Slides from OSCON 2011 http://www.oscon.com/oscon2011/public/schedule/detail/18579 JavaScript is the world’s most popular language – it is virtually everywhere. And once you learn it (or you’re already familiar with it from some browser scripting) you can leverage it to accomplish a great deal of programming and automation tasks. - choose node.js for your next server-side web app - automate sysadmin tasks with JavaScript shell scripts - improve your (and your visitor’s) browsing experience with bookmarklets and browser extensions - automate common PhotoShop tasks - extend some of your favorite apps (e.g. DreamWeaver) - create desktop GUI apps that run on Windows, Mac and Linux using XULRunner - create iPhone and Android apps with Titanium or PhoneGap

1. JavaScript is Everywhere Stoyan Stefanov OSCON July 27, 2011

2. The Future is here and it's widely distributed

3. "Write once, run everywhere" JavaScript is everywhere

4. Learn one language do everything

6. I'm biased so let's just do it

9. MVC? In-M-Out

10. In-M-Out -> UI, presentation -> "Business" logic, core, brains -> UI, presentation Input Model Output

11. and the rest is…CODE & DEMOS

12. m.js knows all the chords

13. CLI command-line interface

14. CLI jsc rhino node cscript exe

21. WebService with node.js

24. Web Site/App JavaScript's natural habitat: the browser

26. Bookmarklet smaller version of web (thanks, media queries!)

28. Browser extension

31. Photoshop scripting to generate 100s chord PNGs

32. Photoshop IDE: ExtendScript Toolkit log actions to .js app .documents[0] .layers .getByName('ha') .visible = true;

35. Desktop app for Mac, Windows, Linux via XULRunner

39. More desktop for Windows

40. lib and exe DLL Windows .exe

41. Native iPhone app with Titanium

42. Options Titanium Mobile: compiles JS to Obj-C PhoneGap Runs your JS/HTML(5) starts with about:blank-likepage need a JS toolkit, e.g. Sencha Touch or jQuery Mobile to mimic native controls

45. And more… Titanium desktop Mac Widgets Yahoo Widgets – work on TVs too Adobe Air PhoneGap (+Sencha Touch) Next Windows OS …

46. JavaScript everywhere If you're on a deserted island with virtually any device (and infinite battery life) you can still write code and be creative

47. Just type this URL: javascript:alert(eval(prompt('What?')))

48. Stoyan Stefanov@stoyanstefanovhttp://phpied.com/files/jseverywhere.zipThank you!