Question

Why is it that I have to use a new instance of a function in order to get an inner variable, but I can’t use the function itself,

why this works

function bla(){this.a = 1}
b = new bla
alert (b.a)

and this doesn’t

function bla(){this.a = 1}
alert (bla.a)

?

Answer 1

Because you have to call the function in order for the variable to be defined.

If you want to do what you’re talking about, you can use an object literal

var bla = 
{
  a: 1,

  displayA: function() {
    alert(bla.a);
  }
};

alert(bla.a); // Displays 1
bla.displayA(); // Displays 1