Core: Fix focusable detection for image maps

The attribute selector requires quotes to be valid, but only new (unreleased) Sizzle has this requirement.
jquery · Jul 30, 2014 · d6d15b4 · d6d15b4
1 parent 9895cb5
commit d6d15b4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ui/core.js b/ui/core.js
@@ -93,7 +93,7 @@ function focusable( element, isTabIndexNotNaN ) {
 		if ( !element.href || !mapName || map.nodeName.toLowerCase() !== "map" ) {
 			return false;
 		}
-		img = $( "img[usemap=#" + mapName + "]" )[0];
+		img = $( "img[usemap='#" + mapName + "']" )[ 0 ];
 		return !!img && visible( img );
 	}
 	return ( /input|select|textarea|button|object/.test( nodeName ) ?