Ah, new $, is possible and therefore not barred ... Left in there as a
sort of a land-mine for the newcomers ? Or as an esoteric test for GC
developers ? Highly useless it seems to me.
Back to reality and jQuery. $ is defined as:
function(selector, context) {
// The jQuery object is actually just the init constructor
'enhanced'
return new jQuery.fn.init(selector, context);
}
Maybe I am just searching for ECMA "harmony", but will $() definition
that throws an exception if new-ed , be usefull :
try {
new $ ;
} catch ( x )
{
// x. message == "Can not new $()"
}
Au-contraire : will this hurt anyone ? Is exception throwing
porgramming idiom damaging for jQuery?
--DBJ
PS: if Python was choosen as a Netscape scripting language, World
would be a better place ... If nothing else its name is less
ridiculous ... ;o)
On May 14, 9:04 am, Andrea Giammarchi <[email protected]>
wrote:
> it's called JavaScript :D
>
> jokes a part, every function is a constructor as well so new function is
> always valid.
>
> If the function returns an object, it does not matter which "new" is because
> it will be an instance of returned object one.
>
> if it is a primitive it will simply be lost:
>
> var a = new function(){return 123;};
> // a is an instance of anonymous function
>
> this allows us to create Python like initializations:
>
> function PythonLike(){
> return this instanceof arguments.callee ? this : new arguments.callee;
>
> };
>
> alert(PythonLike() instanceof PythonLike);
> alert(new PythonLike() instanceof PythonLike);
>
> true in both cases
>
> jQuery returns a new jQuery.prototype.init where init method shares the same
> prototype ... better now? :-)
>
> On Wed, May 13, 2009 at 11:57 PM, DBJDBJ <[email protected]> wrote:
>
> > Why is this allowed :
>
> > var jq = new $ ;
>
> > Does it matter?
>
> > -- DBJ
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"jQuery Development" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/jquery-dev?hl=en
-~----------~----~----~----~------~----~------~--~---
