UJS Rails Plugin
- Out-of-the box caching using HTTP ETags and advanced behaviour caching
- Apply multiple behaviours at once with apply_behaviours
- Behaviour helpers to easily and unobtrusively apply scriptaculous effects
- :prevent_default option to cancel original event behaviour such as link following and form submission
For web standards, usability and accessibility lovers, this plugin should quickly become a staple. I know I’ll be trying it out soon.