Modernizr is an open-source JavaScript library that helps you build the next generation of HTML5 and CSS3-powered websites

Mozilla Developer Central has long been a go to source for for technical documentation of web-standards based development. Now this excellent resource for info on HTML, CSS, JavaScript and the DOM has been organized with a nice clean UI.

The Web Workers specification defines an API for spawning background scripts in your web application. Web Workers allow you to do things like fire up long-running scripts to handle computationally intensive tasks, but without blocking the UI or other scripts to handle user interactions. They're going to help put and end to that nasty 'unresponsive script' dialog.

CodeMirror is a JavaScript component that provides a code editor in the browser. When a mode is available for the language you are coding in, it will color your code, and optionally help with indentation.

A rich programming API and a CSS theming system are available for customizing CodeMirror to fit your application, and extending it with new functionality.

WebPd aims to allow a subset of Pure Data audio patches to run in the browser without plugins. Right now the focus is on DSP objects, to enable you to mock up audio engines in Pd, put them on the web, and control them with Javascript.

Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.

appendTo was founded based on the growing need for quality jQuery training and support. learn.appendto.com was created specifically to fulfill that training need.

More and more companies are implementing jQuery in their websites and applications, and they are looking for developers that are highly skilled in jQuery and JavaScript. We see learn.appendto.com as a vehicle to train and mold these skilled professionals.

HasCanvas is a tool for creating and sharing Processing sketches and runs on John Resig’s Processing.js.

The JavaScript Code Quality Tool

JSMin is a filter which removes comments and unnecessary whitespace from JavaScript files. It typically reduces filesize by half, resulting in faster downloads. It also encourages a more expressive programming style because it eliminates the download cost of clean, literate self-documentation.

HTML Slidy: Slide Shows in HTML and XHTML

S5 is a slide show format based entirely on XHTML, CSS, and JavaScript. With one file, you can run a complete slide show and have a printer-friendly version as well. The markup used for the slides is very simple, highly semantic, and completely accessible. Anyone with even a smidgen of familiarity with HTML or XHTML can look at the markup and figure out how to adapt it to their particular needs. Anyone familiar with CSS can create their own slide show theme. It's totally simple, and it's totally standards-driven

Ace is a standalone code editor written in JavaScript. Our goal is to create a web based code editor that matches and extends the features, usability and performance of existing native editors such as TextMate, Vim or Eclipse. It can be easily embedded in any web page and JavaScript application. Ace is developed as the primary editor for Cloud9 IDE and the successor of the Mozilla Skywriter (Bespin) Project.

aptana

Web applications have evolved from simple HTML pages into rich, interactive applications that provide a great user experience. Today's web apps pose a challenge for developers, however: how do you create and maintain efficient JavaScript code that downloads quickly and works across different browsers?
The Closure tools help developers to build rich web applications with JavaScript that is both powerful and efficient. The Closure tools include:

MathJax is an open source JavaScript display engine for mathematics that works in all modern browsers.

JSCocoa brings Cocoa to Javascript.
It’s a bridge like PyObjC and RubyCocoa.

JSTalk is a scripting language for Mac OS X built on top of JavaScript, with a bridge to Apple's Cocoa libraries. You can use it to communicate with other applications just like AppleScript does

easily generate frequencies for notes, chords, scales, and more

This demo uses music.js with audiolet.js for audio synthesis

not your mother's javascript

HTML, CSS, Javascript and more

Show the world your top Pinboard tags!

Play around with the color and tag settings, and when you're happy with the results, paste the provided script tag in to your blog or website template.

A JavaScript Sound API supporting MP3, MPEG4 and HTML5 Audio.

SoundManager 2 makes it easier to play audio using JavaScript.
Using HTML5 and Flash, SoundManager 2 provides reliable cross-platform audio under a single JavaScript API.

The Dojo Foundation is the home of great 100-point open source projects, created by extraordinary people and companies to solve important problems

iGenApps takes you through an easy step-by-step set of screens to create your own Apps straight from your iOS or Android device without any programming.

If you have some programming skills with HTML and/or JavaScript, particularly with Sencha, you will be able to enhance your generated applications for further customization.

Leaked email speaks of battle to save the web from iOS

Muse is a freeform tool targeted to graphic designers and artists whose work has thus far appeared only in print, but who want to create interactive websites without having to deal with code.

Post to Pinboard in NetNewsWire

One thing nobody ever faults about JavaScript is its reach. It goes everywhere. You can’t escape it. If only using JavaScript’s reach didn’t require you to program in JavaScript. If only you could write your code in—oh, let’s get crazy—in the 21st Century incarnation of LISP, for example....

Clojure rocks, JavaScript reaches. ClojureScript is the realized inevitability of Clojure’s expansion to other platforms.

SVG-edit is a fast, web-based, Javascript-driven SVG editor that works in any modern browser:

create artists, songs, tracks and nests from prototypes that are exposed

Mozilla is working on a project that will add PDF rendering to Firefox using HTML5 and JavaScript, eliminating the need for users to run Adobe's own plug-in.

If Mozilla follows through on its plans, it would make Firefox the second major browser -- after Google's Chrome -- to offer in-browser PDF rendering.

Why Node.js has caught on while other server-side JavaScript implementations faltered.

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is based on a subset of the JavaScript Programming Language. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages. These properties make JSON an ideal data-interchange language.

This script will save all of your form fields in a cookie. It includes all text fields, radio button selections, checkbox values, etc. When your visitor returns, all form fields are automatically repopulated with the same value that they entered on their last visit.

