Creating an object with var for object key?

Question

I have an object:

"locales": {
    "en":["au", "uk"],
    "de":["ch", "de"]
 }

I check if a language is in this object then create the object with just the found language.

var language = 'en';

if(language in locales){

    locales = { language : locales[language]};
    ...

But logging locales gives:

{ language: [ 'au', 'uk' ] }

Where I would expect to see:

{ en: [ 'au', 'uk' ] }

The new object is using a string rather than var for the object key - how can I fix this?

Rajaprabhu Aravindasamy · Accepted Answer · 2016-04-13 11:54:44Z

1

You have to use Destructuring assignment here,

var language = 'en';
if(language in locales){
    locales = { [language] : locales[language]};

You can't use a variable directly as a key to an object.

DEMO

edited Apr 13, 2016 at 11:54

answered Apr 13, 2016 at 11:53

Rajaprabhu Aravindasamy

67.2k17 gold badges107 silver badges133 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Adnan Umer · Accepted Answer · 2016-04-13 11:54:01Z

1

var locals = {}
locals[language] = locales[language];

answered Apr 13, 2016 at 11:54

Adnan Umer

3,6892 gold badges20 silver badges38 bronze badges

Comments

CodeWizard · Accepted Answer · 2016-04-13 11:55:47Z

1

locales = { language : locales[language]};

You have 2 problems:

You set the key locales
you use the locales twice

Do it like this:

var locales = {
    "en": ["au", "uk"],
    "de": ["ch", "de"]
        },
language = 'en';

if (locales[language]){
    locales = locales[language];
}

console.log(locales)

Output:

edited Apr 13, 2016 at 11:55

answered Apr 13, 2016 at 11:53

CodeWizard

146k22 gold badges162 silver badges181 bronze badges

2 Comments

panthro Over a year ago

i need the object to be called locales.

CodeWizard Over a year ago

Updated the answer for you

Collectives™ on Stack Overflow

Creating an object with var for object key?

3 Answers 3

DEMO

Comments

Comments

console.log(locales)

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

console.log(locales)

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related