Download e-book for iPad: Ajax: Creating Web Pages with Asynchronous JavaScript by Edmond Woychowsky

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 internet functions with the sophistication and usefulness 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 internet and open resource developer, regardless of

experience.

 

Edmond Woychowsky starts off with easy thoughts related to merely HTML and uncomplicated JavaScript. Then,

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

you're now not a professional 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 you can write "functional" code, but in addition grasp layout styles for writing rocksolid,

high-performance Ajax functions. you will additionally find out how to use frameworks akin to Ruby on

Rails to get the task performed fast.

 

  • Learn how Ajax works, the way it developed, and what it really is sturdy 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 simplest Ajax internet assets, together with Ajax-capable JavaScript libraries

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Extra resources for Ajax: Creating Web Pages with Asynchronous JavaScript

Sample text

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. Thankfully, there's another parteh, make that technologyavailable: XML. The problem with XML is that it has developed a reputation of being difficult; however, it doesn't have to be. Just keep in mind that, in those situations, code has a tendency to follow you around, like Igor.

Sounds pretty powerful, doesn't it? Listing 2-9. 0'); var objXMLHTTP; /* Obtain the initial XML document from the web server. */ function initialize() { doPOST(true); } /* Use the XMLHttpRequest to communicate with a web service. description); } } /* Construct a SOAP envelope. xsl'; 39 strSOAP += ''; } strSOAP += ''; strSOAP += ''; return(strSOAP); } /* Handle server response to XMLHTTP requests. output; break; default: alert('error'); break; } } catch(e) { } }

39 40 Listing 2-10.

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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