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

By Edmond Woychowsky

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


Using Ajax, you could construct net functions 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 with basic thoughts regarding in simple terms HTML and easy JavaScript. Then,

one step at a time, he introduces suggestions for construction more and more wealthy purposes. don't fret if

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

JavaScript to the XMLHttpRequest item. you are going to 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 methods to write "functional" code, but in addition grasp layout styles for writing rocksolid,

high-performance Ajax functions. you will additionally methods to use frameworks resembling Ruby on

Rails to get the task performed fast.


  • Learn how Ajax works, the way it developed, and what it is reliable for
  • Understand the movement 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 components of a page
  • Discover the easiest Ajax internet assets, together with Ajax-capable JavaScript libraries

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

Sample text

In this example, there is nothing left over, so it is the equivalent of coding zero. This results in the first frame being visible and the second frame being hidden. In essence, this is a sneaky way to hide what's going on from prying eyesnamely, the user. The next two listings are the visible frame, Listing 2-2, and the hidden frame, Listing 2-3. Listing 2-3 is where the real mad science happens. 2. Enter JavaScript Listing 2-2 is short and sweet, basically two short JavaScript functions that don't appear to do anything.

Also, there is a little-known law of computer bookslet's call it Ed's Law of Computer Books. " It is true; I've lost count of the number of times that the information needed was in a book that was still in my car. So if the car was parked somewhere nearby, I'd trek downstairs and out to my car, grab the book, and then go back upstairs, only to find that I needed yet another book. This is the purpose of this section: so that I can plant my tush and not have to travel out to my car. If, unlike myself, you're not too lazy to carry more than one book, consider this chapter something of a refresher on a few of the basic building blocks of Ajax.

Description); } } /* Handle server response to XMLHTTP requests. text; } catch(e) { } }

Listing 2-8. > If this were CSI, Columbo or The Thin Man, now is the time when the hero explains how the deed was done. It goes something like this: The HTML page loads, which causes the onload event handler, initialize, to fire. In this function, theXMLHttpRequest object's open method is invoked, which only sets the method (POST), gives the relative URL of a web service, and states that the request will be asynchronous (true).

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