This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Yes, chapter 4 surveys the Ajax capabilites of Protoype and the Dojo toolkit, along with jQuery and DWR.
Of course this chaper is not a comprehensive tutorial on the complete capabilities of all those libraries -- that could take a complete book for each -- but we focus on the Ajax-enabling portions of the libraries.