Ensure that null/undefined args don't choke on native indexOf

rwaldron · rwaldron · commit dcf94a58c741 · 2012-12-26T13:34:38.000-05:00
Signed-off-by: Rick Waldron &lt;waldron.rick@gmail.com&gt;
diff --git a/src/core.js b/src/core.js
@@ -587,7 +587,7 @@ jQuery.extend({
 	},
 
 	inArray: function( elem, arr, i ) {
-		return core_indexOf.call( arr, elem, i );
+		return arr == null ? -1 : core_indexOf.call( arr, elem, i );
 	},
 
 	merge: function( first, second ) {
