On Nov 11, 5:13 pm, "Michael Geary" <[EMAIL PROTECTED]> wrote:
> To elaborate a bit, "this" is special, but it's not magic.
>
> Whenever you call a function in JavaScript, it's always called as a method
> of some object,
No, it's not. What object is the following functions called as
methods of:
(function(){})();
function foo() {};
foo.call({});
> and this is a reference to that object.
If an object can't be determined, the global object is used, hence:
var global = (function(){return this;})();
> When you call foo.bar(), you are calling a function as a method of the foo
> object, so this == foo.
>
> JavaScript also has a global object. When you call a function bar() without
> any explicit object reference, you are actually calling it as a method of
> the global object.
No, they aren't. Properties resolved on the scope chain don't behave
like that, otherwise this used within methods found on prototype
objects would refer to the prototype object rather than the instance.
The global object is used when no other reference can be resolved or
the call sets it to the this keyword.
--
Rob
