These things cannot be feature detectedThey must rely on eitherUA sniffingBrowser inferencesProviding the same (slow) fix to everyone

Accessible data visualization in HTML has always been tricky to achieve, particularly because elements such as images allow only the most basic features for providing textual information to non-visual users. A while back, we wrote an article describing a technique we came up with to use JavaScript to scrape data from an HTML table and generate charts using the HTML 5 Canvas element. The technique is particularly useful because the data for the visualization already exists in the page in structured tabular format, making it accessible to people who browse the web with a screen reader or other assistive technology.

MySpace's Performance Tracker is a browser plugin that help developers to improve their code performance by capturing and measuring possible bottlenecks on their web pages.

Most people getting started with JavaScript these days are faced with the challenging task of picking a library to use, or at least which one to learn first. If you're working for a company chances are they have already chosen a framework for you, in which case the point is somewhat moot. If this is the case and they've chosen MooTools and you're used to jQuery, then this article might still be of some use to you.

If you are interested in how to create fast MySQL queries, this article is for you

When used effectively, JavaScript debuggers help find and squash errors in your JavaScript code. To become an advanced JavaScript debugger, you'll need to know about the debuggers available to you, the typical JavaScript debugging workflow, and code requirements for effective debugging. In this article, we'll discuss advanced debugging techniques for diagnosing and treating bugs using a sample web application.

Data visualization in HTML has long been tricky to achieve. Past solutions have involved non-standard plugins, proprietary behavior, and static images. But this has changed with the recent growth in support for the new HTML Canvas element, which provides a native drawing API that can be addressed with simple Javascript. This article is a proof of concept for visualizing HTML table data with the canvas element.

WireIt is an open-source javascript library to create web wirable interfaces for dataflow applications, visual programming languages or graphical modeling.

I'm sure you all know that it's possible to create plugins and extend various aspects of the jQuery JavaScript library but did you know you could also extend the capabilities of it's selector engine? Well, you can! For example, you might want to add a new ':inline' selector which will return those elements that are displayed inline. Have a look:

SmartMarkUP is a lightweight and powerful JavaScript library that allows you to turn any textarea into a fancy markup editor. HTML, CSS, XML, Wiki syntax, BBCode or any other desired markup language can be implemented and/or adjusted to your preferences and business needs. SmartMarkUP doesn't depend on any other JavaScript library and can be integrated with any already existing JavaScript library or code.

There are plenty of times when you want to see something closer, to get a good look at the texture of a sculpture, or find out if that's a reflection or a scratch on that used car you're looking at. Seadragon, implemented as the Deep Zoom feature of Silverlight, allows you to do that. But what if you're not using the Silverlight platform? That's what Seadragon Ajax is for. Seadragon Ajax, written from the ground up in JavaScript, gives you the ability to add a Deep Zoom viewer into your blog, web site, or even your eBay listing. Just like this

Welcome! In this tutorial, we're going to create a breakout clone that you can play in your browser, using javascript and the element. In order to use this tutorial, you'll need to have a relatively recent version of Firefox, Safari, or Opera. You cannot use Internet Explorer, because Microsoft hss decided not to implement the element in it. Before you read any further, click on the "run code" button on the left to play the game that we'll end up creating. On every page, you'll be able to click the "run code" button to run the code we've developed so far. Every page besides this one has an editor in it containing the javascript code that will be run in the same box as the game as soon as you click the button. You can make changes to the code, and see the results instantly by clicking the "run code" button. In order to make our lives easier, I've included the jQuery framework in every page, which extends javascript in your browser with some useful methods. If you have any comments or questions, feel free to leave a comment on the "comments" tab.

Welcome to the home of Jx, a javascript library for creating graphical user interaces based on the fabulous MooTools library. This site provides access to the library as well as extensive documentation and examples. We've tried to provide a complete set of documentation and examples but there are surely some areas that are lacking. Please contact us on the mailing list if you find errors, omissions, or something you think could be done better.

We once did a poll asking people what their favorite CMS was. WordPress was a run-away winner, but also got many comments of "WordPress isn't a CMS!!". Well clearly, in the strictest sense, WordPress is a CMS as it "manages content". But is WordPress really only suited for blogging, or can it be used for more traditional non-blog sites? In this screencast I attempt to show off a number of WordPress features that make it very "CMS-like" in my opinion. Including page templates, dynamic menus, parent-child relationship pages, and using posts as ancillary content.

If you're looking to execute javascript code whenever someone finishes (or stops temporary) scrolling, moving the mouse, or resizing the page, you may find the following segment of code useful.

nice form validation in mootools

# CrossBrowserTesting.com allows website designers see what their website looks like in different browsers and in different operating systems. # Don't settle for a picture, test your AJAX and Javascript as well as the layout.