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"I was typing an email on my iPad, and I got distracted. Some time later, I set the iPad down on my desk, and an icon on my Mac appeared. I clicked it, and in seconds the Mail app was running with that partially entered email in front of me. That's the Handoff feature in action, part of the iOS 8 and OS X Yosemite updates that will ship this fall. It's a sign of a change in computing that Google and Microsoft are also pursuing, not just Apple. Liquid Computing Welcome to the next tech revolution: Liquid computing Liquid computing: The next wave of the mobile experience Apple Watch: The Internet of things' new frontier iOS 8 and OS X Yosemite are both in beta, so I can't really talk about the details of Handoff yet. But I can say it works just as Apple showed off at its recent WWDC conference's public keynote. Handoff is the first big step into a future where the notion of a device will go through a radical transformation. [ Mobile and PC management: The tough but unstoppable union. | Subscribe to InfoWorld's Consumerization of IT newsletter today. ] At first blush, what Apple is doing is blurring the lines between mobile and desktop devices. That's true, but it's only part of the actual transformation under way. There's no real name for this transformation yet, so I'm calling it liquid computing until someone else comes up with a better name. In a nutshell, what Handoff -- and liquid computing in general -- portends is a world where both data and activities move around as needed. The device isn't the center of the universe, as it has been since the first computer. Think back to the early PC era, when people first started getting PCs at home, not just at work. Remember the effort we all spent in making sure we copied our files to a disk for use at home? We had to bring our data with us or else use a network connection to a file share. That model has persisted to this day, which is why the biggest loss of corporate data remains the lost or stolen thumb drive or

Nowadays many JavaScripters are aware of the advantages of event delegation. Chris Heilmann and Dan Webb, among others, have discussed its advantages, and I've been using it as much as possible for about two years now. Event delegation is especially useful in effects like dropdown menus, where lots of events on links may take place that can easily be handled at the root level (an or in this case).