---
lang: en
title: 'API docs: metadata.decoratorfactory.withtarget'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/metadata
permalink: /doc/en/lb4/apidocs.metadata.decoratorfactory.withtarget.html
---

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[Home](./index.md) &gt; [@loopback/metadata](./metadata.md) &gt; [DecoratorFactory](./metadata.decoratorfactory.md) &gt; [withTarget](./metadata.decoratorfactory.withtarget.md)

## DecoratorFactory.withTarget() method

Set a reference to the target class or prototype for a given spec if it's an object

<b>Signature:</b>

```typescript
withTarget(spec: T, target: Object): T;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  spec | T | Metadata spec |
|  target | Object | Target of the decoration. It is a class or the prototype of a class. |

<b>Returns:</b>

T