A Look at Sun.COM's New Event Delegation Library - Gregory Reimer's Weblog

A Look at Sun.COM's New Event Delegation Library - Gregory Reimer's Weblog: "We're on the brink of releasing a new JavaScript mini-library to sun.com, which we call the reg library. It provides an object named, naturally enough, reg. It stands for register. With it, you can register behaviors, like this:

reg.click('ul.foo > li > a.bar', myFunction);

Once that bit of code runs, regardless of whether the entire DOM has finished loading into the browser, click events on elements matching ul.foo > li > a.bar will be handled by myFunction, which is passed a reference to the active element and the event object. This happens without any DOM traversal, and without any events ever being attached to any elements. Even if the entire contents of document.body are subsequently overwritten by innerHTML, all those new element nodes implicitly inherit the correct behavior. No re-walking of the new DOM subtree ever occurs. No re-attachment of events ever occurs."