MooTools Event Delegation
One feature I heard Moo developers hinting at was the future addition of event delegation to the MooTools JavaScript library. MooTools Core Developer, Aaron Newton, wrote a post today about a plugin he's created that does just that.
From the article:
Event delegation is a common practice where by you attach an event listener to a parent object to monitor its children rather than attach events to all the children. It's far more efficient when you have numerous items on a page that you want to interact with.
I don't know of any concrete plans to incorporate this functionality into MooTools 1.3 but I assume they will. I strongly suggest MooTools developers read Aaron's article at Clientcide. I also recommend this article for jQuery users as John Resig recently boasted of this addition to jQuery.
Exciting times in the framework world!
![Interview with a Pornhub Web Developer]()
Regardless of your stance on pornography, it would be impossible to deny the massive impact the adult website industry has had on pushing the web forward. From pushing the browser's video limits to pushing ads through WebSocket so ad blockers don't detect them, you have...
![Creating Scrolling Parallax Effects with CSS]()
Introduction
For quite a long time now websites with the so called "parallax" effect have been really popular.
In case you have not heard of this effect, it basically includes different layers of images that are moving in different directions or with different speed. This leads to a...
![CSS Tooltips]()
We all know that you can make shapes with CSS and a single HTML element, as I've covered in my CSS Triangles and CSS Circles posts. Triangles and circles are fairly simply though, so as CSS advances, we need to stretch the boundaries...
![Create a Context Menu with Dojo and Dijit]()
Context menus, used in the right type of web application, can be invaluable. They provide shortcut methods to different functionality within the application and, with just a right click, they are readily available. Dojo's Dijit frameworks provides an easy way to create stylish, flexible context...
John Resig, boasting!? GASP!
Thanks for the news David! … I’ve never been a fan of delegated events/event handlers – do they even bubble/propogate?
Let me add that event delegation is awesome when you’re continually adding DOM elements, perhaps via Ajax… I’m just not sure the performance benefits are as they seem.
@James: I didn’t mean “boasted” in a bad way. It’s an awesome addition which should be boasted. You can find the answer to your question here:
http://groups.google.com/group/mootools-users/browse_thread/thread/bbaf247948273868/db6a33205b71c89b?show_docid=db6a33205b71c89b
James, believe me with even a couple hundred elements you can see a big difference. It takes a few more elements to make a browser like Chrome slow up, but IE folks will see the difference on smaller numbers of events like night and day.