May 2015
Beginner to intermediate
412 pages
8h 44m
English
Content preview from Primefaces Cookbook Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Polling – sending periodical AJAX requests
Polling is a way to poll a server periodically in order to trigger server-side changes or update parts of a web page. The polling technology in PrimeFaces is represented by the poll component. It is an AJAX-ified component that has the ability to send periodical AJAX requests.
In this recipe, we will update a feed reader periodically to show current sports news. A growl component will be updated with the same interval too in order to show the time of the last feed update.
How to do it…
The p:poll component in the following code snippet invokes the showMessage() listener method every 10 seconds and updates a feed reader and a growl. The listener method generates the current time. Furthermore, we will define ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.