How to create a javascript object within an object?

Question

For example:

function userObject(start_value) {  
    this.name = start_value;
    this.address = start_value;
    this.cars = function() {
        this.value = start_value;
        this.count = start_value;
    };
}

Obviously the above dosent work but would appreciate the direction to take to have cars available as: userObject.cars.value = 100000;

Cheers!

user166390 · Accepted Answer · 2011-05-20 04:58:36Z

5

Remember that functions (and thus "object definitions") can be nested (there is absolutely no requirement that this is nested, but having it nested here allows a closure over start_value):

function userObject(start_value) {  
    this.name = start_value;
    this.address = start_value;
    function subObject () {
        this.value = start_value;
        this.count = start_value;
    }
    this.cars = new subObject();
}

However, I would likely opt for this (just create a new "plain" Object):

function userObject(start_value) {  
    this.name = start_value;
    this.address = start_value;
    this.cars = {
        value: start_value,
        count: start_value
    };
}

Happy coding.

answered May 20, 2011 at 4:58

user166390

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1 Comment

Ernest Over a year ago

this.cars = { value: start_value, count: start_value }; did the trick. Thank you.

Ateş Göral · Accepted Answer · 2011-05-20 05:01:57Z

1

so simple anser is to use the object syntax

function userObject(start_value) {  
 this.name = start_value;
 this.address = start_value;
 this.cars = {
  value: start_value,
  count: start_value
 };
}

edited May 20, 2011 at 5:01

Ateş Göral

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answered May 20, 2011 at 4:58

megakorre

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