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---
lang: en
title: 'API docs: filter.wherebuilder.nin'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/filter
permalink: /doc/en/lb4/apidocs.filter.wherebuilder.nin.html
---
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[Home](./index.md) > [@loopback/filter](./filter.md) > [WhereBuilder](./filter.wherebuilder.md) > [nin](./filter.wherebuilder.nin.md)
## WhereBuilder.nin() method
Add a `nin` condition
**Signature:**
```typescript
nin<K extends KeyOf<MT>>(key: K, val: MT[K][]): this;
```
## Parameters
<table><thead><tr><th>
Parameter
</th><th>
Type
</th><th>
Description
</th></tr></thead>
<tbody><tr><td markdown="1">
key
</td><td markdown="1">
K
</td><td markdown="1">
Property name
</td></tr>
<tr><td markdown="1">
val
</td><td markdown="1">
MT\[K\]\[\]
</td><td markdown="1">
An array of property values
</td></tr>
</tbody></table>
**Returns:**
this