Only do the hasAttribute check if the method exists - IE falls back to the === null...

diff --git a/src/attributes.js b/src/attributes.js
index 608b8e3..1afcf2a 100644 (file)
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -332,7 +332,7 @@ jQuery.extend({
 
                        // Ensure that missing attributes return undefined
                        // Blackberry 4.7 returns "" from getAttribute #6938
-                       if ( !elem.attributes[ name ] && !elem.hasAttribute( name ) ) {
+                       if ( !elem.attributes[ name ] && (elem.hasAttribute && !elem.hasAttribute( name )) ) {
                                return undefined;
                        }