Get Pragmatic Ajax. A Web 2.0 Primer, Pragmatic Bookshelf PDF

By Justin Gehtland

ISBN-10: 0976694085

ISBN-13: 9780976694083

It is not simply one other e-book on Ajax. it is "Pragmatic Ajax": a concise, whole examine a brand new method of envisioning and imposing browser-based purposes.

Ajax turns static websites into interactive purposes. you can now installation rich-client functions to consumers with no sacrificing the straightforward deployment of net purposes. yet to many of us, Ajax turns out tricky. that is why we produced this ebook. As a practical advisor, it strips away the secret and exhibits you the straightforward technique to make Ajax be just right for you.

We disguise the the fundamentals of DHTML, JavaScript, and the notorious XmlHttpRequest name. you will see tips on how to upload Ajax to latest courses, and layout new purposes to take advantage of the facility of net 2.0. study the 3 layers of Ajax framework, and while (and how) to exploit each one. See how you can create wealthy consumers, use visible results, upload client-side validation, and deal with varieties. Write purposes that degrade gracefully if consumers do not help JavaScript. and spot tips on how to combine your Ajaxified consumers into Java, .NET, and Ruby on Rails server frameworks.

With Pragmatic Ajax, you are going to:

comprehend the breadth of the Ajax/Web 2.0 panorama, and go-indepth on how Ajax works

learn the way JavaScript works together with your server-side framework

See easy methods to simply practice Ajax strategies to an present application--and whilst now not to

recognize what is coming by way of taking a look at new positive factors and frameworks at present in energetic improvement.

Writing dynamic functions isn't really that onerous. fogeys are awed by means of Google Maps, however it is not rocket technology (apart from the satellite tv for pc pictures). As a different bonus, see how you can enforce your individual Google Maps-like program utilizing DHTML.>

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However, the downside is that the scripts that references those events must be parsed after the HTML they reference. Otherwise, the element can not be found by getElementById( ), and the result is that no event is actually handled. com/behaviour/) that helps programmers by allowing you to assign behaviors to CSS classes, adding an extra layer of indirection. Modern browsers support a new kind of binding. The new attachEventListener( ) function takes the name of the event to handle (minus the “on” part), the function pointer, and a boolean value called capture mode.

And actually, we can. Report erratum M ANIPULATING THE W EB P AGE The official DOM API requires that developers manually manipulate all of an element’s child nodes, and add new ones, in order to change their contents. Some time ago, Internet Explorer introduced an alternative mechanism for changing the contents of an element—one that is dramatically easier to use. In recent years, Mozilla and Safari have both implemented support for this feature. " } Ahh, finally—something’s that easy to write!

3, on the following page shows a screenshot with these elements present. These are especially cool because they both include these rounded edges and shadows that make them blend in with the background map in a sophisticated fashion. We said the zoom level was the easiest feature, and frankly, we were probably wrong. This is ridiculously easy. The push pins and dialogs are simply a PNG image. The PNG image format is supported by the major browsers and supports a nice feature called alpha transparency.

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Pragmatic Ajax. A Web 2.0 Primer, Pragmatic Bookshelf by Justin Gehtland

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