2011/10/12 T.J. Crowder <t...@crowdersoftware.com>
> On Oct 11, 3:13 pm, "Miguel Beltran R." <yourpa...@gmail.com> wrote:
> > Using prototype 1.7 I try to figure what is better, the new ON method or
> > OBSERVE method but the only thing I found is that ON is better if you
> > use an CSS selector and/or stopObserve
> > am I correct? or observe is going to be deprecated?
> `on` is just like `observe` if you don't pass it a filtering selector
> (except that it's more indirect; it eventually ends up calling
> `observe` under the covers), but I can't imagine `observe` is going to
> be deprecated. Both have mechanisms for stopping event handlers. With
> `on` you stop it by calling `stop` on the `EventHandler` object it
> returns to you; with `observe` you call `stopObserving` with the same
> arguments you gave `observe` (or fewer, if you want to have a broader
> effect). The claim is that `on` is useful because you don't have to
> remember the event handler function if you need to stop it later, but
> since you have to remember the `EventHandler` instance `on` returns to
> you, I'm not seeing any net benefit in that sense. `on`'s real use is
> event delegation IMHO.
> T.J. Crowder
> Independent Software Engineer
> tj / crowder software / com
> www / crowder software / com
> You received this message because you are subscribed to the Google Groups
> "Prototype & script.aculo.us" group.
> To post to this group, send email to
> To unsubscribe from this group, send email to
> For more options, visit this group at
I was a little worried about if ´observe´ could be deprecated
Lo bueno de vivir un dia mas
es saber que nos queda un dia menos de vida
You received this message because you are subscribed to the Google Groups
"Prototype & script.aculo.us" group.
To post to this group, send email to firstname.lastname@example.org.
To unsubscribe from this group, send email to
For more options, visit this group at