# Pick a random property of an object

Return one of the object’s own enumerable keys.

Canonical: https://1loc.dev/random/pick-a-random-property-of-an-object/
Version: 1.0.0
Runtime: JavaScript · Node.js 22 / modern browsers
Verification: Usage lines executed in Node.js 22 and headless Chromium; no external services
Updated: 2026-10-28

## Implementation

```javascript
function randomKey(object) { const keys = Object.keys(object); return keys[Math.floor(Math.random() * keys.length)]; }
```

## Usage

```javascript
const colors = { aqua: '#00ffff', azure: '#f0ffff', beige: '#f5f5dc' };
Object.hasOwn(colors, randomKey(colors)); // → true
randomKey({}); // → undefined
```

Lines marked → were executed in Node.js 22 and in headless Chromium, and each result was compared with the value shown. Lines marked e.g. are illustrative.

## Limits

- Own enumerable string keys only; an empty object returns undefined. The original called Object.keys twice.

The function does not validate its arguments. Add checks where it receives untrusted input.

## Source and license

Original: https://github.com/phuocng/1loc/blob/14b481cf60dff1620ab1bb99a43b1f68068cdd9b/contents/pick-a-random-property-of-an-object.mdx
Author: Nguyen Huu Phuoc and original contributors
Contributors: See original repository history
Source commit: 14b481cf60dff1620ab1bb99a43b1f68068cdd9b
Copyright (c) 2020 phuoc-ng
License: MIT — https://1loc.dev/licenses/
Maintainer: Oveyon
Modifications: Documented as a reference with executed usage lines. Original MDX retained as inert source evidence.