@loopback/docs/site/apidocs/filter.wherebuilder.between.md

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---
lang: en
title: 'API docs: filter.wherebuilder.between'
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.between.html
---

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[Home](./index.md) &gt; [@loopback/filter](./filter.md) &gt; [WhereBuilder](./filter.wherebuilder.md) &gt; [between](./filter.wherebuilder.between.md)

## WhereBuilder.between() method

Add a `between` condition

**Signature:**

```typescript
between<K extends KeyOf<MT>>(key: K, val1: MT[K], val2: 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">

val1


</td><td markdown="1">

MT\[K\]


</td><td markdown="1">

Property value lower bound


</td></tr>
<tr><td markdown="1">

val2


</td><td markdown="1">

MT\[K\]


</td><td markdown="1">

Property value upper bound


</td></tr>
</tbody></table>

**Returns:**

this