The timepicker addon adds a timepicker to jQuery UI Datepicker, thus the datepicker (jQueryUI) is required for using any of these. In addition all datepicker options are still available through the timepicker addon.

The CSS Emoticons plugin is a simple jQuery plugin (and stylesheet) that allows you to turn any text emoticons on the page into cute little smiling faces with pure CSS3 styling (no images whatsoever).

Captify is a plugin for jQuery written by Brian Reavis (@brianreavis) to display simple, pretty image captions that appear on rollover

A jQuery plugin that sets a div or span to show a countdown to a given time

Masonry is a layout plugin for jQuery. Think of it as the flip side of CSS floats. Whereas floating arranges elements horizontally then vertically, Masonry arranges elements vertically then horizontally according to a grid. The result minimizes vertical gaps between elements of varying height, just like a mason fitting stones in a wall.

When you are working with jQuery selectors and collections, many times you want to know if the collection actually contains the elements you wanted to select. Here's a tiny jQuery plugin that does just that.

$.fn.ensure = ->
  if (@length == 0) then throw 'Empty jQuery collection'
  this

Use it like this:

$('input[id$=_cache]').ensure()
> Console: "Uncaught Empty jQuery collection"

If you have jQuery code like this:

if (condition) {
  $element.show();
} else {
  $element.hide();
}

... you can shorten this to:

$element.toggle(condition);

The Sexy Curls jQuery Plugin is an open-source jQuery plugin by Elliott Kember which lets you share in the beauty of the page fold.

jQuery.spritely is a jQuery plugin created by Artlogic for creating dynamic character and background animation in pure HTML and JavaScript. It's a simple, light-weight plugin with a few simple methods for creating animated sprites such as the birds you see on this page, and dynamic scrolling backgrounds.

The API is a little confusing because animate returns a reference to the element to enable chaining.
But you can do this:

$element.animate(...);
$element.promise().then(function() { ... });

Twitter's Bootstrap CSS blueprint as a jQuery UI theme. Even if you don't want to use Bootstrap as a CSS framework, this theme looks better than jQuery UI's default theme.

You can say this in Javascript:

$.fn.jquery
=> "1.11.1"

If you need to upgrade code that uses the old jQuery methods bind, delegate, live, unbind and die, the attached article has examples how to migrate to the new on and off versions.

imgAreaSelect is a jQuery plugin for selecting a rectangular area of an image. It allows web developers to easily implement image cropping functionality, as well as other user interface features, such as photo notes (like those on Flickr).

As the title says: this jQuery plugin creates bar charts from HTML tables. It comes in some different flavors.

Check the examples page: http://alphagov.github.com/magna-charta/.

No big features, but many improvements under the hood:

• Faster selector engine
• Many bug fixes

Note that jQuery 2.0, scheduled for early 2013, will remove support for IE6 and 7. Before that there will be one more minor release with 1.9 that still has support for ancient IEs.

File upload with nice UI, progress bar and preview, allowing multiple files and supports drag & drop.

Its default is built on Bootstrap, but there's a version for jQuery-UI.

zClip is a lightweight jQuery "copy to clipboard" plugin built using the popular Zero Clipboard library. This plugin uses an invisible Adobe Flash movie that is fully compatible with Flash Player 10 and below.

This is a demo of the "Tabby" Javascript jQuery plugin to use tabs in regular textareas to make them suitable for in-browser coding of languages like HTML, CSS, Javascript, or your favorite server-side language. The idea is to be able to use a press of the TAB button or SHIFT+TAB to indent or outdent your code.

We can now plug into every facet of the Rails jQuery UJS adapter, binding to custom events, and even customizing internal functions, without hacking or monkey-patching the rails.js file itself.

This will eventually be integrated into jQuery UI with the multiple: true option, but right now this is the way. Credits go to jqueryui.com.

This jasmine plugin helps with testing DOM manipulation in two ways:

1. It gives you DOM-related matchers like toBeVisible() or toHaveCss(css)
2. It gives you a function to load HTML from fixture files. Without this you would have to manually add elements to <body> and clean up afterwards.

Responsive Lightbox JavaScript that just works.

You can use it for single images or a gallery. Animations are optional.

Simply use one(...) instead of on(...). It takes the same arguments.