ZKisanopen-sourcewebdevelopmentframeworkthatenableswebapplicationstohavetherichuserexperiencesandlowdevelopmentcoststhatdesktopapplicationshavehadforyears.ZKincludesanAjax-basedevent-drivenengine,richsetsofXMLUserInterfaceLanguage(XUL)andXHTMLcomponents,andamarkuplanguage.TheZKrichclientframeworktakestheso-calledserver-centricapproach:thecontentsynchronizationofcomponentsandtheeventpipeliningbetweenclientsandserversareautomaticallydonebytheengineandAjaxplumbingcodesarecompletelytransparenttowebapplicationdevelopers.Therefore,theendusersgetrichuserinterfaceswithsimilarengagedinteractivityandresponsivenesstothatofdesktopapplications,whileforprogrammers,developmentremainssimilarinsimplicitytothatofdesktopapplications.ThisbookisaDeveloper'sGuidethatstepsyouthroughtheZKframeworkwithexamples.ItstartswithinstallingandconfiguringZKandtakesyouontointegrateitwithotherframeworks.Bythetimeyouarethroughthebookyouwillbeabletobuildanapplicationonyourown.