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 net builders. With its wealthy mix of applied sciences, Ajax presents astrong beginning for growing interactive net functions with XML or JSON-based internet providers by utilizing JavaScript within the browser to technique the internet server response.

Ajax layout Patterns exhibits you top practices which may dramatically increase your net improvement tasks. It investigates how others have effectively handled conflictingdesign rules some time past after which relays that details on to you.

The styles defined within the booklet fall into 4 categories:

  • Foundational expertise: Examines the uncooked applied sciences required for Ajax development
  • Programming: Exposes ideas that builders have came upon to make sure their Ajax functions are maintainable
  • Functionality and value: Describes the categories of consumer interfaces you are going to encounter in Ajax purposes, in addition to the recent different types 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 on top of things with middle Ajax applied sciences, corresponding to XMLHttpRequest, the DOM, and JSON. Technical discussions are through code examples so that you can see for your self simply what is-and isn't-possible with Ajax. this convenient reference can help you to supply top of the range Ajax architectures, streamline net software functionality, and increase the userexperience.

Michael Mahemoff holds a PhD in laptop technology and software program Engineering from the collage 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 matters in banking, well-being care, and logistics.

''Michael Mahemoff's Ajax layout Patterns is a really entire compendium of webapplication layout services, headquartered round yet now not restricted to Ajax innovations. Polished nuggets of layout knowledge are supported through 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 internet applications.''
--Brent Ashley, distant scripting pioneer

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Additional resources for Ajax Design Patterns

Sample text

You can, if you like, confirm this by visualizing the DOM after running the script above. There are numerous visualization tools, described in DOM Inspection (Chapter 18). In the above code, greeting is a new DOM node that's appended to the existing sandbox DOM node. Part I: Introduction 33 34 Part I: Introduction After creating greeting, we set its background color as a CSS style property, and we use innerHTML as a simple means of setting its content. 2. $( ) Convenience function Now, a quick refactoring.

Button, which is now obsolete. 2. Progress Indicator The input field is limited to five characters because long queries take a very long time. But even with five characters, the delay will be noticeable, especially in a real-world context, so we'll ease the pain with a Progress Indicator (Chapter 14). This is an animated GIF that's always present on the page, with its visibility toggled on and off, depending on whether we're waiting for a response. gif"). Next, we're going to introduce a CSS file with the styles for waiting and notWaiting modes.

Flash Flash has an interesting role in the Ajax world. It's clear that Ajax is stronger from a standards perspectiveyou can take a regular form and sprinkle some Ajax onto it by way of effects and dynamic validation. Even better, the form can be made to work with or without Ajax technologies available. Flash, however, does many things Ajax can't, such as hardware access, rich graphics, and local file storage. And both technologies are moving targets. Will Adobe steer Flash towards being a direct replacement for Ajax or more of a complementary technology?

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