By Dave Crane
Val's Blog "A vastly important box consultant particularly written for builders down within the trenches...waiting for the killer solution..."
Ajax in Action is helping you enforce that thinking--it explains tips to distribute the applying among the customer and the server (hint: use a "nested MVC" layout) whereas holding the integrity of the procedure. you'll the best way to ascertain your app is versatile and maintainable, and the way solid, established layout will help stay away from difficulties like browser incompatibilities. alongside how it is helping you unlearn many aged coding behavior. specially, it opens your brain to the various benefits won via putting a lot of the processing within the browser. when you are an internet developer who has earlier event with internet applied sciences, this publication is for you.
buy of the print booklet comes with a suggestion of a loose PDF, ePub, and Kindle booklet from Manning. additionally to be had is all code from the publication.
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Extra resources for Ajax in action
But what does that have to do with usability? Quite a lot, as it turns out. A successful computer UI does need to mimic our expectations of the real world at the very basic level. One of the most basic ground rules for interaction is that when we push, prod, or poke at something, it responds immediately. Slight delays between prodding something and the response can be disorienting and distracting, moving the user’s attention from the task at hand to the UI itself. Having to do all that extra work to traverse the network is often enough to slow down a system such that the delay becomes noticeable.
Without going back to talk to the server, there was only so much that we could do. Ajax makes considerable use of DHTML, but by adding the asynchronous request, it can extend the longevity of a web page considerably. By going back to the server while the interface is doing its stuff, without interruption, Ajax makes a great difference to the end result. Rather conveniently, all of these technologies are already preinstalled in most modern web browsers, including Microsoft’s Internet Explorer; the Mozilla/ Gecko family of browsers, including Firefox, Mozilla Suite, Netscape Navigator, and Camino; the Opera browser; Apple’s Safari; and its close cousin Konqueror, from the UNIX KDE desktop.
Friendly WYSIWYG web-authoring tools visualize our site as a collection of pages. Serverside web frameworks model the transition between pages as state transition diagrams. The classic web application is firmly wedded to the unavoidable lack of responsiveness when the page refreshes, without an easy recourse to the asynchronous handler solution. Why Ajax rich clients? 15 But Amazon has built a successful business on top of its website. Surely the classic web application can’t be that unusable? To understand why the web page works for Amazon but not for everyone, we ought to consider usage patterns.
Ajax in action by Dave Crane