Creating an object with dynamic keys

Question

Here is a function building an object dynamically:

function onEntry(key, value) {
  console.log(key) // productName
  console.log(value) // Budweiser

  const obj = { key: value }
  console.log(obj) // { key: "Budweiser" }
}

Expected output is

{ productName: "Budweiser" }

But property name is not evaluated

{ key: "Budweiser" }

How to make property name of an object evaluated as an expression?

You should use bracket notation as described [here](http://stackoverflow.com/questions/13833204/how-to-set-a-js-object-property-name-from-a-variable). — 3_humped_CAML, Jun 22 '15 at 22:00

kube · Accepted Answer · 2018-12-11T20:40:38.310

3

Create an object, and set its key manually.

var obj = {}
obj[key] = value

Or using ECMAScript 2015 syntax, you can also do it directly in the object declaration:

var obj = {
  [key] = value
}

edited Dec 11 '18 at 20:40

answered Jun 22 '15 at 22:00

kube

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Creating an object with dynamic keys

1 Answers1