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Automatically update a Web page with dynamic elements

Posted: October 20, 2009	Published: October 13, 2009
Author: Li Lin	Publisher: IBM

You may know how to hide and display optional JavaServer Faces (JSF) components by using JavaScript and Cascading Style Sheets (CSS) in standard JSF components. To do this, you would first need to identify all JSF components and write them into JSF pages. But, that is impossible to do when you are developing a Web page that contains dynamic elements that are unknown until run time. With this article, learn how you can clear old UI components while automatically updating the dynamic elements of a Web page, as well as how to use Java™ code to add new elements and put them into their proper spot on a Web page. You'll also learn how to bind different event handlers to different dynamic elements of a Web page, how to register a listener listening to changes of server-side data to invoke a page refresh, and how to use Asynchronous JavaScript and XML (Ajax) techniques to refresh only the dynamic parts of the Web page.

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