add docs on iterators

1 files changed, 19 insertions, 2 deletions

diff --git a/js/README.md b/js/README.md
index 8a46f598b..8e2a373da 100644
--- a/js/README.md
+++ b/js/README.md
@@ -9,8 +9,25 @@ then run:
 
 The news app uses [Traceur](https://github.com/google/traceur-compiler) to transpile ES6 into ES5. If you want to take a look at the features see [the language features reference](https://github.com/google/traceur-compiler/wiki/LanguageFeatures#language-features).
 
-* Modules can not be used since the code is inlined
-* The following iterators are available: **items**
+### Iterator
+The following iterators are defined and availabe:
+
+* **items**:
+
+	```js
+	// iterate over object key and value
+	for (let [key, value] of items(obj)) {
+		console.log(`object key: ${key}, object value: ${value}`)
+	}
+	```
+* **enumerate**:
+
+	```js
+	// iterate over object key and value
+	for (let [index, value] of enumerate(list)) {
+		console.log(`at position: ${index}, value is: ${value}`)
+	}
+	```
 
 ## Building
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