Asynchronous JavaScript and XML (Ajax) is a web technique used to transfer data between a browser and server asynchronously without posting the web page to the server. "Asynchronously" implies that the processing of the web page continues while the Ajax request is sent to the server and a response is received from the server. The web page, or section(s) of the web page, is refreshed with the Ajax response without reposting the web page. Ajax has the following advantages over non-Ajax web applications.
- Reduced response time and reduced server load, as the complete web page is not reposted.
- Reduced bandwidth of web applications as only data is transferred and the HTML format is applied in the browser.
- Separation of data, format and style.
The book covers web search and RSS Feed with Ajax as well as form validation with Ajax frameworks for Java, JSP, JSF, and PHP. It discusses using Ajax in Oracle JDeveloper and is IDE based. JDeveloper has the following advantages over Eclipse IDE.
- JDeveloper 11g provides an integrated JavaScript Editor for Ajax/Web development.
- It also provides a PHP extension.
- JDeveloper has a built-in support for JSF and for JDBC.
Rezensionen / Stimmen
From the reviews:
"This technical reference is both a general guide to Asynchronous JavaScript and XML (Ajax) and a specific guide that focuses on a single development tool, Oracle JDeveloper 11g. . The book provides numerous Java screen shots and coding examples, helping users to step through their understanding of each process. . Useful for Ajax software developers using Oracle JDeveloper. Summing Up: Recommended. Upper-division undergraduates through professionals; technical program students." (H. J. Bender, Choice, Vol. 46 (2), October, 2008)
"It offers an overview of all of the options available for adding Ajax to an application developed with JDeveloper. . The summary tables of the key methods and properties would prove very useful to new developers. . For any JDeveloper user wishing to add Ajax to their application and unsure about which approach to take, this book would make an excellent resource, providing a very useful high-level overview." (Stephen Smith, Library & Information Update, July/August, 2009)
"This book will provide you with new knowledge concerning the binding of AJAX parts and the creation of a functional web AJAX application. . The examples are detailed enough for beginners to easily understand and implement them in their own web application. . This book is an ideal one for librarians who create and maintain web sites . . I would also recommend the book to students who learn AJAX. . All in all, the book is very useful, not too hard to read." (Tomislav Jakopec, International Cataloguing and Bibliographic Control, Vol. 38 (2), April/June, 2009)
"The book starts by explaining the basics and the core of Ajax. . The book is a well-written mix of different areas, with a lot of screen shots explaining the various steps needed to create Ajax-based applications. . The target readers for this book are developers who already know HTML, JavaScript, and XML, who want to produce their Websites using Ajax, and who also want to use a kind of programming environment. For this group, the book is highly recommended." (K. Waldhör, ACM Computing Reviews, June, 2009)
