duration, easing, callback ) {
var o = $.speed( duration, easing, callback );