Hi,
Let's say I've created a new object. One of the properties of my object
is an array. I would like another property to return the length of that
array. How do I do this.
For instance here's some code (and I hope that the email interface
doesn't screw this up so badly to make it unreadable. I'm going to avoid
using square brackets as well by using round ones instead even though
it's a syntax error, since square ones are known not to work with email.)
function test(){
this.a = new Array();
this.b = this.a.length;
}
x = new test();
x.a(0) = 3;
x.a(1) = 3;
x.b;
Returns 0. In other words, just setting this.b = this.a.length doesn't
not get updated automatically as this.a is added to.
Now, I tried turning this.b into a method (ie this.b = function(){return
this.a.length) and that works, but then to get the length I keep having
to refer to myObject.b().
How can I avoid that? How can I have a built-in length property for an
object.
Hope this is clear and has come out legibly via email. Apologies in
advance if it hasn't.
Thanks,
Ariel