30-seconds-of-code/javascript/snippets/to-identity-object.md

title, type, tags, author, cover, dateModified

title	type	tags	author	cover	dateModified
Convert array to identity object	snippet	array	chalarangelo	rain-shopping	2023-04-16T05:00:00-04:00

Converts an array of values into an object with the same values as keys and values.

• Use Array.prototype.map() to map each value to an array of key-value pairs.
• Use Object.fromEntries() to convert the array of key-value pairs into an object.

const toIdentityObject = arr => Object.fromEntries(arr.map(v => [v, v]));

toIdentityObject(['a', 'b']); // { a: 'a', b: 'b' }