Core: Handle IE11 bug with document.activeElement in iframes

Fixes #11539 Closes gh-1518
jquery · Mar 24, 2015 · 76c2755 · 76c2755
1 parent 1696405
commit 76c2755
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/ui/core.js b/ui/core.js
@@ -63,6 +63,13 @@ $.extend( $.ui, {
 			activeElement = document.body;
 		}
 
+		// Support: IE 11 only
+		// IE11 returns a seemingly empty object in some cases when accessing
+		// document.activeElement from an <iframe>
+		if ( !activeElement.nodeName ) {
+			activeElement = document.body;
+		}
+
 		return activeElement;
 	},