More than just snippets, HelloJS gives you multi-file "hello world" examples. Edit them with your own desktop editor. Your changes are automatically synchronized to a test website on Backlift.
The list is far from complete. Pick your favorite library, create a hello world example, send it to us using this form and we'll add it right away. All help is much appreciated.
Backlift lets you download example code, edit it in your Dropbox and see any all changes immediately on a live website.