<p>
        Its fundamental philosophy, centering on collections of DOM Elements, puts it squarely where most Javascript developers program most. By contrast, other frameworks, like Prototype and Dojo, take a functional approach. Sure, they’re fully capable of addressing DOM Elements, just like jQuery, but these other frameworks make entirely different choices. Prototype, for one, fancies itself
        a true Object Oriented extension of Javascript’s paltry native offerings. In pursuit of true object-orientedness, its developers have put a substantial amount of time into developing object-oriented classes for different types of functionality.
        A class for forms, a class for elements, a class for events. It goes on and on.
        It’s perfectly possible to write clean, good-looking Prototype code. And Prototype can emulate one of the best things about jQuery’s focus on DOM Element collections:
        its chainability. But jQuery conceives of modern Javascript development the way many major players in the Javascript community are starting to see it: as DOM
        Scripting first and foremost. For those of us whose Javascriptprogramming focuses primarily on page elements, and Isuspect that’s most of us, jQuery makes the work dead simple.
        </p>

        <p>Area a like top level site. Topic, news, sites are three area created by default. They share the same feature that area has. An area has three default components(portal lists, document library, and image library). Topic has shortcut to create subarea. Topic area does not use any of this component. News use portal lists to add news. Sites area does not use default component. Instead it add one more custom lists(the name is Sites). Sites area has a shortcut to create site, in the process of site creation, you can add the short cut this site. This shortcut is actually an record in the "Sites" custome list.

        <a href="http://www.bobbyvandersluis.com/articles/goodpractices.php">Ten good practices for writing JavaScript in 2005</a>