Harmony, from Martin Aumont, is a new Ruby DSL for executing JavaScript and DOM-using code from within Ruby apps. Why's that cool? Well, it enables you to build your own Ruby-level unit tests for JavaScript code within your Web applications - everything can be under one set of test suites!

The Rails team has finally released the Rails 3 beta, after more than a year since the Rails and Merb teams started working on this release. You can read all about it at the official Rails blog, but I figured I’d take the opportunity to share my take on the release.

First of all, you’re probably sick of hearing this, but we’ve done far, far more than we ever expected. A lot of that happened in the last few weeks.

Ruby is commonly associated with the frameworks (Rails, RSpec, and many others) that it enabled, but it is much more than that. The same ideology and design principles that popularized the language at the start are also the reason why it is being currently ported to a variety of alternative platforms: JVM, Objective-C, Smalltalk VM and Microsoft’s DLR.

A quick note for our European friends—especially ones who we'll see at JSConf Europe.

Become a JavaScript Master

Our one-day JavaScript Master Class is coming to Berlin, November 9, right after JSConf.

Following code has been tested with jQuery 1.3.2 version .

The super popular live method was added to jQuery 1.3 . It works just great. Except when it does not work. As per the documentation this method does not work in following cases: blur, focus, mouseenter, mouseleave, change, submit .