server-side Javascript abstraction framework

 Spring JavaScript is a JavaScript abstraction framework that makes it easy to
 write unobtrusive JavaScript to progressively enhance a web page with behavior.
 The framework consists of a public JavaScript API along with an implementation
 that builds on the Dojo Toolkit. Spring.js aims to simplify the use of Dojo for
 common enterprise scenarios while retaining its full-power for advanced use
 cases.
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 Spring JavaScript can work with any server-side framework. The Web Flow 2
 distribution includes convenient integration between Spring JavaScript and
 Spring Web MVC for processing Ajax requests.