How to Convert a JavaScript Array of Objects into a Single Object?

Converting Array of Objects into a Single Object in JavaScript

In JavaScript, you may encounter situations where you need to consolidate an array of objects into a single encompassing object. For instance, you might have:

[
  { key: '11', value: '1100', $$hashKey: '00X' },
  { key: '22', value: '2200', $$hashKey: '018' }
];

and want to convert it into:

{
  "11": "1100",
  "22": "2200"
}

This transformation can be effortlessly accomplished using the reduce() method, as seen in the following snippet:

var arr = [{key:"11", value:"1100"},{key:"22", value:"2200"}];
var object = arr.reduce(
  (obj, item) => Object.assign(obj, { [item.key]: item.value }), {});

console.log(object)

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