How to convert an array of key–value arrays to an array of individual objects?

Question

I have an array of arrays that I want to turn into an array of objects in JavaScript.

Input:

[
  [ "foo", 1.0 ],
  [ "bar", 3.2 ],
  [ "baz", 2.1 ]
]

Output:

[
  { "foo": 1.0 },
  { "bar": 3.2 },
  { "baz": 2.1 }
]

[This question has already been answered in this thread](https://stackoverflow.com/questions/4215737/convert-array-to-object) — Fahadul Islam, Jul 12 '18 at 16:35
@FahadulIslam that is not a valid duplicate. The input format there is not a key-value tuple, but I'm sure there is some valid duplicate question somewhere. — Patrick Roberts, Jul 12 '18 at 16:36
This question has already been answered in this thread. [Convert Array to Object](https://stackoverflow.com/questions/4215737/convert-array-to-object) — Fahadul Islam, Jul 12 '18 at 16:37

score 1 · Answer 1 · answered Jul 12 '18 at 16:37

1

Use array.map to do something like this perhaps:

arr = [
    ["foo", 1.0],
    ["bar", 3.2],
    ["baz", 2.1]
]

console.log(arr.map(e => ({[e[0]]: e[1]})));

answered Jul 12 '18 at 16:37

BlackBeard

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score 1 · Answer 2 · answered Jul 12 '18 at 16:48

This code will work on All the browsers:

Plain native code for the understanding of conversion(code is not optimized though):

var ArrayObject =  [
    ["foo", 1.0],
    ["bar", 3.2],
    ["baz", 2.1]
];
var OutputArray = []
for(var i=0;i<ArrayObject.length;i++){
    var arrayObject = {}
    var ObjectProperty = ArrayObject[i][0];
    var ObjectValue = ArrayObject[i][1];
    arrayObject[ObjectProperty] = ObjectValue;
    OutputArray.push(arrayObject);
}

How to convert an array of key–value arrays to an array of individual objects?

2 Answers2