Ajax Support

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10.1. Ajax Support
In this section, we'll look at the three main classes that see most of the action in Prototype's Ajax code: Ajax.Request, Ajax.Updater, and Ajax.PeriodicalUpdaterall of which inherit from Ajax.Base. After that is the Ajax.Responders object, which handles global events related to Ajax calls.

10.1.1. Base Objects
The Ajax object serves as the root and namespace for Prototype's classes and methods that provide Ajax functionality: