Mark undefined as a primitve

nkronlage · nkronlage · commit 4a64ff214d9f · 2014-10-28T10:00:18.000-07:00
diff --git a/content/JavaScript/undefined.jsdoc b/content/JavaScript/undefined.jsdoc
@@ -4,6 +4,9 @@ undefined : Object
 not pass anything to the **return** statement. It is also the 
 value returned from a property that has not been set. 
 
+Primitive:
+true
+
 Spec:
 http://www.ecma-international.org/ecma-262/5.1/#sec-4.3.9
 
