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title: Rocky.js JavaScript API
description: |
  Information on using JavaScript to create watchfaces with Rocky.js
guide_group: rocky-js
menu: false
permalink: /guides/rocky-js/
generate_toc: false
hide_comments: true
---

This section of the developer guides contains information and resources
surrounding creating Pebble watchfaces using the Rocky.js JavaScript API.

Rocky.js is ECMAScript 5.1 JavaScript running natively on Pebble smartwatches,
thanks to
[our collaboration](https://github.com/Samsung/jerryscript/wiki/JerryScriptWorkshopApril2016)
with [JerryScript](https://github.com/pebble/jerryscript).

![Rocky >{pebble-screenshot,pebble-screenshot--time-red}](/images/blog/2016-08-16-jotw.png)

At present, Rocky.js can only be used to create watchfaces, but we're adding
more APIs and functionality with every release.


## Contents

{% include guides/contents-group.md group=page.group_data %}