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Writing Your First YUI Application

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If you are interested in creating applications using the Yahoo! User Interface then you may be looking for a good resource to get started. Well, over at O'Relly's Inside RIA they have put together a good post to help you get started.

Below is an excerpt from the post.

Getting Started



YUI consists of several CSS components and nearly three dozen JavaScript components, all of which are designed to empower the rapid creation of web applications that run in all the major web browsers. Yahoo! uses a Graded Browser Support approach in which we "white-list" a subset of browsers that we'll fully support — we call these the "A-Grade browsers," and, taken together, they represent more than 90% of traffic on Yahoo!'s network worldwide. YUI is tested and supported in all A-Grade browsers (including current versions of Safari, Opera, Firefox and Internet Explorer).


ui-language.png

The best way to think about YUI and what it does for you is to consider the difference between the user interface language of the browser as compared with the desktop. In the browser, the "default" language is relatively limited. You have form elements (buttons, select menus, text inputs) and hyperlinks. On the desktop, you expect much more: Tabs, sliders, cascading menus, dialogs, tooltips, data grids, rich text editing, drag and drop, animation, autocompletion, and so on. Here's one way to visualize this difference, with the browser's native UI elements on the left and the richer set of desktop-style UI elements on the right:



In the browser, everything on the right side of this diagram requires some hard work. YUI, like other JavaScript/CSS libraries, aims to make that work less hard.

You can read the full post here.

The Yahoo! User Interface is a great JavaScript library and this will give anybody that wants to learn it a good jump start.