JavaScript

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gif.js
Midway.js | Automatically center responsive elements! | A project by Shipp Co.
FlipClock.js Why FlipClock.js? So why use this library when there are many others with the same name? Well, this library was created because the other solutions weren’t abstract enough to provide a deep level of customization without rewriting the code. FlipClock.js
README.md UglifyJS 2 UglifyJS is a JavaScript parser, minifier, compressor or beautifier toolkit. This page documents the command line utility. mishoo/UglifyJS2 mishoo/UglifyJS2
README.md JS Beautifier This little beautifier will reformat and reindent bookmarklets, ugly JavaScript, unpack scripts packed by Dean Edward’s popular packer, as well as deobfuscate scripts processed by javascriptobfuscator.com. Usage You can beautify javascript using JS Beautifier in your web browser, or on the command-line using node.js or python. Web Browser einars/js-beautify einars/js-beautify
mishoo/UglifyJS mishoo/UglifyJS README.org UglifyJS – a JavaScript parser/compressor/beautifier NEW: UglifyJS2 I started working on UglifyJS’s successor, version 2.
Handle 1 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vestibulum velit ultricies orci pharetra elementum. In massa mauris, varius sed tempus a, iaculis sed erat. Collapsible Drag Drop Panels - Web Developer Plus Demos Collapsible Drag Drop Panels - Web Developer Plus Demos
JavaScript Framework

Modernizr: the feature detection library for HTML5/CSS3

Modernizr: the feature detection library for HTML5/CSS3

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser. Why use Modernizr? Taking advantage of cool new web technologies is great fun, until you have to support browsers that lag behind. Modernizr makes it easy for you to write conditional JavaScript and CSS to handle each situation, whether a browser supports a feature or not.
zepto.js — the aerogel-weight javascript framework The default build includes the following modules: Core, Ajax, Event, Form, IE. Zepto v1.0 used to bundle Effects, iOS3, and Detect modules in the default build. See below for optional modules. Zepto will only set the $ global to itself if it is not yet defined.

zepto.js — the aerogel-weight javascript framework

Underscore is a JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects. It’s the answer to the question: “If I sit down in front of a blank HTML page, and want to start being productive immediately, what do I need?” … and the tie to go along with jQuery's tux and Backbone's suspenders. Underscore provides 80-odd functions that support both the usual functional suspects: map, select, invoke — as well as more specialized helpers: function binding, javascript templating, deep equality testing, and so on. It delegates to built-in functions, if present, so modern browsers will use the native implementations of forEach, map, reduce, filter, every, some and indexOf. The project is hosted on GitHub.

Underscore.js

Underscore.js
Backbone.js

Backbone.js

Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface. The project is hosted on GitHub, and the annotated source code is available, as well as an online test suite, an example application, a list of tutorials and a long list of real-world projects that use Backbone. Backbone is available for use under the MIT software license. You can report bugs and discuss features on the GitHub issues page, on Freenode IRC in the #documentcloud channel, post questions to the Google Group, add pages to the wiki or send tweets to @documentcloud. Backbone is an open-source component of DocumentCloud.
jQuery

JavaScript Charts

JavaScript Color Picker

Ajax

PaintbrushJS Playground — Example Usage
JavaScript Code Snippet