New PDF release: Ajax: Creating Web Pages with Asynchronous JavaScript

By Edmond Woychowsky

ISBN-10: 0132272679

ISBN-13: 9780132272674

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

 

Using Ajax, you could construct net purposes with the sophistication and usefulness 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 consultant to Ajax for each internet and open resource developer, regardless of

experience.

 

Edmond Woychowsky starts with basic strategies concerning in simple terms HTML and simple JavaScript. Then,

one step at a time, he introduces concepts for development more and more wealthy functions. don't fret if

you're now not knowledgeable on Ajax's underlying applied sciences; Woychowsky bargains 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 how one can write "functional" code, but in addition grasp layout styles for writing rocksolid,

high-performance Ajax purposes. you are going to additionally tips on how to use frameworks equivalent to Ruby on

Rails to get the task performed fast.

 

  • Learn how Ajax works, the way it advanced, and what it truly is stable for
  • Understand the stream of processing in Ajax applications
  • Build Ajax purposes 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 help 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 easiest Ajax internet assets, together with Ajax-capable JavaScript libraries

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Additional info for Ajax: Creating Web Pages with Asynchronous JavaScript

Example text

Not a big deal," you say. Well, it could be. The part of the document that isn't well formed doesn't have to be glaring, like a foot being attached to the forehead. Because an XHTML document is essentially XML, simply following the HTML practices that we've followed for years is enough to get us into trouble. Consider the following two HTML input statements: Both statements are perfectly acceptable HTML, but as XHTML, they don't make the grade because neither is well formed.

1. A World Unseen Any developer familiar with the use of frames and framesets will find Listing 2-1 pretty normal looking. However, one item isn't plain vanilla: the rows="100%,*" attribute on the frameset element, which states that the first frame gets 100 percent of available rows. The asterisk (*) states that anything left over goes to the second frame. 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.

It goes something like this: The HTML page loads, which causes the onload event handler, initialize, to fire. In this function, the XMLHttpRequest object's open method is invoked, which only sets the 36 37 method (POST), gives the relative URL of a web service, and states that the request will be asynchronous (true). Next, the onreadystatechage event handler is set; this is the function that handles what to do when the web service responds. Finally, the send method of the XMLHttpRequest object is invoked, sending our request on its merry way.

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Ajax: Creating Web Pages with Asynchronous JavaScript by Edmond Woychowsky


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