Download e-book for kindle: Ajax Design Patterns by Mahemoff, Michael

By Mahemoff, Michael

ISBN-10: 0596101805

ISBN-13: 9780596101800

Ajax, or Asynchronous JavaScript and XML, exploded onto the scene within the spring of 2005 and continues to be the most well liked tale between net builders. With its wealthy mix of applied sciences, Ajax presents astrong starting place for growing interactive internet functions with XML or JSON-based internet prone by utilizing JavaScript within the browser to strategy the net server response.

Ajax layout Patterns exhibits you top practices which may dramatically enhance your internet improvement initiatives. It investigates how others have effectively handled conflictingdesign rules long ago after which relays that details 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 strategies that builders have stumbled on to make sure their Ajax functions are maintainable
  • Functionality and value: Describes the categories of person interfaces you are going to stumble upon in Ajax purposes, in addition to the hot varieties of performance that Ajax makes possible
  • Development: Explains the method getting used to watch, debug, and try Ajax applications

Ajax layout Patterns also will get you on top of things with center Ajax applied sciences, corresponding to XMLHttpRequest, the DOM, and JSON. Technical discussions are via code examples so that you can see for your self simply what is-and isn't-possible with Ajax. this convenient reference might help you to supply high quality Ajax architectures, streamline net program functionality, and increase the userexperience.

Michael Mahemoff holds a PhD in desktop technological know-how and software program Engineering from the college of Melbourne, the place his thesis was once ''Design Reuse in software program Engineering and Human-Computer Interaction.'' He lives in London and consults on software program improvement matters in banking, overall healthiness care, and logistics.

''Michael Mahemoff's Ajax layout Patterns is a very entire compendium of webapplication layout services, situated round yet no longer restricted to Ajax concepts. Polished nuggets of layout knowledge are supported via tutorials and real-world code examples leading to a booklet thatserves not just as an intermediate to professional instruction manual but in addition as an intensive reference for development wealthy interactive net applications.''
--Brent Ashley, distant scripting pioneer

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Additional resources for Ajax Design Patterns

Example text

Onkeyup = function( ) { clearTimeout(submitTimer); // Clears any previously scheduled submission } } Reload the application and you should see the delay between typing the word and seeing the results appear. We've now capped the number of browser-server calls to one per second, which is one style of Submission Throttling. It works using timers; as explained in the Scheduling (Chapter 7) pattern, JavaScript lets us set a one-off event in the future and cancel it too. The above code ensures that each keystroke schedules a call in one second and cancels any pending call.

Make the directories globally readable and executable). All the files throughout the four steps described next should go in this directory. 1. Business logic: the anagram web service We'll begin the web service by creating a backend module that knows only the business logic related to anagrams, and nothing about HTML. Since we're talking pure business logic, I'll just show you the entire file and skim over the details. php (or copy it from the code package):

It doesn't have to place the response directly onto the page, and in fact, it doesn't have to change the display at allit might just store the value for later on. Furthermore, the target URL could be any location on our server. More often that not, it's a dynamic script rather than a static HTML file like the message file used here. The URL will often contain CGI-style variables as input for the server-side script. 4. Dynamic Behavior in a Blink Part I: Introduction 37 38 Part I: Introduction To begin, go to the working directory (/tutorial/dynamic/).

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Ajax Design Patterns by Mahemoff, Michael

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