Ajax: Creating Web Pages with Asynchronous JavaScript by Edmond Woychowsky PDF

By Edmond Woychowsky

ISBN-10: 0132272679

ISBN-13: 9780132272674

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

 

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

applications and you may 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

experience.

 

Edmond Woychowsky starts with basic strategies regarding merely HTML and simple JavaScript. Then,

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

you're no longer a professional on Ajax's underlying applied sciences; Woychowsky bargains 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 tips on how to write "functional" code, but additionally grasp layout styles for writing rocksolid,

high-performance Ajax purposes. you will additionally the way to use frameworks reminiscent of 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 movement 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 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 easiest Ajax net assets, together with Ajax-capable JavaScript libraries

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Additional info for Ajax: Creating Web Pages with Asynchronous JavaScript

Example text

1. Data Types As with its ancestor, the C programming language of Kernighan and 63 64 Ritchie, JavaScript supports a number of data types. Although the number isn't nearly as large as C, representatives of the basic data types are all present, and methods of describing your own data types exist. In fact, with only a little delving into the "dark arts," it is quite possible that many problems can be solved on the client side using JavaScript. 1. Numeric In JavaScript, all numbers are 64-bit double-precision floating-point numbers, whether they are floating point or integer.

When this is done, the result is the normal-looking web page shown in Figure 2-1. The way it behaves, however, is almost application-like, with parts of the visible page being updated each time the hidden frame does an unload/reload cycle. Figure 2-1. 5. An Ajax Encounter of the Second Kind As flexible and cross-browser capable as the "hidden frames" method of implementing Ajax is, all that has been accomplished is the "AJ" part of Ajax. Which is sort of like the sound of one hand clapping, and that usually means that Igor has been slacking off again.

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 in Listing 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, 34 35 either. Listing 2-5. > Listing 2-6.

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Ajax: Creating Web Pages with Asynchronous JavaScript by Edmond Woychowsky


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