Assign value on nested object using value from sibling

Question

I have a config object with a token. Inside, there is a nested headers object that needs to reference the token. I am unable to use this, as shown below (comes up as undefined), and config.token doesn't work either.

var config = {
  token: 'abc123',
  headers: {
    'Authorization': 'bearer ' + this.token
  }
}

I need to be able to reassign config.token and have config.headers.Authorization update automatically with the new value.

Serge K. · Accepted Answer · 2019-02-15 17:06:40Z

5

You could do it with get operator :

var config = {
  token: 'abc123',
  get headers () {
    return {
      'Authorization': 'bearer ' + this.token
    }
  }
}

console.log(config);

answered Feb 15, 2019 at 17:06

Serge K.

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1 Comment

Awfulnaut Over a year ago

Ah, I didn't know about the get operator. Thank you, this works!

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