October 2006
Intermediate to advanced
288 pages
5h 55m
English
Content preview from Ajax for Web Application Developers
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Using the Singleton Object
In the previous section, we learned how to create an object using the Singleton pattern. Now we will discover how to access it from other objects in a web application. The AjaxUpdater object can be used in any other object throughout your web application, all we need to do is import the file.
<script type="text/javascript" src="../javascript/utils/AjaxUpdater.js"></script>
Because the object instantiates itself, it is usable from the moment the file is loaded and can be called directly by name from any object that is loaded into the same page. Using a Singleton object method and property, such as the AjaxUpdater, is extremely easy. The following line of code makes an XHR and sets a callback method, which waits for the ...
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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.