[IPython-dev] Notebook CodeCell for editing and executing javascript

Brian Granger ellisonbg at gmail.com
Tue Dec 18 18:01:43 EST 2012


I am going to be travelling for a day, but will reply soon.


On Tue, Dec 18, 2012 at 5:02 AM, Nissim Karpenstein <nissimk at gmail.com> wrote:
> Hi,
> I'm new here and I wanted to run this by the group before I start working on
> it.  I'm interested in building a facility to use the notebook to edit and
> execute javascript code for presenting data from the python kernel.  I know
> there is a magic function and there is some sort of way to have python code
> render js in <script> tags, and you can put javascript in the Markdown
> cells, but I was envisioning something more like a standard codecell, but
> execution is handled by the browser rather than the kernel.
> Let's say you've loaded some data and run some computations in your python
> kernel and now you want to display results in the notebook using some
> javascript library like d3, datatables or processing.  If you want to do
> this by writing the javascript code in a CodeCell and evaluating that code
> in the browser you need a couple of things:
> 1) ability to change a code cell language to javascipt in the notebook
> frontend.  I saw that there is a language field in the notebook file format
> for CodeCell but it is always = python.
> 2) facility to have the browser javascript engine evaluate the contents of
> the javascript CodeCell when it is executed by the user
> 3) http REST api that will return json representations of Python objects
> that exist in the kernel.  (this may already exist, I don't really
> understand the kernel communication protocol yet).
> There are probably some more things like the ability to add CSS, HTML, js
> and image resources to the server that it can then serve back to the client.
> I see that there's been a lot of discussion related to this in the plugins
> thread, but maybe there can also be a method for accessing resources from
> the network and then telling the notebook server to serve them from some
> path.
> I'd like to implement this and I had a couple of questions:
> 1) Does this fit in with your ideas for the notebook or is editing non
> python code in CodeCell outside of the vision?
> 2) Should there be another Dropdown for the language of the CodeCell or
> should there be a javascript option added to the existing select box.
> Thanks
>    -Nissim
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Brian E. Granger
Cal Poly State University, San Luis Obispo
bgranger at calpoly.edu and ellisonbg at gmail.com

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