Prototype’s Element.on with MooTools
Prototype 1.7RC1 was released on Monday. While the big news with this release appears to be the implementation of John Resig's Sizzle selector engine, what caught my eye was the new on method. This new Element.on method is very similar to Prototype's Element.observe method but with a few enhancements (event relaying, event stop). While I don't necessarily care about the enhancements, I simply love that the event method is called "on." Using "on" as the method name makes it sound more like the event itself. Here's how easy it is to use "on" instead of "addEvent" for your events.
The MooTools JavaScript
/* the directive */
Element.alias('addEvent','on');
/* the usage */
$('myElement').on('click',fn);
Using on instead of addEvent is as easy as a quick MooTools Element.alias directive.
It's weird that I like "on" so much considering a generally don't like jQuery's css and attr methods. Oh well. Congrats to the Prototype team for their impending release.
![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...
![JavaScript Promise API]()
While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready? Promises are becoming a big part of the JavaScript world...
![Digg-Style Dynamic Share Widget Using the Dojo Toolkit]()
I've always seen Digg as a very progressive website. Digg uses experimental, ajaxified methods for comments and mission-critical functions. One nice touch Digg has added to their website is their hover share widget. Here's how to implement that functionality on your site...
![Fancy FAQs with jQuery Sliders]()
Frequently asked questions can be super boring, right? They don't have to be! I've already shown you how to create fancy FAQs with MooTools -- here's how to create the same effect using jQuery.
The HTML
Simply a series of H3s and DIVs wrapper...
Hi David. Nice idea. I like also css() and other jQuery methods’ name (for their simplicity), but I prefer Mootools core. So, why not:
Element.alias('addEvent','on'); Element.implement({ 'css': function(p, v) { if (v == undefined) return this.getStyle(p); else return this.setStyle(p, v); }, 'attr': function(a, v) { if (v == undefined) return this.getProperty(a); else return this.setProperty(a, v); }, 'html': function(h) { if (h == undefined) return this.get('html'); else return this.set('html', h); });What do you think?
@Lorenzo S.: I’ve done posts like that in the past. I can’t stand .css and .attr for MooTools, but what you have would work.
@Lorenzo S.: If you want jQuery syntax in MooTools, have a look at this repository: http://github.com/cheeaun/mooj/blob/master/mooj.js
@David
Fully agree with “on” seems acceptable, whereas .css, .attr etc. doesn’t :)
I guess the reason you might like “on” – when not other jQuery shortcuts – might be due to we’re used to “on” in “onClick” etc. for regular JavaScript, which probably makes the mind having positive thoughts.
Great advice, thanks a lot.
However, how much slower will this be? I mean, will on() trigger addEvent() and that in turn will trigger whatever internal functions are used?