Ajax: The Complete Reference - download pdf or read online

By Thomas A. Powell

ISBN-10: 007149216X

ISBN-13: 9780071492164

The Definitive advisor to Ajax net software Development
Evolve from the click-and-wait programming trend to the newest net 2.0 paradigm utilizing this entire consultant to Ajax. Written through internet improvement specialist Thomas Powell, the publication lays out each function of Ajax along specific causes and real-world code examples.
Ajax: the full Reference explains the best way to create and try Ajax-enabled internet purposes utilizing the XMLHttpRequest item in addition to replacement JavaScript-based verbal exchange mechanisms. you will discover a number of pattern functions that includes rising user-interface conventions and construct purposes that handle real-world networking and defense concerns. a powerful verbal exchange library is built during the booklet that allows you to architect versatile Ajax purposes. the newest applied sciences resembling internet prone, Flash-Ajax integration, client-side templates, Comet, and Offline entry also are coated. become aware of the way forward for internet improvement today!
- paintings with conventional JavaScript verbal exchange methods like iframes
- discover all of the quirks and info within the XMLHttpRequest object
- deal with disparate information codecs, together with XML, JSON, CSV, YAML, and more
- take care of networking concerns, together with timeouts, retries, reaction ordering, and quite a few server and content material errors
- Simplify JavaScript programming utilizing open-source Ajax libraries like YUI
- safe Ajax purposes utilizing authentication, obfuscation, and encryption
- enforce universal Ajax UI styles similar to vehicle recommend, click-to-edit, and drag-and-drop
- clear up troubling Ajax structure difficulties, together with again button, background, and bookmarking issues
- study Ajax's function in internet 2.0 and internet services
- discover push type communique utilizing Comet and Flash
- detect the way forward for offline internet software entry and operation

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Additional info for Ajax: The Complete Reference

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AppendChild(iframe); return iframe; } The makeIframeForm() function shows a few troubling cross-browser concerns in how each browser references a Document object within an iframe. body value and some will not. Once these issues have been rectified, you can create form fields that hold any payload values you want to send. appendChild(body); } } Now in the rating function, to make life easy, encode the payload into an object notation which you will come to know in Chapter 4 as JSON (JavaScript Object Notation).

Significant Emphasis on JavaScript Long underestimated as a significant programming language, with Ajax, JavaScript has finally been recognized as the powerful tool it always has been. Unfortunately, given the past misunderstandings of JavaScript’s capabilities, few developers are actually true experts in the language. While this is changing rapidly, it is common for many new Ajax developers to spend a great deal of time first mastering JavaScript language features such as loose typing, reference types, advanced event handling, DOM methods, and prototype OOP style programming before really dealing with Ajax.

The ever-present rating example can be extended to respond with the user’s rating, the current average rating, and the total number of votes. gif response. if ($response == "cookie") { $results = $rating . "a" . $average . "a" . gif'; $fp = fopen($filename, 'rb'); header("Content-Type: image/gif"); header("Content-Length: " . innerHTML = "Server available. "; 37 38 Part I: Core Ideas // dump the response image and end the script fpassthru($fp); exit; } When the image arrives, the result is read from the cookie in the script’s response callback function.

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