Setting javascript prototype function within object class declaration

Question

Normally, I\'ve seen prototype functions declared outside the class definition, like this:

function Container(param) {
    this.member = param;
}
Container.p         


        

Answer 1

That is because privateVar is not a private member of the object, but part of stamp's closure. You could get the effect by always creating the function:

Container = function(param) {
    this.member = param;
    var privateVar = param;
    this.stamp = function(string) {
      return privateVar + this.member + string;
    }
}

The value of privateVar is set when the function is built, so you need to create it each time.

EDIT: modified not to set the prototype.