[Prototype-core] Status of property 'name' within Class.create(d) functions
Hello,
I have been trying for days o understand what I have missed.
I have narrowed down the problem to this, where I create a simple class
'foo' that I extend to assign a private member 'name' set to 'FOO':
var foo = Class.create({});
Object.extend( foo, { name : 'FOO' } );
Then :
alert(foo.name)
surprisingly displays
klass
(instead of FOO)
Samething if I explicitely force the value to 'FOO'
foo.name = 'FOO'
Is there someone in the position to tell me what is going on, and why
foo's private member 'name' does not hold its value. This does not
happen if I choose another name for the private member.
This has been most upsetting to me for days now, and I fail to
understand what I am missing.
So thank you to anyone who would help me understand my mistake if this
is not a bug.
Franck PORCHER
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[Prototype-core] Re: Status of property 'name' within Class.create(d) functions
Off the top of my head, I'd guess you're using FireFox. I know the JS
engine in FireFox (SpiderMonkey) exposes the name of a function via
the `name` property, however, I don't know whether that property is
mutable.
My guess, from the behaviour of your code, is `name` is not a mutable
property.
On 8 Jun, 2008, at 9:06 PM, Franck PORCHER wrote:
Hello,
I have been trying for days o understand what I have missed.
I have narrowed down the problem to this, where I create a simple
class 'foo' that I extend to assign a private member 'name' set to
'FOO':
var foo = Class.create({});
Object.extend( foo, { name : 'FOO' } );
Then :
alert(foo.name)
surprisingly displays
klass
(instead of FOO)
Samething if I explicitely force the value to 'FOO'
foo.name = 'FOO'
Is there someone in the position to tell me what is going on, and
why foo's private member 'name' does not hold its value. This does
not happen if I choose another name for the private member.
This has been most upsetting to me for days now, and I fail to
understand what I am missing.
So thank you to anyone who would help me understand my mistake if
this is not a bug.
Franck PORCHER
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Prototype: Core group.
To post to this group, send email to prototype-core@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
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[Prototype-core] Re: Status of property 'name' within Class.create(d) functions
Yes Jeff, I'm using Firefox (Linux FreeBSD plat-forms).
And peering at the source code, one can see that Class.create() defines
an explicit klass() function, hence the 'klass' display.
Apparently, this property in not mutable. Something of a pain :-[
I will be reviewing prtotype's Class.create to see if we cannot achieve
the same result with an anonymous function, for which Firefox JS engine
*does not* expose anything in the name slot (I already tested this).
Franck
Franck Porcher, Docteur ès Sciences (Paris VI), Informatique théorique
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Jeff Watkins wrote:
Off the top of my head, I'd guess you're using FireFox. I know the JS
engine in FireFox (SpiderMonkey) exposes the name of a function via
the `name` property, however, I don't know whether that property is
mutable.
My guess, from the behaviour of your code, is `name` is not a mutable
property.
On 8 Jun, 2008, at 9:06 PM, Franck PORCHER wrote:
Hello,
I have been trying for days o understand what I have missed.
I have narrowed down the problem to this, where I create a simple
class 'foo' that I extend to assign a private member 'name' set to 'FOO':
var foo = Class.create({});
Object.extend( foo, { name : 'FOO' } );
Then :
alert(foo.name)
surprisingly displays
klass
(instead of FOO)
Samething if I explicitely force the value to 'FOO'
foo.name = 'FOO'
Is there someone in the position to tell me what is going on, and why
foo's private member 'name' does not hold its value. This does not
happen if I choose another name for the private member.
This has been most upsetting to me for days now, and I fail to
understand what I am missing.
So thank you to anyone who would help me understand my mistake if
this is not a bug.
Franck PORCHER
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You received this message because you are subscribed to the Google Groups
Prototype: Core group.
To post to this group, send email to prototype-core@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
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[Prototype-core] Re: Status of property 'name' within Class.create(d) functions
Yep, it's suppose to be read-only
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Function:name
On Jun 9, 12:31 am, Jeff Watkins [EMAIL PROTECTED] wrote:
Off the top of my head, I'd guess you're using FireFox. I know the JS
engine in FireFox (SpiderMonkey) exposes the name of a function via
the `name` property, however, I don't know whether that property is
mutable.
My guess, from the behaviour of your code, is `name` is not a mutable
property.
On 8 Jun, 2008, at 9:06 PM, Franck PORCHER wrote:
Hello,
I have been trying for days o understand what I have missed.
I have narrowed down the problem to this, where I create a simple
class 'foo' that I extend to assign a private member 'name' set to
'FOO':
var foo = Class.create({});
Object.extend( foo, { name : 'FOO' } );
Then :
alert(foo.name)
surprisingly displays
klass
(instead of FOO)
Samething if I explicitely force the value to 'FOO'
foo.name = 'FOO'
Is there someone in the position to tell me what is going on, and
why foo's private member 'name' does not hold its value. This does
not happen if I choose another name for the private member.
This has been most upsetting to me for days now, and I fail to
understand what I am missing.
So thank you to anyone who would help me understand my mistake if
this is not a bug.
Franck PORCHER
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Prototype: Core group.
To post to this group, send email to prototype-core@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
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