The ZURBapps blog is a place where we discuss news, customers, tips and tricks about our web applications. For additional information on ZURB, check out the ZURBlog, where we discuss design interaction and strategy.

CoffeeScript is a little language that compiles into JavaScript. Underneath all of those embarrassing braces and semicolons, JavaScript has always had a gorgeous object model at its heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way.

The golden rule of CoffeeScript is: "It's just JavaScript".

Five Things You Thought You Had to Live with in JavaScript
Trevor Burnham
Sure, CoffeeScript is as easy as ABC. But Trevor’s prepared to take you all the way to Z.

Like any sane programmer, I was initially wary of CoffeeScript. How could a little syntactic sugar sprinkled over JavaScript possibly justify the extra compilation step?

But after playing with CoffeeScript for just a few days, I knew I’d never go back

Backbone supplies structure to JavaScript-heavy 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 application over a RESTful JSON interface.

Flagrant Badassery
A JavaScript and regular expression centric blog

JavaScript (JS for short) is the programming language that enables web pages to respond to user interaction beyond the basic level provided by HTML links and forms.

The links on this page lead to a variety of JavaScript tutorials and JavaScript training materials. Whether you are just starting out, wanting to learn JS basics, or are an old hand, wanting to sharpen your skills, you can find helpful resources here for JS best practices.

I make code look goooood :)
jQuery.Syntax is an extremely fast and lightweight syntax highlighter written in JavaScript. It has dynamic loading of syntax source files and integrates cleanly using CSS or modelines. Try it online right now!

POPULAR TOPICS FOR WEB DEVELOPERS
The MDC (Mozilla's Doc Center) takes over at intermediate CSS and covers JavaScript better than anyone. See w3fools.

Node.js, is being hailed as “the new Ruby on Rails” by some in the developer community. But it’s not a magic bullet, nor is it appropriate for all programming scenarios.

the JavaScript Garden, this project isn’t aimed at teaching JS noobs the ropes; rather, it’s supposed to refine the understanding of the language for current JavaScript programmers. Its creators, a handful of JavaScript experts, dole out well-organized advice on how devs can “avoid common mistakes, subtle bugs, as well as performance issues and bad practices.”

"SproutCore is an open source, platform-independent, Cocoa-inspired JavaScript framework for creating web applications that look and feel like Desktop applications. Learn how to combine SproutCore with HTML5's standard offline data storage technologies to deliver a first-class user experience and exceptional performance in your web application."

Build web applications quickly and easily using the industry’s leading web application IDE. Aptana Studio harnesses the flexibility of Eclipse and focuses it into a powerful web development engine.

Today, we updated Connexions to use MathJax to display MathML. MathJax is a JavaScript library that can render MathML across all browsers

This course will cover basic concepts of Javascript programming and the DOM (document object model)

We are passionate about the web, learning, and craftsmanship. We want you, as web designers and developers, to be successful in your careers. We feel, though, that W3Schools is harming the community with inaccurate information. Like any other authoritative educational resource, W3Schools should both hold itself to, and be held to, the highest standards.

We hope we can illuminate why W3Schools is a troublesome resource, why their faulty information is a detriment to the web, and what you (and they) can do about it.

I'm Jacob Seidelin, JavaScript enthusiast, freelance web developer and general internet nerd. In this little playground of mine, I'll post ideas and experiments, some silly, some stupid and hopefully also a few cool ones, all in the awesome world of JavaScript, Ajax and web development.

Jetpack is a project to make it easy to build Firefox 4 add-ons using common web technologies like HTML, JavaScript, and CSS. Our goal is to enable anyone who can build a web site to participate in making the Web a better place to work, communicate, and play.

A pure-JavaScript CSS selector engine
designed to be easily dropped in to a host library

jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.

JsFiddle is a playground for web developers, a tool which may be used in many ways. One can use it as an online editor for snippets build from HTML, CSS and JavaScript.

TiddlyWiki is a single html file which has all the characteristics of a wiki - including all of the content, the functionality (including editing, saving, tagging and searching) and the style sheet. Because it's a single file, it's very portable - you can email it, put it on a web server or share it via a USB stick.

This is a blog I’m keeping while I teach myself WebGL.  I’m learning as I go along, so any code I post is likely to be broken in strange, subtle ways.  Possibly in boring, unsubtle ways too.

WebGL is a nascent standard for hardware-accelerated 3D graphics on the Web.

WebGL is a context of the canvas HTML element that provides a 3D graphics API implemented in a web browser without the use of plug-ins.[1] The specification is currently a work in progress.[2] WebGL is managed by the non-profit technology consortium Khronos Group.

This course is an introduction to the intellectual enterprises of computer science. Topics include algorithms (their design, implementation, and analysis); software development (abstraction, encapsulation, data structures, debugging, and testing); architecture of computers (low-level data representation and instruction processing); computer systems (programming languages, compilers, operating systems, and databases); and computers in the real world (networks, websites, security, forensics, and cryptography). The course teaches students how to think more carefully and how to solve problems more effectively. Problem sets involve extensive programming in C as well as PHP and JavaScript.

SproutCore is an HTML5 application framework for building responsive, desktop-caliber apps in any modern web browser, without plugins.

The professional, open source development tool for the open web
Develop and test your entire web application using a single environment. With support for the latest browser technology specs such as HTML5, CSS3 and JavaScript; and Ruby, Rails, PHP & Python on the server side.

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

XMLHTTP is a technology with which a developer can access external resources over HTTP from a static web page without ever having to reload the page itself. This library is meant to simplify and unify the code necessary to successfully send and receive simple data via XMLHTTP.