Kangax,
about __getClass(undefined) and __getClass(null), both return Window, that
seems ambiguous for me.
__getClass = function(toString){return function(Object){
return Object != null ?
toString.call(Object).match(/^\[object\s([^\]]+)\]$/)[1] : Object
}}(Object.prototype.toString);
Moreover, getClass is not a "perfect name", since the method return Object
with every instance that is not native, while cases like document.body or
others, could be browser dependent.
Regards
On Fri, Oct 10, 2008 at 9:47 AM, Andrea Giammarchi <
[EMAIL PROTECTED]> wrote:
> Hi Kangax,
> the match way is better for the undefined possibility, but have you tried
> to *closurize* the method for performances?
>
> __getClass = function(toString){return function(Object){
> return toString.call(Object).match(/^\[object\s([^\]]+)\]$/)[1]
> }}(Object.prototype.toString);
>
> in my case only Chrome, WebKit, and IE8 have little improvements, so it's
> probably a silly question :-)
>
> Regards
>
>
> On Fri, Oct 10, 2008 at 1:12 AM, kangax <[EMAIL PROTECTED]> wrote:
>
>>
>> On Oct 9, 2:33 pm, Nathan Hammond <[EMAIL PROTECTED]> wrote:
>> > This showed up on Douglas Crockford's blog today:
>> > Object.prototype.toString.apply(value) === '[object Array]'
>> >
>> > The trick appears to have been in circulation for about 6 months and
>> > shows up in DWR as well as DC's book. DC credits Mark Miller for it.
>> > Probably slower than the value.constructor == Array test we use
>> > everywhere, but fixes the iframe-created object issue.
>> >
>> > 1. Should we adopt it for resiliency?
>> > 2. @Michael Geary: Are you using this in your iframe sandbox code? It
>> > sure would beat the heck out of duck typing.
>> >
>> > Just starting a discussion...
>>
>> Object.prototype.toString returns an internal [[Class]] property.
>> I've been playing with this some time ago:
>>
>>
>> http://github.com/kangax/protolicious/tree/master/experimental/__getClass.js
>>
>> > Nathan
>>
>> --
>> kangax
>> >>
>>
>
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