Short for of creating an object from 2 variables

Question

Is there a short form of doing such operation:

function doObject(key, value){
   let object = {};
   return object[key] = value;
}

UPD: forget about function, I use it just to isolate scope and provide to params key and value. I don't need to implement the function but logic that it does

score 3 · Answer 1 · answered Mar 01 '16 at 13:28

3

const doObject = (key, value) => ({[key]: value});
//               ^^^^^^^^^^^^    ^ ^^^^^
//               1               2 3

Arrow function syntax
Wrapping with braces allows you to return an object literal without the extended syntax. (Otherwise, it thinks the {} are the block delimiters.
Computed object literal property key.

answered Mar 01 '16 at 13:28

Madara's Ghost

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Important to note this is ES2015 syntax, and might not yet be supported across the board. – Andrei Nemes Mar 01 '16 at 13:44
The question is tagged [tag:ecmascript-6]. – Madara's Ghost Mar 01 '16 at 13:45

nils · Answer 2 · 2016-03-01T13:29:35.877

0

You can use a computed property name for the object:

function doObject(key, value){
   return {
       [key]: value
   };
}

edited Mar 01 '16 at 13:29

answered Mar 01 '16 at 13:28

nils

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The correct term is "computed property name". – Mar 01 '16 at 13:29

Short for of creating an object from 2 variables

2 Answers2