Download e-book for iPad: Advanced Ajax: Architecture and Best Practices by Shawn M. Lauriat

By Shawn M. Lauriat

ISBN-10: 0131350641

ISBN-13: 9780131350649

“I a great deal loved how this booklet covers the entire Ajax software lifecycle and never simply coding thoughts. an individual who's trying to develop into a certified front-end developer will have fun with the architectural perception and most sensible practices introduced via this book.”  — Andi Gutmans, Co-Founder & Co-Chief know-how Officer of Zend applied sciences   Mission-Critical Ajax: Maximizing Scalability, functionality, safety, Reliability, and Maintainability   complex Ajax: structure and top Practices is the definitive advisor to construction business-critical, production-quality internet functions with Ajax. Shawn M. Lauriat systematically addresses the layout, structure, and improvement concerns linked to Ajax, delivering confirmed styles and powerful code examples on hand in no different e-book. You’ll locate most sensible practices for addressing the complete spectrum of concerns firm Ajax builders face: scalability, functionality, safety, reliability, flexibility, maintainability, and reusability.   Writing for knowledgeable net builders, Lauriat promises clean rules and chic recommendations: meaty technical content material, offered with unprecedented readability. one of several subject matters he covers in extraordinary intensity: cleanly imposing JavaScript customized occasions to minimize coupling and to reinforce flexibility; overcoming Ajax’s conventional accessibility obstacles; decreasing community latency via compression and different innovations; and lots more and plenty extra. insurance contains  making plans Ajax interfaces for simplicity, readability, and intuitiveness developing scalable, maintainable architectures for client-side JavaScript utilizing the most recent instruments to profile, validate, and debug client-side code Architecting the server part for safety and performance, whereas limiting loaded information, items, and activities to present requests maintaining opposed to the main common and demanding Ajax safety dangers 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 purposes concerning the website This book’s better half site (http://advancedajax.frozen-o.com) doesn’t simply offer all of the code: It exhibits code examples in motion, as development blocks of a true internet program interface.

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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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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. For example, when displaying mathematics, use MathML, a language to describe mathematics in a way communicable from one machine to another, rather than an image showing the equation or formula in question. As an example, the following markup for the area of a pie, with a thickness of a and a radius of z, makes for a much more accessible display than an image rendering.

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.

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


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