30-seconds-of-code/snippets/objectFromPairs.md

title, tags, cover, firstSeen, lastUpdated

title	tags	cover	firstSeen	lastUpdated
Object from pairs	object,array	silver-flat-screen	2017-12-17T17:55:51+02:00	2020-10-21T21:54:53+03:00

Creates an object from the given key-value pairs.

• Use Array.prototype.reduce() to create and combine key-value pairs.
• Object.fromEntries() provides similar functionality.

const objectFromPairs = arr =>
  arr.reduce((a, [key, val]) => ((a[key] = val), a), {});

objectFromPairs([['a', 1], ['b', 2]]); // {a: 1, b: 2}