# Remove falsy values from array

Filter with Boolean.

Canonical: https://1loc.dev/array/remove-falsy-values-from-array/
Version: 1.0.0
Runtime: JavaScript · Node.js 22 / modern browsers
Verification: Local fixtures; no external services
Updated: 2026-10-28

## Implementation

```javascript
function removeFalsy(values) { return values.filter(Boolean); }
```

## Input

```json
[
  "ana@example.com",
  "",
  null,
  "rui@example.com",
  0,
  false
]
```

## Expected output

```json
[
  "ana@example.com",
  "rui@example.com"
]
```

## Edge case

Input:
```json
[]
```
Output:
```json
[]
```

## Limits

- 0 and "" are falsy too — filter explicitly when they are valid values.

The lab validates types and size before calling this function. Add equivalent validation at your own trust boundary.

## Source and license

Original: https://github.com/phuocng/1loc/blob/14b481cf60dff1620ab1bb99a43b1f68068cdd9b/contents/remove-falsy-values-from-array.mdx
Author: Nguyen Huu Phuoc and original contributors
Contributors: vreymond
Source commit: 14b481cf60dff1620ab1bb99a43b1f68068cdd9b
Copyright (c) 2020 phuoc-ng
License: MIT — https://1loc.dev/licenses/
Maintainer: Oveyon
Modifications: Curated implementation; explicit input contract, edge case and limits. Original MDX retained as inert source evidence.