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AJAX, which stands for Asynchronous JavaScript and XML, is an outstanding and powerful approach used for creating dynamic websites. AJAX, acronym for Asynchronous Javascript and XML is the term whispered from almost every software developer mind and its waves are touching the network boundaries.
Ajax Applications Development has provided breakthrough in web application development. AJAX is a new way to define technology shifting web pages from HTML static pages to advance Java script and CSS enabled dynamic pages. AJAX is also called a free framework for fast creation of interactive cross-platform web experiences. This application has transformed the look, feels of web and has solved the major problem of web application of reloading.
AJAX uses Java script technology, HTML pages make asynchronous call to the server from which it fetches information that may be formatted as HTML, plain text, XML or Java Script Object Notation (JSON). To modify the Document Object Model (DOM) of the HTML page java script uses this content. Load of content on demand for various complex web applications has improved bandwidth usage by cutting down bandwidth consumption for complex functionalities.
However, AJAX has solved this major problem of pages reloading updating only the content which needs to be updated, interacting in the DOM dynamically with asynchronous calls to the server, pulling the data and displaying without the need of refreshing the whole page. With AJAX, web pages enhance user's interactivity and a new way to revolutionize the working of internet applications.
AJAX introduces an intermediary between the user and server called "AJAX Engine". Addition of this layer makes the application more responsive eliminating Start-Stop-Start-Stop nature of interaction on the web. Identifying particular state of application is difficult, this creates problem for user to bookmark specific application state. Also, iframe element used to populate browser history is not recommended by W3C. Websites using Ajax applications are generally not search engine friendly. Ajax has java script code that has compatibility problems with different browsers. Web analytics tracked records get cluttered with websites using Ajax technology as every event is tracked by analytics.
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