# Remove all null and undefined properties from an object

Drop keys whose value is null or undefined.

Canonical: https://1loc.dev/object/remove-all-null-and-undefined-properties-from-an-object/
Version: 1.0.0
Runtime: JavaScript · Node.js 22 / modern browsers
Verification: Local fixtures; no external services
Updated: 2026-10-28

## Implementation

```javascript
function removeNullish(object) { return Object.fromEntries(Object.entries(object).filter(([, value]) => value != null)); }
```

## Input

```json
{
  "to": "ana@example.com",
  "cc": null,
  "subject": "Order 8812",
  "templateId": null
}
```

## Expected output

```json
{
  "to": "ana@example.com",
  "subject": "Order 8812"
}
```

## Edge case

Input:
```json
{
  "a": 0,
  "b": "",
  "c": false
}
```
Output:
```json
{
  "a": 0,
  "b": "",
  "c": false
}
```

## Limits

- Only null and undefined are removed: 0, "" and false stay, as the edge case shows.
- Shallow: nested objects keep their nulls.

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-all-null-and-undefined-properties-from-an-object.mdx
Author: Nguyen Huu Phuoc and original contributors
Contributors: jjswifty
Source commit: 14b481cf60dff1620ab1bb99a43b1f68068cdd9b
Copyright (c) 2020 phuoc-ng
License: MIT — https://1loc.dev/licenses/
Maintainer: Oveyon
Modifications: Keeps the filter variant with Object.fromEntries. Original MDX retained as inert source evidence.