Ajax Design Patterns by Mahemoff, Michael

By Mahemoff, Michael

Ajax, or Asynchronous JavaScript and XML, exploded onto the scene within the spring of 2005 and continues to be the most popular tale between internet builders. With its wealthy mix of applied sciences, Ajax offers astrong beginning for growing interactive net purposes with XML or JSON-based internet companies through the use of JavaScript within the browser to procedure the internet server response.

Ajax layout Patterns exhibits you most sensible practices that may dramatically enhance your net improvement tasks. It investigates how others have effectively handled conflictingdesign ideas some time past after which relays that info on to you.

The styles defined within the ebook fall into 4 categories:

  • Foundational know-how: Examines the uncooked applied sciences required for Ajax development
  • Programming: Exposes recommendations that builders have stumbled on to make sure their Ajax purposes are maintainable
  • Functionality and usefulness: Describes the kinds of consumer interfaces you are going to stumble upon in Ajax purposes, in addition to the hot sorts of performance that Ajax makes possible
  • Development: Explains the method getting used to watch, debug, and try out Ajax applications

Ajax layout Patterns also will get you in control with middle Ajax applied sciences, comparable to XMLHttpRequest, the DOM, and JSON. Technical discussions are by way of code examples so that you can see for your self simply what is-and isn't-possible with Ajax. this convenient reference may also help you to supply top of the range Ajax architectures, streamline net program functionality, and enhance the userexperience.

Michael Mahemoff holds a PhD in desktop technology and software program Engineering from the college of Melbourne, the place his thesis used to be ''Design Reuse in software program Engineering and Human-Computer Interaction.'' He lives in London and consults on software program improvement concerns in banking, wellbeing and fitness care, and logistics.

''Michael Mahemoff's Ajax layout Patterns is a very accomplished compendium of webapplication layout services, headquartered round yet no longer restricted to Ajax strategies. Polished nuggets of layout knowledge are supported by means of tutorials and real-world code examples leading to a e-book thatserves not just as an intermediate to professional guide but additionally as an in depth reference for development wealthy interactive net applications.''
--Brent Ashley, distant scripting pioneer

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Additional resources for Ajax Design Patterns

Sample text

In an ideal world, the same functionality would still be available, albeit with less bells and whistles. But even if you need to sacrifice functionalityand you often willit should be done in a graceful manner. 3. Ajax Patterns Overview The Ajax Patterns show how people have used the design principles effectively in real-world Ajax applications. It might seem funny that we can have so many patterns about Ajax, a term that was coined only a few months before work on these patterns began. However, the ideas are not new; there were many Ajax features on the Web before the term came about to describe them.

2. Presentation: initial HTML The initial HTML file contains the basic display detaila form and a list of anagramsand also pulls in the required JavaScript.

Point your browser to the HTML; you should see the heading and the form, but probably not the results area as it's initially empty. phtml packaged in the conventional version. First, the "form" is not a true HTML

element because we don't need the browser to submit it to the server; our script will issue the query manually.

You can check it by clicking on the Find Anagrams! phtml. You might also monitor the browser-server traffic using a tool mentioned in Traffic Sniffing (Chapter 18). Once the script has returned successfully, updateAnagramsDisplay( ) is called. innerHTML += anagrams[i] + "
"; } } Ajaxagram should now work as described earlier. Congratulations, you've built a working Ajax application! You built it using several of the patterns described in the first part of the Ajax Patterns languagethe patterns of foundational technologies.

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