Call a function in an object and use a property of that object

Asked Jun 21 '18 at 07:03

Active Jun 21 '18 at 07:11

Viewed 39 times

let person={
    firstName: 'Joe',
    lastname :'dawn',
    birthYear: 1995,
    job:"IT",
    family:['nikita','papa','mom'],
    age:(function(){
        console.log(this);

        return new Date().getFullYear()- this.birthYear;
    })()
};

When I am printing the age it is giving me NaN as the this.birthYear is giving undefined as a result.

The question is how can I call the function within the object and use the property of that object only in the function.

edited Jun 21 '18 at 07:11

Teemu

22,918
7
53
106

asked Jun 21 '18 at 07:03

yash vadhvani

This is an `Object` not a `JSON` string. – vibhor1997a Jun 21 '18 at 07:04
Why not create a class and function inside? – Kamil Naja Jun 21 '18 at 07:05
2

There is no JSON in your post. JavaScript objects are not JSON. – Paul Jun 21 '18 at 07:05
`this` in your IIFE is not a reference to the object being built (in fact, when the property initializer for `age` is evaluated, `person` doesn't have a value yet and the `person` variable is inaccessible). – T.J. Crowder Jun 21 '18 at 07:08
You can use getters. See this answer. https://stackoverflow.com/a/4616262/5774004 – Sreeragh A R Jun 21 '18 at 07:28

Call a function in an object and use a property of that object

0 Answers0