The document discusses Jellyfish, a tool created by Matthew Eernisse to run JavaScript code across different environments and browsers simultaneously. It provides demonstrations of using Jellyfish to run JavaScript on browsers, mobile devices, and headless services in parallel. The goal of Jellyfish is to allow JavaScript code to be easily executed on any environment through a common API.

1. @admc

2. Introduction
I’m beyond stoked to be here at JSCONF!!!
I write JS at Sauce Labs

3. History
Windmill - 2007
Node.JS - Appears
Soda - Node drives browsers!
WebDriver - Starts talking about mobile
JSDOM - Spurs headless
Why can’t I run my JS blurb everywhere
at once? (shower idea)

4. Breakdown
What: Does my JavaScript work *THERE*?
Why: The beauty of JS is the growing reach
How: A Common JavaScript Execution API

5. Mantra
Brittle
Courtesy - @hugs

6. Browser Dance
DEMO

7. The Picture

8. Mobile
WebOS -- By the end of the week -- *DEMO*
Android -- Too slow, working on Android x86
IOS -- System proxy, need a launcher -- *DEMO*
Not checked into GH :-(

9. Using it!
Install Node
npm install jellyfish
jellyfish shell/firefox/chrome
browser.js("alert('test')", function(o){console.log(o)})

10. A Script!
var assert = require('assert')
, jellyfish = require('jellyfish');
var zombie = jellyfish.createZombie();
zombie.go("http://www.wikipedia.com")
.js("document.title", function(o) {
assert.equal(o.result,"Wikipedia")
})

11. WebDriver
Could not drive WebDriver from Node
Created WD.js: “npm install wd”
Currently supports: get, execute, close
JSONWireProtocol is big, help me!
Thanks @automatedtester
https://github.com/admc/wd

12. Architecture
Lightweight Node HTTP Proxy
Environment Definitions
Start, Stop, JS Eval
Base API - JS, JSFile, JSUrl

13. Architecture Picture!
Dispatch/Report
Proxy
Browsers
Run
DIspatch/Report
Jellyfish
Headless
Services
Other
Start/ Stop
Node JS

14. DEMOS!
Parallel Sessions
Parallel Environments
Parallel Runs of Parallel Sessions and Environments
I’ve gone cross-eyed

15. Target Requirement
You can build a Jellyfish Environment Target (JET)
Javascript Eval API -- or HTTP Proxy support
Start, Stop
A little JS chops
Help me get every single one!

16. Reporting
CouchDB
One liner
var jf = require(‘jellyfish’)
ff = jellyfish.createFirefox(function(i) { i.couch(); })

17. The Future
More Environments! (ssh, x-node versions, fridge, car)
Simple plugin architecture
HTTPS
Windows?

18. Use Jellyfish for Good! (not evil)
Load Testing
App Testing
JavaScript Analysis
Performance
Up-voting pictures of yourself

19. The Point
I want to literally run my JavaScript everywhere!
You are all insanely talented
Help me make Jellyfish awesome

20. Write Shareable JS!
Tuesday May 3, 2011
Heaven and Hell: JavaScript Everywhere
Matthew Eernisse
(I bet his intro music is going to be Rush)

21. Q&A
http://www.jelly.io
https://github.com/admc/jellyfish
@getjelly