JavaScript-thepowerful,object-basedscriptinglanguagethatcanbeembeddeddirectlyintoHTMLpages-hasearneditsplaceintheWebdeveloper'stoolkit,totheextentthatit'snowconsideredrequiredknowledgeforWebdevelopers.YoucanuseJavaScripttocreatedynamic,interactiveapplicationsthatruncompletelywithinaWebbrowser.JavaScriptisalsothelanguageofchoicefordevelopingDynamicHTMLcontent.BecauseitssyntaxisbasedonthepopularprogramminglanguagesC,C++,andJava,JavaScriptisfamiliarandeasytolearnforexperiencedprogrammers.Atthesametime,it'saninterpretedscriptinglanguage,providingaflexible,forgivingprogrammingenvironmentfornewprogrammers.ThistextprovidesacompleteoverviewofthecoreJavalanguageandclient-sidescriptingenvironment,aswellasquick-referencematerialoncoreandclient-sideobjects,methods,andproperties.TheneweditionhasbeenrevisedtocoverJavaScript1.5,andisparticularlyusefulfordevelopersworkingwiththelateststandards-compliantwebbrowsers,suchasInternetExplorer6,Netscape7,andMozilla.Idealasanintroductionforbeginnersandaquickreferenceforadvanceddevelopers,thispocket-sizedbookiseasytotakeanywhereandservesasacompanionvolumetoJavaScript:TheDefinitiveGuide,4thEdition.O'Reilly'sPocketReferencesofferawealthofimportantdetailsinaconcise,well-organizedformat,thesehandybooksaimtodeliverjustwhatyouneedtocompletethetaskathand.

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