Download Ajax: The Complete Reference by Thomas A. Powell PDF

By Thomas A. Powell

The Definitive consultant to Ajax net software Development
Evolve from the click-and-wait programming trend to the most recent net 2.0 paradigm utilizing this finished advisor to Ajax. Written by way of internet improvement specialist Thomas Powell, the e-book lays out each function of Ajax along targeted causes and real-world code examples.
Ajax: the entire Reference explains the best way to create and attempt Ajax-enabled net functions utilizing the XMLHttpRequest item in addition to substitute JavaScript-based communique mechanisms. you will discover various pattern purposes that includes rising user-interface conventions and construct functions that tackle real-world networking and defense matters. a powerful verbal exchange library is built in the course of the ebook that allows you to architect versatile Ajax purposes. the most recent applied sciences comparable to internet providers, Flash-Ajax integration, client-side templates, Comet, and Offline entry also are coated. notice the way forward for internet improvement today!
- paintings with conventional JavaScript verbal exchange ways like iframes
- discover the entire quirks and info within the XMLHttpRequest object
- deal with disparate facts codecs, together with XML, JSON, CSV, YAML, and more
- take care of networking concerns, together with timeouts, retries, reaction ordering, and various server and content material errors
- Simplify JavaScript programming utilizing open-source Ajax libraries like YUI
- safe Ajax functions utilizing authentication, obfuscation, and encryption
- enforce universal Ajax UI styles resembling automobile recommend, click-to-edit, and drag-and-drop
- remedy troubling Ajax structure difficulties, together with again button, historical past, and bookmarking issues
- study Ajax's function in net 2.0 and internet services
- discover push type communique utilizing Comet and Flash
- detect the way forward for offline net software entry and operation

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Value);"> Hate It - [ 1 2 3 4 5 ] - Love It

NOTE If you try to show the values of the iframe form yourself by making the frame visible, you may not see anything, depending on the browser in question and how you pause the submission.

That’s what the rest of the book is for. However, before getting there, let’s put Ajax in context with an understanding of its historical rise and by previewing some of its possible implications. The Rise of Ajax The name Ajax is new, but the ideas behind it are not. The term was first coined by Jesse James Garrett in an article written in February 2005. However, undoubtedly Jesse would be the first to acknowledge that the idea of Ajax goes back much farther than his application of Chapter 1: Introduction to Ajax Implications of Ajax It should go without saying that the implications of Ajax are significant.

Onerror = function(){cancelRequest(target, "Server error",current Request,timer);}; It is also important to address the possibility that the response image is not generated in a timely manner. To mitigate such a problem we can set a timeout value, and if the timer fires before receiving the image, alert the user. /* function to cancel request if network timeout occurs */ networkTimeout = function(){cancelRequest(target, "Network timeout",currentRequest);}; /* define network timeout in milliseconds and bind to timeout function */ var timer = setTimeout("networkTimeout()",timeout*1000); When employing this technique, it is important to clear any timeouts that may be running if data is received successfully.

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