AJAX Asynchronous Java Script and XML AJAX introduction

AJAX Asynchronous Java. Script and XML

AJAX introduction o Ajax applications , look and act more like desktop applications. ex. writely n Ajax applications can add or retrieve new data for a page it is working with and the page will update immediately without reloading. ex. maps Classic model AJAX model

Component technologies o o o DHTML ( Dynamic HTML ) XML (e. Xtensible Markup Language ) CSS ( Cascading stylesheets ) Document object model Java. Script XMLHttp. Request

Classic model & Ajax model

Classic & Ajax - example o Classic Page 1 o Ajax Page 1 Http Request Page 2

Classic web application model (synchronous)

Ajax web application model (asynchronous)

WHAT’S NEXT o o Spending the time and money required to install applications on every computer. Ajax also could be useful for the growing number of Web applications for mobile devices. Ajax may prove interesting to developers now, they may turn to versions of Flash and other technologies in the future.

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