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!
![fetch API]()
One of the worst kept secrets about AJAX on the web is that the underlying API for it, XMLHttpRequest, wasn't really made for what we've been using it for. We've done well to create elegant APIs around XHR but we know we can do better. Our effort to...
![CSS Filters]()
CSS filter support recently landed within WebKit nightlies. CSS filters provide a method for modifying the rendering of a basic DOM element, image, or video. CSS filters allow for blurring, warping, and modifying the color intensity of elements. Let's have...
![Create a Dynamic Table of Contents Using MooTools 1.2]()
You've probably noticed that I shy away from writing really long articles. Here are a few reasons why:
Most site visitors are coming from Google and just want a straight to the point, bail-me-out ASAP answer to a question.
I've noticed that I have a hard time...
![RealTime Stock Quotes with MooTools Request.Stocks and YQL]()
It goes without saying but MooTools' inheritance pattern allows for creation of small, simple classes that possess immense power. One example of that power is a class that inherits from Request, Request.JSON, and Request.JSONP: Request.Stocks. Created by Enrique Erne, this great MooTools class acts as...
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.