Fwd: three small proposals: the bikeshed cometh!
dhtmlkitchen at gmail.com
Thu Apr 29 11:44:56 PDT 2010
---------- Forwarded message ----------
From: Garrett Smith <dhtmlkitchen at gmail.com>
Date: Thu, Apr 29, 2010 at 11:44 AM
Subject: Re: three small proposals: the bikeshed cometh!
To: Alex Russell <alex at dojotoolkit.org>
On Thu, Apr 29, 2010 at 3:01 AM, Alex Russell <alex at dojotoolkit.org> wrote:
> [ snip ]
>>> Many functions, both in the DOM and in the library, accept functions as
>>> arguments. ES5 provides a bind() method that can ease the use of these
>>> functions when the passed method comes from an object. This is, however,
>>> inconvenient. E.g.:
>>> node.addEventListener("click", obj.method.bind(obj, ...));
>>> Also, insufficient. Event listeners can't be detached when using
>> That is not true at all. I suggest reading the ES5 specifation that
>> before proceeding.
> From 184.108.40.206:
> 4. Let F be a new native ECMAScript object .
> I can't discern any particular reason why equivalence should succeed
> for multiple calls to bind() from the spec. What am I missing?
The bound function that is returned can be saved as a property of
something, so that it can be later removed.
var f = obj.method.bind(obj);
node.addEventListener("click", f, false);
node.removeEventListener("click", f, false);
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