Merge pull request jashkenas#343 from janraasch/indexOf

_.indexOf and _.lastIndexOf proper sparse array support.
3rdandUrban-dev · Nov 23, 2011 · bfa4fe8 · bfa4fe8
2 parents 7653c5f + bf7a351
commit bfa4fe8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/underscore.js b/underscore.js
@@ -441,7 +441,7 @@
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
     return -1;
   };
 
@@ -450,7 +450,7 @@
     if (array == null) return -1;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
-    while (i--) if (array[i] === item) return i;
+    while (i--) if (i in array && array[i] === item) return i;
     return -1;
   };