Advanced Ajax. Architecture and Best Practices by Shawn M. Lauriat

By Shawn M. Lauriat

“I a great deal loved how this e-book covers the complete Ajax program lifecycle and never merely coding suggestions. an individual who's seeking to develop into a qualified front-end developer will savour the architectural perception and most sensible practices added by means of this book.”  — Andi Gutmans, Co-Founder & Co-Chief expertise Officer of Zend Technologies

 

Mission-Critical Ajax: Maximizing Scalability, functionality, defense, Reliability, and Maintainability

 

Advanced Ajax: structure and top Practices is the definitive consultant to construction business-critical, production-quality internet functions with Ajax. Shawn M. Lauriat systematically addresses the layout, structure, and improvement concerns linked to Ajax, supplying confirmed styles and strong code examples to be had in no different publication. You’ll locate most sensible practices for addressing the total spectrum of concerns firm Ajax builders face: scalability, functionality, safeguard, reliability, flexibility, maintainability, and reusability.

 

Writing for skilled net builders, Lauriat offers clean rules and chic strategies: meaty technical content material, awarded with unprecedented readability. among the themes he covers in extraordinary intensity: cleanly imposing JavaScript customized occasions to lessen coupling and to reinforce flexibility; overcoming Ajax’s conventional accessibility boundaries; lowering community latency via compression and different options; and masses extra. assurance includes 

  • Planning Ajax interfaces for simplicity, readability, and intuitiveness
  • Creating scalable, maintainable architectures for client-side JavaScript
  • Using the newest instruments to profile, validate, and debug client-side code
  • Architecting the server part for protection and performance, whereas proscribing loaded information, gadgets, and activities to present requests
  • Protecting opposed to the main common and demanding Ajax protection dangers
  • Optimizing each section of an Ajax software, from server-side scripts to database interactions
  • Introducing state of the art Ajax: video game improvement, Ajax with canvas, and Ajax for firm applications

About the internet Site

This book’s significant other website (http://advancedajax.frozen-o.com) doesn’t simply offer the entire code: It indicates code examples in action, as construction blocks of a true net software interface.

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Extra info for Advanced Ajax. Architecture and Best Practices

Example text

When the script suddenly works with hundreds (or even thousands) of elements, IE especially will have a considerable performance hit. Even taking away performance considerations for a moment, the second select() definition has greater complexity to it, and, as such, has more chances of breaking; in addition, it takes more work to change its behavior when necessary. 5 What CSS and JavaScript Have in Common You can use both CSS and JavaScript non-intrusively, in that the user should have the ability to disable one or both without losing any functionality or the ability to read and use the interface.

The button or link should never use a generic and uninformative “click here” or “submit” when the title of the page or “save profile” makes much more sense. In addition, the interface should never take the user by surprise, taking the user out of context regardless of the user’s current actions. An expired session that forces the users to lose half an hour of filling in a form happens constantly even in the most modern web applications, and this problem illustrates exactly the kind of frustration you want to avoid.

In other words, while a screen reader may make it through a malformed document full of deprecated markup and table-based layouts, the read-out interface will probably not make a lot of sense to the user. Where the priority 1 checklist leaves off after describing the absolute minimum requirements for an accessible page, the priority 2 checklist provides methods to offer (when implemented well) a decent user experience to users with various accessibility needs. Additionally, any element of an interface that has a set of markup available to display it should have the markup (rather than non-markup methods) used.

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