Retrieve information stored within an object's properties

Possible Duplicate:
Accessing a JavaScript Object Literal's Value within the Same Object

Let's take a closer look at this JavaScript object 

var settings = {
  user:"someuser",
  password:"password",
  country:"Country",
  birthplace:country
}

I am trying to set the value of birthplace to be the same as country, so I placed the object value of country in front of birthplace, but it did not work. I also tried using this.country but that also failed. My question is, how can I access a property of an object within the same object.

For those who may wonder what my goal is or request more information, all I want to achieve is accessing an object property within the same object, and the script is provided above.

Any assistance would be greatly appreciated :)

Thank you

javascriptobjectproperties

Answer №1

When utilizing object literal syntax, it's important to note that referencing an object during initialization is not possible. The object must be referenced after it has been created.

settings.birthplace = settings.country;

The only way to reference an object during initialization is by using a constructor function.

In the following example, an anonymous function is used as a constructor. The newly created object is referenced using this.

var settings = new function() {
    this.user = "someuser";
    this.password = "password";
    this.country = "Country";
    this.birthplace = this.country;
};

Answer №2

Accessing an object within itself is not possible. It is recommended to utilize a variable instead:

var continent = "continent";
var info = {
  user: "someuser",
  password: "password",
  continent: continent,
  origin: continent
}

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