Reads Active Record's validations and makes them available to live client side javascript

A Rails plugin that delivers a special message to DiggBar users, or runs frame-killer javascript.

As a Typekit user, you’ll have access to our library of high-quality fonts. Just add a line of JavaScript to your markup, tell us what fonts you want to use, and then craft your pages the way you always have. Except now you’ll be able to use real fonts.

Asynchronous JavaScript and CSS, also known as CSSHttpRequest, is a method of URI-encoding data in 2KB chunks split over several CSS rules with a modified data URI scheme. Because CSS is not subject to the same-origin policy, no service proxy is required.

iUI is a framework consisting of a JavaScript library, CSS, and images for developing iPhone webapps.

In a nutshell, Bowline lets you build cross platform desktop applications with Ruby, HTML and JavaScript. The idea is to make building desktop apps as simple (and fun) as building Rails websites.

Celerity is a JRuby wrapper around HtmlUnit – a headless Java browser with JavaScript support. It provides a simple API for programmatic navigation through web applications. Celerity aims at being API compatible with Watir.

Automated cross-browser testing finds layout problems and scripting errors on websites before users do.

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.

Seems like there's no way to do it in Capybara, unfortunately. But if you're running your tests with the Selenium driver (and probably other drivers that support JavaScript), you can hack it