Merge pull request jashkenas#3281 from jisaacks/master

Allow Collection.at to accept negative indexes
baig · Sep 25, 2014 · 4927b6e · 4927b6e
2 parents c349965 + bcd7549
commit 4927b6e
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diff --git a/backbone.js b/backbone.js
@@ -826,6 +826,7 @@
 
     // Get the model at the given index.
     at: function(index) {
+      if (index < 0) index += this.length;
       return this.models[index];
     },
 

diff --git a/test/collection.js b/test/collection.js
@@ -117,8 +117,9 @@
     equal(col.get(101).get('name'), 'dalmatians');
   });
 
-  test("at", 1, function() {
+  test("at", 2, function() {
     equal(col.at(2), c);
+    equal(col.at(-2), c);
   });
 
   test("pluck", 1, function() {