Subj : Re: accessing methods of base class
To   : netscape.public.mozilla.jseng
From : "Richard Cornford" <Richard@litotes.demon.co.uk>
Date : Mon Jul 21 2003 11:27 am

"Brendan Eich" <brendan@meer.net> wrote in message
news:bffi8e$lan1@ripley.netscape.com...
<snip>
> Your code says:
>
> function Shape(Number_x, Number_y) {
>
> var type = 'Shape';
> var x = 0;
> var y = 0;
>          . . .
> }
>
>Those variables are simply function locals, they are not
>instance or member variables of the objects created via
>'new Shape(...)' expressions. ...
<snip>

There are circumstances were the local variables (including inner
function definitions) of a constructor function may be considered
private instance members:-

<URL: http://www.crockford.com/javascript/private.html >

Though using the technique Douglas Crockford describes on that page
renders normal prototype based inheritance impractical.

Richard.

.