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

By Shawn M. Lauriat

“I a great deal loved how this booklet covers the whole Ajax program lifecycle and never in simple terms coding innovations. someone who's trying to develop into a qualified front-end developer will relish the architectural perception and top practices added via this book.”  — Andi Gutmans, Co-Founder & Co-Chief know-how Officer of Zend applied sciences   Mission-Critical Ajax: Maximizing Scalability, functionality, protection, Reliability, and Maintainability   complicated Ajax: structure and top Practices is the definitive consultant to construction business-critical, production-quality internet purposes 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 booklet. You’ll locate most sensible practices for addressing the complete spectrum of concerns company Ajax builders face: scalability, functionality, defense, reliability, flexibility, maintainability, and reusability.   Writing for knowledgeable net builders, Lauriat offers clean rules and chic ideas: meaty technical content material, offered with unprecedented readability. one of the subject matters he covers in remarkable intensity: cleanly imposing JavaScript customized occasions to lessen coupling and to augment flexibility; overcoming Ajax’s conventional accessibility boundaries; lowering community latency via compression and different options; and masses extra. assurance comprises  making plans Ajax interfaces for simplicity, readability, and intuitiveness growing scalable, maintainable architectures for client-side JavaScript utilizing the newest instruments to profile, validate, and debug client-side code Architecting the server aspect for safeguard and performance, whereas proscribing loaded facts, items, and activities to present requests maintaining opposed to the main frequent and critical Ajax defense hazards Optimizing each section of an Ajax software, from server-side scripts to database interactions Introducing state of the art Ajax: online game improvement, Ajax with canvas, and Ajax for firm purposes concerning the site This book’s better half website (http://advancedajax.frozen-o.com) doesn’t simply offer all of the code: It indicates code examples in motion, as construction blocks of a true internet software interface.

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Additional info for Advanced Ajax: Architecture and Best Practices

Sample text

Note that, despite the difference of wording from the actual checklist item,1 the previous sentence uses the term “refuses” instead. Because modern browsers all make it very easy to create accessible web applications when the authors know how to do so, not learning how to write accessible markup (especially to meet even just the priority 1 checklist) stems from a refusal to support the users on the part of the developer. Having a link to the accessible version of a web application not only makes the users needing accessible interfaces feel like second-class citizens, but also requires that any change made to the original interface must also get made a second time in the alternate site.

In such a case, a globally accessible message queue needs to exist and display messages in a way that brings the user’s attention temporarily away from the interface to the content of the message itself. Similar to the dilemma in which the progress indicators could exist in a dedicated container or in temporary overlays, global messages present the same types of options. However, if overlaid messages work better for the application interface in question, the user will have no need to hide the message in the manner of a progress indicator, because the message will have no purpose once read (and reported, if necessary).

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Lots of post text. Lots of post text. Lots of post text. text. 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.

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