The JavaScript public API is the beginnings of the client side portion of the JavaServer Faces / Ajax standard. The JavaServer Faces 2.0 Expert Group includes members representing other JavaServer Faces / Ajax frameworks such as RichFaces, ADF Faces (Trinidad) and ICEfaces.

We're definitely exploring new territory here, as this is the first time that a public JavaScript API has been introduced with JavaServer Faces to the JCP. It may be the first time a public JavaScript API has been introduced to the JCP, period.