jQuery: JavaScript library

25 June, 2008 at 19:49 Leave a comment

JqueryjQuery is a lightweight JavaScript library that emphasizes interaction between JavaScript and HTML. It was released January 2006 at BarCamp NYC by John Resig.

Dual licensed under the MIT License and the GNU General Public License, jQuery is free and open source software.

“You start with 10 lines of jQuery that would have been 20 lines of tedious DOM JavaScript. By the time you are done it’s down to two or three lines and it couldn’t get any shorter unless it read your mind.” – Dave Methvin

Simple Effects Plugins

jQuery has a nice selection of core animation effects, such as .show('speed') and .hide('speed'), .slideUp() and .slideDown(), and .fadeIn() and .fadeOut(). It even has a couple methods for toggling effects — the aptly named .toggle('speed') and .slideToggle().

All of these methods have optional speed, easing, and callback arguments — although a couple are special cases. The .show() and .hide() methods, when used without a speed, will immediately show and hide the matched set of elements with no animation. When the speed argument is included, the matched elements are shown and hidden gradually by animating their height, width, and opacity simultaneously. The .toggle() method shares its name with a method that takes two arguments that alternate being triggered. All of the other effect methods have a default speed of 400ms.
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jQuery UI: Widgets, Components, and Interactions

jQuery UI is a set of themable widgets and interactions, built on top of the jQuery JavaScript Library, that you can use to build highly interactive web applications. The core of the library revolves around different mouse interactions, namely drag and dropping, sorting, selecting, and resizing. On top of the core interactions are built a number of reusable widgets, including accordions, date pickers, dialogs, sliders, table sorters, and tabs. Finally, the library is finished off with a few effects that you can use to liven up your site, specifically magnifier and shadow.

Using jQuery with Ruby on Rails

“By default, Rails comes packed with the Prototype javascript library and the effects library, Scriptaculous. While this is all well and good sometimes you want a change. I personally prefer jQuery to prototype. I don’t have any beef with prototype, infact I used it for about a year before even getting into rails, but I just prefer the jQuery syntax and selectors.”

[http://www.maxkiesler.com]
[http://jquery.com/]
[wikipedia.com]
[http://www.learningjquery.com/]


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Entry filed under: Ajax, DOM, JavaScript, XHTML. Tags: , , , .

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