This unobtrusive scripting support file is developed for the Ruby on Rails framework, but is not strictly tied to any specific backend. You can drop this into any application to:

- force confirmation dialogs for various actions; - make non-GET requests from hyperlinks; - make forms or hyperlinks submit data asynchronously with Ajax; - have submit buttons become automatically disabled on form submit to prevent double-clicking.

These features are achieved by adding certain "data" attributes to your HTML markup. In Rails, they are added by the framework's template helpers.

Node.js is an event-based server-side JavaScript engine.