On Feb 6, 8:33 pm, Herr Ernst <[EMAIL PROTECTED]> wrote:
> This is bad news for me.
> Maybe you can help me though. My users can create some classes in a
> particular order which are stored at runtime in an array. But I want
> to make this persistent, i.e. storing in a cookie. I thought about
> building a serialized string which contains the class/constructor and
> the constructor arguments for each object. I've helped myself with the
> following hack:
>
> Car=Class.create({
> initialize: function() {
> this._class="Car";
> }
It would be better to reference the object itself rather than it's
name:
this._class = Car;
As far as I know, using an underscore for a property name is intended
to indicate a private variable, but _class is public and "class" is a
reserved word. Why not just use the public constructor property?
>
> });
>
> var benz=new Car();
>
> //recreated benz
> var benzclone=eval("new "+benz._class+"()")
var benzclone = new benz.constructor();
> Pretty dirty, isn't it. Or does someone know a better method?
See above. Alternatively, consider using the features built into the
language. Use a normal constructor and the constructor property of
objects constructed from it:
function Car(make) {
this.make = make;
}
var benz = new Car('Benz');
var fiat = new benz.constructor('Fiat');
alert(fiat.make);
--
Rob
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