AJAX: Creating Web Pages with Asynchronous JavaScript and by Edmond Woychowsky

By Edmond Woychowsky

The effortless, Example-Based advisor to Ajax for Every internet Developer


Using Ajax, you could construct net purposes with the sophistication and value of conventional desktop

applications and you'll do it utilizing criteria and open resource software program. Now, for the 1st time,

there's a simple, example-driven advisor to Ajax for each net and open resource developer, regardless of



Edmond Woychowsky starts off with basic suggestions concerning in basic terms HTML and easy JavaScript. Then,

one step at a time, he introduces suggestions for development more and more wealthy functions. don't be concerned if

you're now not knowledgeable on Ajax's underlying applied sciences; Woychowsky deals refreshers on them, from

JavaScript to the XMLHttpRequest item. you will additionally locate a number of open resource applied sciences and open

standards all through, starting from Firefox to Ruby and MySQL.


You'll not just how you can write "functional" code, but additionally grasp layout styles for writing rocksolid,

high-performance Ajax functions. you will additionally the way to use frameworks equivalent to Ruby on

Rails to get the activity performed fast.


  • Learn how Ajax works, the way it developed, and what it is strong for
  • Understand the stream of processing in Ajax applications
  • Build Ajax functions with XML and the XMLHttpRequest object
  • Integrate back-end code, from Hypertext Preprocessor to C#
  • Use XSLT and XPath, together with XPath Axis
  • Develop client-side Ajax libraries to aid code reuse
  • Streamline improvement with Ruby on Rails and the Ruby programming language
  • Use the cross-browser HTML DOM to replace elements of a page
  • Discover the simplest Ajax net assets, together with Ajax-capable JavaScript libraries

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Extra info for AJAX: Creating Web Pages with Asynchronous JavaScript and XML

Sample text

Using the XMLHttpRequest object, the second example is dead on as to what is expected from an Ajax application. Broken are the bonds that limit updates to the unload/reload cycle that has been confronting us on the Web since Day 1. In addition, XML plays well with the concept of reducing traffic. The third and final example pushes Ajax to the current limits with the addition of XSLT to the mix. XSLT allows XML to be twisted and stretched into any conceivable shape that we can imagine. No longer are our creations limited to the parts that we can dig up here and there; we can make our own parts on demand.

In addition, to all elements being either closed or self-closing, the tags must always match up in order. This means that the XML document in Listing 2-5 is well formed but the XML document inListing 2-6 is not well formed. In a nutshell, "well formed" means that there is a right place for everything. Feet are a good example of this: Imagine if Igor used two left feet; the monster wouldn't be well formed and wouldn't be able to dance, either. Listing 2-5. > Listing 2-6.

Of course, there were some common elements, such as shrimp, butter, and garlic, but the plethora of little extras added made each dish unique. The same can be said of Ajax. Starting with a few simple ingredients, such as HTML and JavaScript, it is possible to cook up a web application with the feel of a Windows or, if you prefer, a Linux application. You might have noticed earlier that my ingredients list omitted XML; the reason for that omission is that XML is one of those optional ingredients.

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