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

By Shawn M. Lauriat

“I greatly loved how this e-book covers the complete Ajax program lifecycle and never in simple terms coding strategies. an individual who's seeking to develop into a qualified front-end developer will delight in the architectural perception and most sensible practices added through this book.”  — Andi Gutmans, Co-Founder & Co-Chief expertise Officer of Zend Technologies

 

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

 

Advanced Ajax: structure and most sensible Practices is the definitive consultant to construction business-critical, production-quality net functions with Ajax. Shawn M. Lauriat systematically addresses the layout, structure, and improvement matters linked to Ajax, delivering confirmed styles and powerful code examples on hand 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 internet builders, Lauriat can provide clean principles and stylish strategies: meaty technical content material, offered with remarkable readability. one of several themes he covers in unparalleled intensity: cleanly enforcing JavaScript customized occasions to minimize coupling and to reinforce flexibility; overcoming Ajax’s conventional accessibility boundaries; decreasing community latency via compression and different concepts; and masses extra. insurance includes 

  • Planning Ajax interfaces for simplicity, readability, and intuitiveness
  • Creating scalable, maintainable architectures for client-side JavaScript
  • Using the most recent instruments to profile, validate, and debug client-side code
  • Architecting the server facet for safety and performance, whereas limiting loaded facts, items, and activities to present requests
  • Protecting opposed to the main common and important Ajax defense hazards
  • Optimizing each portion of an Ajax program, from server-side scripts to database interactions
  • Introducing state of the art Ajax: online game improvement, Ajax with canvas, and Ajax for company applications

About the internet Site

This book’s better half website (http://advancedajax.frozen-o.com) doesn’t simply supply all of the code: It indicates code examples in action, as construction blocks of a true internet software interface.

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Extra info for Advanced Ajax. Architecture and Best Practices

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5 Make necessary server-side checks before moving the user onto the next step. 2 User Expectations User expectations often get left behind in Ajax-driven feature design, meaning that you should never have to explain what will happen when the user hits a certain button or takes some other action. 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.

The examples of the rendering of different browsers of the same CSS also demonstrate that the users of each browser would not see anything necessarily missing from their user experience. Even the IE6 users, with very little, very buggy CSS support, have no indication that something has failed to render in their browser. By the same token, support for JavaScript can in some cases degrade gracefully as well. In this case, expanding on the often-used example of an event listener canceling the action of a form or a clicked link, the application can fall back on having the server perform actions when the client does not have the ability to take care of everything needed for the action.

Lots of post text. Lots of post text. Lots of post text. previousSibling; } } } } This gets the root element (as far as this example needs to have) and retrieves a NodeList of all ul elements contained within. It then loops through each of them, working its way from the last child node (a text node containing white space, for most of these elements) until it finds an element node. When it finds such a node, it changes the background color and breaks the loop. By contrast, the following example creates the same DOM structure from generic div elements with CSS classes defining the look and feel:3

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