Does JavaScript support some kind of __Resolve method?

[Arodicus]

I have a dynamic class. I would like to be able to attempt to access properties and methods on that class, and if they do not exist, I want the Class to handle the problem in a specific way, rather than throw an exception.

Thsi needs to be done internally to the class, not with an external "try" clause. In some languages this is known as a __resolve function.

thus

[CODE=javascript]var foo = new MyClass()

function MyClass(){
this.dog = "woof"
function __resolve(e) {
alert("I don't know what a" + e + "is");
}
}

alert(foo.dog) // woof
foo.cat() // I don't know what a cat is[/CODE]

Is this possible?

[gits]

hmmm ... at the moment for a quick shot i would use something like the following for that:

[CODE=javascript]
function OBJ() {
this.foo = function(s) {
alert(s);
};
}

OBJ.prototype.f = function(func, params) {
if (typeof this[func] != 'undefined') {
this[func].apply(this, params);
} else {
alert('i don\'t know what ' + func + ' is.');
}
}

var o = new OBJ;

o.f('foo', ['test']);
[/CODE]
that example calls foo like expected and when you try to call:

[CODE=javascript]o.f('cat', []);[/CODE]
you get it '__resolved' ...

may be that helps?

kind regards

PS: may be that has to be adapted for different things, when trying to call a method (like the example works at the moment) or a simple property or whatever ;)