prototype oriented - How to declare a static variable in Javascript

In the following code, I would like to have a counter to keep track
of the number of Person objects created. This code is not doing so, how would I
accomplish that?

function
            Person(){
 this.name = "Peter";
 this.counter = this.counter +
            1;

            alert(this.counter);
}


Person.prototype.counter
            = 0;

var p1 = new Person;
var p2 = new
            Person;

class="post-text" itemprop="text">

class="normal">Answer

function Person(){

            this.name = "Peter";
 Person.counter++;

            alert(Person.counter);

}

Person.counter =
            0;

var p1 = new Person();
var p2 = new
            Person();

Make the
"static" variable a property of the Person function, rather
than the prototype, and use Person
instead of this inside the
constructor.

This is possible because
JavaScript functions are first-class (i.e. they are objects), so can have properties of
their own.

Here's a href="http://jsfiddle.net/interdream/RhXPC/" rel="noreferrer">working
example of the above code.