How to use an integer as a JSON object Key

Question

I would like to use an integer as a JSON object key :

let myJKey = 1  

let myJSONArrayObject = { filter: [] }  

myJSONObject.filter.push({myJKey: 'a json value'})  

However, I get : `{"filter":[{"myJKey":{"a json value"}}]}`

How should I set up so the I get the value 1 in the myKey variable as the JSON key?

Firstly, you have a JS object, not JSON. Secondly, JSON and JavaScript object keys can only be strings, by specification. At best, your key can be `"1"`, never `1`. — Amadan, Jul 24 '19 at 04:55

score 2 · Accepted Answer · answered Jul 24 '19 at 04:54

2

Using [] (Bracket notation)

let myJKey = 1  

let myJSONArrayObject = { filter: [] }  

myJSONArrayObject.filter.push({[myJKey]: 'a json value'})  

console.log(myJSONArrayObject)

answered Jul 24 '19 at 04:54

User863

19,346
2
17
41

score 1 · Answer 2 · answered Jul 24 '19 at 04:55

1

You are missing []

myJSONArrayObject.filter.push({[myJKey]: 'a json value'})

answered Jul 24 '19 at 04:55

Kannan G

974
6
9

score 1 · Answer 3 · answered Jul 24 '19 at 04:56

1

myJSONObject.filter.push({myJKey: 'a json value'})

Should be:-

myJSONObject.filter.push({[myJKey]: 'a json value'})

This is a ES6 syntax. Supporting in many browsers

answered Jul 24 '19 at 04:56

Ramesh Kithsiri HettiArachchi

1,440
13
30

How to use an integer as a JSON object Key

3 Answers3