An Arbortext Publishing Engine JavaScript application is a subroutine function which takes two parameters, a Java request object and a Java response object. The Sottoprocesso Arbortext PE uses the Rhino JavaScript package to make Java objects accessible to JavaScript programs. Essentially, this means that JavasScript Arbortext Publishing Engine applications run in the same programming environment as Arbortext Publishing Engine Java applications. For more information on making Java available to JavaScript using LiveConnect, refer to the Calling Java from JavaSctipt section of the Programmer's Reference.

The Arbortext PE Request Manager processes requests for Arbortext Publishing Engine JavaScript applications by passing requests with the f query parameter with the value javascript to the request function com.arbortext.e3.FunctionJavascript. The request function allocates an Sottoprocesso Arbortext PE and passes the request to the Applicazione Arbortext PE Context (described in The Sottoprocesso Arbortext PE Application Context). The Applicazione Arbortext PE Context creates the request and response objects. Then, it directs the Sottoprocesso Arbortext PE JavaScript interpreter to evaluate the function specified in the function parameter of the HTTP request. The function must be defined in a .js file in a custom\init directory or in a .js file in custom\scripts which is loaded from custom\init. The returned value for the JavaScript function is ignored because the data must be transmitted to the client in the response object.

A JavaScript Applicazione Arbortext PE can access information about the request and set information to be returned as part of the response using the same interface as an Applicazione Arbortext PE written in Java. Unlike a Java Applicazione Arbortext PE, a JavaScript Applicazione Arbortext PE has no initialization or termination component.