拦截实例 [英] Intercept instanceof
问题描述
是否可以拦截对instanceof的调用？并返回一些东西
不同？我想看看是否有可能实现像多继承一样的事情，特别是使用instanceof，其中一个
组件扩展了一个对象并实现了一些监听器接口
用于MVC架构。
Hi,
Is it possible to intercept a call to "instanceof" and return something
different? I wanted to see if it was possible to implement something
like multiple inheritance, especially to use instanceof where a
component extends an object and implements some listener interface too
for a MVC architecture.
推荐答案
1月21日，7：51 * am，Robert< rob。 .. @ nowhere.xwrote：
On Jan 21, 7:51*am, Robert <rob...@nowhere.xwrote:
是否可以拦截对instanceof的调用？并返回一些东西
不同？我想看看是否有可能实现一些东西
Hi,
Is it possible to intercept a call to "instanceof" and return something
different? I wanted to see if it was possible to implement something
No.
No.
喜欢多重继承，特别是使用instanceof
组件扩展一个对象并为MVC架构实现一些监听器接口
。
like multiple inheritance, especially to use instanceof where a
component extends an object and implements some listener interface too
for a MVC architecture.
Jeremy J Starcher写道：
Jeremy J Starcher wrote:
2008年1月21日星期一13:51： 22 +0100，Robert写道：
On Mon, 21 Jan 2008 13:51:22 +0100, Robert wrote:
>是否可以拦截对instanceof的调用？并返回一些不同的东西？我想看看是否有可能实现像多继承一样的东西，尤其是使用instanceof，其中
组件扩展了一个对象，并为MVC架构实现了一些监听器接口。
>Is it possible to intercept a call to "instanceof" and return something
different? I wanted to see if it was possible to implement something
like multiple inheritance, especially to use instanceof where a
component extends an object and implements some listener interface too
for a MVC architecture.
Javascript没有OOP，因为它存在于其他语言中，你
可能需要重新考虑你的目标。
Javascript does not have OOP as it exists in other languages, you
may need to re-think your goal.
Utter废话。
http://javascript.crockford.com/javascript.html
http://en.wikipedia.org/wiki/Prototy...ed_programming
请保持你的机智自己的例子。
PointedEars
-
现实主义：HTML 4.01严格
福音：XHTML 1.0 Strict
疯狂：XHTML 1.1作为应用程序/ xhtml + xml
- Bjoern Hoehrmann
Utter nonsense.
http://javascript.crockford.com/javascript.html
http://en.wikipedia.org/wiki/Prototy...ed_programming
Please also keep your half-witted examples to yourself.
PointedEars
--
realism: HTML 4.01 Strict
evangelism: XHTML 1.0 Strict
madness: XHTML 1.1 as application/xhtml+xml
-- Bjoern Hoehrmann
托马斯''PointedEars'' Lahn写道：
Thomas ''PointedEars'' Lahn wrote:
Jeremy J Starcher写道：
Jeremy J Starcher wrote:
> 2008年1月21日星期一13： 51:22 +0100，Robert写道：
>On Mon, 21 Jan 2008 13:51:22 +0100, Robert wrote:
>>是否可以拦截对in的调用stanceof"返回不同的东西？我想看看是否有可能实现像多继承一样的东西，尤其是使用instanceof
组件扩展对象并实现一些监听器接口
用于MVC架构。
>>Is it possible to intercept a call to "instanceof" and return something
different?I wanted to see if it was possible to implement something
like multiple inheritance, especially to use instanceof where a
component extends an object and implements some listener interface too
for a MVC architecture.
http：// javascript.crockford.com/javascript.html
http ：//en.wikipedia.org/wiki/Prototy...ed_programming
我当然看到过你最受欢迎的例子：）
无论如何，我想出了一个合理的方法来实现它。我不能使用
instanceof，但也不算太糟糕。
我现在会做这样的事......
函数IMyListener（）
{
}
IMyListener.prototype.event = function（） {};
IMyListener .__ INTERFACE = true;
当我验证参数并期待一个接口时我称之为
isImplementation检查参数对象是否实现了接口的所有方法。
我仍然不能使用instanceof，这太糟糕了，但直到现在我只需要
它就可以进行参数验证。
I have seen your popular examples before of course :)
Anyway, I figured a reasonable way to implement it. I can''t use
instanceof, but it is not too bad.
I will do something like this now...
function IMyListener()
{
}
IMyListener.prototype.event = function() {};
IMyListener.__INTERFACE = true;
And when I validate arguments and expect an interface I call an
isImplementation that checks whether the argument object implements all
the methods of an interface.
I still can''t use instanceof, which is too bad, but till now I just need
it for arguments validation anyway.
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