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IJavascript

IJavascript is an npm package that implements a Javascript kernel for the Jupyter notebook (formerly known as IPython notebook). A Jupyter notebook combines the creation of rich-text documents (including equations, graphs and videos) with the execution of code in a number of programming languages.

The execution of code is carried out by means of a kernel that implements the IPython/Jupyter messaging protocol. There are kernels available for Python, Julia, Ruby, Haskell and many other languages.

Main Features

• Run Javascript code within a node.js session
• Hello, World!
• Graphical output for HTML, SVG, PNG, ...
• Asynchronous output
• Autocompletion: press TAB to complete keywords and object properties
• Object inspection: press Shift-TAB to inspect an object and show its content or, if available, its documentation

Installation

The instructions to install IJavascript are platform-dependent. For example, in Ubuntu 14.04, IJavascript and its prerequisites can be installed simply by running:

sudo apt-get install nodejs-legacy npm ipython ipython-notebook libzmq3-dev
sudo npm install -g ijavascript

For other platforms, please, refer to the installation notes.

Usage

To start an IPython notebook session with the IJavascript kernel, run:

ijs

This command should open the IPython notebook dashboard in your default web browser:

Here's a sample notebook that makes use of the IJavascript kernel:

Please, refer to the usage notes for further details.

Contributions

First of all, thank you for taking the time to contribute. Please, read CONTRIBUTING and use the issue tracker for any contributions: support requests, bug reports, enhancement requests, pull requests, submission of tutorials...

TO DO

• Split kernel into Jupyter and Javascript frameworks to help reuse code in the CoffeeScript and Babel kernels.
• Use Mocha test framework
• Update tutorial on global variables to discuss the use of var
• Add tutorial to demonstrate animated graphs and javascript injection
• Complete the implementation of IPython's messaging protocol v4.1
• Complete the implementation of IPython's messaging protocol v5.0

See TODO list in package NEL for additional items.