Initialize object property with use other properties of same object

Question

I am newbie in JS. And my question is: How I can pretty initialize object property with use other properties of same object.

Example:

var obj = {
  par1 : 2*2,
  par2 : this.par1
};

Thanks.

Answer 1

During Object literal declaration you have to use the full reference:

var myObject = {
    par1 : 2*2,
    par2 : myObject.par1
};

The this keyword will only work on an instantiated Object.